Characters / My Instant Death Ability is So Overpowered...

Main Characters

In General

• Freudian Trio: Yogiri is the no-nonsense, mostly stoic Ego who kills anyone threatening his life without remorse, Tomochika is the outgoing yet down-to-earth Superego who is the Straight Man and Audience Surrogate to Yogiri's murderous antics (and everything else) and Mokomoko is the wise-cracking, Plucky Comic Relief Id who tags along with the other two and contributes nothing to the dynamic but annoying banter and the occasional help.
• Official Couple: At the end of the series, Yogiri and Tomochika get together, with the final main story illustration of the volume 14 being Yogiri holding Tomochika's hands while Tomochika is smiling to him.
• Status Quo Is God: Throughout the entire series, it's always been the main three and nothing more as either Yogiri takes no chances at befriending their enemies and instantly kills them on the spot or the ones who were acquainted or befriended the trio beforehand shortly leave the group in one way or another. Only Ryouko and Carol who managed to stick around for long, though not always.

Yogiri Takatou

Voiced by: Kōki Uchiyama, Yo Taichi (Child)

Powers: Instant Death

Class: Bug Hunter (Fake), None (Actual)

A sleepy high-school boy who was born with the ability to end any existence with a thought, and the main protagonist of the series. Despite his paranormal nature, he makes an effort to live as normal a life as he can and avoid trouble, though he has a tendency to get roped into conflicts regardless.

Much of his childhood was spent under the care of the Institute, which housed him in a chamber deep underground in the hopes that he wouldn't become a threat to the outside world.

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• Above the Gods: Yogiri's ability is impossible to escape or counter, even for the divine. Furthermore, his true form is an eternal, omnipresent conceptual entity that far transcends any god. Basically whenever Yogiri kills one, it's less punching out Cthulhu and more the bigger fish having a snack.
• Accidental Hero: He ends up unwittingly saving the world from being conquered, destroyed or devoured by several malicious gods and a Heavenly Record Eater during his self-defense killing sprees and generally ends up ridding the world of horrible people in droves while trying to go back home.
• Adaptational Attractiveness: Has the look of a Ridiculously Average Guy in the light novel, but is given a more unique look with a cyan wing-like coloration on his hair in the manga and anime.
• Adaptational Hairstyle Change: Originally, Yogiri had the standard black, short hair you would find on a typical Japanese male Isekai protagonist but the manga and anime would give him a minor upgrade with two cyan tufts of hair sticking upwards like devil horns, denoting his true Eldritch Abomination nature hidden within.
• Adaptational Personality Change: Downplayed. Yogiri is slightly more emotive in the manga but is still much of his Stoic, morally-grey self not to change his overall character or stance on Killing in Self-Defense.
• Adorable Abomination: Yogiri as a child is rather endearing in both appearance and demeanor, despite being an amoral human incarnation of The End of the World as We Know It.
• Ambiguously Absent Parent: As a child, Yogiri had never heard of the concept of parents until Asaka brought it up and how he was born was left completely unexplained. This implies Yogiri doesn't have a biological mother or father to begin with and his true form had spontaneously manifested him as its avatar on Earth one day.
• Amazon Chaser: While she pales in comparison to him, Tomochika is a powerhouse in her own right and has the Nerves of Steel to match which made Yogiri all the more attracted to her. Case in point, after Tomochika swiftly ended her match with David by kicking him straight in the balls, Yogiri's initial dumbfounded expression turned to blushing.
• A Million Is a Statistic: By volume 12 of the light novel, Sion had noted that Yogiri had permanently killed 6% of the total population (A whopping sixty million people) since his arrival in the other world. However, Yogiri remains unaffected by this fact since he has no choice but to kill those who have threatened, annoyed and/or going to harm him and his loved ones despite giving them plenty of chances and warnings to back off.
• Amnesiac God: He doesn't seem to understand his own true nature and just thinks he's a human that was born with a supernatural ability.
• Anti-Climax: Not only Yogiri has the power to kill anyone in an instant but also any drama or tension whatsoever, making all his fights completely one-sided and resulting in enemies, no matter how developed or hyped-up they are, suddenly falling over dead without warning. In one instance, a self-proclaimed demon king begged for Yogiri to show emotion, cool poses, say activation phrases or do anything at all during their "battle" when the latter just let his ability turn the former and his four demon generals into lifeless corpses while standing perfectly still.
• Anthropomorphic Personification: His true form and the source of his power is the inevitable end of everything that exists which no being, whether living, inanimate, undead, metaphysical or divine can ever challenge nor escape from.
• Apocalypse Maiden: Most people who know about Yogiri consider any world that houses him to be as good as doomed. Not because he goes out of his way to spread death and destruction, but because others will be too stupid and prideful to leave him alone and will get tons of people killed as a result.
• Berserk Button: The only thing that gets Yogiri to be VERY upset is anyone who harms his loved ones (Namely Tomochika and Asaka).
• Blank White Void: What Aoi saw his true form as in the manga, emphasizing there is nothing beyond him as he is the final destination of all fate before it ceases to exist.
• Blue-and-Orange Morality: Yogiri's mindset is that anyone who attacks him or his loved ones should deserve death regardless of the circumstances. Of course, the story expands upon both the positive and negative aspects of him following this philosophy:
  • While those who know Yogiri's true nature are right in repeatedly calling him out over resorting to this extreme solution, this is also justified in that the other world is too dangerous of a place to consider other options especially when those challenging him won't back down no matter what. Only Asaka and Tomochika had truly understood and accepted his way of thinking as the latter shares a similar mindset towards defending oneself while the former believes and taught Yogiri that transcendent beings beyond human comprehension like him should follow their own rules.
  • This reaches its crescendo when Sion reveals his death toll is at sixty million casualties (That's 6% of the total population wiped from existence) but Yogiri isn't fazed in the slightest if it means his and Tomochika's lives are safe. However, the other world denizens digress upon hearing the Great Sage's announcement and are out for his head which leads to more lives being lost from Yogiri defending himself.
• Book Ends: In the anime, the first episode starts with a sleeping Yogiri being wakened up by Tomochika while the last episode ends with Yogiri sleeping on Tomochika's lap. Additionally, Yogiri's first kill in the other world is a dragon attacking the school bus while one of his kills in the finale is Ayaka who had transformed into the same dragon and was about to attack him and his classmates.
• Boxing Lessons for Superman: He quickly learns "Dannoura-Style Martial Arts" so that he don't have to kill all the time.
• Character Catchphrase: Often says "Die" when insta-killing his targets although not because it's an activation phrase but because it sounded appropriate in the moment.
• Deader than Dead: The true nature of Yogiri's power. The reason so many "higher" beings are scared shitless of him is because he's not so much the personification of "death" as he is the personification of "everything has an end". Even in the other world where Death Is Cheap, gods and deathless beings exist, and the Reset Button can be hit, nothing can sidestep "the end" because once Yogiri kills something, it stays dead without exception and nothing is beyond his scope.
• Death by Falling Over: All his victims will immediately kneel over (Or fall from the sky if they are flying) with their corpses hitting the ground like a marionette whose strings are cut off the moment his instant death ability takes effect.
• Devilish Hair Horns: Zig-zagged. The adaptations give Yogiri's hairstyle its signature cyan tufts that slightly curl upwards to look like oni horns but while Yogiri is a reasonably moral person who cares deeply for his loved ones, his status as the embodiment of the end itself and how casually he uses his powers on those who would potentially harm or even annoy him and said loved ones is a tad concerning.
• Dissonant Serenity: No matter what carnage is unfolding around him, or that he's causing, Yogiri is always fairly deadpan.
• The Dreaded: Yogiri is this back on Earth where multiple organizations and supernatural entities have either cowered in fear, tried to seal him away or kill him. When he gets transported from Earth, everyone, sans those closest to him, sighs in relief. It didn't take long for Yogiri to become the most feared being in that other world.
• Empty Eyes: The only sign his instant death ability has taken effect on his victims as they often Dies Wide Open with the shine and irises of their eyes gone without a single trace.
• Everyone Has Standards: Yogiri made self-imposed rules to avoid killing people unnecessarily:
  • He would kill whoever tried to kill him first or even slightly aiming their killing intent at him even if they weren't really about to attack him. The same goes for his loved ones such as Tomochika and Asaka, whether it's an indirect attempt towards him or not, since their lives are as important as his and sworn to protect them at all costs.
  • Yogiri would kill you if you were the accomplice of the guys trying to harm him or his if he finds it necessary, no matter if you are mind-controlled or not.
  • If you try to rob or kidnap Yogiri or the people he cares about, he will kill you if you justify yourself, meaning that you would commit the same crimes in the future if he lets you go.
  • At the same time, he wouldn't kill people or things that are just annoying him or find them gross (but would if you piss him off enough), attacking him in non-lethal ways, (he learned self-defense martial arts for those cases), or causing chaos while fighting another powerful being in front of Yogiri as long as his life is not in danger. You can also get away with roughhousing him a bit, as long as you don't really mean to hurt him.
  • Yogiri can also be surprisingly concerned about the well-being of people he is not on bad terms. He asked a couple of times if David was ok after receiving a Groin Attack from Tomochika, and even stopped him from jumping a rift and protected him when they were falling from it.
• Exact Words: Yogiri ordered Yoshiaki Fukuhara and Daimon Hanakawa not to move after he killed Ryousuke. Yoshiaki concerned about Ryousuke, knelt to assist him just to be instantly killed by Yogiri for not listening.
• Eye Motifs: Yogiri's eyes normally glow as one of the few indicators when activating his ability. His true form is a dark void with countless eyeballs gazing at those aware of its existence for all eternity, denoting his omnipresent eldritch nature and bringing to mind the phrase "If you gaze long enough into an abyss, the abyss will gaze back into you".
• Fighting a Shadow: Yogiri's true self, "The End", is a separate entity that Yogiri is only a facet of. Even if Yogiri were to die, it would mean nothing for the true entity as it would just make another avatar later down the line.
• For Doom the Bell Tolls: In the anime, a soft bell chime can be heard upon activating his powers which is the last thing his targets would hear before they drop dead on the spot.
• Good Versus Good: Since he has little choice but to kill anyone who attacks him, Yogiri sometimes ends up being forced to kill genuinely good (or at least grey) people who see him as an enemy for whatever reason. This is part of why people tend to view him as a walking calamity.
• Hairstyle Inertia: In his flashbacks, Yogiri sports the exact same haircut, the two cyan hair curls included, back when he was a child.
• Hero with Bad Publicity: Hero is a stretch but he's one of the more decent people in the series, just wanting to stay out of trouble and protect his loved ones. Despite this, most of the people who know what he's capable of view him as an "evil god" with a Hair-Trigger Temper that would end everything at the slightest displeasure. Taken to its next logical step when Mitsuki reveals to the other world Yogiri's true nature and the untold amount of deaths he's caused leading them, even those that were on friendly terms with Yogiri to now gunning for him.
• Humanoid Abomination: He's the personification of The End of All Things taking on the form of a human boy. Basically, he's closer to an SCP than an isekai protagonist archetype.
• Human Weapon: The Institute originally wanted to use his ability as a counter-weapon for Japan against nukes, but switched to just keeping him contained and monitored when they couldn't find a way to reliably control him.
• Iconic Item: When not in danger, Yogiri likes to unwind with his handheld game console and play Monster Hunter (The sole game he downloaded). It's the only possession he would go out of his way to save such that he worries more about the battery life in the mostly technology-less other world than his own and got a portable hand-crank charger to fix the problem. The anime would upgrade the console to a modern Nintendo Switch and changed the game into a nondescript RPG (depicting a hack-and-slash fight against a dragon with a vague UI resemblance to Fortnite) with no resemblance to the aforementioned game.
• I Have Many Names: Yogiri Takatou is the name given by his caretaker Asaka and the one he prefers. Before that, he was called ΑΩ (Alpha Omega), the Institute's codename for him, and Lord Okakushi by other organizations.
• Killer Rabbit: Yogiri in his childhood was as innocent and endearing as you could expect, but was still just as powerful and even more prone to killing people if they simply got in his way. Thankfully, Asaka was later able to raise him with a stronger sense of morality.
• Killing in Self-Defense: He does this constantly in the other world, thanks to the abundance of monsters, violent criminals and superpowered psychopaths. Until he became more precise with his ability, he essentially had no choice but to kill someone if they attacked him since a lot of the other world's inhabitants are strong enough to tear him apart in an instant if he hesitated.
• Literal Metaphor: Yogiri's true form of a dark void of nothingness filled with countless unblinking eyeballs eternally staring at those aware of its presence is based on Friedrich Nietzsche's phrase "If you gaze long enough into an abyss, the abyss will gaze back into you".
• Logical Weakness: Discussed upon but ultimately subverted since any circumstantial weaknesses Yogiri may have cannot be conventionally exploited or relied upon at all against something as extremely overpowered and all-eclipsing as his instant death ability:
  • When all the gates of his ability are closed, Yogiri is completely powerless and can be killed normally as while he is the embodiment of the end of everything, his vessel is just an ordinary human boy. Alas, these gates are willingly self-imposed by Yogiri himself who can freely open them at any given moment when necessary.
  • Yogiri is noted to be an extremely heavy-sleeper and especially becomes tired the more he uses his powers, implying he cannot be awake for an indefinite amount of time like a normal person. However, he will never be endangered during his habitual naps as his secondary power of detecting Killing Intent would automatically activate his ability towards any threat to his life even while unconscious.
  • The one actual weakness Yogiri has is that he cherishes his loved ones dearly and makes a conscious effort not to kill them while using his powers no matter what. Unlike the other two, this was the only instance where Yogiri was caught off guard as the assassin sent to kill him had stolen a robotic copy of his longtime Childhood Friend Enju from Earth, leaving him no time to react when she suddenly threw a knife at him. Luckily, Tomochika was there to catch the knife with her lightning-quick reflexes before it could connect with Yogiri's body.
  • While his main ability is unstoppable, Yogiri's self-defense system would theoretically be the key to defeating him. Alas, its automatic, super-sensitive nature means anyone attempting to end Yogiri's life gets returned the favor the moment he detects Killing Intent. The conflicts involving Yogiri aren't about finding an attack that can bypass his defense but what Yogiri considers an attack to defend against in the first place:
    • Going faster than what the human eye can perceive to attack just results in your corpse being flung at accelerated speeds and crashlanding beside him.
    • Having external sources of power doesn't work since Yogiri can sever whatever connection to access them as Mei Hanamiya can attest to when she was Brought Down to Normal after he killed the feline gods in her dreamscape.
    • Destroying the universe with Yogiri in it is a no-go as his killing and sensing range limitlessly extends beyond space and time so no distance is safe from the likes of him. Take the Heavenly Record Eater who died trying to consume the other world.
    • Indirect attacks also count since Yogiri can sense AOE attacks and promptly kill the source before it happens. Ultimate Extermination God learned this the hard way when in her pursuit of annihilating everything and everyone, she neglected to think there might be a higher being caught in her crossfire who is able to stop her which is what Yogiri did.
    • Changing Yogiri's fate is laughable as he's the end point of all fate and everything else before it ceases to exist which Aoi Hayanose confirms there's no future where Yogiri can be defeated without The End of the World as We Know It. Yukimasa Aihara couldn't avoid his fate no matter what he wrote in his future-predicting book since it erased Yogiri's potential death and replaced it with Yukimasa's definite one.
    • Stopping time to strike him down is actually A Fate Worse Than Death when Darian finds out that he's not alone in frozen time when Yogiri's true form and second-line of defense pays a visit. Unable to comprehend the entity, Darian immediately offs himself to escape into another timeline from it but is driven insane once he realised it is everywhere until the end of time.
    • Targeting either Tomochika, Asaka or Enju as leverage against him would make Yogiri kill the attacker on the spot because he considers it an emotional attack from not wanting to see his loved ones harmed in any way.
    • Seducing him under malicious intentions like the scantily clad, dancing succubus would momentarily distract him for sure but would still kill anyone doing so regardless since he considers that a mental attack. The same goes for other mind-control and brainwashing methods.
    • Guilt-tripping him into killing himself from the countless deaths he caused doesn't convince him in the slightest since he finds Killing in Self-Defense to protect him and Tomochika absolutely necessary due to the other world being too dangerous for pacifistic methods, especially when its genocidal inhabitants are too prideful and stubborn to listen to him, and retorts back the hypocrisy of everyone else doing the same for even fewer reasons.
• Manipulative Bastard: Justified. Yogiri doesn't blink an eye to threaten, torture or outright kill enemies to force them or others to do what he says and would kill them anyway after getting what he wants if he feels like it as they are too arrogant and dangerous to listen to him any other way. Yogiri constantly threatens Daimon with death or killing parts of his body like his eyes, to make him accept his demands, although in Daimon's case, it seems to be more of a bluff than anything.
• Meaningful Name:
  • The name Yogiri can be translated as "night fog", and Takatou as "tall and distant". This references his insurmountable true nature as an all-consuming void at the end of creation.
  • His previous name ΑΩ references the first and last letters of the Greek alphabet to denote how Yogiri is the beginning and the end of all things.
• Meaningful Rename: Back when he was still called ΑΩ (Alpha Omega) under the supervision of the Institute, his caretaker Asaka Takatou gave him the proper name of Yogiri because she sees him as a human rather than an embodiment of death with the terrifying ability to end anything on a moment's notice like the rest who knew his existence. Yogiri would also take on Asaka's surname to signify she's his surrogate mother and is part of the Takatou family.
• Nice Job Breaking It, Hero: Subverted and Played for Laughs. Yogiri is ashamed for killing the demon god which basically wastes the time, effort and lives of everyone taking part in the Sword Saint trials. Even Yogiri killing many of the tower's guardians cannot be seen as bad as this is just a long-awaited Karma Houdini Warranty for them after they got away with murdering innocent people under the excuse of being Necessarily Evil.
• Non-Indicative Name: Yogiri describes his ability as "Instant Death" which is technically true from an outsider's perspective as his victims would unceremoniously kneel over dead the moment he activates his ability but it isn't as simple as he makes it out to believe. In actuality, Yogiri is ending one's existence meaning unlike death, nobody can return to life ever and only calls it as such since it's a pain for him to explain the true and confusing extension of his abilities every single time. This unfortunately leads to Yogiri being confronted more than he wants by stubborn, prideful individuals who are either immortal, higher deities or have death-preventing countermeasures and think they can take him on, only to prove the opposite seconds later.
• O.O.C. Is Serious Business: Yogiri never raises his voice beyond a listless monotone so when he suddenly shouts for everyone to get behind him over an impending nuke explosion, you know this threat is more serious than his usual fares. Right after, Yogiri kills the individual body parts of Sion one by one even though he avoids this application of his power since he's not a fan of Cold-Blooded Torture, meaning even he is sick and tired of Sion's nonsense and wants to go home, along with the implications that he cared for his classmates all along and he has his own Tranquil Fury Revenge for all the manipulated and fallen classmate under Sion's watch.
• Pet the Dog: Yogiri decides to spare one of Yuuki Tachibana's harem members, Chelsey, who is just a child.
• Poor Communication Kills: Yogiri would rather avoid using his instant death ability more than necessary but his less-than-desirable negotiation skills and sheer bluntness don't mesh well with the unrelenting pride of those he's trying to talk it out with, leading him to kill them anyway. Tomochika and other associates often try de-escalating situations on his behalf, but usually whoever they're dealing with are inherently unreasonable.
• Power Limiter: To make himself more human and avoid accidentally destroying the world, Yogiri established several seals on his ability that limit its range of effectiveness, all of which he can unlock at will if he finds it necessary.
  • The first gate when opened allows him to kill physical things which includes not only any sentient lifeforms but also inanimate objects and the undead. Anyone who is afflicted by this power cannot return back to life ever again, not even through resurrection, time travel or the Reset Button, as their existence is wiped out forever across the space-time continuum.
  • The second gate extends its range to phenomena invisible to the human eye. He uses it to kill his momentum to prevent falling to his death in the 7th layer of the Dark Lord's dungeon, briefly mentioning that he avoided killing the gravitons surrounding him to not accidentally kill all gravity. Later on, he would survive a nuclear explosion by individually killing the radiation, heat, light and sound emitted, leaving him, Tomochika and their remaining classmates completely unscathed by the aftermath.
  • The third and final gate lets him kill on a meta-physical level like concepts and other abstract ideas. The most prominent examples would be Yogiri considering tearing a rift in the other world's boundaries in order to get back home as a last resort but it requires killing everything else in between and then killing the Great Sage's relationship with the other world, making him an unconscious body sustaining the other world through his dream while trapped in a never-ending void of nothingness.
• Power Misidentification:
  • Upon meeting up with his class at the capital, Yogiri downplays his instant death ability to only being able to kill insects with his "gift" [Insect Hunter] so as to avoid any suspicion from his classmates. However, this leads to them underestimating and targeting him during the death game, leading him to kill his classmates anyway.
  • Speaking of which, his instant death ability is not as clear-cut as everyone else would have believed since there is a clear distinction between killing something and ending one's existence altogether as there's always life after death but never the end. As Aoi puts it, Yogiri is not the embodiment of death but the end of everything itself with his true form being an all-eclipsing, never-ending abyss of nothingness inescapable to anyone until their consciousness fades away to become one with the void. In short, Yogiri oversimplifies his ability to make it easier for others to understand but that leads those with immortality or any death prevention methods to fight him and heavily pay the price with their lives.
  • In his youth, Yukio and the scientists in the Institute thought Yogiri could only instantaneously kill someone he made direct eye contact with, not sensing their Killing Intent, and had several precautions installed around this presumption. The day Asaka was kidnapped thoroughly disproven this theory as not only Yogiri can kill people not in the same room as him but also those he's never even seen, terrifying the scientists who conclude Yogiri is simply unstoppable.
• Red Eyes, Take Warning: In the anime, his brown eyes briefly glow red upon using his ability. The eyes of his true form in the opening also have red pupils.
• Required Secondary Powers: On top of his already overpowered ability of permanently killing anyone or anything, Yogiri also has an impregnable self-defense mechanism that senses any Killing Intent directed towards him or his close associates and would immediately trigger his aforementioned ability. Thus, all sneak attacks against him are rendered moot when he can kill his would-be assailants for just thinking of carrying it out.
• Sealed Evil in a Can: Subverted in every way because (a) The Institute Yogiri was with locked him underground for the world's safety but to their horror however, they never contained him and Yogiri just didn't care to leave and (b) the one time he did leave was to rescue his beloved mother figure, Asaka.
• Stock Light-Novel Hero: Seemingly played straight at the surface but thoroughly deconstructed. He's got the generic appearance, Deadpan Snarker personality and absurd levels of strength down but the other characters treat him less like a powerful hero and more like a terrifying calamity that devours everything in its path and poses a constant threat to existence as a whole, especially given that his power isn't even flashy or visually exciting, it's just death. His complete lack of care for anything happening around him and general Blue-and-Orange Morality also make him difficult to project onto.
• The Stoic: Justified as this attitude towards his ability prevents unnecessary death and destruction caused by himself.
• Story-Breaker Power: Yogiri has the power to instantly kill anyone or anything opposing him. It's as broken as you expect.
• Tranquil Fury:
  • Normally, Yogiri is only going to kill his opponents if they choose to attack him and is willing to let them go if they step down or are rendered defenseless. However, after the leader of an assassin guild copies a robot that bears a likeness to his childhood friend to kill him, Yogiri is so pissed off that even after the leader is defenseless, he wants to kill him to stop him from copying any more of those robots.
  • Him "partially killing" Sion and later her assistant and implied lover Yoichi, partly due to Sion's apparent refusal and inability to bring the class home, and partly out of Revenge of all the deaths under Sion's hands or orders.
• Unskilled, but Strong: He has no clue how to actually fight but can One-Hit Kill gods thanks to his ability and can even physically defeat low-level monsters by using his threat-detecting sense to dodge and parry attacks. He does learn a bit of swordsmanship and Dannoura-style martial arts but mostly uses them to respectively increase his focus and incapacitate someone without relying on his ability.
• Unwanted Harem: Parodied and Downplayed. A few females including Tomochika, Ryouko and Carol gravitated around Yogiri which some people took notice of. However, Tomochika is the only one who gradually gains romantic interest in him who likewise feels the same while the other two are doing this because it's their job as spies with Ryouko in particular being deathly afraid of him.
• With Great Power Comes Great Insanity: Averted. He's fully aware of the extent of his powers but tries not to use them unless it's absolutely necessary.
• Would Hit a Girl: Doesn't matter how cute and quirky a female enemy is, an enemy is an enemy and enemies need to die.
  • In the Flashback, the younger Yogiri threatened an Institute researcher with her death to free him and then, he proceeded to march to the headquarters of an organization to rescue Asaka, killing multiple female staff including the leader who held Asaka at gunpoint.
  • Even knowing that Yuuki Tachibana's harem is under his Mind Control, Yogiri won't show mercy to them when they attack him and Tomochika. The only reason there are survivors however is because Yogiri can't bring himself to hurt a crying child and he has already taken out Tachibana.
  • Having no apparent attachments with his classmates back on Earth, Yogiri has no problem harming them, even literally hitting Mei Hanamiya hard in the stomach with an elbow strike.
  • Then there's Sion who Yogiri proceeded to put through Cold-Blooded Torture after finally getting fed up with her assassination attempts on him along with how Sion manipulated his friends to kill each other for her amusement. Even worse despite having some reluctance on doing this, he was apparently enjoying causing Sion pain.
• You Cannot Grasp the True Form:
  • Aoi immediately vomits and breaks down in terror when she sees Yogiri's true nature as a dark inescapable abyss of nothingness. It's only thanks to her relative rationality that she didn't go completely insane and try attacking him.
  • Darian stops time in order to bypass Yogiri's defense mechanism but that led to an even worse outcome when the latter's true form decided to unveil itself as unblinking eyeballs perpetually staring down Darian while following his every movement. Darian was so disturbed by this revelation that he started laughing uncontrollably like a madman before offing himself to escape into another timeline, only to discover that the eyes had always existed everywhere until the end of time. It didn't take long for the leader of the Invincible Battalion to quickly go mad while screaming in horror at something only he could see.

Tomochika Dannoura

Voiced by: Miyu Tomita

Powers: Dannoura-Style Martial Arts

Class: Egoistic Blacksmith (Fake), None (Actual)

Yogiri's classmate, travelling partner and love interest, as well as the successor to the Dannoura family's martial arts style.

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• Audience Surrogate: Quick to complain or comment on all the weirdness that's happening around her.
• Bait-and-Switch Comment: When Yogiri had no choice but to kill her former Best Friend Romiko, Tomochika gives a few parting words:
  Tomochika: Romiko...
  [Sad piano music plays over her limp, lifeless corpse]
  Tomochika: It can't be helped, let's move on.
• Combat Pragmatist: Part of the Dannoura-style involves resorting to dirty tricks like a Groin Attack.
• Groin Attack: Her go-to move when dealing with male enemies which Yogiri lampshades why she always resorts to this while shuddering.
• I Have Boobs, You Must Obey!: Unintentional on Tomochika's part but having her breasts pressed against him spurred Yogiri to protect her. Tomochika is not happy to hear this:
  Tomochika: [Skyward Scream] THERE ARE ZERO GOOD MEN IN THIS WORLD!
• Morph Weapon: After bargaining with Mokomoko, a dying sentient Humongous Mecha gave Tomochika a shapeshifting material that can change into any weapon or armored clothing on Mokomoko's command. She later uses this to fake her "gift" upon meeting up with her class.
• Like Parent, Like Spouse: While not Yogiri's girlfriend, Tomochika shares many characteristics with his surrogate mother Asaka Takatou such as her steadfast yet kind personality, her tendency to comment upon the oddities in their adventures, her acceptance of his death ability and how she treats him like a regular human being than an Eldritch Abomination. This is why Yogiri grew to like her and put Tomochika on his priority list that he only reserved for his loved ones.
• Meaningful Name: The kanjis in Tomochika's name stand for "friend", "near", "parent" and "intellect", the former two indicating her status as Yogiri's close and only companion who always sticks by his side and the latter two highlight her insightfulness and maturity towards Killing in Self-Defense and how she reminds Yogiri of Asaka.
• Not So Above It All: Tomochika usually comes off as more grounded and reasonable than her classmates and acts as the Straight Man to Yogiri. However, she does have an odd thought process that leads to Skewed Priorities at times like expressing her disappointment when Yogiri killed Masayuki before the latter could finish transforming or when the three Pornmancers were unceremoniously Killed Offscreen. She also expected Yogiri to kill Santarou and the Giant Robot just because their fight was getting in the way, even though they hadn't done anything wrong yet.
• Power Misidentification: After meeting up with her class in the capital, Tomochika explains away her survival as her "gift" kicking in later than expected rather than the more convoluted explanation of awakening the Dannoura martial arts from her ancestor Spirit Advisor. She easily fakes [Egoistic Blacksmith] using the flexible, shapeshifting material given by the aggressor robot as armor and weapons she can only create for herself.
• Protectorate: Yogiri decided that he'd protect her as long as they were in the other world together thanks to her breasts being soft though slowly grew to like her for reasons beyond that. Ryouko and Carol also elected to protect Tomochika from any form of harm to prevent Yogiri from causing mass destruction in retaliation.
• Reluctant Fanservice Girl: Tomochika does not like being put through compromising situations where she's forced to show her assets and even worse, stripped till she's in the nude.
• So Beautiful, It's a Curse: Several characters never bothered to hide their lusts for Tomochika and made multiple attempts to have her become their Sex Slave.
• Super-Senses: Noted to have incredibly good eyesight unrelated to the Dannoura martial arts. This has helped the trio when they have to scope out and pinpoint threats, especially of the aerial variant, that Yogiri cannot see.
• Tsundere: Very shy to the point of irritation when it comes to love or her feelings, but she actually cared for Yogiri.

Mokomoko Dannoura

Voiced by: Tomoko Kaneda

Tomochika's familial guardian spirit in charge of protecting and guiding her as the Dannoura style successor.

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• Breaking the Fourth Wall: A recurring gag is her making up an alternative title for the series when Tomochika gains or uses a new ability. Doubles as Self-Parody for overly-descriptive light novel titles.
• The Friend Nobody Likes: Neither Tomochika nor Yogiri particularly enjoys her company, especially because of her bombastic personality and grating voice, but have to live with it since she cannot leave the former's side. While she does look after both of them, her usefulness is very limited and they usually treat her as somewhat of a nuisance.
• Invisible to Normals: She only lets herself be visible to Tomochika and Yogiri due to being an intangible spirit although people with necromancy or other ghost-based powers can perceive her.
• Large Ham: Always loud and expressive while speaking.
• Meaningful Name: Mokomoko translates to "lumpy" or "fluffy" in Japanese which can be used to describe her chubby, cartoonish appearance as well its repetitiveness denoting her status as mostly the Third Wheel to Tomochika and Yogiri's exploits.
• Plucky Comic Relief: This is most of her contribution to the trio, other than sometimes providing advice or protection.
• Properly Paranoid: She secretly resists Sion's Battle Song installation on Tomochika, suspicious of its features despite granting the user skills and talent. Her fears were not misplaced since it also had the effect of turning them into homicidal psychopaths and Sion's puppets.
• Repetitive Name: Her name is the word "Moko" twice which Tomochika lampshades as being incredibly lame.
• Shipper on Deck: Strongly suggests Tomochika should get together with Yogiri much to Tomochika's irritation.
• Spirit Advisor: To the Dannoura bloodline since the Heinen period and is currently guiding Tomochika on being the successor to the Dannoura martial arts as well as her relationship with Yogiri.
• Stronger Than They Look: She looks and acts silly but is still a master martial artist and can make quick work of powerful spirits.
• Strong Family Resemblance: Tomochika sees her as a dead-ringer to her older sister, albeit with traditional clothing and in spirit form.

Classmates

General

• Brainwashed and Crazy: They most likely did not start out as vicious, murderous, amoral psychopaths, but the Battle Song system is compelling them to become that way. Not that it buys them any mercy from Yogiri, since they’re threats and he only deals with threats in one way. It’s actually rather tragic.
• Dwindling Party: Excluding Yogiri and Tomochika, the class stood strong at a total of 35 students but thanks to a continuous dose of Laser-Guided Karma, Suicidal Overconfidence and Chronic Backstabbing Disorder, only four of them remained standing by the end of Volume 4:
  • Ayaka and Yuuchiro lost their lives when the class abandoned them to become dragon bait in their first mission.
  • During the main trio's journey, Yogiri had to put down three classmates with his instant death ability after they won't stop harassing either him or Tomochika.
  • Ayaka rebooted herself before racking up a body count of eight as revenge.
  • The death game sure sped things up after Sion got tired of waiting which included another three students dead at Yogiri's feet and cultivated in a nuke explosion. This resulted in only Hanakawa, Carol, Ryōko and Ootori surviving the whole ordeal as the former three were with Yogiri at the time who neutralise the blast while the latter had flown away far enough to get partially damaged.
  • Even after the world reset, none of the students Yogiri killed came back in addition to three more of them who made an attempt on his life upon finding out his death toll.
• Freudian Excuse Is No Excuse: Daimon tries to point out to Yogiri that all of them are under the influences of the Battle Song system but Yogiri couldn't care less since to him, that hardly justifies the untold amount of harm and deaths they have inflicted.
• Irony:
  • Yazaki had convinced the class that the four giftless (Yuuchiro, Ayaka, Tomochika and Yogiri) would drag them behind and should leave their fates of the dragon. Turns out, three out of these four giftless classmates have abilities way more powerful than gifts, especially Ayaka who absorbed the dragon's powers, and proceeded to outlast almost everyone with Yogiri and Ayaka even being the cause of their deaths in some cases.
  • Additionally, the few students who were acquainted with Yogiri, the living embodiment of the end of all things who can kill anybody with a single thought, are the only ones to survive the death game as Yogiri had protected them using his powers.
• Killed Off for Real: By the end, a total of nine students^note In order: Ryousuke Higashida, Yoshiaki Fukuhara, Yuuki Tachibana, Yukimasa Aihara, Romiko Jougasaki, Ayaka Shinozaki, Yuuchiro Kiryuu, Asuha Kouriyama and Sora Akino are permanently dead at the hands of Yogiri even after the world reset.
• Laser-Guided Karma:
  • The class is being systematically killed off by Ayaka after they had abandoned her to be dragon bait. To add more to the karma, Ayaka is using the dragon's powers to help in her revenge against them.
  • Sion put the class through a death trial to weed out all of the useless members much like how they had abandoned the non-blessed classmates to their fate.
• More than Mind Control: Downplayed. Only a few students harbor ill will or some negative traits that are now brought to the surface while the others can be excused solely on the Battle Song System.
  • Post-Volume 11 has Sora Akino no longer influenced by the system but she still treats others as disposable pawns which she sics against Yogiri.
  • Although Ryouko was forced to abandon Yogiri, it's implied her fear of the latter may have played some part in her decision.
• New Powers as the Plot Demands: Due to any character being their own Hero of Another Story, it's quite common for a number of classmates to have special abilities and skills besides their gifts out of nowhere. This includes:
  • Haruto Ootori being a bird-like beastkin and hiding his wings this whole time.
  • Mei Hanamiya's gift actually comes from a pair of cat gods after they accidentally killed her during their scuffle days before the fated school trip then reviving and granting her their powers as compensation.
  • Romiko Jougasaki lying about her gift being [Counter] when it's the overpowered [Necromancer].
  • Ayaka Shinozaki's real nature as a humanoid robot who was built for the purpose of coexisting with Yogiri in case the latter ended humanity.
• No Honor Among Thieves: They're pretty much compelled to manipulate and backstab one another by the Battle Song System.
• Token Good Teammate: Ryouko and Carol. Downplayed since they are specifically amicable towards Yogiri who they know is a Humanoid Abomination and prefer not to be on the receiving end of his wrath.
• We Used to Be Friends: Tomochika and Ayaka took their classmates' abandonment of them pretty hard. Subverted for Yogiri who never bothered to interact with them back on Earth hence why he has no problems killing them off in droves.

Daimon Hanakawa

Voiced by: Hiro Shimono

Class: Healer

[Healer] makes him specialize in powerful recovery skills in exchange for being poor at adventuring but he soon realises that the best healing magic in the universe is no match for Yogiri.

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• Adaptational Nice Guy: Downplayed. The manga removes his rapist undertones in his debut as Hanakawa's plans to rape and enslave Tomochika went to Higashida and Fukuhara instead and he just wanted to comfort her once they were done. However, he was still on board with the two's plans even though he didn't want anything to do with the first part.
• Butt-Monkey: His purpose after the first couple of chapters is to be tormented by select antagonists. He's unlikely to be sympathetic given what he tries to do in said first couple of chapters.
• Corrupted Character Copy: Of Haruyuki Arita. Both are short, stocky "protagonist" type characters voiced (albeit differently) by Hiro Shimono, a "protagonist" archetype voice actor. However, while Haruyuki is shy and has low self-esteem, he eventually overcomes it through sheer determination and being the kindhearted soul he is, won the affection of several girls whom he didn't expect to be with. In contrast, Hanakawa is a perverted jerk and Dirty Coward who, despite having his own feats, remains a cowardly jerk through the end.
• Depraved Bisexual: He mostly lusts after girls but would also be fine with a femboy (Lute).
• Dirty Coward: An annoying trait Hanakawa has, other than his perverted nature, is how easily he cowers in fear when facing a stronger opponent and will switch allegiances at the drop of the hat if it means his continued survival.
• Hero of Another Story: He's already been isekai'd to the same world in the past alongside two other classmates (who became the first two victims of Yogiri in the other world), where he was given a powerful healing ability and tasked with defeating a demon lord.
• Hypocrite: For a guy who was initially willing to murder Yogiri for absolutely no good reason and enslave Tomochika, he freaks out every time Yogiri nonchalantly kills someone and loudly calls him out for it.
• I Choose to Stay: In the volume 14 of the light novel, which is the finale, he chose to stay even though Kouryu offers everyone a way to go home. In volume 15, which is an "after story" of sorts, he chose to go back to his home universe right after Kouryu decided that The Magic Goes Away in order to prevent more disorder.
• I Have You Now, My Pretty: Attempts to enslave and presumably rape Tomochika in his debut.
• Power Stereotype Flip: Hanakawa was gifted with strong healing and recovery abilities but only uses them for his own self-preservation as the Dirty Coward, lecherous pervert he is.
• Terrible Trio: With Higashida and Fukuhara upon returning to the other world after being long past its saviors who plot to rape and enslave Tomochika. However, this partnership didn't last long when Yogiri kills Higashida and Fukuhara, leaving Hanakawa as an Ineffectual Sympathetic Villain without anyone to rely on.

Ayaka Shinozaki

Voiced by: Rumi Ōkubo

Powers: Dragon Magic

Class: None

An android created by the Institute to pose as a human in Yogiri's class and adapt to society. Her existence is part of a project by the Institute to create a new generation of humanity that could live after a hypothetical apocalypse caused by Yogiri.

She didn't receive a gift like the majority of her class but later rebooted and absorbed the dragon that initially killed her to gain its powers which she used to swear vengeance on her classmates.

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• All for Nothing: Ayaka's Roaring Rampage of Revenge is rendered pointless when the nine deaths she caused are ultimately reversed when the world resets in volume 11 and doesn't get a second chance as she herself ceases to be after Yogiri destroys her personality unit.
• Big Bad Wannabe: After her class abandoned her to the dragon, she proceeded to enact vengeance on her classmates and murdered nine of them in cold blood. Alas, Ayaka targeting her class means targeting Yogiri who as always deals with his enemies by instantaneously killing them and rubbing salt in the wound, all her casualties miraculously come back alive due to the world reset while she's still wiped out of existence.
• Death of Personality: Yogiri destroys the unit that holds Ayaka's personality.
• Expy: She's basically a Synth Courser and Dragonborn rolled into one.
• Irony: Ayaka is "killed" by the being that she is meant to coexist with.
• Not Quite Dead: Ayaka is still in top physical condition following her "fight" against Yogiri however the personality unit that holds the other units together was destroyed, rendering Ayaka inactive.
• Ridiculously Human Robot: Given that her purpose is to be a perfect replica of a human.
• Roaring Rampage of Revenge: Ayaka makes it clear she's out for her whole class' blood for abandoning her to die, mercilessly killing eight of her classmates at one go with her newfound dragon powers.
• Split-Personality Team: Ayaka's mind has multiple units in charge of different decisions and functions of the body, with the personality unit being the "main" one.

Ryōko Ninomiya

Voiced by: Kiyono Yasuno

Class: Samurai

A serious agent sent by the Institute as one of the three students planted in Yogiri's class to spy on him. Since she's from the laboratory department, the normally calm, unflappable Ryōko is utterly terrified of Yogiri from seeing his powers firsthand.

Her gift [Samurai] specializes in swordsmanship using Japanese swords which supplements her background as a kendo practitioner.

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• Aloof Dark-Haired Girl: Zig-Zagged. Normally, she can be this but whenever Yogiri's around, she's reduced to a panicking, crying mess.
• Enraged by Idiocy: After hearing Carol's plan to take Tomochika as a hostage to control Yogiri, Ryouko loses her entire composure and grabs the girl by the collar, yelling at her to go die on her own if she wants to and not drag everyone else down with her.
• Oh, Crap!: Ryouko reacts like this whenever Yogiri unlocks more of his powers. It's telling enough that she's glued to her phone warning about him rather than paying attention to Sion ordering all of the class to take part in her death game.
• Only Sane Man: Even when under the influence of her Gift, Ryouko has the common sense to know how much of a threat Yogiri is and chooses not to antagonize him.
• Sycophantic Servant: Acts like this to Yogiri out of fear, groveling and profusely apologising at the sight of him, and employs the more laidback, casual Carol to do the same. She fervently insists that Yogiri should stay put and not do anything and that she'll handle everything for him.

Carol S. Lane

Voiced by: Anna Suzuki

Class: Ninja

An American agent sent by the Institute posing as an international student to spy on Yogiri alongside Ryōko but has a casual, flippant attitude toward him as being from the agency, she never experienced the true extent of his powers.

Her gift [Ninja] specializes in combat and covert operations using the art of ninjitsu.

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• Bitch in Sheep's Clothing: Carol hides a cunning side behind that friendly face as she thinks about using Tomochika as a hostage to control Yogiri.
• Foreign Exchange Student: Given she's from the American branch of the Institute, Carol poses as an international student wanting to learn about Japanese culture as her cover story to spy on Yogiri.
• McNinja: A blonde American who gets the abilities of a stereotypical cinematic ninja.
• Punny Name: Her middle initial and last name phonetically spell out "slain" which is fitting given she's a Ninja with combat and assassination as part of her job scope.
• Underestimating Badassery: Whether these are her genuine feelings or the result of the Battle Song system, Carol treats Yogiri pretty lightly and makes plans to control him. She finally gets the point after witnessing Yogiri torture Sion.

Suguru Yazaki

Voiced by: Shogo Sakata

Class: General

His gift of [General] enables him to command a large group of people towards a single goal (Although this doesn't stop others from opposing).

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• Big Bad Wannabe: He was seemingly set up to be a major antagonist as he was the one who abandoned his giftless classmates to death but that would be the only crime he committed towards them. The next time Yogiri and Tomochika met Yazaki, he got replaced as The Leader by Sora Akino and he ultimately suffered pathetic deaths in all adaptations.
• I Did What I Had to Do: Yazaki claims he did the right thing by abandoning the other students to be dragon bait but Tomochika is hardly impressed with it given it turned out he wasn't The Leader at all.
• Karmic Death: In the anime, Yazaki treated his non-Blessed classmates as disposable pawns and abandoned them to be dragon bait. During the death game, Sora Akino used her own pawns to kill him.
• The Leader: Subverted. It initially seems like Yazaki is one in his first appearance as he makes the big decision of leaving the others who didn't receive gifts to be eaten by the dragon and convinces the others to do the same using his gift. However, when Yogiri and Tomochika catch up to the class, the leadership role went to Akino instead.
• Ludicrous Gibs: He stood no chance against Akino's fans who overwhelmed him from all sides before detonating and blowing up Yazaki into itty-bitty bits.
• Nice Job Breaking It, Hero: Supposed Hero. Yazaki elected to abandon the non-blessed students to be dragon bait which not only failed but the latter wound up causing the many deaths of Sages and Sage Candidates, including Yazaki's group. To add further salt to the wound, Hanakawa, a fellow classmate and Sage Candidate would be the one to unleash Mana whose minions proceeded to kill Yazaki and many of his party members.
• Small Role, Big Impact: While Sion is responsible for bringing Yogiri into the world, it's Yazaki's decision to abandon the other students to their fates that leads Yogiri to travel around and Ayaka to enact vengeance which results in the deaths of multiple Sages and Sage Candidates.

Sora Akino

Voiced by: Sayaka Kikuchi

Class: Idol

Her gift [Idol] allows her to strengthen the abilities of others who have taken an oath under her.

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• Cheated Death, Died Anyway: Akino was Eaten Alive during the death game but miraculously revived from the world reset. However, she takes this second chance at life to go after Yogiri so she might as well have jumped off a cliff for the same results.
• Eaten Alive: She was consumed and dissolved by one of Mana's Blob Monsters as material to reincarnate her brother.
• Hypocrite: After the world reset and not under the effects of the Battle Song System anymore, Akino was horrified by the countless innocent deaths Yogiri had caused and challenged his notion of Killing in Self-Defense by stating she would kill herself heartbeat than live any longer from the guilt. However, Yogiri isn't impressed by her myopic, naive way of thinking since she's also attacking him with her fans including a reluctant, body-controlled Hanakawa as suicide bombers during her proclamation and going by that logic, shouldn't she have killed herself by now? Once she insisted there's nothing wrong with that, Yogiri kills Akino since she would never acknowledge how hypocritical and guiltless about killing she actually is.
• The Leader: By the time Tomochika and Yogiri arrive at the capital, Akino has taken over the role from Yazaki due to her natural charisma and popularity as a famous idol alongside her gift being more suited for leadership than his.
• No Celebrities Were Harmed: Just two letters away from Tokino Sora as befitting for a former idol like herself.
• Suicide Attack: She can summon her fans who are so fanatical that they are willing to die for her by suicide-bombing her targets. Guess you can say they are die-hard fans.

Haruto Otori

Voiced by: Shōhei Komatsu

Class: Consultant

An intelligent and conniving person who has many hidden agendas up his sleeves.

[Consultant] is able to analyse all information regarding any topic and provide advice for the best possible outcome.

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• Character Tic: He fiddles with his glasses like any smart character would. Turns out, this is how he activates his class ability.
• The Corrupter: Downplayed since the whole class was already violent and unstable due to the Battle Song system but Haruto was the one who taught Tachibana how best to use his [Dominator] class to become more powerful, resulting in the latter enslaving and killing countless people.
• Four Eyes, Zero Soul: He has a habit of fixing his glasses while trying to figure out a way around Yogiri's instant death ability to assassinate him.
• Nice Job Fixing It, Villain: His continued attempts on Yogiri's life result in the latter unleashing more and more of his powers.
• Winged Humanoid: Since he's secretly a bird-like beastkin, Haruto has a pair of wings he keeps hidden from everyone unless he needs to fly away under dire situations.

Yuuki Tachibana

Voiced by: Yoshiki Murakami

Class: Dominator

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• Adaptational Nice Guy: The anime adaptation downplays him enslaving and hand-picking his harem without context to appear as if most of his harem really loves him.
• A Death in the Limelight: Tachibana was just one of the classmates transported to the other world but unlike them, he has his own episode as the main villain where we learn of his backstory, agenda and dispute with the protagonists. Unfortunately for him, he gets the same treatment when Yogiri dispatches the episode's villains: Anti-climatically falling over and permanently dead.
• Asshole Victim: Euphemia feels this way about Yuuki for destroying her village and enslaving her.
• Bad Powers, Bad People: Tachibana is one of the most despicable people in the class, with or without the Battle Song System, as a Narcissistic Jerkass womaniser. [Dominator] is a true reflection of his character as it essentially turned him into a brainwashing slave owner en masse which he put to good use when razing down Euphermia's village before forcing her to join his personal harem and attempted to do the same to Tomochika until Yogiri intervene.

Tachibana's Bodyguards

From Left to Right: Rika, Euphemia, Chelsey, Stephanie and Erika

Voiced by: Ayasa Itō (Erika), Nanae Kojima (Stephanie), Kiyono Yasuno (Euphemia)

Tachibana's top five subordinates acting as his main bodyguards or rather his personal harem given they are all attractive

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• Color-Coded Characters: All of them have a signature colour scheme as found on their hair and outfits with blue (Rika), white (Euphemia), purple (Chelsey), pink (Stephanie) and green/yellow (Erika) like Tachibana is collecting the rainbow.
• Color-Coded Elements: Riza's colour scheme is blue which goes hand in hand with her ice magic.
• Death of a Child: Averted. Yogiri can't help but feel pity towards Chelsey as she begs for her life and decides to spare her.
• Emotionless Girl: Initially played straight before eventually subverted. Chelsea does not emote upon her initial meeting with Yogiri and Tomochika. It was only when Yogiri killed all her dolls that she completely broke down and acted like a scared child.
• Magic Wand: Rika can only use powerful magic through magic wands and staffs as she's a Wandmaster. Thus, she carries loads of wands plus spares on her person just in case.
• Yandere: Due to Tachibana's Mind Control, they were utterly hostile toward Tomochika, especially Erika who secretly attempted to assassinate her which unfortunately cost her life.

Other Classmates

Yuuchiro Kiryuu

Voiced by: Hiroshi Watanabe

Class: None

A delinquent-looking student who is not only giftless but doesn't have any abilities to survive the other world. Needless to say, he was the first casualty of the class.

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• Sacrificial Lamb: His death at the tail of the Dragon cements the world Yogiri, Tomochika and the class was forcibly transported to is an incredibly dangerous world to survive in.
• We Hardly Knew Ye: As one of the four classmates who didn't receive a gift and the only one out of them to not have any hidden powers^note Yogiri has an instant death ability from being the personification of the end of everything, Tomochika is backed by her ancestor's martial arts alongside Yogiri's protection and Ayaka is a robot whom soon acquired the powers of a dragon, it's unsurprising that Yuuchiro never made it past the first chapter/episode and quickly became dragon bait.

Ryousuke Higashida and Yoshiaki Fukuhara

Voiced by: Youhei Matsuoka (Higashida) and Tatsumaru Tachibana (Fukuhara)

Class: Brave (Higashida) and Necromancer (Fukuhara)

[Brave] lets Higashida master all types of weaponry and basic magic while [Necromancer] gives Fukuhara the ability to zombify and control the dead.

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• Even Evil Has Loved Ones: Higashida may be an absolute scumbag but he still has a loyal friend in Fukuhara who immediately rush over to his corpse desperately begging for him to wake up before scumming to the same fate.
• Informed Ability: Fukuhara never got the chance to use his gift [Necromancer] onscreen upon meeting his permanent untimely death at the hands of Yogiri.
• Jack of All Trades: Higashida's gift makes him the all-rounder in offense and defense from the mastery of every kind of weapon and magic imaginable.
• Playing with Fire: When Tomochika badmouths him, Higashida shoots a fireball right past her as a warning shot big enough to incinerate half the bus and the cliff behind it. Yogiri, however, took this as a sign to retaliate back by insta-killing him as he had promised to protect Tomochika.
• Sacrificial Lamb: Their deaths foretell that for all the horrors this other world possesses, Yogiri is far worse and that is before it's revealed that the entire series is a Cosmic Horror Story.
• The Worf Effect: They may be the ex-heroes who have saved the other world from the demon with the s-rank gifts but in the presence of Yogiri, the two are just his first casualties among many, many others who foolishly challenge him in the other world and cement his role as The Dreaded.

Seiichi Fukai

Voiced by: Junta Terashima

Class: Shinigami

An ominous edge lord and the last agent sent to spy on Yogiri but unlike Ryōko and Carol, he came from the evil organization called "The Cult" who worshipped Lord Okakushi as their god.

With [Shinigami] as his gift, Fukai can instantly kill anyone on sight which makes him arrogantly believe he can replace Yogiri as the true Death God.

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• Electronic Eyes: Fukai's right eye which he hides underneath his bangs is a cybernetic implant used to track Yogiri's movement but remains inactive ever since Sion transported the class to her world. As such, he gouged out the eye and gave it to Yogiri to show he's dead serious about becoming the next Death God.
• Eye Scream: The Cult had his organic eyes removed and replaced with the Saint's Eye so he wouldn't be able to look upon Yogiri with the former.
• Ironic Death: Fukai proclaims he will surpass Yogiri to be the next death god thanks to his newfound gift with similar instant death abilities and awaits their death match. Anti-climatically enough, Fukai is instantly killed by Sion, the one who had given him his gift, as the very first casualty in her death game which Yogiri isn't even partaking in. Additionally, he's chronologically the thirteen death of the class since Fukai is so obsessed with Death.
• Magic Eye: He activates his gift using his left eye by unveiling it chunni evil-eye style with a red glint in which the surrounding enemies would drop dead to his feet.
• Oh, Crap!: After failing to kill Sion with his Shinigami powers, his newfound ego was replaced with pants-wetting fear right before his head was blown off.
• Small Name, Big Ego: Fukai thinks he has what it takes to essentially replace Yogiri as the true death god and is extremely confident that [Shinigami] would outmatch him even though (a) it's a way inferior version of Yogiri's ability given he gained it through the system and truly cannot kill everything, (b) Yogiri is not a death god but the embodiment of the end of everything so Fukai won't even stand a chance in the first place and (c) nobody takes him seriously since he constantly acts like a hardcore chunni.
• Unknown Rival: Rather Ignored Rival as Fukai claims his newfound gift would outmatch Yogiri's instant death ability in glorious battle once the time has come, only for Yogiri to brush him off as a Chuunibyou sporting nonsense and continue playing video games. When Sion commenced a death game amongst the class, Yogiri didn't even participate and Fukai was the first casualty when ineffectively used his gift against her.

Romiko Jougasaki

Voiced by: Rie Hikisaka

Class: Counter

Tomochika's friend who reluctantly had to leave her behind for her own survival but was relieved and overjoyed when she unexpectedly returned.

Her gift [Counter] allows her to know the exact number of anything at a single glance. That's it. That's all there is. ...Or is it?

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• False Friend: In part due to the Battle Song System, Romiko has no reservations in turning on her best friends to become more powerful, killing Jiyuna and was about to do the same to Tomochika until Yogiri intervened.
• Forgotten Fallen Friend: Parodied savagely as Tomochika looks like she is about to say some parting words to her former Best Friend in a poignant moment, only to brush off Romiko's death way too fast and nonchalantly given she tried to kill her and Yogiri moments before.
  Tomochika: [Sullen expression] Romiko...
  [Sad piano music plays over her limp corpse]
  Tomochika: [Indifferent as the music abruptly stops] It can't be helped, let's move on.
• Foreshadowing: Romiko claims to have [Counter] as her gift when she meets up with Tomochika again when in fact it's [Necromancer]. This may be another one of the series' ass pulls but it turns out this was foreshadowed as early as episode one where her status display states her class as the latter gift.
• Good with Numbers: Romiko's gift which she demonstrates to Tomochika by stating that 5,097 monsters are awaiting their class in one of their expeditions.
• Hoist by Their Own Petard: Romiko stole Mokomoko from Tomochika to empower herself however she didn't expect to be overwhelmed by the spirit's pure fear of Yogiri which caused her to be paralyzed till she finally released Mokomoko.
• One-Steve Limit: Turns out sage candidates don't all have unique gifts as Romiko reveals to actually have [Necromancer] as her, the same gift that her deceased classmate Yoshiaki Fukuhara although she controls spirits whereas he can resurrect zombies.
• What Kind of Lame Power Is Heart, Anyway?: While everybody else gets overpowered skills for either combat or everyday life, Romiko gets the short end of the stick with her fantastic gift of... counting. It's only good for expecting the precise number of monsters charging at her but not having any other power to counteract or do anything to decrease those numbers. She lampshaded her predicament of watching from the sidelines as her classmates fight for her lives since she's next to useless in a dangerous world where power dictates your survival.

Jiyuna Shijo

Class: Scribe

Tomichika's other friend who often hangs out with their mutual friend Romiko.

[Scribe] can let her record and remember any event with extreme precision.

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• Heart Is an Awesome Power: After Romiko's [Counter] gift was revealed to be a fake, Jiyana takes the spot for having the worst gift of the entire class since [Scribe] just makes her a walking journal and nothing more. However, she is able to accurately pinpoint the six classmates killed by Yogiri out of the sixty million casualties during the Great Sage's announcement which convinces most of the class to go after Yogiri
• Informed Ability: Her gift is never seen in action as it's mainly a non-combat ability which is useless against Romiko and was thus Killed Offscreen. This was subverted after the world reset where she puts it to good use during the Great Sage's announcement.
• Killed Offscreen: Romiko was implied to have killed her at some point after splitting from Tomochika during the death game.
• Those Two Girls: She is usually seen partnering up with Romiko as both were Tomochika's close friends and have gifts unsuitable for combat. Unfortunately for Jiyuna, Romiko took advantage of their bond to unsuspectedly murder her during the death game knowing fully well the former can't defend herself against the latter's secretly overpowered gift.

Shinya Ushio, Keiichi Munakata and Mitsuo Yatate

Voiced by: Tatsumaru Tachibana (Ushio)

Class: Porn Game Master (Ushio), Meister (Munakata) & Maniac (Yatate)

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• Killed Offscreen: After Ushio was beaten to nothing but a bloody corpse, Munakata and Yatate dashed out of the pub like a bat from hell. Alas, Ayaka catches up to them later on as the two were listed among the eight classmates killed during her rampage.
• Logical Weakness: Ushio needs to touch his target in order to stop time. Thus, we never see his gift in action as the King slices off his fingers and Ayaka pins down his arms then proceeds to give him a No-Holds-Barred Beatdown before he has time to react, the latter of which leads to his demise.
• Naughty Tentacles: Yatate can manifest black slimy masses of tentacles from his hands due to his affinity with hentai games. The tentacles act as an extension of him since he winced in pain from Ayaka ripping them apart.
• No-Holds-Barred Beatdown: After tracking Ushio and his two compatriots, Ayaka proceeds to pummel Ushio to death.

Riona Shirayama

Voiced by: Aina Aiba

Class: Gorilla

A Gyaru tomboy with experience in karate.

[Gorilla] increases her strength from ten to a hundredfold, making her the most formidable in hand-to-hand combat.

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• An Arm and a Leg: Gets her right arm hacked off by Ayaka but manages to reattach it with Akari's assistance. Only for Ayaka to deattach the same arm again from where they left their battle off.

Akari Misono

Class: [Nurse]

A petite, timid girl .

While the abilities of [Nurse] is an inferior version to [Healer], it can heal multiple targets at once.

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• Bit Character: She prominently appears in one scene right before being unceremoniously Killed Offscreen when Ayaka crashes through the medical ward.
• Dressed to Heal: She is appropriately enough dressed in a nurse outfit as her gift heals many people simultaneously including the reattachment of limbs.
• Killed Offscreen: Akari was killed at some point during the scuffle between Ayaka and Riona since her name was among the eight casualties from Ayaka's murder spree.

Yuugo Izumida

Voiced by: Tatsumaru Tachibana

Class: Cook

[Cook] can let him make delicious foods in an instant but Yuugo has been experimenting with his gift for amazing abilities his class scope can allow.

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• Heart Is an Awesome Power: One shouldn't underestimate the gift of [Cook] as not only does it make delicious foods but also cuts through anything like Ayaka's defenses and arm as long as Yuugo considers them "ingredients to slice and dice" and makes multiple clones of himself since "a cook must be able to prepare several dishes at once".
• Me's a Crowd: Yuugo is able to make multiple clones of himself by stretching his Gift's ability as you need an army of cooks to run a restaurant that is the battlefield.
• Those Two Guys: He's often seen around with Yukimasa since their unimpressive, non-combative gifts make them the two weakest male classmates.

Yukimasa Aihara

Voiced by: Kousuke Echigoya

Class: Reader

An introverted classmate who always has his nose in a book.

[Reader] can unsurprisingly let him read books in any language.

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• Foreseeing My Death: Yukimasa uses his book to find ways to kill Yogiri, only for the book to reveal to him that he's already dead the moment he comes into contact with him.
• Inside a Wall: Since his gift offers him no offensive abilities, Aishara was forced to hide in the crawl space of the castle's ceiling during the death game. Too bad the ceiling collapsed right in front of Yogiri after sensing his killing intent towards him.
• Madness Mantra: No matter what he tries to avoid his death with Yogiri, his book would only say some variation of Yukimasa just straight-up dying until it repeats "I died." over and over again.
• Those Two Guys: He's often seen around with Yuugo since their unimpressive, non-combative gifts make them the two weakest male classmates.
• Youthful Freckles: He sports some across his face to denote being one of the shortest and youngest-looking classmates.

Kiyoko Takekura

Class: Gunslinger

A bespectacled studious-looking girl who is packing more heat than imaginable.

That's because her gift [Gunslinger] summons an endless supply of guns and ammunition at her disposal with the bonus of special abilities added to them.

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• Nuke 'em: Her final solution against Ayaka is conjuring up a nuclear bioweapon with her gift and blowing the battlefield to kingdom come. Alas, Ayaka manages to survive (albeit barely) while the entire surrounding is razed and burnt to a crisp, Kiyoko included.
• Taking You with Me: Having no other option of defeating Ayaka, she exhausted her gift and lifespan to create a nuclear bomb to incinerate everything and everyone that isn't Yogiri and those with him at the time. Unfortunately, Ayaka survives the blast which makes Kiyoko's Suicide Attack for nothing.

Yui Ootani

Class: Cheerleader

Pertaining to her hobby, [Cheerleader] offers the empowerment of others by cheering on her teammates.

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• Eaten Alive: She was consumed and dissolved by one of Mana's Blob Monsters as material to reincarnate her brother.
• Informed Ability: As everyone is powerful enough through either their own strength or Akino's oath, nobody needs Yui to cheer them on so her gift is rendered redundant and therefore unused. Since it's also a solely support-based ability, Yui is helpless against the Blob Monsters as it swallows her whole.
• Pom-Pom Girl: Not only Yui is dressed as a cheerleader but also has the peppy personality and team spirit to go along with it. Her gift of being a Status Buff Support Party Member contributes to the theme.

Asuha Kouriyama

Voiced by: Chiyo Tomaru

Class: Beauty Coordinator

The charming skills of [Beauty Coordinator] either increase or decrease the attractiveness of a target, enabling the use of aggro control.

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• Ludicrous Gibs: Asuha is blown to pieces after Sora orders her followers to surround her and then explode.

Runa Harufuji

Class: Dressmaker

An unseen classmate who is extremely skilled in sewing and clothes-making.

[Dressmaker] reflects and boosts this talent by designing and creating any type of clothing possible.

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• Eaten Alive: She was consumed and dissolved by one of Mana's Blob Monsters as material to reincarnate her brother.

Mei Hanamiya

Powers: Invulnerability, Teleportation and Light Disintegration (Formerly)

Class: Saintess (Fake), None (Actual)

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• Asshole Victim: Mei is arguably worse than any of her classmates as she doesn't possess the Sages' gift meaning all the killings she's done are of her own accord. She's last seen still trapped in the Underworld and possibly have been eaten by Mana's monsters if the nuclear explosion hadn't gotten her first.
• Brought Down to Normal: Mei acquired her powers through a pair of cat gods so Yogiri severed her connection by killing the felines. As she never had gotten a gift from the Battle Song System, Mei is nothing but an ordinary, vulnerable high school girl again caught in the middle of a death game and rightfully ran away fearing for her life.
• Cheated Death, Died Anyway: Her Accidental Murder was reversed by the felines who caused it, only for her to panic and run straight into the Blob Monsters in the middle of the death game once Yogiri completely disables her power.
• Expy: Mei is revived by a pair of magical cat gods, one black-haired male and one white-haired female, at odds with each other who are heavily reminiscent of a gender-inverted Luna and Artemis.
• Good Powers, Bad People: Mei's main power is to purify monsters into a shower of bright sparkles but Mei the ever-psychotic Fake Cutie she is doesn't think twice before using it on humans which proves to be an excruciatingly painful process.
• Laser-Guided Karma: She sadistically enjoys "the despair when overconfident people meet someone more powerful" like herself before effortlessly eliminating two of her classmates. Only to shortly encounter and completely underestimate Yogiri who proceeded to kill her power source and experience the same despair as her victims.
• Light Is Not Good: Mei has hair as white as snow and wears an all-white saintess outfit but a black heart that cannot be excused with the Song Battle System as she obliterates her victims into a sparkly shower of pure light.
• Red Eyes, Take Warning: When the black cat god lends his full strength to Mei, her eyes glow a bright red ready to decimate anything in its path. But just as suddenly, the red glints switched off as Yogiri severed Mei's connection to the cat by killing him.
• Power Misidentification: The class had assumed her [Saintess] powers came from the Battle Song System like everyone else but it's actually from her connections with the cat deities days before the bus trip and are way more diverse than just purifying monsters when it also works on humans as well as Teleportation and Invulnerability.
• Uncertain Doom: Unlike almost every encounter Yogiri had when facing an enemy, he did not instantly kill her but instead the two cat gods that provided the external source of her powers. Mei, now powerless and scared shitless, ran screaming into the monster-infested forest where she would most certainly be consumed by Mana's Blob Monsters if the nuclear explosion hadn't incinerated her first.

Osamu Arima and Mashiro Abukawa

Voiced by: Fumiyoshi Shioya (Arima)

Class: Carpenter (Arima) and Transporter (Abukawa)

A pair of classmates working together and combining their gifts to survive the death game.

[Carpenter] can create and manage constructions of anything while [Transporter] connects doors to different locations.

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• A Death in the Limelight: The two were only in a few brief scenes so it's easy to mistakenly think they popped out of nowhere for the death game where they are finally formally introduced... to be Cannon Fodder for Mei.
• Combination Attack: Their gifts work very well in tandem with Arima's [Carpenter] creating reinforced doors able to withstand lava or a heft-ton concrete block that Abukawa can place anywhere as traps using [Transporter].
• Four Eyes, Zero Soul: Thanks to the Battle Song System making everyone aggressive, the bespectacled Arima crushes Mei to death without remorse. Too bad for him that Mei can teleport and share the same remorseless as him.
• We Hardly Knew Ye: While the duo has been there since the beginning, it was only until the penultimate episode of season 1 that we get their names and gifts. Alas, their focus episode just so happens to be in the middle of a death game which means that's all we know from them before being obliterated by Mei shortly thereafter.

Akinobu Marufuji

Class: Creator

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Rei Kushima

Class: Femme Fatale

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Shigeto Mitadera

Class: Master Oracle

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Sages and Subordinates

Sages

General

• Asshole Victim: It is no secret that a lot of people want to see the Sages dead. So expect to hear massive cheers from the masses when one of them actually kicks the bucket.
• Asskicking Leads to Leadership: The primary basis for being recruited as a Sage is simply being strong enough. Qualification to rule over people, mental stability and basic maturity are not necessary. Furthermore, if someone qualifies to become a Sage and is invited but refuses to join, that person will most likely be assassinated.
• Beware the Superman: The most chronic examples of this in the series. They're the most powerful people in the world and despite their purpose as its protectors, they couldn't care less about those under their protection. Collateral damage, whether accidental or on purpose, is no concern to them as long as they complete their assignments however is most convenient.
• Evil Hero: Their job is to govern and protect the world from threats, mainly Aggressors that invade from other worlds, but the vast majority of them are extremely callous about it and treat the people under their protection like dirt.
• Ominous Floating Castle: Sion (along with Yoichi) and Lain is shown to live in those, although for the latter it's more like a mansion.
• Karma Houdini Warranty: The only reason why the Sages are around, other than them being the world's only protection, is due to the obvious fact that normal people are unable to stand up against them. Then in a moment of hubris, Sion accidentally summons a being way above them who knocks them off their pedestal and kills or permanently cripples them.

Sion

Voiced by: Yui Horie

Powers: Infinite Levelling

The Sage who summoned Yogiri's class to the other world and the primary antagonist from volumes 1-4.

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• Adaptational Dye-Job: Has blue eyes in the colored illustration of the light novel, has green eyes in the anime and the colored illustration of the manga.
• Adaptational Nice Guy: Downplayed. Both the manga and anime adaptation downplays her sinister undertones as narrated in the light novel without changing the fact that she's a Sage who is casual about killing on a whim's notice.
• Affably Evil: She would be a Nice Girl if not for her casually killing and telling off those who are annoying, unworthy, and weak. After apparently getting rid of Yogiri, she made the candidates kill each other, battle royale style, due to thinking that the Underworld dungeon crawling is too easy.
• An Arm and a Leg: During Yogiri's Cold-Blooded Torture, she loses all feeling to both her ankles, right shin right ring finger and both pinkies. After the world reset at the end of Book 11, Sion survives but is said to have been moving her dead body parts with magic.
• Break the Cutie: Also Break the Haughty. Sion believed that she was invincible and happily did whatever she wanted without consequences. However, that was no longer the case when she accidentally summoned Yogiri. Despite multiple warnings shown to herself, she, at the end, hoped to caught Yogiri off guard with the same cheerful demeanor and complete refusal on sending him and his class back home, only to be mercilessly tortured by the boy who not only destroyed many of her body parts but nearly killed her assistant and implied lover. After the Reset Button at the end of Book 11 happens, Sion's intention is considerably more straightforward and she became hesitant to grant the would-be Sage candidates the Battle Song. Her only wish at the time is for Yogiri and the surviving Sage candidates to defeat The Great Sage and UEG so that through re-collecting the Philosopher Stones, Yogiri and the surviving Sage candidates can return home.
• Cold-Blooded Torture: Sion suffers this at Yogiri's hands who destroys her bodily functions bit by bit. After she attempts to escape, her assistant and implied lover is also targeted as well.
• Corrupted Character Copy: Of Saren Sasaki. Both voiced by the same voice actress, are the respective Team Mom, have the look of a beautiful blonde with a girly dress, ribbon-adorned hair, penchant for a cup of tea and cheerful, carefree, and caring in behavior. Except that Saren wouldn't kill or casually tell off who she perceives as annoying or a weakling. Neither Saren would made an entire class killing each other.
• Deconstructed Character Archetype: Has the mentality of a gamemaster/mentor character of an RPG/high-level MMO player character who treats the universe she's in like it's a sandbox RPG video game and/or somebody with too much excitement over Videogame Cruelty Potential in vein of Usada Pekora, complete with the horrifying reaction of others encountering such person.
• Didn't Think This Through: While Hanakawa (which is implied to be summoned by another being instead of Sion) can be send back home, Sion is unable to send the class back home despite her seemingly absurdly large power level. She did gave Yogiri the coordinate of his home dimension along with the "Philosopher's Stone" that became one of her source of power.
• The Dreaded: For the Sage candidates. Doubly so after she told the candidates to kill each other, battle royale style.
• Dissonant Serenity: Has the personality of an elegant, friendly, happy-go-lucky Nice Girl... except that she's casual about killing on a whim's notice and gladly said that those who are unworthy will have their souls farmed for its magical energy.
• Dying Moment of Awesome: When Sion was about to be killed by Mana, she smiles one last time and tells her to remember Yogiri Takatou's name, the one who will kill them. This led to Mana to hunt him down and get killed in the process.
• Fatal Flaw: Pride. Sion doesn't hide the fact from everyone that she has an ego which unfortunately for her, lands her into loads of trouble with Yogiri. Even after she is systematically losing her bodily functions, she refuses to relent until her assistant and implied boyfriend, Youichi is targeted next that she finally relents.
• Foreshadowing: Lute changed the heat ray blast that Sion intended to dispose Hanakawa into a whipped cream, saving Hanakawa's life, only for Sion to brush it out as a joke. Lute's master, Mana, would effortlessly swallow Sion later on before gloating to Sion one last time.
• It Amused Me: Revealed to be her reason for spiriting away a bus full of students to another world to "uplift" them to be Sage Candidates. Also pretty much most of her train of thought.
• Kick the Dog: Shortly after summoning the sage candidates, Sion blasts the head off a teacher for interrupting her and then vaporizes the bus driver because nobody laughed at her joke.
• Laser-Guided Karma: Sion had killed innocents for extremely petty reasons and made the remaining classmates kill each other for her amusement (despite, at least in the light novel, her assistant warns her that it is unnecessary)... That is until she was on the receiving end of Yogiri's wrath who not only enacted Cold-Blooded Torture on Sion but also her completely innocent assistant and implied lover Yoichi all because of her refusal (and apparent inability) to bring him and the class back home. Shortly thereafter, Sion gets assimilated into Mana as material in an attempt to resurrect the latter's brother just like the former, earlier on, wrote off weak sage candidates or those who didn't have Battle Song installed to have their souls harvested for magical energy. Sion does get better after the time loop and she could support her and Yoichi's body with magic to live their daily lives unimpeded despite their dead body parts, but she became more cautious about the state of the world afterwards and only wishes to send Yogiri and friends back home.
• Meaningful Name: "Shion" is the Japanese name of aster tataricus flower. Fittingly, her outfit tends to have a lot of purple coloring and she is one of the most powerful non-deity characters in the universe. She later also revealed to be a Japanese college graduate being isekai'ed herself.
• Nice Job Fixing It, Villain:
  • Subverted and Played for Laughs. When Sion summons an Institute researcher to learn more about Yogiri, he rejoices upon finding that Yogiri was sent to another world and praises Sion for saving the Earth... until he realizes that now this world is exposed to the crisis and Yogiri is just going to tear it apart until he finds a way back to Earth anyway.
  • Eventually played straight as in the end Yogiri got rid of evil gods and bringing back benevolent ones, one of them being Kouryu, being able to help him and his classmates back to their universe.
• Perpetual Smiler: Complimenting her unusually cheerful demeanor, she's almost any time shown smiling and cheerful... Until bad things happened to her directly.
• The Pollyanna: Post-Reset Button, she said that she's able to "live their daily lives unimpeded" by having her and Yoichi's dead body parts supported by magic. She seems to have not upset about it anymore, though probably out of fear towards Yogiri. In her last appearance after the Great Sage Mitsuki is no more, she kept her gentle smile while promising herself to Kouryu about not trying to summoning beings from other universes anymore in fear of bringing back someone with unimaginable powers like Yogiri again and later cheerfully brings Yoichi along for a vacation.
• Psychopathic Womanchild: See Deconstructed Character Archetype above.
• Unwitting Instigator of Doom: None of the events of the series would have occurred had Sion not summoned Yogiri's class to her world, mainly Yogiri.
• Wrong Genre Savvy: While she acknowledged the existence of instant death spells and in fact, gifting one of her candidates with one such spell, she didn't acknowledge that Yogiri doesn't bound with the magic and power levels of the world.

Lain Tendou

Voiced by: Rina Sato

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• Death Seeker: Downplayed since she doesn't actively want to die, but she was interested in Yogiri specifically because he might be able to kill her.
• Killed Off for Real: She is one of two Sages to be permanently dead (The other being Santarou) as she made a direct attempt at Yogiri's life.
• Self-Duplication: Lain can freely make disposable copies of herself that are just as strong as her.
• Stripperific: Lain's attire really exposes a lot of skin, especially on the chest and midriff.
• Who Wants to Live Forever?: She's grown bored of life due to her immortality and finds it distressing to think of how long she might live with no one able to threaten her.

Santarou

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• Hair-Trigger Temper: Bystanders being noisy while he's in the middle of a destructive fight is enough provocation for him to slaughter them all. He got even angrier when Yogiri and Tomochika dodged his attack.
• Killed Off for Real: He's the first of two Sages to permanently die for the crime of threatening and insulting Yogiri.
• Kneel Before Zod: Santarou demands Yogiri and Tomochika must bow down and praise their savior even though he's causing way more deaths and devastation than the supposed aggressor robot he's fighting against as well as delaying their train ride. This is enough to seal his fate as Yogiri deems him too much of an "eyesore" to deal with and kills the so-called superior sage right then and there.
• We Hardly Knew Ye: He has the least screentime out of all the Sages because he spent it antagonising Yogiri for no good reason. As a result, he is one of the two Sages to never come back after the world reset.

Aoi Hayanose

Voiced by: Mitsuho Kambe

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• Blank White Void: Where Aoi spends the rest of her days in solitude, curled up in a ball and refusing to budge. It also happens to be what she saw Yogiri's true form as and had recreated it in a subconscious attempt to prepare herself for The End of the World as We Know It.
• Curtains Match the Window: Her hair and eyes are the same blue as her cold-blooded heart.
• Despair Event Horizon: She suffers this after her encounter with Yogiri, refusing to fight him after discovering his immense power level and becoming pessimistic in fear to the point of hiding herself in her own Pocket Dimension.
• Empathic Weapon: Her dagger talks and expresses feelings like disgust at getting dirtied with blood and worry about Aoi's mental state after encountering Yogiri.
• Hunter of His Own Kind: Aoi's role is to track down and kill rogue Sages and Sage Candidates.
• I Reject Your Reality: Aoi will readily deny the logic of something she's looking at, like a dragon flying despite its size and weight. This is how her ability works, altering reality to fit what she considers reasonable.
• Screw This, I'm Outta Here: Does this after reading Yogiri’s power level, frightening her to the point of running away in absolute terror.
• Troubled Fetal Position: After her encounter with Yogiri, she runs away and locks herself in a Pocket Dimension in a knowingly vain attempt to hide from him. Sion finds her in this position days later, where she adamantly refuses to go back outside for fear of facing Yogiri again and is certain that The End of the World as We Know It is imminent.
• Villainous Breakdown: Upon getting insight into Yogiri's true nature, Aoi drops into sheer terror and quickly flees with her tail between her legs. Later afterwards, she hid herself in a Blank White Void within a Pocket Dimension, refusing to leave as she was too afraid to even face Yogiri. She has never recovered since then.

Subordinates

Yoichi

Voiced by: Hiroshi Watanabe

Sion's personal assistant.

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• An Arm and a Leg: By way of Yogiri's Revenge by Proxy which is doubly tragic because he's completely innocent. He does get better after the world reset with Sion's magic supporting his permanently dead limbs.
• Flat Character: Basically Sion's living notification reminder.
• Morality Pet: For Sion.
• Non-Action Guy: Despite his swordsman like appearance, he didn't wield any weapon and didn't fight at all.
• Properly Paranoid: He was the first one to caution Sion to beware of the mysterious, unranked instant death ability, only for Sion to brush it off as nothing to worry about.
• Revenge by Proxy: It's only when Yogiri goes after his body parts does Sion finally relents.
• Ship Tease: The anime opening indicates this for his relationship with Sion, and at the beginning of his first appearance, Sion said "We're alone, you don't need to talk (formally) like that" though all of Sion and Yoichi's relation that is shown (apart from the anime opening) has been no more than platonic.

Masayuki

Voiced by: Shōhei Komatsu

One of Lain's subordinates.

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• Hybrid Monster: Masayuki can transform into this by giving his zombified self werewolf features and bat wings. However, this is all we ever see as Yogori kills him mid-transformation before he reveals any more potential creatures.
• Irony: Masayuki names his undead army the "Immortal Corps", only for Yogiri to make them fully mortal and dead with his instant death ability.
• Transformation Is a Free Action: Hilariously subverted. Infuriated over his undead Immortal Corps army dying on him, Masayukyi morphs into his One-Winged Angel form, first becoming a zombie werewolf, then gaining huge bat wings... At which point Yogiri took the opportunity to One-Hit Kill him midway through much to Tomochika's chagrin as letting him finish is just common courtesy.

Ryouta Takahashi

Voiced by: Youhei Matsuoka

Class: Mayor

One of Lain's subordinates

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• Know When to Fold 'Em: Upon witnessing Yogiri effortlessly and illogically kill Masayuki's already undead Immortal Corps followed by Masayuki himself in only a single word, Takahashi immediately surrenders and declares he was forced into Masayaki's scheme without any violation of his own. In turn, Yogiri spares him since Takahashi is telling the truth and has actually backed down without the former warning him.

Denizens

Risley

Voiced by: Rina Sato

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• Reincarnation: She is this to Lain, having all of her memories of her past life intentionally removed to ensure she'd be safe from Yogiri's powers.

Mireille

Voiced by: Yū Sasahara

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• Bitch in Sheep's Clothing: She poses as a friendly native willing to guide Yogiri and Tomochika during their first time in the other world, before ambushing them with a group of thugs and attempting to sell both of them.
• I Have a Family: She uses this in an attempt to get Yogiri to spare her. He counters that having a family to feed doesn't justify human trafficking.

Euphemia

Voiced by: Kiyono Yasuno

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• Hope Spot: Moments after being freed from forced servitude, she's once more enslaved after Lain sired her to be a vampire.
• Ignored Expert: Euphemia gave sound advice to her masters to not antagonize Yogiri but the arrogant fools chose not to listen which led to predictable results.
• Screw This, I'm Outta Here: Having been freed from Yuuki Tachibana's Mind Control following his death, Euphemia leaves his carcass and her other surviving teammate behind to reunite with her tribe.
• So Beautiful, It's a Curse: It was because of her beauty that Yuuki Tachibana chose to enslave her.
• Take Up My Sword: Following Lain's death, Euphemia inherited her powers, turning her into the new Origin Blood.
• Throw the Dog a Bone: Euphemia is able to reunite with her older sister.

Theodisia

Voiced by: Akira Sekine

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• Big Sister Instinct: She battles the Sword Saint and his followers to reunite with Euphemia.
• Revenge: Upon discovering the atrocities caused upon her tribe, Theodisia targets the Sword Saint and kills him as retribution.
• Sex for Services: Theodisia is more than ready to offer her body to Yogiri to gain his help.

Rick (Richard)

Voiced by: Mark Ishii

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• Anti-Villain: Following the world reset, Rick tries to end Yogiri's life after he learns the latter's true nature.
• Did You Just Punch Out Cthulhu?: He managed to kill Vahanato while she was in a crazed and vulnerable state.
• Only Known by Their Nickname: He prefers to go by Rick rather than his full name Richard even though it holds more weight of being the third prince.
• Only Sane Man: He's one of the extremely few genuinely good people in the other world, even going out of his way to protect seemingly weak people like Yogiri and Tomochika. He's also the only one in the Sword Saint trials who didn't want to go around killing the other participants.

David

Voiced by: Takuya Nakashima

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• The Drag-Along: Having been incapacitated by Sion's magic, Hanakawa had to carry David's unconscious body the whole time during the battle royale and Mana's awakening.
• Groin Attack: He immediately regrets challenging Tomochika to a sparing match as she delivers the Dannoura-style specialty of kicking him square in the balls. At least it's not the alternative of Yogiri insta-killing him.

Lynel

Voiced by: Shou Nogami

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• Born Unlucky: Even before Vahanato reincarnated him in the other world.
• Death Is a Slap on the Wrist: Like his inspiration as detailed below, it's just as painful, so it's subverted.
• Expy: An extremely unlucky dude that dies a lot, being reincarnated by a female superpowered being... quite a dead ringer to Natsuki Subaru. Downplayed however that while both Lynel and Subaru is quite nice, Lynel is a full No-Respect Guy while Subaru gradually acquired the respect of his peers.
• Gacha Games: By way of RPG Mechanics 'Verse. The "apology stones", apart from providing his return-by-death powers, allow him to summon strong items and beings... which turns on him because of his sheer bad luck.
• No-Respect Guy: His fellow party members despise him due to his apparent weakness.
• Play Every Day: The apology stones replenish every day should he ran out.
• Throw the Dog a Bone: After the world reset, Vahanato used him once again... only to gift him an abundance of apology stones before leaving the dimension.
• Unwitting Pawn: The poor guy had been used by Vahanato who hoped to weaponize his bad luck to free her Demon Lord husband and eliminate her husband's jailers. Unbeknownst to both of them, Lynel had nothing to do with the deaths and Albagarma had already been killed by the same being that killed the jailers.

Frederica

Voiced by: Shiori Izawa

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• An Arm and a Leg: Her right arm gets turned into gingerbread and broken off by Lute who cloyingly said girls should like sweets before taking a bite out of it. Frederica is rightfully in excruciating pain.

Urabe (Sword Saint)

Voiced by: Tetsurou Miyata

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• Necessarily Evil: He commanded those taking his trial to kill each other at the start because he felt there were too many, and he kept dozens of half-demons as livestock for harvesting magic. However, all of it is for the sake of keeping Albagarma's seal up and making sure he doesn't wipe out everyone in the world.

Holy Queen/Divine King

Voiced by: Sayaka Kikuchi

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• Hair of Gold, Heart of Gold: The Divine King is a blonde haired woman who protects her world from evil forces, even allowing herself to be sealed alongside the Devil King. Downplayed later as she then targets Yogiri and tries to kill him out of fear the teen would be the end to all life on her world.
• Sealed Good in a Can: She kept herself sealed alongside Albagarma in a bubble of frozen time for a thousand years.

Aggressors

Giant Robot

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• A Form You Are Comfortable With: It adopts a high-pitched female voice when bargaining with Yogiri in order to be more appealing.
• Humongous Mecha: Exactly What It Says on the Tin.

Kurayami

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• Attack of the 50-Foot Whatever: Kurayami stands at a similar height to the buildings in Hanabusa.
• Humanoid Abomination: It's a giant shadow creature with a vaguely humanoid shape that presumably crosses dimensions and kills anything it touches.
• Touch of Death: Anything it touches dies right away.

Hedgehog

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• Kill the God: It's on a single-minded mission to hunt down and kill a specific god, and nearly killed Vahanato before realizing she wasn't the one.

Earth

Independent Higher-Order Organism Research Institute

An organization dedicated to studying supernatural phenomena and learning to control it for the betterment of humanity.

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• Benevolent Conspiracy: They claim that their operations are for the benefit of the world, though this is pretty questionable. For example, they originally intended to use Yogiri as a Human Weapon for Japan rather than simply ensuring he didn't kill anyone. It's only once Yogiri proved uncontrollable that they turned to just keeping the world safe from him.
• Big Brother Is Watching: They keep tabs on Yogiri's movements 24/7 via tracking devices as well as if any of his seals are unlocked.
• Game Changer: The Reveal of their existence, and simultaneously of Yogiri's backstory, massively alters the course of the series from your typical isekai story with a busted protagonist to something a lot more sinister.
• "It" Is Dehumanizing: They (except Asaka) always refer to Yogiri as such and generally treat him like a monster or a force of nature rather than a human child.
• N.G.O. Superpower: As the name suggests, they're an independent research institute that uses super-advanced technology and has possession of things equivalent to or greater than nuclear weapons. While they aren't directly connected to the government, they are in support of Japan since that's where they're stationed.
• These Are Things Man Was Not Meant to Know: Almost any personnel that makes contact with Yogiri is immediately considered compromised.
• Why Am I Ticking?: An employee that Sion summoned was automatically detonated because he was in the same universe as Yogiri while his first seal was released.
• Would Hurt a Child: They presumably have tried to control Yogiri using force, who was still just a child despite the nature of his origin.

Asaka Takatou

Voiced by: Lynn

An employee of the Institute in charge of being Yogiri's caretaker and raising him to be a functioning Japanese citizen.

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• Audience Surrogate: In the Flashback side stories, she's the one commenting on all the oddities surrounding her.
• The Conscience: She instilled some human morality into Yogiri while raising him, such as to avoid killing unless someone tries to do the same to him or someone he cares about, and not to kill people just for inconveniencing him. Yogiri sometimes explains his decisions with what Asaka told him is and isn't okay.
• Flashback: Asaka appears exclusively in Yogiri's childhood memories while asleep since she's back on Earth. Her only physical appearance in the present is when Yogiri finally returns home in the series finale and she welcomes him back.
• Good Parents: Asaka is the best parental figure Yogiri could ever have as she was the first person to know his true nature and still treat him like a human being rather than the endbringer of humanity. In addition to giving him unconditional motherly love, she teaches Yogiri morality, common sense and most importantly restraint in using his ability which he takes to heart and shapes the way he is today. It's suffice to say Yogiri has nothing but good memories of her and places Asaka as the top priority on his protection list.
• Morality Pet: Asaka realizes she has become this to Yogiri and stays with him in hopes she can steer him into a better path. The Lab comes to the same realization as Asaka and employs bodyguards to protect her lest Yogiri goes on a rampage.
• Parental Substitute: Asaka becomes a surrogate mother to Yogiri and does her absolute hardest in raising him.
• Parents in Distress: Yogiri went on a Roaring Rampage of Rescue when she was kidnapped by another organization trying to get information on him.
• Retail Therapy: After her first month struggling to care and "cook" for herself and Yogiri, Asaka immediately engages in this upon being told of her hefty salary and vacation days where she proceeded to go on an unrestraint shopping spree involving a huge makeover, eating an expensive steak dinner and staying in a luxury suite.

Enju Sumeragi

A little girl from one of the most powerful families in the world who decided to go on vacation to the most isolated place on Earth: the Institute facility where Yogiri lives. In reality, she was an Adjudicator (superpowered human) participating in the Judge's trial to decide the fate of humanity.

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• All the Other Reindeer: Because of her Touch of Death, other children made it a point to avoid her. The only exception is Yogiri, who could relate due to having a similar quality.
• Brought Down to Normal: Enju is born with an instant death touch similar to Yogiri due to the Judge creating her as part of his trial. Once Yogiri ends The Judge's life and therefore the trial, Enju has her powers ridden for good and gets to live happily as an ordinary girl.
• Childhood Friend: Of Yogiri, and seemingly his only friend from his time on Earth other than Asaka.
• Happily Adopted: Following the whole ordeal with the angels, Enju got adopted into the Takatou family and is living a comfortable and happy life.
• Touch of Death: Any mortal being she touches with bare skin dies instantly which causes her to wear gloves and clothes covering most of her skin. This was until Yogiri killed the Judge and forcibly ended the trial, thus removing her powers.

Yukio Shiraishi

Voiced by: Kento Shiraishi

A chief researcher at the Institute in charge of overseeing operations involving Yogiri.

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• Anti-Hero: He tried to stop Yogiri from leaving to go save Asaka and even ordered a guard to shoot a researcher who was opening the doors for him although this is because Yogiri was still considered a massive threat to humanity that mustn't be allowed to roam freely at all costs.
• Break the Scientist: Yukio's and the Institute's initial assumption of Yogiri's ability is that he could instantly kill anyone he's made eye contact with. This is thoroughly disproven during his escape to rescue Asaka when he kills numerous people who had never been in the same room as him and that he's never seen, terrifying everyone who witnesses the massacre and even causing Yukio to sweat. Eventually he folds and is forced to accept that Yogiri is simply unstoppable.
• Conditioned to Accept Horror: He's a lot more collected than other researchers around Yogiri and hardly bats an eye when his coworkers are dropping dead around him. Presumably, he's just gotten used to it given the nature of his job.
• Dissonant Laughter: He acts fairly casual and lighthearted when discussing job conditions with Asaka, including the grittier bits.
• Know When to Fold 'Em: He gave up trying to hinder Yogiri once it became clear that he was only ever "contained" because he never felt a need to leave.

The Judge

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• For the Evulz: He didn't really care how the trial turned out and was probably going to destroy humanity anyway. He just likes forcing people into terrible situations.
• Karmic Death: The Judge appears out of the blue to force Enju and her bodyguards into a death game For the Evulz and decides to exterminate all life on Earth anyway after finding humanity an eyesore. Only for Yogiri to show up and kill him and his army on the spot with the same nonchalance and mercilessness upon determining that he is the eyesore.
• Kill All Humans: He decided that humanity is "unnecessary" and deserves to be wiped out for no particular reason.
• Our Angels Are Different: He and his cohorts have the appearance of Winged Humanoid angels and claim to be disciples of The Maker of humanity.
• Would Hurt a Child: Enju and Yogiri and the rest of the children on Earth are included in his extermination of humanity but The Judge could not care less.

Gods

General

• Even More Omnipotent: All gods are considered "omnipotent", but they can still be vastly stronger or weaker than one another.
• God in Human Form: While their true essence is metaphysical, they usually interact with mortals and each other using humanoid forms.
• Jerkass Gods: Most of the gods that appear in the story are either evil or indifferent, taking the same pleasure in slaughtering mortals that a child does in torturing ants.

Vahanato

Voiced by: Rena Maeda

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• Affably Evil: Cheerful, if a bit troll-ish, kind, and having loyal followers, with her acting motherly towards them. However like her husband Albagarma, she resents humanity and plans to destroy it, though not showing it openly.
• Gold and White Are Divine: Yes, she's a Goddess with the appropriate color scheme. But no, she isn't "good".
• Heel–Face Turn: Not to the point of being good, but only to the point of being neutral. After the world reset, she once again accompany Lynel on her personal revenge against the Sword Saint and his followers, and then leave the universe afterwards with no plans to destroy humanity anymore and no grudge anymore either, especially knowing what Yogiri is.
• Hot God: Hot Goddess. So much so.
• Laser-Guided Karma: She backstabs Lynel and discards him the moment she thinks her evil plans are succeeding. When they didn't however, she literally gets stabbed in the back by Hedgehog who then discards her for not being their target.
• Light Is Not Good: Despite her looks, her husband is a Satanic Archetype and she shares the same end goal as him of destroying humanity.
• Shameless Fanservice Girl: See Stripperific below.
• Stripperific: Her outfit is only a gold strapless bikini, a cloak that only reaches the waist area, and several pieces of jewelry.
• Villainous Breakdown: Upon learning her husband is dead, Vahanato breaks down into maniacal laughter and lashes out at everything in sight... except Yogiri because she already knew what kind of a thing Yogiri is.

Albagarma

Voiced by: N/A

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• Adaptation Distillation: Apart from Dead All Along, Humanoid Abomination, and Sealed Evil in a Can, the anime version lacks all the tropes mentioned below due to his backstory being cut.
• Dead All Along: Yogiri even doesn't know that he killed Albagarma, just because Albagarma's evil aura can be felt from a considerable range.
• Deal with the Devil: He used to wander the world granting people's prayers in exchange for sacrifices of flesh.
• Humanoid Abomination: Even when sealed, his evil aura can still be felt through a considerable range. To his disadvantage, this is what allowed Yogiri to kill him out of the uneasiness he brought.
• Satanic Archetype: He's a demon god that indiscriminately granted people's deepest desires, good or evil, as long as they could pay the price in blood. That price could get very expensive, and the world's inhabitants became so reliant on him that they ended up cutting their population in half by sacrificing each other. If that wasn't enough, he is literally called "the Devil".
• Sealed Evil in a Can: He was kept sealed by the Holy Queen in a bubble of frozen time for a thousand years.

Mana

Voiced by: Eri Yukimura

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• Always a Bigger Fish: A genuine threat that far surpasses a Sage... but not Yogiri.
• Blob Monster: See below.
• Eldritch Abomination: Her alternate form is a Blob Monster capable of absorbing any and all biomass, preferably human.

Malnarilna / Malna-Rilna

A twin goddess, taking form of twin little girls.

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• Psychopathic Womanchild: Basically Sion taken several times worse, and made double.

Kouryu

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• Big Good: He's the one with enough power to send Yogiri and his classmates back home and takes over the Sage's "duty" to fight Aggressors.
• Dragons Are Divine: Has the alternate form of an Eastern/Chinese dragon.
• Face of a Thug: Downplayed. He's often has a smug appearance with an aloof attitude, but he's as cute as most of the cast and ultimately he's a nice person.

Others

Heavenly Record Eaters

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• Adapted Out: Even though he was prominently shown in the intro, the Heavenly Record Eater was completely skipped over in the anime proper as the main trio had gone straight to David without any obstruction which was supposed to be him and his army.
• Animalistic Abomination: They're a species of interdimensional anglerfish that feed on universes.
• Blood Knight: One of them found that violence is amazingly stimulating and sought it out as much as possible using its avatar, which eventually became a warlord.
• God in Human Form: Some HREs that gain intelligence decide to self-insert into worlds with mortal avatars.
• Horrifying the Horror: The one that thought about attacking Yogiri started to panic when it realized that it was going to die in ten seconds, and there was nothing it could do about it. It had no idea why or what death even is, just that it couldn't see anything beyond ten seconds into the future and even reversing time to before the ten seconds began did nothing to delay it.
• Reality Warper: The ones with intelligence can freely manipulate worlds for whatever purpose they want.
• Spacetime Eater / Abstract Eater: HREs feed on everything that makes up a world, including its physical and conceptual structure.

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