Characters / Future Diary: Diary Holders

Future Diary Main Character Index
Diary Holders (Yuno Gasai) | Supporting Characters | Another World

WARNING: Unmarked Spoilers ahead!

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They are the 12 chosen participants^note 13 individuals, with the seventh diary holders counting as one of the survival game held by Deus Ex Machina, the god of time and space. Each of them is given a diary that is closely tied to their personality or job. Using their diaries, they are to find and eliminate each other until only one of them is left. The last man standing wins the position of god, as Deus' successor.

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Tropes Common To Diary Holders

Tropes common to all the diary holders

• Achilles' Heel: Their diaries are inextricably linked to their futures. If a diary is destroyed, the diary's owner will die.
• Anti-Villain: Most of the Diary Holders aren't bad people at heart, just doing what they have to in order to survive against 12 other individuals out to kill them. Some, even, are fighting for the sake of others more than themselves—Kamado for her orphans, Marco and Ai for each other, and Keigo for his son. In the 3rd world where the game is not being played, everyone is much happier since they can lead normal lives, no killing necessary.
• Ax-Crazy: This pretty much sums up the majority of the cast really, especially Yuno. Even Yuki has a bit later on in the series due to Sanity Slippage.
• Big Bad Ensemble: There's the Big Bad Duumvirate Yuno and Mur Mur and all the other Diary Holders including Yuki himself and the Only Sane People Ai, Marco and Kamado.
• Big Bad Wannabe: All the other Diary Holders who are not Yuno and Mur Mur are in over their heads if they're confident on winning the game.
• Cast Full of Crazy: So God is dying and wants twelve people to fight to the death in order to see who will be his replacement. Who better to choose than possibly the twelve craziest people on planet Earth? Even our hero Yuki isn't immune. After both his parents are murdered, one right in front of him, he snaps and proceeds to turn from a Shrinking Violet into a full-blown, line-crossing Villain Protagonist. It can be argued that only those without Diaries are safe from the madness, but even the mental condition of Nishijima, Akise, and Yukiteru's three "friends" is up for debate.
• Dysfunction Junction: The whole cast is Ax-Crazy, especially Yuno. The main cast is comprised of a serial killer, a terrorist bomber, a prophetess of a self-proclaimed Religion of Evil who was also used as an unwilling sex toy by them in the past, a blind vigilante ruled by his own brand of justice, a Tyke-Bomb who suffers from elitism, a Corrupt Cop, a man who is maniacally in love with his dogs and neglects his family, the local mayor who has Nazi-like views on how to evolve humanity by giving his citizens the power of the Future Diaries, and the lead Yukiteru Amano eventually snaps after certain incidents that force his hand all the while guarded by his Yandere Stalker with a Crush Yuno. The only sane characters are Yuki's friends, two diary owners who have a more stable relationship than Yuki and Yuno, and a careworker who has no interest in winning but her orphans want her to become God to make the world better.
• Earn Your Happy Ending: In the 3rd world, everyone has a happier life as a result of never having had to play the game. Reisuke's parents are alive, Keigo's son is brought in for hospital treatment and recovers, Minene is Happily Married to Nishijima, Kamado becomes an Official Couple with John Bacchus and her orphanage is in no danger of closing, Tsubaki's cult is reformed into a Cult of Justice, Marco and Ai are married with a baby on the way, Tsukishima has a far better relationship with his daughter, and Hirasaka has opened a shop selling his merchandise. But the ultimate happy ending goes to Yuki and Yuno, who both become gods and reunite after 10,000 years, never to be separated again.
• Godhood Seeker: Most of them are participating in the Survival Game to take Deus's place as god.
• Personality Powers: A participant's diary's abilities is dependent on the participant's lifestyle, habits, and even jobs.
  • The First's diary (Random/Indiscriminate) reflects on him being an introverted, reclusive bystander.
  • The Second's diary (Love) reflects her obsessive love towards the First.
  • The Third's diary (Murder) reflects his murderous tendencies.
  • The Fourth's diary (Case/Investigation) reflects his job as the police chief.
  • The Fifth's diary (Hyper Vision) reflects his childish impatience.
  • The Sixth's diary (Clairvoyance) reflects her role as the leader of a cult.
  • The Seventh's diaries (Exchange) reflect their mutual love as a couple.
  • The Eighth's diary (Server) reflects her kind and giving personality.
  • The Ninth's diary (Escape) reflects her survivalist nature. It also reflects her desire to escape from all the hardships she endured since childhood, and to be saved from it.
  • The Tenth's diary (Breeder) reflects his obsession with his dogs.
  • The Eleventh's diary (Watcher) reflects his megalomania as well as his status as the creator of all diaries.
  • The Twelfth's diary (Justice) reflects his justice-seeking outlook.
• Religious and Mythological Theme Naming: The diary holders are all named after members of the Roman Pantheon.
  • Yukiteru's last name contains the kanji for "heaven" and can be read as "heavenly field". It's fitting, considering his first name is a corruption of "Jupiter", the Roman God of Gods. When his full name is roughly translated into Latin it becomes Jupiter Caelus/Jupiter Caelestis, two of Jupiter's known epithets. He ends up winning the game of the 2nd-world among the other potential gods.
  • Seeing as Yukiteru is named for Jupiter, the kanji for Yuno's given name is really "Juno" read as Yuno (in central European languages the letter J is pronounced how Y is pronounced in English), so even more fittingly for Yukiteru, the reading of Yuno's full name is "my wife, Juno". Which is fitting, because Juno — just like her Greek counterpart Hera — gets mad at anyone who stole Jupiter's love, and would chase them down to the ends of the Earth. Then there's the fact that Juno is a war goddess too.
  • The kanji in Third's last name, Hiyama, is read as "volcano". The Roman god in the Dii Consentes that he is associated with? Vulcan.
  • Kurusu's is a bit harder to pin down than the others, but the kanji in his last name "kuru" means "to come" and as Mercury was the messenger to the others gods, he is probably closest to Mercury in the Dii Consentes.
  • Reisuke's last name, Houjou is written as "fertility". He corresponds with Ceres in the Dii Consentes.
  • Tsubaki's name has a nod to the Roman goddess Proserpina, the goddess of springtime. She has the kanji (春) for springtime in her name, and further connecting to Proserpina by both being beautiful women who spend much of their time hidden from the world. She may also be named after the god Apollo, god of the sun and prophecy. Her name contains the kanji for sun and her followers believed her to be clairvoyant.
  • Marco's first name comes from "Mars", the Roman god of war, and his last name's kanji is read as "battlefield", sealing the comparison. Ai's name indirectly references Venus, as her first name means "love" while her last name contains the kanji for "beauty" and "god", all strongly pointing to Venus as a reference. If that wasn't enough, Mars and Venus were also well-known in the myths for their love affair. Their Child Diaries take the comparisons one step further, with Marco's being a diary that predicts his opponent's next fighting move, so he can counter it, and Ai's making predictions about all the men that she wants to flirt with in the future.
  • Kamado can mean "hearth", which is one of the domains that Vesta was goddess over. "Ueshita" sounds like "Vesta" (Ueshita/Weshita/Wesuta). Just as well, Ueshita runs an Orphanage of Love and gives a place for orphans to stay, and Vesta was also the goddess of family and the home.
  • Minene is named for two gods, who are usually paired together in the Dii Consentes. Her first name, Minene, is an obvious corruption of Minerva the goddess of battle strategy. Her last name also contains the kanji for rain 雨 (ame), which corresponds to Neptune who is the god patron of horses for some reason, though in her case her horses are motorbikes.
  • Tsukishima (月島) contains the kanji for moon, and his first name, Karyuudo, is read as "hunter". Goddess of the moon and hunting? That's Diana in the Dii Consentes.
  • John Bacchus' last name in the original Japanese is バックス (pronounced "Bakkusu"), a direct reference to the Roman God of wine and theater Bacchus. The English dub of the anime rewrote his name as "Balks", however. He's also one of the only diary holders whose namesake isn't a god listed in the Dii Consentes, along with Yomotsu Hirasaka. It probably explains why his and Yomotsu's diaries were modified last, making them Eleventh and Twelfth, respectively.
  • Yomotsu Hirasaka is the name of the boundary between Life and Death in Japanese myth, and so he can be associated with the Roman god Pluto.
• Scry vs. Scry: The nature of their survival game is to prevent their own prophesied death while ensuring the fulfillment of the others' deaths. This is by trying to prevent any future prediction related to their own death by not acting according to the predicted future.
• Smug Snake: Most of the Diary Holders are confident in their skills but in the end, they are defeated nonetheless.
• Tactical Rock–Paper–Scissors: Each diary has its own strengths and weaknesses. A big part of a diary holder's strategy is to try and find out the limits of the diary of an opposing diary holder's and use that information to his or her advantage. To elaborate:
  • Yukiteru's Random Diary records events that will happen around him. However, it doesn't predict the events that will happen to him unless it is the cause of his death. Confining him to an enclosed space also limits the things the diary can predict.
  • Yuno's Love Diary predicts the actions of one individual (Yukiteru in this case) and only that person. This means it does not predict any event that will happen to Yuno herself except for her own death.
  • Hiyama's Murder Diary is a powerful weapon for tracking down targets. However, it doesn't tell him what the target will actually do, thus making it useless for defending himself.
  • Kurusu's Case Diary lets him know the movements of suspects in the cases he is involved in, but does not allow him to see the movements of people who are not involved in a case except to warn him of a Dead End.
  • Reisuke's Hyper Vision Diary gives him ample time to plan out his day. However, it only predicts three events a day and doesn't help in predicting the immediate future.
  • Tsubaki's Clairvoyant Diary records the observations of every one of her cult members, giving it an enormous range but making it vulnerable to information overload. It is also large and cumbersome, and extremely fragile.
  • Marco and Ai's Exchange Diaries tell them about the other's future, making them a formidable team. However, this leaves them vulnerable if they're separated.
  • Kamado's Propagation Diary allows her to mass-produce Child Diaries. However, this means she has no diary of her own, meaning that she has to rely on others to fight for her. Also, the Child Diaries require an internet connection to work, making them vulnerable to signal jamming.
  • Minene's Escape Diary helps her avoid death, but has no offensive utility. It also still shows a Dead End if the odds are too stacked against her.
  • Tsukishima's Breeder Diary lets him control an army of attack dogs and see their future, allowing him to hide safely in his mansion. However, the more dogs he controls, the harder it is to keep track of all of them.
  • John Bacchus's Watcher Diary allows him to read the contents of every other Diary, making his the most powerful diary in the game. However, it can't verify the truth of what he reads, meaning that someone can write a fake entry into their diary to mislead him.
  • Yomotsu Hirasaka's Justice Diary warns him about acts of "injustice" which can be useful in a game where the goal is to kill everyone else. It also gives him hypnotic powers. However, it alerts him to all acts of injustice, even stuff as minor as littering.
• You Are Number 6: Their codenames in the Survival Game are ordinal numbers.

Yukiteru Amano - The First

Voiced by: Misuzu Togashi (JP), Jessie James Grelle (EN)

A timid boy who views life as though he were a casual bystander. His "Indiscriminate Diary" records future observations about everything and everyone around him, although it usually doesn't record any information about himself except for his DEAD END. At first, he's unwilling to participate in the Diary game, but Deus still considers him the favorite to win. He has an...interesting relationship with Yuno.

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• Accidental Pervert: When he first meets Hinata, he trips and his hand lands on her pants and pulls them down, revealing her underwear to the class.
• Action Survivor: Being in the Survival Game with all the rest of the diary holders setting their sights on him forces Yuki to fight in order to survive.
• All-Loving Hero: He has his ups and downs throughout the series, but in the final battle, he decides to try to give everyone a happy ending by protecting 3rd-world Yuno from 2nd-world Yuno, not by killing the latter but by changing her mind. At the end, the only person he didn't manage to save was 2nd-world Yuno, who chooses to commit suicide instead of killing him as he wanted.
• All-Powerful Bystander: After becoming god, he does nothing besides mourning Yuno's death for 10,000 years.
• The Aloner: After the end of the Survival Game and the destruction of the 2nd World, Yuki is the only surviving human being left in the void of his destroyed world. His only company is 2nd Mur Mur, but she can't alleviate his loneliness and despair after losing Yuno.
• Armor-Piercing Question: "Yuno! Do you really love me? Or are you just insane?"
• Badass Adorable: Comes with being a timid Action Survivor.
• Badass and Child Duo: Strikes this with Minene, especially during the Final Battle.
• Badass Driver: Becomes this later in the series at the age of 14. Just look his car chase against Eleventh.
• Badass on Paper: Killing Third put him in the running for among Deus's prime choices for potential godhood. It also makes him a prime target for the other diary owners. He's also killed Sixth and Fourth along the way. Not bad for a Cowardly Lion who spends most of his time crying and running scared.
• Badass Pacifist: In the final battle, Yuki is unwilling to kill Yuno, but he won't allow her to harm her 3rd-world self.
• Badass Unintentional: Taking out Hiyama was only an act of self-defense, but by becoming the first diary holder to kill another diary holder, Deus called him the prime candidate to win the Survival Game. This made all the rest of the diary holders set their sights on him.
• Batman Gambit: He seems to attempt one during his battle with Yuno in 3rd world. He continues to run around the school, deliberately putting himself in danger, since he knows Yuno's diary will keep her one step ahead of him. He presumably does this so that her diary will show her that she does truly love him (which she is in denial about at this point), and thus convince her not to kill her 3rd world self and repeat the game with his 3rd world self. However, while her diary entries do make her realize her true feelings, she still decides to repeat the game, creating a Lotus-Eater Machine for him using Deus' sphere instead of trying to kill him. She only gives up on this after he and 2nd-world Mur Mur break out of the sphere, and ultimately decides to kill herself and allow him to become God in the 2nd world.
• Battle Couple: After he becomes more competent in combat and his relationship with Yuno solidifies, he forms this dynamic with her.
• Beware the Nice Ones: Yuki is a nice and shy boy, but can fight back in self-defense and later he starts to go quite crazy.
• Break the Cutie: Happens several times to Yuki. Most notably when he forgives his father for killing his mother, and everyone looks like it is going to be alright until John Balks' hitmen assassinate Yuki's dad.
• Butt-Monkey: Being the love interest to an insane and unpredictable sociopath can break you emotionally. This spineless, insecure and whiny coward even calls himself a pathetic weakling.
• Car Fu: The car chase against 11th, 8th, and Nishijima ends with him ramming them and causing them, along with himself and Yuno, off a cliff.
• Classical Anti-Hero: For all the power that his diary gives him, he is a cowardly, lonely and awkward dork who's very reluctant to act. Though he cares for others and is willing to be brave he feels the need to step up.
• Clueless Chick-Magnet: There have been at least five characters who've either flirted with, kissed, or shown attraction to Yuki throughout the series, and more blatantly, the fact that the School Idol was stalking him for a year and he didn't realize it until after he got his future diary.
• Cowardly Lion: Yuki spends the vast majority of his time crying, screaming, and running from the people determined to kill him, but he can fight back when cornered.
• Cradle of Loneliness: He is so crippled by the loss of Yuno that he just sits there staring at the last entry in his diary "Yuno died" for 10,000 years.
• Cynicism Catalyst: After his father kills his mother in a moment of extreme stress and desperation, Yuki is left devastated. But it's the death of his father at the hands of the Eleventh's henchmen just after he had apologized to him that prompts Yuki to momentarily go berserk, start fighting back, trust Yuno fully, and resolve to become God.
• Death Glare:
  • In Episode 14 he delivers one very angry glare to Yuno after he escapes from the chair to which she had bound him.
  • Another to the Eleventh's men in Episode 18.
• Death Seeker: In the final battle, Yuki asks Yuno to kill him so she can become the god of the 2nd-world. However, Yuno chooses to kill herself instead, as his actions have made her realize how deep her feelings are for him, and she can't bear to kill him. Yuki spends the following 10,000 years mourning the fact of not being able to save her.
• Deity of Human Origin: He starts as a normal schoolboy and becomes god after winning the Survival Game.
• Designated Victim: Considers himself this in early chapters, often being put in situations he does not want to be in. This trope comes and goes over the course of the story.
• Despair Speech: When he realizes that his diary only predicts things that happen around him and not things that happen directly to him, he breaks down and tells Yuno about how lonely he is, having always observed his surroundings and other people without actually interacting with them, which is reflected in his diary.
• Determinator: Shows shades of this later. In the final battle, he declares he will save Yuno no matter what.
• Devoted to You: Yuno literally lives to love Yuki and there is no one that she cares about besides him. Akise is also very devoted to him.
• Dirty Coward: He's still a Cowardly Lion even after his Face–Heel Turn, but now he's gone from the Classical Antihero to embracing his bloodlust.
• Distressed Dude: He usually gets himself in trouble and Yuno has to save him. And there was a time in which his friends had to save him from Yuno herself.
• Doppelgänger Replacement Love Interest: To Yuno. The Yukiteru she originally wanted to marry was his 1st World counterpart. After 1st-world Yukiteru died, Yuno went back in time and decided to use 2nd-world Yukiteru as a replacement. She actually was fine with killing him so she could get together with the 3rd-world Yukiteru, but by the end she developed real feelings for 2nd-world Yukiteru.
• Driven to Villainy: Yuki at first doesn't want to kill anyone, but the events of the Survival Game, especially the death of his parents, screw him over. Yuki then becomes willing to kill the other diary owners and anyone that gets in his way if it means resurrecting his parents, although he admits he does not wish to do so, but is equally afraid to face life without his parents.
• The Dulcinea Effect: Towards Tsubaki, quickly jumping in to save her and escape with her despite having just met her. It's not until she makes it obvious that she's actually a Manipulative Bitch that wants to kill him that he decides to go back to teaming up with Yuno.
• Earn Your Happy Ending: It takes three different universes and waiting thousands of years, but in the end, he gets to be with Yuno forever and ever. And they've both become gods, so not even death will part them.
• The Eeyore: Pretty similar to Shinji Ikari, Yuki is a very insecure and depressed little sad-sack who is scared of getting hurt though it makes sense as his life is constantly on the line with other people attempting to kill him in order to become a god of space and time and he has an unpredictable stalker romantically obsessed with him.
• Even the Guys Want Him: Just like Yuno, Aru Akise is madly in love with him.
• Excessive Mourning: Yuki is so devastated by the death of his beloved Yuno that he doesn't give a crap about his new job as the God of the 2nd World. He just spends 10,000 years floating amongst the ruined remains of the world, staring mournfully at the final entry of his cell phone diary stating that Yuno died.
• Expy: Yuki shares a number of character traits with Shinji Ikari, especially in the beginning. Both are timid and lonely but unable to connect with the people around them even if they really want to, and forced to fight even though they really don't want to. Both seem to want their father back in their lives, but both end up betrayed. They also have very crazy and aggressive love-interests who are a lot tougher than both of the guys. The main difference seems to be that Yuki has his mother and Yuno, the latter being something of a mixed blessing.
• Extreme Doormat: Initially he views himself as a spectator from the sidelines and doesn't do much to fight back. This manifests in the power of his Diary, which sees only the future of the world around him.
• Failure Hero: Yuki is a spineless weakling who's pretty ineffectual and naive in the Survival Game and he relies on Yuno to fight his battles. Most of his goals end up becoming All for Nothing but he's still able to save 3rd-world Yuno.
• Fire-Forged Friends: With Minene. They develop a Like Brother and Sister relationship after going through many fights together.
• Friendless Background: Due to Yuki's introversion, he never had any friends though he becomes so lonely that he starts becoming desperate to have friends and while he does succeed initially, Yuno's possessiveness gets in the way and she manipulates Yuki into turning against just so she can be Yuki's only ally.
• God Couple: With 3rd-world Yuno, who is given 1st-world Yuno's memories and becomes god to save him from spending eternity alone in the void the 2nd-world has become.
• Grew a Spine: Tries to be more self-assertive and confident throughout the series. This backfires horribly.
• Heroic BSoD:
  • Yuki goes into severe depression after his mother is killed by his father.
  • In the anime, Yuki performs a Skyward Scream upon learning Yuno killed her second self.
• Heroic Self-Deprecation: He often states "I know I'm pathetic! I know it! But...I'm weak!"
• Hidden Depths: While Yuki is physically unimpressive, he has surprisingly quick reflexes which often come in handy.
• Horrible Judge of Character: He has a tendency to trust people who end up betraying him: 6th, Hinata and Mao, 4th (though he may not have been planning a betrayal at first) and his father to name a few. Zig-zagged with regards to Yuno, though; he wavers back in forth over whether to trust her. Often he will start to develop genuine feelings and trust for her, but then something horrible will happen to shatter that trust again.
• Hypocrite Has a Point: Yuno tells him that he has no moral high ground over her considering all the people he's killed. The context of their conversation, however, is that Yuno plans to travel from timeline to timeline, leaving them to destruction as she seeks new incarnations of him before eventually disposing of them too.
• I Can't Believe a Guy Like You Would Notice Me: When Yuno looks his way for a moment in the first episode, he quickly brushes it off with "Nah, can't be," and is genuinely surprised that she even knew his name^note He's shown conversing with her once a year prior to the third episode, although he himself barely remembers it, so presumably his low self-esteem would have made him assume she'd forgotten completely. Of course, his reaction to learning the truth of the matter is a little less than enthusiastic.
• I Just Want to Have Friends: He wishes to overcome his meekness and make friends. Too bad Yuno wants to be his Only Friend...
• Image Song: "You Are Your Life's Leading Part, So Walk With Confidence".
• Improbable Weapon User: He uses hand darts! Very good at it from years of practice at home.
• Innocent Blue Eyes: He's the most heroic of the diary holders and he's one of the few characters with blue eyes.
• Intergenerational Friendship: He develops something of an Odd Friendship with the adult terrorist Minene who becomes some sort of Cool Big Sis to him.
• I've Come Too Far: While chasing 8th, Yuki's friends try to tell him that he won't be able to bring the dead back to life if he becomes God. By that point, he has already committed countless crimes and killed many people; if he accepts what his friends are telling him, it would mean everything he did up to that point, especially after snapping and deciding to play the game in earnest, would have been for nothing. Though he seems conflicted over whether to believe his friends or Yuno, in the end he decides to listen to Yuno's lies, as he can't bear the thought of all his actions being all for nothing.
• Kid with the Leash: The only one who can ground Yuno in anyway.
• Kiss of Death: If you're not Yuno Gasai, kissing Yuki is a great way to get yourself killed. Tsubaki and Akise learned the hard way.
• Like Parent, Like Child: Like his mother Rea, he's friendly, caring and devoted to his loved ones and like
• Like Parent, Like Spouse: His first crush looks a lot like his mom.
• Living Emotional Crutch: To Yuno. When he jokingly accepted her wedding proposal, it gave her a reason to live.
• Lonely at the Top: Enforced and Justified. Yukiteru had to kill the last person who was important to him, Yuno, and became god of the empty 2nd-world.
• Loners Are Freaks: Gets this treatment at school due to his own asocial personality. However, he does try to get better and make friends. Unfortunately, Yuno won't let anyone get close to Yuki.
• Loner-Turned-Friend: He manages to make a small group of friends with Akise, Hinata, and Mao (and Kosaka). However, they all end up dying, mostly at his hands, in his quest for Godhood.
• Loser Son of Loser Dad: Only Kurou is far more pathetic and cowardly than Yuki will ever be because while Yuki is a wimp, he's willing to do anything for Yuno and his family, while his own father abandons him to die with Yuno in a building that's breaking down and kills his wife just to avoid taking responsibility for his actions.
• The Lost Lenore: His 1st-World self serves as this for 1st-world Yuno, who then becomes this for 2nd-world Yuki.
• Love Makes You Crazy: Later, Yuki goes quite crazy for his dead parents AND Yuno.
• Love Martyr: Once he genuinely falls for Yuno, the sheer amount of crap he puts up with from her while still sticking loyally by her side most definitely makes him this.
• Masculine Girl, Feminine Boy: Feminine Boy to Yuno's Masculine Girl. Yuki is a meek and timid wallflower and for the most part of the series, the aggressive and violent sociopath Yuno is often the one to protect him and look after him.
• Morality Pet: While Yuno is a murderous psychopath, she's very loving and protective towards Yuki no matter the circumstance and he's the only one who's able to keep her grounded when she's about to kill people in order to preserve Yuki's safety and her relationship with him.
• Necessarily Evil: How Yukiteru views himself, once he decides to actively take part in the Survival Game. Prior to that, the only people he killed were in direct self-defense. As he begins killing in order to win the game, he justifies it by saying that once he becomes the new god, he can resurrect everyone he's killed and give them happy lives. Cruelly enough, he finds out far too late that even God can't bring back the souls of dead people. He doesn't take this news well.
• Necromantic: His eventual reason for trying to win the game is to bring his parents back to life.
• Nervous Wreck: Prone to freakouts, especially with Yuno's insanity and impulsiveness bringing more harm than good.
• Nice Guy: Yuki is very sensitive, gentle and compassionate for a guy in a game of death and oftentimes, he tries to be the merciful hero until he's forced to get his hands dirty.
• No Guy Wants to Be Chased: Yukiteru makes it very obvious that Yuno's insanely aggressive obsession and pursuit of him is what puts him off and scares him away from her. Numerous times, he suggests that if she were to be more passive and gentle, he would fall for her completely in an instant. Though this not might be true and maybe just because Yuno's trying too hard. 'Cause she's a Yandere.
• Non-Action Guy:
  • In the beginning, he leaves most of the fighting to Yuno, though it's downplayed since even then he offs three other diary owners even before taking a level in badass. This is subverted later on when he becomes more competent in combat and even fights alongside with Yuno.
  • His 1st-world counterpart averted this. When Muru-Muru tells Yukiteru how the survival game worked in the 1st -world, it was revealed that 1st-world Yukiteru took more active roles in fights, such as preventing 1st-world Minene from detonating more bombs by stabbing her hand and charging at Marco to defend 1st-world Yuno.
• Non-Action Snarker: He's a Non-Action Guy for a good part of the series and the English dub gives him many snarky lines.
• No Social Skills: He's a pretty awkward teen due to being a social recluse and he starts off not having any friends.
• Official Couple: With Yuno. Although at first he just said she's his girlfriend to try and stop her from killing his friends, he later does develop feelings for her and their relationship slowly grows into the genuine article.
• Only Sane Man: Out of all the diary holders, he appears to be the sanest and rational. However as the series goes on, he slowly begins to slip.
• Opposites Attract: Yuki being a meek and timid introvert and Yuno being a reckless and aggressive sociopath, these 2 become something of an Odd Couple which progressed from Yuno's Yandere tendencies as she stalks him relentlessly and Yuki is a pushover that depends on her for survival.
• Ordinary Middle School Student: Before the Survival Game, there was nothing really abnormal about his life.
• Pitbull Dates Puppy: Yuki is a cowardly and passive Extreme Doormat who always tries to run away crying from danger, while Yuno is a sociopathic and possessive Yandere who will happily kill anyone that gets in her and Yuki's way. At first, Yuki is terrified of Yuno, but he keeps her around because he needs a bodyguard and he's even more scared of what she might do to him if he rejects her "love". He does eventually fall truly in love with her, but things are complicated when she does things like kidnapping him, tying him to a chair and keeping him drugged for an entire week, to ensure that he'd stay "safe".
• Please Put Some Clothes On: His default reaction to Yuno being Pants-Free, in a Slippery Swimsuit, or undressing right in front of him, though never verbally.
• Porn Stash: Yuki has one under his bed. Yuno found it.
• Properly Paranoid: There are multiple times when Yuki is terrified of Yuno's violent and stalkerish behavior. Not that he's wrong in being afraid of her.
• The Protagonist: He is the first and main protagonist in the series.
• Protagonist Journey to Villain: He slides down the scale as the series continues. It gets somewhat subverted in the finale, as he ends up saving the 3rd-world from Yuno and the Survival Game.
• Protectorate: Yuno's top priority is to protect Yuki at any cost.
• Really 700 Years Old: He spends 10,000 years doing nothing after becoming God, but he still looks quite young afterwards.
• Red Oni, Blue Oni: The timid, cowardly and passive Blue Oni to Yuno's aggressive, passionate and sociopathic Red Oni.
• Roaring Rampage of Revenge: Up until that point, Yuki was usually reluctant to kill, but after 11th's men killed his father, Yuki snapped and killed them all (except for the last one, who Yuno took care of).
• Romantic Fake–Real Turn: Yuki is freaked out by his Yandere stalker Yuno, but he feels he has no choice but to accept her as his girlfriend because he does need her protection in the Survival Game and claiming they're dating helps keeping her from killing his friends out of jealousy. Their relationship has many ups and downs, yet Yuki does develop true feelings for Yuno to the point he chooses her over a perfect world with his parents.
• Sanity Slippage: Initially he was an emotional, neurotic and passive introvert, but after witnessing so many people die and losing his parents, Yuki loses his sanity and becomes a murderous extremist in order to become a god and he even kills his friends for getting in his way.
• Savvy Guy, Energetic Girl: Yuki's strategic and rational Savvy Guy and Yuno's reckless and manic Energetic Girl.
• Say My Name: Yuki escapes from Yuno's Lotus-Eater Machine by turning down the opportunity to go stargazing with his parents and screaming Yuno's name.
• Shrine to the Fallen: He builds one for his mother Rea after her death.
• Shrinking Violet: He's very shy and withdrawn. Initially, he avoided other people and being involved, describing himself as a 'casual bystander'. He later admits he really did want to have friends, but was "afraid of life". Part of his Character Development involves standing up for himself, on his own.
• Slowly Slipping Into Evil: Through the series, Yuki tries his best to stay clear of the violence going on around him, but finally gives in after the death of his parents. But the final straw is when his friends tell him he can't resurrect the dead even as god, which had been how he justified as Necessarily Evil the killing of rivals in the game. Unable to accept this, he ends up killing his friends when they stand in his way.
• Socially Awkward Hero: Yukiteru starts off as a socially awkward, timid and neurotic loner with zero reasons to be a God until his family dies and while he fails, he's able to save Yuno from being raped and kept Yuno from killing her 3rd-world self.
• Spanner in the Works: He hijacks the entire future of the third Survival game when he follows Yuno to the 3rd-world since his data entries in the second game show up in 3rd-world's John Balks's diary and warn him of the incoming disasters. It changes every diary holder's future and gives them happy endings.
• Spell My Name With An S: Yuno calls him "Yuki" or "Yukki", depending on which version you're reading. Also, in messages and diary entries, ユッキ― is normally used, which is romanized as "Yukkii".
• Star-Crossed Lovers: With Yuno, since one of them needs to die to complete the Survival Game, and leaving the game unfinished too long will cause the end of the world and they'll both die. At the end, 1st-world Yuno dies to ensure 2nd-world Yuki lives, but her memories are given to her 3rd-world self and she becomes god to be with Yuki.
• Strong Family Resemblance: Yuki is a male version of his mother.
• Strong Girl, Smart Guy: Yukiteru is The Strategist while Yuno commits the violence.
• Supporting Protagonist: He's the point of view character, but the one who takes more action in the story is Yuno. Later he Takes A Level In Badass and becomes more prominent for the plot.
• Tears of Fear: He tends to cry in fear often in the beginning.
• This Loser Is You: Yuki is a fearful and fragile teenage boy with quite a few social phobias who hates getting involved in conflicts and rather than facing his problems, he prefers to isolate himself and drown out the world with his cell phone and imaginary friends.
• Took a Level in Badass: Hey, it was bound to happen eventually. He ditches the darts in favor of a sub-machine gun, for one.
• Tragic Dream: Yukiteru's dream is to someday go stargazing with his parents together as a family, but that dream became impossible ever since they got a divorce and died. When he is trapped inside Yuno's Lotus-Eater Machine, Yukiteru almost gets his dream but at the end, he chooses Yuno instead.
• The Unfettered: Once he resolves to become god to revive his parents, Yuki drops all moral conventions and starts killing anyone who gets in the way of his goal. Although, he did believe he could simply revive all the people he killed too, only to find out it was impossible from the start.
• Unholy Matrimony: With Yuno, after he becomes nearly as crazy and murderous as her.
• Uptight Loves Wild: Timid Yuki at first was annoyed by Yuno's crazy behavior but does grow to love her the same way she loves him.
• Useless Protagonist: He frequently slipped into this, often sitting back and letting Yuno or someone else (like Akise) solve his problems for him for entire arcs at a time. He got better once he was broken and subsequently Took a Level in Badass.
• Utopia Justifies the Means: He doesn't care how many people he has to kill, as long as it ends with him becoming the next god so he can fix the world and then resurrect his victims. Too bad it doesn't work that way.
• Villain Protagonist: Becomes this later during the series. After Yuki loses his parents, he becomes willing to kill his enemies in very cruel and nasty ways. Despite this, Yuki doesn't actually want to kill people and wants to bring everyone back to life once he becomes god, not knowing it's impossible.
• Weak, but Skilled: For a long time he's not much of a fighter, but Yuki is among the most skilled at using his diary both in and out of combat.
• Well-Intentioned Extremist: Later, Yuki does really extreme things like tricking Eighth and massacring her orphans in the name of becoming God and bringing everyone who died back to life.
• What the Hell, Hero?: Yuno gets called out by Yuki all the time, but especially for kidnapping him and keeping him locked up for a week to "protect" him.
• Would Hit a Girl: While being held captive by Yuno, he gives her a well-deserved slap. Not hard enough to leave a bruise, but hard enough to let her know that he's tired of what she was doing.
• Wouldn't Hurt a Child: Yuki is rather reluctant to kill Reisuke due to the fact he is 4 years old.
• You're Insane!: To Yuno after she tells she will kill him so she can go back in time again.

Yuno Gasai - The Second

Voiced by: Tomosa Murata (JP), Brina Palencia (EN)

An insane, violent, sociopathic, nihilistic classmate of Yuki's who's obsessively stalking him, claiming to be madly in love with him. Her "Yukiteru Diary" tells her what's happening to Yuki at every 10-minute interval, and won't show anything unrelated to him except for her own dead end. Since Yuki's diary records everything except what happens to him, the two of them presumably make a formidable team. If only she was more comforting to be around...

See her page here.

Takao Hiyama - The Third

Voiced by: Jin Domon (JP), Jason Douglas (EN)

A teacher at Yuki's school who's secretly a serial killer. His "Murder Diary" gives him detailed information on the location of his intended victim, making it a powerful weapon for ruthlessly pursuing his target. However, it offers little protection.

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• Affably Evil: He seems to be a fairly decent guy when he's teaching middle school class to his students. It's little wonder few suspected him of being a Serial Killer.
• Asshole Victim: Moreso than any other diary owner. Compared to everyone else, he has no sympathetic backstory or grander ambition for what he does and seems motivated to kill purely For the Evulz, so his many deadly misfortunes are quite deserved. Even in the 3rd World where everyone else gets a happy ending, his ultimate fate is to be arrested by Twelfth and visited by his captor in jail (which is admittedly a preferable ending compared to the ways he died in the previous timelines).
• Butt-Monkey: Surprisingly often. He is the first diary owner to get killed, he kept killing himself several times over when Mur Mur first tried to give him his diary, he fell victim to one of Minene's amplified sound bombs in Mosaic, appeared in a flashback chapter to be accidentally (and comically) speared in the back by Yuno, and was given an electric shock in Paradox. In the penultimate chapter, he's pinned to the ground as he's apprehended by Twelfth, and he can be seen in the back of one of the final group shots, running from a few pursuers. In the anime, he's in jail. Mur Mur wasn't too surprised that he was the first to go.
• Coat, Hat, Mask: A practical version, as the costume he wears is not only bulletproof but somehow also bombproof. This comes in handy when Minene attacks him in Mosaic, as she quickly learns that her usual battle tactics are useless against him.
• Establishing Character Moment: We get to see one of his victims begging him not to kill her before cutting to a Gory Discretion Shot of her blood spattering the concrete. This lets us know what a twisted individual he is.
• Evil Redhead: His red hair is one of the few things his murder gear doesn't cover up.
• Friendly Enemy: With Twelfth, who's seen visiting him in prison in the 3rd-world's epilogue.
• Image Song: "THIRD/Antares Cr302".
• Implacable Man: While he doesn't get a chance to show this off in his brief encounter with Yukiteru and Yuno, he proved himself to be this in Mosaic/Episode 10 in the anime during his confrontation with Minene. He kept coming after her unrelentingly and wasn't even slowed down by the bombs exploding around him and by being shot at. Pity that his diary is nowhere near as invulnerable as the man himself.
• Long-Haired Pretty Boy: The few times we see him without his mask, he actually isn't bad to look at.
• Malevolent Masked Man: In his murder gear, he wears what looks like a gas mask.
• Sacrificial Lamb: Killed off within the first chapters and the first episode to demonstrate the rules and consequences of the survival game. Doubles as a Red Shirt.
• Serial Killer: Though his experience when it came to killing didn't end up helping him much in the game.

Keigo Kurusu - The Fourth

Voiced by: Masahiko Tanaka (JP), Robert McCollum (EN)

A police officer who wishes to stop the other crazy diary holders. His "Case Diary" gives him information on all future crimes in his district as though he had already investigated them. He introduces himself early on as an ally to Yuki and Yuno, forming the Future Alliance.

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• Alliterative Name: Keigo Kurusu.
• Batman Gambit: He sets up Yuki and Yuno (at least the latter, anyway) to commit a crime by having both taken to the police station, having Yuki brought in for interrogation, and playing a game of Russian Roulette with him, knowing full well just how Yuno would react to Yuki being in danger.
• Bulletproof Vest: Worn as part of his plan to incriminate Yukiteru and Yuno. He fully expects Yuno to shoot at him. He just didn't expect her to shoot him in the head, blowing off his ear.
• The Commissioner Gordon: As soon as he meets Yuki and Yuno he tries to work with them to go after and identify the other future diary users. Though this is subverted later on.
• Death Equals Redemption: Apologizes for betraying Yukiteru before he disappears.
• Decoy Protagonist: At first early in the series he seemed to fulfill the role of the Tritagonist of the series, but then when he turns on Yuki and Yuno and becomes another antagonist, Minene becomes the true tritagonist of the series.
• Defective Detective: We find out that he's so busy with work he hasn't been able to spend time with his wife and son. Not only that, but his son is in the hospital, leading to his Face–Heel Turn (assuming he wasn't plotting it from the very beginning).
• Dirty Cop: Uses the power of the police force to arrest Yukiteru and Yuno, then uses the power of his Future Diary to frame them for the murder of the Tenth.
• Driven to Suicide: He kills himself by destroying his own Diary.
• Expy: Keigo is a Composite Character of Shuichi Kitaoka and Masashi Sudo.
• Face–Heel Turn: Forced to do this in order to save his dying son.
• Point of Divergence: In the original timeline, his alliance with Yukiteru and Yuno lasted until near the end of the Survival Game, but Mur Mur decided to inform him of his son’s terminal prognosis much earlier than he initially learned of it, causing him to betray them sooner than he was supposed to. Deus predicted him lasting longer than he did, and this tips him off to the truth behind Mur Mur and Yuno.
• Image Song: "Running For Your Life".
• Logical Weakness: Kurusu's diary is the Case Diary, so as long as he's chasing down his suspects, he'll continue to get info on their next moves. Rather than trying to take him down directly, Minene goes to Nishijima and informs him that Kurusu was responsible for murdering Tenth and framing Yuki and Yuno. Once Nishijima arrests him, Kurusu loses the authority to continue his investigations, and thus his diary stops recording future events, rendering him extremely vulnerable.
• Manipulative Bastard: Implied to have been influencing events and manipulating others for a decent amount of time after his introduction, starting with letting Minene go free from the Omekata Temple.
• Passing the Torch: In the anime, Kurusu leaves a record of the survival game to Nishijima, including the defunct diaries of the dead owners.
• Perma-Stubble: Subtle but there, going with his normal "detective" appearance.
• Russian Roulette: Plays a game of this with Yukiteru, in order to provoke Yuno to attack him in an attempt to frame them so that his Future Diary could track them. The game was rigged from the beginning to drive this point home.
• Scars Are Forever: He gets his ear shot off by Yuno.
• Smoking Is Cool: As most detectives in anime are prone to.
• Sweet Tooth: Downs his coffee with a lot of sugar cubes.
• Take Care of the Kids: Before eliminating himself, he asks Minene to look after his son.
• Too Clever by Half: Subverted, Kurusu attempted to bait Yuno into shooting him while he was secretly wearing a Bullet Proof Vest to implicate her and Yuki. Kurusu didn't account for the possibility that Yuno would go for a headshot first, and even he admits that he got lucky that he only lost an ear in that gambit.
• Well-Intentioned Extremist: He betrays Yukiteru and Yuno in order to save his son.
• What Could Have Been: In-universe example. According to Deus, he was supposed to be among one of the final players of the game and was not supposed to find out about his son's illness until much later. It turns out that his earlier demise was actually orchestrated by Mur Mur.

Reisuke Houjou - The Fifth

Voiced by: Asami Sanada (JP), Lindsay Seidel (EN)

A 4-year-old boy left an orphan in the same incident that led to the Sixth's death. He is eager to prove himself to be a "super elite". His "Hyper Vision Diary" is a coloring book that displays pictures and summaries of three major events each day. It gives him plenty of time to plan his daily strategy, but it's not too helpful for predicting the immediate future.

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• Affably Evil: He genuinely likes Yuki and Yuno, whom he views as his brother and sister. As far as he is concerned, him attempting to kill them is just a part of the game.
• Blush Sticker: He has permanent ones on his cheeks.
• Cheerful Child: In Paradox and the 3rd-world, he's just as cheerful, but isn't trying to kill anyone since his parents weren't killed.
• Creepy Child: A little boy with a very diabolical mind.
• Cute and Psycho: A cute little 4-year-old boy who enjoys talking to his hand puppets, drawing pictures, and using his magical coloring book to commit murders.
• Death of a Child: He is killed by Yuno.
• Deliberately Cute Child: Reisuke knows that no one would suspect a little kid of being one of their enemies, so he exploits this as he attempts to "accidentally" kill Yuki and Yuno while maintaining his facade.
• Enfant Terrible: An adorable 4-year-old who uses his magic picture diary to adorably kill people.
• Evil Orphan: Yuno kills his parents and then he happily tries to kill her and Yuki.
• Evil Redhead: His hair is red and he is quite creepy.
• Freudian Excuse: We see that Reisuke's parents weren't a happy family like we were made to believe. His parents were often fighting and he would be left in the corner of the room by himself. He was seriously happy being taken care of by Yuki's mother, and in the 3rd-world where Reisuke's parents didn't join the cult, and therefore weren't fighting all the time, Reisuke's ends up as a normal child, so his parents are the cause of his creepy tendencies.
• Go Out with a Smile: He dies smiling after Yuno kills him, which actually satisfies him.
• Graceful Loser: Reisuke is very satisfied with the fact that Yuno is the one who defeats him and he even tells her to win The Game before she kills him. His Diary reflects his last thoughts: "Hojou Reisuke is killed by Gasai Yuno. DEAD END. . . But I'm very happy!"
• Hand Puppet: He carries a pair of hand puppets around with him, which he talks to as though they were real.
• Image Song: "Perfect Trap".
• Kid Sidekick: 3rd-World Reisuke to Akise in Redial.
• Leitmotif: Chiptunes.
• Nightmare Fuel Coloring Book: His Future Diary is a coloring book that shows him how to commit murder.
• Pet the Dog: He seriously enjoyed his time at Yuki's place (despite how twisted he viewed it as) and refused to put Yuki's mom in danger of his hide-and-seek game.
• Revenge: His trying to kill Yuno; it's played with as while he does consider the fact that Yuno inadvertently killed his parents, he quickly brushes it off—but in Mosaic he reveals that he really does love his parents despite what happens.
• Slasher Smile: A master of this. Particularly in the anime's second opening.
• Trap Master: His main way of trying to kill Yuki and Yuno. He uses the entries in his future diary to plan out deadly traps such as poison gas to electrocution.
• Troubling Unchildlike Behavior: Comes with being an unstable 4-year-old who is in a game that revolves around killing people.
• Villainous Crush: Despite his attempts of trying to kill Yuno, he quickly grows fond of her during his stay at Yuki's home. By the time he dies, his diary tells us that he's happy that Yuno killed him.
• Weak, but Skilled: His diary only shows three entries for the day during the morning, noon, and night. Despite that, it has a certain advantage of giving Reisuke all three entries at the same time, which allows him ample time to carefully plot his next move, as well as some pictures drawn by him, giving him some source material other than writing.

Tsubaki Kasugano - The Sixth

Voiced by: Eri Sendai (JP), Kate Bristol (EN)

The young priestess for the Omekata cult, who supposedly possesses clairvoyant powers. She has been imprisoned in the cult's temple her entire life because of her poor eyesight. Her parents were the founders of the cult, and after their deaths (or better said, their murders) she became its leader of sorts. Her "Clairvoyant Diary" is a scroll that records what every worshipper in the cult sees, giving her much greater range than most other Diary Holders. While it provides a large amount of information, the scroll is also cumbersome and slow to use, making it difficult for her to react immediately to changes.

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• Adaptation Dye-Job: Her red eyes in the manga were changed to purple in the anime.
• Alas, Poor Villain: She dies as soon as she is reunited with her ball, which was a Tragic Keepsake that represents her bond with her parents. Her final words are questioning why she finally got it back at the end of her life.
• Attempted Rape: Tsubaki orders the cult members to strip and gang-rape the captive Yuno, in an attempt to lure the escaped Yukiteru out. He pulls a Big Damn Heroes and stops her.
• Being Tortured Makes You Evil: She was thoroughly abused by the Omekatas, and ended in mentally/emotionally collapsing.
• Berserker Tears: Tsubaki cries these when her diary is destroyed in the manga right after she sees her old handball.
• Bitch in Sheep's Clothing: She appears a Yamato Nadeshiko at first, but she is actually a Manipulative Bitch who is planning to destroy the world.
• Blind Seer: Her supposed powers of clairvoyance make up for her poor eyesight. However, it's subverted when it's revealed her clairvoyant powers are a lie.
• Broken Bird: Losing her parents and being repeatedly gang raped has left her as an angry and sour girl who wants to destroy the world.
• Broken Tears: In the anime, right before her death, she finds her lost ball and tears up when she realizes she no longer has her hand to hold it in her final moments.
• Chekhov's Gun: Yukiteru finds her lost handball and throws it in the air, foiling the powers of her diary and letting him destroy it, killing Tsubaki.
• Cute and Psycho: She seems at first to be a Yamato Nadeshiko, but then we see that her backstory of orphanhood and sexual slavery drove her completely insane.
• Decoy Damsel: She plays the false role of a Damsel in Distress in order to easily lure in Yuki and turn him against Yuno, using his habit of quickly trusting people against him.
• Despair Event Horizon: Crossed in her Back Story, after her Tragic Keepsake disappears, thus she has no way to keep her sanity in between all of the abuse the Omekatas subject her to.
• Did Not Think This Through: What the hell was she thinking kissing Yukiteru in front of Yuno?! This cost her a hand...a hand that could've saved her diary from being struck by a single dart.
• Evil Orphan: After her parents were killed, she went mad from being used as a Sex Slave for the Omekata Cult.
• Fan Disservice: We find out about her Sex Slave deal through a flashback that starts with a barely pubescent Tsubaki lying naked on the floor, shivering and terrified, right before she's gang-raped by the men of the Omekata cult. Additionally, the scene where she decides to go the Woobie, Destroyer of Worlds route has her lying naked on the floor, murmuring madly about her purpose.
• Freudian Excuse: She's a manipulative Bitch in Sheep's Clothing who wants to become god so she can destroy the world, but anyone would be as damaged as her after being repeatedly gang raped by an evil cult that keeps you prisoner.
• Glass Cannon: The "Clairvoyant Diary". She can use it to record what her cult members see and thus has a vast range, but it's very slow and hard to use. It also presents the largest target, which is problematic when a single hit from one of Yuki's darts is enough to count it as destroyed and she couldn't move it in time because Yuno cut her hand off earlier (in part due to her wise decision to kiss Yukiteru in front of Yuno).
• Good Smoking, Evil Smoking: She pulls out a pipe and smokes on it when Yuno falls victim to a Distress Ball right after killing the Twelfth and this allows her to her trap them, Kurusu and Minene inside the Omekata temple.
• Hiding Behind Your Bangs: Her right eye is almost always covered by her hair. In the anime, it is also perpetually closed after she is imprisoned by the cult, perhaps implying that it is missing or nonfunctional. Her hairstyle also symbolizes her devious Bitch in Sheep's Clothing personality.
• Hime Cut: Long hair all around, even bangs and sidelocks show her status as a miko and Yamato Nadeshiko looks. One side of the bangs hanging down in front of one eye hints that she herself is not even either.
• Hoist by His Own Petard: Kissing Yuki in front of Yuno resulted in her hand being cut off...which played a big role in her death because she couldn't use it to protect her diary from being struck by Yuki's dart.
• Image Song: "Cries Of Avici (6)".
• Manipulative Bitch: Tries to manipulate Yuki, Yuno, Kurusu, Minene, and Hirasaka for her own benefit.
• Mask of Sanity: Tsubaki pretends to be a perfectly sane Yamato Nadeshiko to gain Yuki's trust, but she's really just as, if not even more, insane than Yuno.
• Miko: Subverted. She's nominally the priestess for the Omekata cult, but doesn't actually have mystical powers and the cult just keeps her prisoner as a Sex Slave.
• Obfuscating Stupidity: This should have been really obvious.
• Omnicidal Maniac: She wants to become god to destroy the entire world.
• Phony Psychic: Tsubaki doesn't really have clairvoyant powers; it was all a lie made up by her parents.
• Rape as Backstory: After her parents (and the Omekata founders) were killed, Tsubaki was imprisoned and used as a Sex Slave by the cult while making her "pose" as the leaderess.
• Rape Leads to Insanity: Being Omekata cult's Sex Slave caused her to lose her mind.
• Red Eyes, Take Warning: Her eyes are blood red in the manga which serves to make her look even more maniacal when she starts to become more psychotic.
• Reflectionless Useless Eyes: Her eyes lack shine, signifying her poor eyesight.
• Sex Slave: The Omekata cult keeps her prisoner as their sex toy.
• Stalker with a Crush: The 3rd World's Tsubaki stalks Akise. However, some of her friends think she's stalking Kosaka instead.
• "Take That!" Kiss: Pulls one on Yukiteru right after trapping him, Yuno and others. Yuno reacts as well as expected.
• Tragic Keepsake: A handball given to her by her deceased mother. It gets lost later, and Tsubaki definitely loses it soon afterwards. Fittingly that she dies just after seeing it one more time when Yukiteru tosses it into the air.
• Used to Be a Sweet Kid: Before her parents were killed, Tsubaki was a nice little girl until she was turned into a Sex Slave and decided to destroy the world.
• Woobie, Destroyer of Worlds: She wants to become god so she can destroy the world that has made her suffer so much.
• Yamato Nadeshiko: As a soft-spoken and frail-looking miko with a Hime Cut, she looks the part of a traditional Japanese lady. However, her past traumas have caused her true self to be far from it. She does really have the elegant and strong-willed personality in Paradox and the 3rd-world where her parents weren't murdered.

Marco Ikusaba and Ai Mikami - The Seventh

Marco is voiced by: Tomokazu Seki (JP), Brad Hawkins (EN)

Ai is voiced by: Natsuko Kuwatani (JP), Jamie Marchi (EN)

A pair of orphans in love with each other. Their "Exchange Diary" is actually two cell phones that report each other's immediate future. The couple displays excellent teamwork as they use their diaries to cover each other's weaknesses.

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Both

• Adaptation Expansion: The anime expands more on their time in high school together rather than just the two flashback scenes in the manga in the tower where Marco and Ai first meet and where they decide to get married. The anime added in a rather dark story in which Ai is set up by her female classmates to be gang raped by a group of boys, with Marco finding her and her captors afterward. He then proceeds to beat down the group and even manages to kill one of her rapists. They later go the tower where Marco is almost Driven to Suicide over not being able to protect Ai, only to be stopped by Ai herself, who begs him not to leave her alone. It helps to add to his reason for not leaving Ai behind in the tower when it started to collapse.
• Babies Ever After: In the 3rd-world, they have two sets of twins and are expecting yet another child.
• Battle Couple: They're a couple deeply in love and fight in the Survival Game as a duo with the goal of becoming a God Couple together.
• Bonding over Missing Parents: The orphan Marco first met Ai the day her parents abandoned her and they've been close ever since.
• Bond Villain Stupidity: They were the only diary owners who managed to both beat up Yukiteru and Yuno and take away their diaries during their first confrontation. Having the two at their mercy, they made them bring Yukiteru's father (secretly working for Eleventh) to them. After they got their hands on Yukiteru's dad, Marco stated that they didn't have any reason to keep Yukiteru and Yuno alive anymore. Instead of destroying their diaries that very moment... Marco and Ai didn't and even challenged Yukiteru and Yuno to a rematch that resulted in the two recovering their diaries. Marco even mentioned that he could have simply destroyed the diaries, but that would be too easy and boring. After that happened, Ai admits that she and Marco should have simply destroyed the diaries.
• Childhood Friend Romance: They first met when they were children after Ai was abandoned by her parents and both grew up together in Eighth's orphanage. They fell in love as teenagers and finally get married as adults.
• Cool Shades: Both are seen wearing matching sunglasses on occasion.
• Declaration of Protection: They have sworn to protect each other.
• Devoted to You: Both are completely devoted to each other, even choosing to die together instead of being separated.
• The Dividual: They're both The Seventh, working as a duo and rarely being seen without the other. Even their diaries' predictions only truly work thanks to them being always together.
• Face Death with Dignity: After being fatally wounded in their fight against Yuki and Yuno, Marco and Ai stay at the collapsing Sakurami Tower and spend their final moments in peace as they're satisfied with just being together at the end.
• Foil: Towards Yukiteru and Yuno, since Marco and Ai are a Battle Couple who love each other more genuinely and healthily.
• Graceful Loser: When it becomes obvious that they are going to die, they don't take Yukiteru and Yuno down with them and even give them their last parachute, making it possible for the two to escape from Sakurami Tower. Even though they killed each other's lovers, they held no grudge against them for it and recognized that it was simply part of the game.
• Happily Married: In the 3rd-world, they are seen as a happy married couple expecting their first child.
• Hero Antagonist: They're enemies to Yuki and Yuno as part of the Survival Game, but they are ultimately good people, while Yuno is actually a Villain Protagonist.
• Image Song: "7th Heaven".
• Love Freak: They're always talking about The Power of Love.
• Mistaken for Cheating: A Running Gag with this pair is Ai panicking when she thinks Marco is cheating on her. Hilariously, it leads to their engagement; Ai's diary entries predict Marco is going to meet with another woman in secret and get a box from her, but it's actually an engagement ring for Ai.
• Official Couple: They get engaged during the Survival Game and have their wedding ceremony before their final confrontation with Yukiteru and Yuno.
• Only Sane Man: Out of all the diary owners, Marco and Ai seem the sanest, although this is shared with Kamado and Yuki before his badass upgrade.
• The Power of Love: They insist that this is why they win their fights.
• Spanner in the Works: By taking Yuki and Yuno's diaries, they unintentionally prevented Yuki's dad from finding his diary and breaking it.
• Together in Death: Marco decides to stay with Ai in the Sakurami Tower instead of escaping alone and both die together during the tower's collapse.
• Undying Loyalty: Both would rather die than betray or abandon each other.
• Villainous Valour: They are in truth antagonists to the main characters, not villains, and prove themselves to be very devoted to one another, even more so than Yuki and Yuno.
• Would Not Shoot a Civilian: Although Yuki's friends are actively helping Yuki, Marco and Ai take them down with nonlethal force, drag them out of the building before the bombs go off, and even treat their wounds.

Marco

• '80s Hair: Marco sports a long, curled perm.
• Always Save the Girl: He believes a man's top priority is to protect his woman from anything.
• Ambiguously Brown: Marco is a former orphan with an olive skin tone and a non-Japanese first name, but he spent his life in Japan with Ai.
• Berserk Button: Non Action Guys. This may be because of how he couldn't help Ai when she was in trouble, thus thought of himself as one.
• Boisterous Bruiser: He's Hot-Blooded, loud and always ready for a fight.
• Bruiser with a Soft Center: He acts like a Boisterous Bruiser, but his main motivation is his deep love for Ai and shows a very sweet side around her.
• Curtains Match the Window: Brown hair and eyes.
• Don't You Dare Pity Me!: Tells Yukiteru not to look at him and Ai with pity after being defeated.
• Hot-Blooded: He's very loud and passionate man.
• Hunk: A very attractive, muscular and manly young man.
• I Gave My Word: His promise to always be with Ai and protect her from any suffering and make her happy is Marco's sole motivation. He proves he is a man of his word by giving Yukiteru and Yuno the last parachute and choosing to remain with Ai's body as the Sakurami tower collapsed around them.
• Impaled with Extreme Prejudice: Marco ended up impaled with a metal pipe during Seventh's second battle with Yukiteru and Yuno. Though it probably wasn't this but rather the collapse of the Sakurami Tower that killed him.
• Interrupted Suicide: In his backstory in the anime, he tried to stab himself in the throat, but Ai stopped him.
• Lightning Bruiser: When sufficiently angered, Marco has proven himself to be a virtually unstoppable force in combat. In his final appearance in the 2nd-world, he is revealed to possess strength that borders on monstrous levels when he lifts several tons of rubble in order to reach a dying Ai.
• Manly Tears: He sheds tears in several scenes involving Ai.
• Mr. Fanservice: Shows his well-toned chest in his introduction, providing this effect.
• My Greatest Failure: In the anime-only backstory, after failing to protect Ai from being gang raped, Marco promised to always be at Ai's side to protect her and holds true to his word even in their final moments.
• What the Hell, Hero?: Calls Yukiteru out about how he lets Yuno do all the fighting while he just stays hidden behind her.

Ai

• Action Girl: Fights with knives.
• Bare Midriffs Are Feminine: Ai is the female half of The Seventh and she fully exposes her midriff with a very loose jacket.
• Chekhov's Gunman: Ai has an Early-Bird Cameo, disguised as one of Tsubaki's followers.
• Designated Girl Fight: Against Yuno, though Marco joins in soon after.
• Hiding Behind Your Bangs: In her first appearance, Ai is a spy infiltrating Sixth's hideout. Her hair covers one of her eyes until she changes her hairstyle on her proper introduction.
• Rape as Backstory: In the anime-original backstory, some jealous classmates set Ai up to be gang raped. Marco arrived at the scene and killed Ai's rapist.
• Sympathy for the Devil: Shows great concern for Sixth while undercover.

Kamado Ueshita - The Eighth

Voiced by: Hiromi Konno (JP), Monica Rial (EN)

A very...uniquely shaped woman who runs an orphanage. Her "Propagation Diary" is actually a server that can be accessed by the people she allows, giving each person their own "Child Diary" that can predict the future in various ways. She hasn't shown much interest in winning the game, but the children at her orphanage willingly fight to protect her by eliminating the other Diary Holders.

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• Blush Sticker: She has permanent blush marks on her cheeks.
• Face Death with Dignity: She does not resist her death and simply asks Yuki to make a world where children can live happily.
• Friend to All Children: She adores the children at her Orphanage of Love like they were her own and the children are willing to die for her sake.
• Harmless Villain: She doesn't want to win the game, and relatively speaking she hasn't shown herself to be nearly as crazy or murderous as the other Diary Holders.
• Hero Antagonist: She's actually a lot nicer and more sympathetic than the protagonists let alone the other antagonists. The only reason she's an antagonist is that she's a diary holder and the morality of the series, and even then she's only fighting because her orphanage's kids don't want to see her die.
• Image Song: "LOST CHILDREN".
• Last Request: Before dying, she asks Yuki to create a new world where children can live without worries.
• Morality Pet: Bacchus is completely antagonistic towards the other characters except for Kamado. He acts like a true gentleman around her.
• Neutral Female: Battle and personality-wise, she prefers to have others fight for her, hence the Apprentice Diaries and only wants not to be bothered as she takes care of her kids.
• Non-Standard Character Design: She looks far more cartoony than the other characters, with Super-Deformed proportions and a head about half the size of her body.
• Official Couple: In the last episode, Kamado and John Bacchus are unambiguously shown to be a couple in the 3rd-world. The Redial manga reveals they got married.
• Only Sane Woman: She's one of the few completely sane and kind-hearted diary holders.
• Super-Empowering: She's never shown using her own diary to predict the future, but she can give out Child Diaries.
• Superpower Lottery: As Eleventh figures out, since she can provide a near infinite amount of diaries to possible wielders so she'll never have to fight, and those diaries can be easily replaced without the wielder dying like a natural Diary user. He even plans to gain omnipotence^note since his Diary can read all the other Diary users' predictions combined with this power, providing him with a near-infinite army. Eighth, on the other hand, does not show interest in this potential.
• Too Good for This Sinful Earth: Was hands down, the nicest Diary Holder. When killed, she asks Yuki to create a good world, not even holding a grudge against him.
• Unusually Uninteresting Sight: No one in-universe except Mur Mur seems to be bothered by her appearance.
• What Does She See in Him?: Her orphans' reactions to her going out with the Mayor of the 3rd-world.

Minene Uryu - The Ninth

Voiced by: Mai Aizawa (JP), Emily Neves (EN)

A terrorist bomber raging against the world. Her "Escape Diary" explores each possible option and recommends the best course of action to escape danger, making it very helpful for avoiding death. It will still display a DEAD END when things are stacked too heavily against her, though, in which case the only available option for survival is to confront the danger rather than flee.

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• '90s Anti-Hero: She's a badass Dark Action Girl with misanthropic tendencies, morally ambiguous, violent, and a Ms. Fanservice (her later outfit even bares her midriff).
• Action Bomb: Her "heart bomb" will explode as soon as her heart stops.
• Action Fashionista: Played with, her initial outfit is very gothic lolita gimmicky, but post-Heel–Face Turn she wears far darker outfits that make her look far more impressive. She even makes a nurse outfit look awesome.
• Action Mom: In the Redial OVA, Minene is now a happy mother of twins and shows she's still a badass when she puts up a fight against 3rd World Mur Mur.
• Adaptation Expansion: The anime imports parts of her Mosiac side-story.
• An Arm and a Leg: She loses her right arm later in the story.
• Anti-Hero: She's willing to do anything to get the victory, often in explosive ways.
• Arch-Enemy: She becomes this to Mur Mur in the final battle, with them duking it out while Yuki and Yuno have their own conflict.
• Babies Ever After: The epilogue reveals Minene had children with 3rd-world Nishijima. As a bonus, her babies (most likely twins) have superpowers due to her receiving some of Deus' powers.
• Back for the Finale: Presumed dead after the fight with 11th, she returns in the final arc after receiving half of Deus' power.
• Badass Adorable: She has her moments. Defeating Hiyama in a cosplay dress counts.
• Badass and Child Duo: She occasionally teams up with the 14-year-old Yukiteru, especially during the Final Battle.
• Badass Biker: In her first appearance, she drives a motorcycle to escape.
• Badass in Distress: She's briefly captured by the Twelfth.
• Badass Long Robe: She wears a black robe after returning with Deus' powers.
• Badass Transplant: The white arm that Deus' power gave her.
• Better to Die than Be Killed: She decides to break her own diary rather than succumbing to her wounds. But Deus intervenes, saving her life and turning her into a Spanner in the Works.
• Big Ol' Eyebrows: More noticeable in the anime; they're particularly thick.
• Big Sister Mentor: To Yukiteru, when they're not literally trying to kill each other.
• Blood Knight: She initially is all for violence.
• Boyish Short Hair: She has cut her hair short in the Redial OVA, fitting her badass Dark Action Girl character better than her former hairstyle.
• Broken Bird: She's cynical and jaded as a result of her Dark and Troubled Past and is usually dealing with emotional traumas.
• Byronic Hero: Minene is an attractive terrorist bomber who is vicious, cynical, and ruthless due to a tragic childhood. Despite her brutal actions, she's far from completely evil since she gets plenty of sympathetic moments and comes around to help the protagonist several times.
• Came Back Strong: After attempting a sacrifice, Deus saves her and grants her half of his power. She is presumed dead until she later returns with her new power.
• Changed My Mind, Kid: When Yukiteru and Yuno are stuck trying to get into a vault that's guarding Eleventh, deciding to avenge Nishijima instead. She changes her mind again to perform a Heroic Sacrifice.
• Character Development: She slowly becomes much more heroic as the game goes on, although some of this overlaps with Characterization Marches On, as much of her initial personality seems downright incompatible with how she's later characterized.
• Cleavage Window: In her usual outfit has a gap in the chest area that shows off some cleavage.
• Cool Big Sis: Becomes like one to Yukiteru, eventually. And also to 3rd-world Yuno in "Redial".
• Cool Bike: Owns at least two.
• Cop Killer: Minene killed Natsuko Oshima in Future Diary: Mosaic and disguised herself as her to fool the rest of the police protecting a VIP.
• Crazy Survivalist: Proven in her very first appearance by pulling a motorcycle out of hammerspace to make her escape. And enhanced by her "Escape Diary", of course, which tells her just what crazy preparations to make.
• Curtains Match the Window: Purple hair and eyes.
• Cynicism Catalyst: Losing her parents in a religious struggle in the middle east and having to fend for herself in a place where she didn't even know the language made Minene the cynical terrorist she is today.
• Dark Action Girl: She's ruthless, sociopathic and usually dresses in dark clothes, and very much capable of holding her own in a fight. However, she ends up coming around, for the most part.
• Dark and Troubled Past: Minene lost her parents when she was eight during a conflict caused by religious extremists and was forced to live a brutal life as a street rat.
• Dark Is Evil: Appearance-wise, although her name's meanings have connotations with light.
• Dating Catwoman: She's a wanted terrorist who gets a short romance with the policeman Nishijima until he dies trying to protect her. In the epilogue, she ends up Happily Married to his 3rd-world counterpart.
• Dead Man Switch: Uses one of these when she holds up a school, derailing an attempt to snipe her because it's attached to a bomb.
• Dead Person Impersonation: She killed a rookie police officer and took her place so she could get close to her target.
• A Death in the Limelight: Subverted. Volume 9 of the manga and episode 20 of the anime put heavy focus on Minene, and she seemingly dies in a sacrifice in the following volume/episode; however, she later turns out to be still alive.
• Deceased Parents Are the Best: She lost her parents in a religious struggle. We never really see Minene's fond memories of them, but it appears they were Good Parents who loved her and she does remember them fondly one moment before trying to sacrifice herself.
• Determinator: One of the longest-lasting players in the survival game because she refuses to lie down and die. Deus picked her to ensure the game ran its course smoothly for a reason.
• Divine Intervention: The only reason why she survives to the end is because Deus saves her when she's eliminated from the Survival Game and gives her some of his power.
• Elegant Gothic Lolita: She wears a lavender-colored gothic lolita-styled dress in her introduction. She drops it for more subtle wear in her next appearances.
• Escape Artist: Her "Escape Diary" specializes in giving Minene instructions of how to survive and escape whatever mess she finds herself in.
• Even Evil Has Standards: While she lacks qualms about most of the horrible crimes she commits, Yuno's madness and what she ultimately intends to do clearly disturbs ever her. Although this only occurs late in the game - before she learned all the details, she actually found Yuno's psychopathy an admirable quality.
• Evil Is Hammy: In her debut when she attacks the school, she really hams it up, especially when she yells into the megaphone. As time goes on and she begins to change, her hamminess diminishes as well.
• Evil Parents Want Good Kids: For all of Minene's terrorism, she seems to make a decent stay-at-home mom.
• Evil Stole My Faith: In the first chapter of Mosaic, she states that there is no God and that praying to him and relying on his help in life is stupid. It's also strongly implied that she became atheist because she lost her parents as a child; as she reveals her atheism a flashback is shown to her crying next to the bodies of her parents. At the end of that chapter, she meets the God of her universe and becomes Nay-Theist instead.
• Expository Hairstyle Change: Has shoulder-length hair in the Redial OVA. It matches Nishijima's, in fact.
• Eyepatch of Power: After being subjected to Eye Scream by the First and the Twelfth, she starts wearing an eyepatch to hide her missing eye.
• Far East Asian Terrorists: A Japanese terrorist who spent an early part of her life fighting in the Middle East.
• Fire-Forged Friends: With Yukiteru, later referring to him by his first name.
• Flight: One of the powers that Deus bequeathed her with.
• Foil: To Yukiteru. At first, she is an Evil Counterpart to Yuki, representing the worst possibility of what he might grow into. But later the line gets blurred as she gradually begins becoming more honorable while Yuki begins sliding down the slippery slope. By the end, they finally meet in the middle and work together to save 3rd-world Yuno from 1st-world Yuno.
• For the Evulz: Early in the series, she takes more sadistic delight and needless cruelty in her killing than she later does.
• Freudian Excuse: Minene developed a hatred towards God and religion as a whole because she lost her parents to religious extremists.
• Gadgeteer Genius: Her bombs are all handmade.
• Godiva Hair: When captured by the Twelfth, she's stripped and chained to a wall, with only her hair covering her breasts.
• Gold and White Are Divine: In addition to the white arm that Deus' power gave her, the anime also gives her a golden eyepatch.
• Good Is Not Nice: Even after her Heel–Face Turn, she's still a jerk, but she looks out for Yuki throughout the game.
• Graceful Loser: She never seems to be angry at Yuki for stabbing out her eye until he uses Nishijima as bait, which ends up killing him. Even after Yuki shoots her, she decides to help him out by trying to bomb the vault door. When she's saved by Deus, she once again comes to his assistance.
• Guile Heroine: Relies on her strategic planning and trickery, and constantly has a means of escape in case her plan falls through.
• The Gunslinger: While she prefers the grenade, she's no slouch with a gun.
• Handicapped Badass: She loses her left eye and later her right hand yet still remains badass to the end.
• Happily Married: After moving to the 3rd World, Minene found that timeline's Nishijima and has children with him. She's now happier than she has ever been, even turning down the chance to become god because nothing can be better to her than her married life with Nishijima.
• Heartbroken Badass: Nishijima dies protecting her, but Minene stays as badass as ever until the end of the Survival Game.
• Heel–Face Turn: She is introduced blowing up half of a school full of innocent children just so that she can kill Yuki and Kurusu. After a lot of Character Development, she becomes a more heroic character and Yuki's ally and mentor of-sorts.
• Heel–Face Revolving Door: Minene following her Heel–Face Turn, acted as the tritagonist of the series, but when Nishijima gets killed due to Yuki's plan, she seemingly returns acting as an antagonist again and appeared to be another tertiary Decoy Protagonist of the series to be somewhat Evil All Along not unlike Kurusu, forcing Yuki to shoot her in self-defense. Then she turned out to be Not Quite Dead and eventually performs a Heroic Sacrifice to help out Yuki again. After being absent in the following episode, she once again appears in the next, now firmly on Yuki's side.
• Hidden Depths: She has self-reliance issues and has more of an honorable side to her than her initial portrayal suggests.
• Hospital Hottie: She looks good when disguised as a nurse.
• Hot Goddess: She's one of the hottest girls in the series and after being given half of Deus's powers, she counts as a demigoddess.
• Housewife: She becomes a stay-at-home mom after marrying 3rd-world Nishijima.
• Image Song: "Reject" and "Brilliant Imitation".
• Impersonating an Officer: In Mosaic, she assumes the identity of a police officer she killed in order to get close to her target, who is under police protection.
• Intergenerational Friendship: She develops a soft spot for the teenage boy Yukiteru, almost seeing him as a little brother and eventually becomes his most important ally in the final conflict.
• I Was Just Passing Through: Passes off several of her kind actions as this, like rescuing Yukiteru and Yuno from Reisuke's gas trap and informing Kurusu of his son's condition when she told Yukiteru that she was just going to wander off and do her own thing in the 3rd-world.
• Karma Houdini: Her body count probably numbers in the hundreds if not thousands, seeing as before the main story started she attacked not only clergymen but also religious facilities; Twelfth does mention in Mosaic that she killed a lot of believers in her attacks. She also murdered an innocent rookie detective to steal her identity in Mosaic, and there's also her school bombing early in the main story. As the 2nd-world where she did all of this ultimately gets destroyed, she ends up getting away with this, escaping from the 2nd-world and presumably living Happily Ever After with Nishijima in the 3rd-world. And on top of that, according to Redial, she got to keep her God powers, since it shows her flying in the sky with her kids.
• Kill the God: Her eventual goal once she wins the game. Though she wouldn't have to work hard on that goal since Deus is dying anyways. What's more, it's lightly hinted that when Deus transferred half of his remaining power to Minene, it actually sped up his coming death, leading to the world to start collapsing earlier than was expected. She ended up achieving her goal, in a way.
• The Lad-ette: She's a macho hardass and trash talker.
• Lamarck Was Right: Her children inherit her divine powers somehow, even though she got them through a Badass Transplant.
• Large Ham: In both languages, her voice actress tends to devour the scenery when Minene is in full psycho-killer mode.
• Licked by the Dog: She seems to be liked by a group of wild squirrels that follow her around.
• Lovable Rogue: She's an infamous terrorist who's introduced blowing up an entire school full of people, but she later shows a hidden noble and soft side.
• Love Redeems: Nishijima was the major motivation for her Heel–Face Turn. In the end, she gives up terrorism to marry 3rd-world Nishijima.
• Love Transcends Spacetime: Nishijima's love for her carries over to the 3rd-world where, during the final battle, he finds and recognizes her and wonders if they met. Two years later they're married and have kids together.
• Mad Bomber: She bombs churches and assassinates religious figures.
• Master of Disguise: She is able to fool people even if she's just wearing a nurse outfit.
• Ms. Fanservice: She's one of the hottest women in the series and is shown in a few cosplay outfits like Elegant Gothic Lolita and a nurse uniform.
• Nay-Theist: She's fighting to gain the powers of a god, yet refuses to acknowledge the very god who gave her the Diary.
• Never Found the Body: We were led to believe she was completely obliterated by her heart bomb in the bank vault. It was later revealed that Deus had secretly pulled her out just before the bomb exploded, and in addition, the anime shows the explosion was caused by a Portal Cut when her bomb was suddenly disconnected from her just as she was being pulled to safety.
• Noble Demon: She is a terrorist and not above blowing up a middle school full of kids, but she has her own honorable side.
• Normally, I Would Be Dead Now: Minene already had her eye pierced in her introduction, but as soon as the story starts focusing on her again, she takes some punishment. She narrowly survives a claymore that ends up blowing off her hand and causes her to lose a lot of blood, then after chasing Yukiteru down she manages to corner him only to hesitate and give him the opportunity to shoot her in the abdomen, and she bleeds out quite a lot on the floor. Then after Yukiteru and Yuno leave her for dead to try to deal with Eleventh, Minene managed to get back up and walks up behind them to offer to sacrifice herself so they can get inside the safe. It takes her to break her own diary before she actually dies. And Deus even saves her from that, too. Oh yeah, and the new arm that she gets via his powers? Ripped off by Mur Mur. And even after that she still survives.
• No Social Skills: She doesn't know what exactly marriage is, at least.
• No Sympathy: She calls Yuki out after he says he wants to become god so he can bring his parents back to life, saying that with such a reason anyone would want to be god while there are people like her who have suffered much more.
• "Not So Different" Remark: Surprisingly, she says this to Yukiteru. When she saw him running through her minefield, choking on poisonous gas, or even the look on his face when he lost his parents, she was reminded of her own weakness in her childhood and admitted that she had a soft spot for him.
  • She also gets a bit of this with the Fifth in Mosaic when she asks if he's going to take revenge for his parents. It's probably why she was so intent on returning his dolls.
• Not Too Dead to Save the Day: We find out that she is still alive when she shows up to save Yuki as he is falling.
• Official Couple: She's shown to have married 3rd-world Nishijima in the Distant Finale. Much to the chagrin of her husband, he still has to catch and arrest her 3rd-world self, who is still a terrorist.
• Orphan's Ordeal: She appears to be haunted by the memory of crying over her dead parents.
• Poisonous Captive: Despite being captured by the Twelfth, she misses no chance to mock him when his plans go awry.
• Redemption Earns Life: Minene, one of the few diary holders to pull a Heel–Face Turn, gets to live, even though the Survival Game was quite specifically set up so only one participant could survive.
• Reflectionless Useless Eyes: Her injured left eye is depicted as having a lusterless, crumpled iris.
• Refusing Paradise: In the Redial OVA, Deus offers Minene to become the god of the 3rd-world, but Minene declines the offer since she's satisfied with her current life as 3rd-world Nishijima's wife.
• Retired Badass: At the end of the series, with the Survival Game being over, Minene marries Nishijima and is now living peacefully with him in the 3rd-world.
• Retired Outlaw: In the finale, she has given up terrorism to live with 3rd-world Nishijima, but her other terrorist-bomber self is still running around there.
• Satisfied Street Rat: She lost her parents in a religious struggle in the middle east and had to fend for herself in a place where she didn't even know the language, becoming a hardened badass who would eventually target religious buildings and figures in her terrorist bombings.
• Semi-Divine: She's given half of Deus' powers. While still partially human, she has godly powers that allow her to fight Yuno and Mur Mur.
• Senseless Sacrifice: Subverted. Just as Ninth had broken her diary, Deus saved her from her vault explosion. The explosion itself failed to breach the vault as she had hoped, though.
• Shameful Strip: After being captured by the Twelfth, he strips her down to her panties and chains her to a wall.
• Single Woman Seeks Good Man: She falls for the policeman Nishijima who is the Nice Guy of the series.
  Minene: Nishijima is the one man who ever promised to make me happy.
• Slasher Smile: Her default expression, though she keeps a much cooler head than most examples.
• Sociopathic Hero: In a very different way from Yuno in that she can also be merciless and have little care for anyone except herself and the guy she likes, but not nearly as monstrously manipulative as the latter, being upfront about her intentions to the point of bluntness.
• Sour Outside, Sad Inside: Minene may be a cruel and bloodthirsty terrorist, but she's still haunted by the memory of her sad and helpless child self crying over the death of her parents.
• Sour Supporter: In the final battle, she isn't very supportive about Yukiteru wanting to save Yuno and everyone else in the 3rd-world, but helps him anyway.
• Spanner in the Works: Becomes the most prominent one near the end of the story, through Deus. Her continued survival throughout the game causes Deus to deem her reliable enough to leave some of his power inside her. After she dies for the first time, she manages to pull a Big Damn Heroes moment to save Yukiteru from the collapsing 2nd-world and uses Deus' powers to follow Yuno back in time. She then leaves Yukiteru to make a phone call to Kurusu, telling him about his son's future condition and advising him to seek help for it before it's too late. Her actions caused a domino effect that allowed all of the other Diary Holders to prevent many of their personal tragedies and achieve a happy ending (except Third, although at least he gets prison instead of death).
• Straw Nihilist: She outright doesn't believe in God at least till Deus showed up, and she is jaded by her experiences.
• Third-Person Person: Occasionally refers to herself as "Minene-sama" because she believes she is just that great. She doesn't do it as often as the story progresses, but whenever she gets serious against her opponents it tends to show up.
• Throw Down the Bomblet: Completely in sync with her reputation as terrorist.
• Tomboy with a Girly Streak: Minene is a badass terrorist who says she doesn't waste her time in girly stuff, but she likes Elegant Gothic Lolita dresses.
• Took a Level in Badass: When you think Minene is already badass enough, wait to see her return with half of Deus's powers.
• Touched by Vorlons: She receives half of Deus's remaining power when he notices Mur Mur is unfairly influencing the game to go in Yuno's favor. Deus was hoping that she would use his power to help set the game back on track, and while she does try to honor his request, Yukiteru's decision to Screw Destiny and help the 3rd-world's Yuno makes her change course.
• Tritagonist: The third most prominent protagonist after Yuki and Yuno, though it might be deliberate.
• Tsundere: Harsh type. Minene is an abrasive and fierce woman because of the environment she grew up in, but she shows a softer side as she grows to care about Nishijima and Yukiteru.
• The Unfettered: In a different way than Yuno, in that she's more pragmatic about doing anything she can to achieve her objective than being vilely manipulative as in the case of the latter. She also becomes less brutal as the story goes on.
• Unscrupulous Hero: She becomes Yukiteru's ally later on, making her a good guy of sorts, but she's still a criminal and doesn't really care for anything other than helping the people she has become fond of.
• Used to Be a Sweet Kid: Flashbacks show she was a normal child until her parents died and she had to become a terrorist to survive.
• Villain Antagonist: Initially. She blows up half of a school full of innocent children just so that she can kill Yuki and Kurusu. In another work, she wouldn't be out of place as a "Die Hard" on an X villainess.
• Villainesses Want Heroes: Inverted, as the policeman Nishijima is the one who actively pursues the terrorist Minene.
• Villain Protagonist: After joining Yukiteru. Don't forget that she still committed crimes which resulted in hundreds of casualties. Even innocent children.
• Visual Development: So much that she's unrecognizable from her first to later appearances.
• Wild Card: Especially in the final battle, she's an outside player that not even Mur Mur saw coming.
• Would Hurt a Child: Introduced blowing up half of a school full of innocent children.
• You Remind Me of X: To Yukiteru.

Karyuudo Tsukishima - The Tenth

Voiced by: Hirokazu Hiramatsu (JP), Mark Stoddard (EN)

A man who loves his dogs more than anything else. His "Breeder's Diary" lets him check up on and control his army of dogs, which he can command to attack his enemies.

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• Accent Slip-Up: He speaks standard Japanese most of the time, but he slips into Kansai accent during his last conversation with his daughter.
• Better with Non-Human Company: He cares a lot more for his dogs than other humans, including his own family.
• Face Death with Dignity: Before getting killed by the Fourth, he calmly says his last words and gives a warning to Yukiteru about being wary of nice people.
• Gourmet Pet Food: Gives his dogs expensive steak and wine, while he himself dines on cup noodles.
• Graceful Loser: He accepts his defeat and even encourages Hinata not to end up like him.
• Image Song: The only one of the 12 Diary users without one.
• Man of Wealth and Taste: He's a wealthy man who always wears formal clothing and always has only the finest food...for his dogs.
• No Name Given: His real name isn't revealed until after his death.
• Non-Action Guy: He uses his dogs and his own daughter to fight on his behalf.
• Parental Neglect: He cares more for his dogs than for his child.
• Right-Hand Attack Dog: He commands squads of attack dogs.
• Sound-Only Death: The audience only hears Karyuudo being shot by Kurusu.
• The Unfought: The only diary holder that Yukiteru and Yuno never directly confronted.
• Wine Is Classy: He has prized 30-year wine which he serves to his dogs.

John Bacchus - The Eleventh

Voiced by: Takaya Hashi (JP), Christopher Corey Smith (EN)

The mayor of Sakurami and the one who suggested the idea of the Future Diary. His diary, "The Watcher", can spy on the contents of all other Future Diaries, making him one of the most formidable Diary Holders. His Evil Plan is to link up the Eighth's Diary to the city's main server, turning every phone into a "Child Diary" and giving him nigh-omniscience.

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• Aesop Amnesia: In the 3rd-world, he cancels the game after learning of his death, understanding the risk is too high, even when the game is stacked in his favor... And then he's shown still pestering Deus with other game ideas, also highly stacked in his favor.
• All Your Powers Combined: He has the power to locate the other Diary users at all times he planned to take it a step further, using Eighth's power to create omnipotence completed with an endless supply of replaceable Child Diary users.
• Antagonist Abilities: Of a very special All Your Powers Combined/Sinister Surveillance variety. He can watch the predictions of other diary holders as well as know their locations. This gives him a massive edge over all the other diaries.
• Bad Boss: He shoots his secretary, Ryuji Kurosaki, before entering the vault.
• Bald of Authority: He's the mayor of Sakurami City and doesn't appear to have any hair.
• Bald of Evil: He's a bald Nazi-esque liked minded thinker.
• Bastardly Speech: His debut scene is one of these. He feigns concern for 8th's orphans and asks the city council to shut the orphanage down due to "terrorist attacks" from Yuki and Yuno. In actuality it was the orphans (including Marco and Ai) who attacked first, and he just wants to shut the orphanage down to force 8th out into the open.
• Big Bad Wannabe: He would have been the Big Bad if it weren't for Yuno and MurMur being Yukiteru's final enemies in the Survival Game.
• Big Brother Is Watching: He's the mayor of the city, and he can spy on all other Diary Holders.
• Butt-Monkey: Reduced to this in the Redial OVA. Mur Mur really seems to like shoving him down holes.
• The Chessmaster: Due to his Diary knowing the other Diary users' actions at all times, he plans accordingly to all of them.
• Corrupt Politician: A power-hungry mayor who abuses his authority to pursue his enemies.
• Crazy-Prepared: Hides behind two vault doors, one of which requires a password, and the other a retinal scanner.
• Did You Just Scam Cthulhu?: According to Deus, John promised that he would use the Future Diaries for the good of humanity if he agreed to help him create them. While John may believe he is indeed working towards a greater purpose, Deus doesn't seem too thrilled when he learns 11th's true intentions. Also, John clearly used his position as co-creator of the diaries to his advantage by making his diary one of the best. In the 3rd world, Deus seems to realize that John is trying to manipulate him, so he turns down all of the Mayor's proposals for a new game.
• Didn't See That Coming: The vault was only able to be opened by himself and the Gasais. Yuno's parents were dead, and Yuno herself was determined to be the third corpse in her house. This meant that the girl claiming to be Yuno had to be an imposter, as far as John knew. So hiding in the vault should have been a foolproof plan, right? Not when you're dealing with a time-traveling goddess like the first-world Yuno.
• Dirty Old Man: The Watcher keeps tabs on every diary in the city, but there are lots of Future Diaries, especially after he activates HOLON III, so he can only look at a few diaries at a time. At one point, he is shown looking at five tabs. Four of them, namely Yukiteru's, Yuno's, Minene's, and Hinata's make sense, but then the fifth tab just so happens to be Mao's diary... which records the size of Hinata's breasts. Murmur also states in the omake of Episode 21 that the name of John's diary sounds perverted, much to his annoyance.
• Disc-One Final Boss: After the revelation that he created the Future Diaries, it seems like he's going to be the final enemy the protagonists have to face, but Yuno kills him with ease and the game continues as she goes back in time.
• Even Evil Has Standards: John proposes to Deus that the battle royale in the 3rd-world should be canceled not only because he learns that in the 2nd-world the game resulted in his death, but also the realization that the winner most likely would not try to save the world. This is true to certain levels: Yukiteru would've grieved for millennia in a world of nothingness; Yuno've would just leapt back in time and created an eternal loop of battle royales; Tsubaki (hypothetically speaking) would've just destroyed the world into nothingness; and Deus helps us what would've happened if people like Minene or Takao won the battle royale.
• Four Eyes, Zero Soul: John wears a pair of glasses and easily one of the most ruthless Diary Holders who has no problem killing his secretary.
• Hoist by His Own Petard: Bacchus hides himself in a vault in the bank once run by Yuno's parents, under the very reasonable belief that since the real Yuno has been confirmed dead, the impostor claiming to be Yuno would not be able to use the retinal scanner to get in. It turns out the impostor is the real Yuno from an alternate timeline, and he has nowhere to run.
• Image Song: "Herrscher".
• Know When to Fold 'Em: He cancels the entire game in the 3rd-world after realizing that he died because of it in the 2nd-world.
• Large and in Charge: One of the tallest characters in the series, plus having one of the strongest diaries to back up his boasts.
• A Nazi by Any Other Name: His ultimate goal is to use the power of Future Diaries to turn the people of Sakurami into a master race.
• Odd Name Out: His Future Diary is named The Watcher which does not follow the naming conventions of the others like the Case Diary or the Escape Diary. This is because it was one of the five prototype Future Diaries developed prior to the Survival Game, and it matches the names of that group (e.g. The Radar, The Searcher).
• Off with His Head!: Decapitated by Yuno in the manga (he's shot in the head by her in the anime).
• Official Couple: In the last episode, Bacchus and Kamado are unambiguously shown to be a couple in the 3rd-world. The Redial manga reveals they got married.
• Orcus on His Throne: After HOLON III is activated, he spends most of his time sitting at a desk or chair while monitoring the enemy with the Watcher.
• Pet the Dog: He acts much more gentlemanly towards Kamado than towards other characters. In the manga after she undresses to reveal where she hid her Future Diary, he even gives her his own coat so she wouldn't feel uneasy.
• Pragmatic Villainy: In the 3rd-world, he convinces Deus to cancel the Survival Game and the creation of Future Diaries not because he has a change of heart, but because he learns that in the 2nd-world the game resulted in his death despite stacking the deck in his favor.
• Scary Shiny Glasses: Has these on occasion; perhaps the most notable instance is when he's explaining his Evil Plan.
• Screw the Rules, I Make Them!: It's eventually revealed that Bacchus help to create the rules of the game. So naturally, it's convenient that he would also gift himself with the most overpowered of the diaries.
• Smug Snake: Very condescending towards First and Ninth in their attempts to reach him inside the vault.
• Superpower Lottery: "The Watcher" hit the absolute jackpot, mostly because he was the one to suggest the game and was therefore able to rig the rules in his own favor.
• Super Prototype: Unlike the other Future Diaries used in the Survival Game which are tailored to their owner but based on one of a handful of prototypes developed prior to the series, The Watcher IS one of the five prototypes.
• This Cannot Be!: He didn't believe that Yuno would be able to open the vault he was in. The only ones who could open it were the Gasai family and Yuno was supposed to be an impostor since the third corpse in her house was revealed via DNA testing to be the "real" Yuno Gasai.
• Uncle Pennybags: To the Eighth's orphanage in the 3rd-world.
• Undisclosed Funds: Rich enough to have his own private army so to speak, a cellphone signal jammer installed in his own car as a precaution against the Eighth's Child Diary owners, and finally his own supercomputer which is said to be the third greatest in processing power.
• Villain with Good Publicity: Actually contributes to his downfall.
• You Have Failed Me: He orders his men to kill Kurou after the latter fails to kill Yuki by destroying his phone.
• You Have Outlived Your Usefulness: John kills his own secretary to stop Yukiteru's Future Diary from probing for more information and drastically changing the future.

Yomotsu Hirasaka - The Twelfth

Voiced by: Yoshihisa Kawahara (JP), Ian Sinclair (EN)

A blind man who wants to be a superhero. His "Justice Diary" is an audio recorder that warns him of acts of "injustice" before they occur. It also gives him some sort of hypnosis power. While he claims to be a "Hero of Justice", his actions mark him more as a crazed vigilante.

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• All Crimes Are Equal: His diary records both littering and murder.
• All of the Other Reindeer: Assuming his backstory shown in the Mur Mur segment at the end of Episode 5 is canon, before he got his Future Diary his attempts at being a superhero and helping others resulted in people mocking him and throwing rocks at him if he was lucky, or mistaking him for a criminal and arresting him if he wasn't.
• Armor-Piercing Question: In the second chapter of Mosaic, he asks Minene why she hates God so much, and after getting a weak response, he then asks what happens after she kills God. He then points out that if she takes his place after killing him, then she would be God herself. Minene can't respond, and Yomotsu tells her that she's just a person who hates the world because of the hardships she had to suffer.
• Big "NO!": Cries this in the Redial OVA after Yuno, Akise and the other kids criticize Twelfth, horrified at their "misunderstandings."
• Black-and-White Insanity: Believes quite strongly that the side that wins is the "good guys" while the losers are the "bad guys".
• Blind Seer: Played for laughs, especially with the whole Super Sentai deal.
• Chewing the Scenery: As his Hero self.
• Clark Kenting: He runs a merchandise shop for his hero mode in the Redial OVA.
• The Cuckoo Lander Was Right: Tsubaki was planning on deceiving Yukiteru and Yuno the entire time. Boy, was he right in believing that the cult was evil.
• Disability Superpower: He's blind, so he gets enhanced hearing and hypnosis powers. Yuno Gasai uses this to identify and kill him.
• Disproportionate Retribution: He is perfectly willing to violently punish people for crimes as minor as littering.
• Doppelgänger Spin: Does this with some brainwashed servants of Sixth, disguising them as himself while maintaining the sentai motif
• Eerie Pale-Skinned Brunette: Without his mask, which isn't clearly seen till the OVA.
• Evil Sounds Deep: Inverted in the Japanese version, when going into his Hero mode his voice becomes more shrill and nasally. Played straight and justified in the dub.
• The Faceless: He likes to wear a mask, and his face is never clearly shown until the last episode of the anime and the Redial OVA.
• Expy: Arguably a Lighter and Softer Version of Satoru Tojo and Hideyuki Kagawa
• For Great Justice: Criminals ^note and littering are nothing against the greater good.
• The Ham Squad: He brainwashes four other people to act the way he does in an effort to make it hard to determine which one is the real deal, and he does fight alongside these people.
• Henshin Hero: Played either for laughs or very off putting, since his costume face is done realistically ^note  undressing and redressing.
• Hero Antagonist: He's a Heroic Wannabe, but also subverted when he goes back and forth between a heroic and villainous type of Vigilante Man.
• Heroic Sacrifice: Attempts one after learning he has a Dead End to take out Tsubaki but fails when he attacks Yuki, Yuno, and Tsubaki; Yuno slashes his throat with an axe. However, this may have been intentional since Yomotsu opened Yuki's mind to the possibility Tsubaki was misleading him — she was.
• Heroic Wannabe: While he tries to do good deeds, he doesn't do anything noticeably heroic till he captures Third.
• Hero with Bad Publicity: People understandably either view him as suspicious or a joke.
• Image Song: "Justice Rangers GO 12th!".
• Justice Will Prevail: Believes in this philosophy. 3rd-world Yomotsu and Tsubaki end up turning the Omekata cult into the Cult of Justice in the Redial manga.
• Knight Templar: Littering and murder are crimes that deserve equal punishment.
• Large Ham: Especially in his costumed form.
• Limp and Livid: Is very lean, which is very noticeable in his Hero state.
• Mind Control: One of his powers...somehow.
• Shout-Out: To Kamen Rider and Super Sentai.
  • His mask has a symbol very similar to that of one in the Code Lyoko series.
• Spandex, Latex, or Leather: His comical superhero outfit consists of a full-body spandex suit with a sphere-like mask.
• Token Good Teammate: He seems to be the only diary holder who truly wants to do "heroic" deeds, as opposed to the other diary holders who were mostly selfish or neutral.
• Transformation Sequence: His "transformation" sequence (which is simply him putting on the different articles of his costume and screeching "HENSHIIIN" the entire time) falls somewhere between hilarious and disturbing...though in the dub it's clearly the former.
• Vigilante Man: Goes back and forth between a heroic and villainous type.
• White Mask of Doom: A round bag with a rope tied around it.

Azami Kirisaki - The Thirteenth

Voiced by: Yuu Asakawa (JP)

The thirteenth diary holder who exclusively appears in the video game Future Diary: The 13th Diary Owner. Not much is known about her, but she is a school student who wears a yellow raincoat. Her Future Diary is a video diary. Her little sister Kasumi is in hospital after being attacked by Takao Hiyama.

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• Big Sister Instinct: Her entire motivation for entering the game is to get vengeance on her sisters' attacker, Takao and use the powers of god to heal her little sister.
• Camera Fiend: Her diary records the future through video images.
• Canon Foreigner: Only appears in the video game and not in the anime or manga proper.
• In the Hood: Her head is covered by her raincoat's hood.

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