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Characters / Rokujyouma no Shinryakusha!? - Main Characters

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    In General 
The main characters of the series.
  • Battle Harem: Very much so. Each of the characters has high level combat capabilities and can kick your ass. As a group...
  • Color-Coded Wizardry: All of the nine girls each represent a color that's quite fitting with their personality and abilities. This only appears when they fuse and when at least two girls fuse, they instead form the Goddess of Dawn. It's also used as an accent color on their Satomi Knights uniforms.
    • Red - Theia, being the one who focuses most on offense with the Blue Knight.
    • Orange - Clan, due to her skill as an inventor and can cover her appearance using her inventions.
    • Yellow - Ruth, the reinforcement and intelligence group.
    • Green - Kiriha, the most intelligent of the girls and the strategist, she manages to out predict Dark Green, who can use precognition magic, during their first fight.
    • Blue - Yurika, the one who uses healing magic. Summoning acid and poison clouds also falls under this.
    • Indigo - Maki, the previous Dark Navy and mind manipulator.
    • Purple - Sanae, the spiritual energy expert.
    • White - Alaia/Harumi, the Goddess' avatar and the bearer of Signaltin.
    • Black - Shizuka, martial arts expert and host of Dragon King Alunaya.
  • Decomposite Character: Invoked. Each invader represents a part of Nalfa Laren, from their personalities to their abilities, and even their insecurities.
  • Fire-Forged Friends: With the exception of Shizuka and Harumi, Koutaro and the others' first interactions are this.
  • Laser-Guided Amnesia: All of them lost their memories of the events in volume 29. Though it's by their own accord.
  • Magic Knight: Lampshaded in Volume 30
  • True Companions: They eventually become this.

    Koutarou Satomi 

Koutaro Satomi

Voiced by: Yuichi Nakamura

A high schooler who inhabits Room 106 of Corona House due to its cheap monthly rent of 5,000 yen.

  • Accidental Pervert: Finds his head, and then his hands, somewhere very unfortunate when Theiamillis comes through the wall for the first time.
  • Big Damn Heroes: As befitting the Knight in Shining Armor, he gets lots of these. When he presents Theia with the scoreboard for the room competition and swears allegiance to her right before she has to go home is probably one of the most romantic scenes in the whole series.
  • Been There, Shaped History: Due to Time Travel shenanigans with Clan, he just happens to be The boy Kiriha fell in love with as a child, the reason Maki became Dark Navy, the inspiration for Theiamillis' ship the Blue Knight, the actual Blue Knight, and also inspired God(dess) to create the universe.
  • Book Dumb: At least in comparison to (most of) the girls.
  • Berserk Button: NEVER hurt those dear to him. He will go hell and back to save them and make you suffer.
  • Chaste Hero: Nine girls, two years (by the end of Vol 27), has received FOUR cheek kisses (and a couple actual ones), still single.
  • Chick Magnet: Unarguably the only person to attract a ghost, two magical girls, a mole person, a landlady with a dragon, FOUR princesses (two of which became empress), a jedi servant, and a senpai. And that's just counting the main heroines.
    • And heck, there's also Shiori (before being rejected), Megumi of the Sun Rangers (before moving to Daisaku) though she still caries a torch, and probably Mckenzie's little sister, Mckinley.
    • And taken way beyond if you consider the female students who are too afraid to confess to him, and his fangirls as the 'Blue Knight' (both Earthling students and the millions of millions of Forthorthians spanning from 2000 years ago to present day)
  • Commitment Issues: While he is actually fairly open about his affection for all the invaders, moving beyond being Just Friends is going to take a lot of work.
  • Determinator: One of the things that make him so knight-like in the first place. Even on the brink of death, he will still stand up in order to protect the girls.
  • Drill Sergeant Nasty: of the absolutely implacable but pleasant style, when he's helping Yurika study.
  • Dual Wielding: Does this with Saguratin and Signaltin from time to time.
  • The Gadfly: He's both on the giving (to Theia, Clan, and sometimes Harumi) and receiving (from Kiriha, Elfaria, and sometimes Shizuka and Harumi too) end.
  • Good Flaws, Bad Flaws: Due to his Dark and Troubled Past, he always notices those around him and helps them when they need it, but at the same time, tries not to depend on anyone else. This causes trouble for the girls, especially when he accidentally hurts them.
    • It manifests specifically as an absolute determination to keep his promises but with zero expectation that anyone else will keep theirs.
    • Thankfully after Theia and Kiriha calls him out on this, he has been trying to suppress his tendency to avoid getting help and be more careful on what he says.
  • Idiot Ball: Thinks the Sun Rangers in episode 10 are holding one after all five of the group show up in the same costume and have the same name, and berates them for it.
  • I Just Want to Be Normal: Would really rather live as as an Ordinary High-School Student and have a normal life. Admittedly, one with his nine girlfriends.
  • I Know Mortal Kombat: Got trained in swordsmanship as a way to rehearse playing the Blue Knight in a play, then actually had to use those skills when he became the actual Blue Knight.
  • Harem-Powered:
    • This is a very downplayed trope, played in a more practical, long-term method than usual. Satomi finds himself in situations where one of the girls in his harem teaches him some type of skill (such as swordfighting) or bestows upon him an item or skill (like a sword or armor) that slowly starts to turn him from an Ordinary High-School Student into the spitting image of the legendary Blue Knight. This alludes to the fact that Satomi is, in fact, said Blue Knight and most of the girls have some sort of connection with him.
    • Lampshaded in volume 25 after one of the girls Harumi is taken out of commission at a critical juncture which severely cuts his combat capability.
    • Taken Up to Eleven in volume 26 when all the girls take part in remaking his Infinity +1 Sword.
  • House Husband: For his dad after his mom dies. He also takes care of Clan during their time in ancient Forthorthe and takes over for the house duties when the girls are all busy creating Nana's replacement parts.
  • Knight in Shining Armor: Discussed in Episode 3 when he is helping Harumi get ready for the obstacle course and two of the invaders are discussing their relationship. He's also The Paragon of knighthood for the Forthorthe Empire.
  • Master Swordsman: He's personally trained by Theia and developed a competent level while wearing the "Blue Knight (ship)"'s armor and also using spiritual energy. But after his experiences in ancient Forthorthe, he's skilled enough to block bullets.
  • Nice Guy: Despite being skeptical of all of the girls' claims for his room, he is still willing to help them out when they have problems.
  • O.O.C. Is Serious Business: When he has a serious face, there may be a huge problem. More so if he's livid.
  • Older Than He Looks: Downplayed. After several months of travelling in the past and freezing time for 2000+ years, he doesn't look that different after disappearing.
  • Powered Armor: Theia's ship Blue Knight comes with a powered suit styled after the hero's medieval armour, which doubles as a motion control device for ship-to-ship combat. Theia initially lends it to Koutarou as his costume for the play, and later he pulls it out whenever he's expecting a serious fight. It comes with Deflector Shields and a Jet Pack, and also incorporates a gauntlet from Kiriha that can turn Koutarou's spiritual energy into fire and lightning. In volume 15 it receives a Mecha Expansion Pack in the form of the "Garb of Lord", a shoulder attachment which provides an additional barrier and point-defence system.
  • Real Men Wear Pink: Despite his talent in baseball, he chose to enter the knitting club. For reasons left unexplained, it seems to have something to do with wanting to make his current project himself. He's also a good cook which is helpful in ancient Forthorthe.
  • The Rival: While Vandarion is his arch-enemy, Elexis has a more friendly term with him, even easily putting an Enemy Mine.
  • Shut Up, Hannibal!: Punches Tayuma in episode 11 when he details his plans to kill Kiriha and blame the surface world for her death.
  • Suddenly Suitable Suitor: Thiamillis angsts about the political implications of making some nobody teenager from a backwater planet with no diplomatic relations to Forthorth her husband right up until she finds out what happened when he disappeared at the end of Vol 7.
  • Super Wrist-Gadget: After his travels with Clan, he receives a Forthortian communicator which he can use to summon his sword and armour.
  • Thanks for the Mammary: Does this to Theiamillis accidentally when she pops into his room through a portal.
  • Took a Level in Badass: Getting Theia's training gave him some steps of this, but going through the events of volume 7.5 and 8.5 definitely did this.
  • Training from Hell: Subjected to excessive "knight training" from Theiamillis in episode 7 to ensure he performs the role of the Blue Knight in the play she wrote.
  • Tranquil Fury: After Alaia and Charl are kidnapped, he acts calm as to not alarm others, but his gestures shows he's livid. A similar case happens in Volume 13 after the girls are badly injured, where his actions speak for themselves.
  • Wise Beyond Their Years: Downplayed, though it says a lot when a high-school student has experience in war, especially as a general among other experiences he gained in ancient Forthorthe.
  • Unwanted Harem:
    • Develops one right away after moving into his new apartment. Thing is, none of them are actually interested in him yet, just his living space. However, they do gradually fall in love with him as they spend more time together and he helps them out with their various issues.
    • There are intended harems inside the harem: Yurika seeks this with Sakuraba, Satomi and herself, while Theia intends to share Satomi with Ruth (and she is quite upfront about this).

    Sanae Higashihongan 

Sanae Higashihongan

Voiced by: Eri Suzuki

A ghost who haunts Room 106.

  • A-Cup Angst: Downplayed in the anime, but she's just as jealous about Kiriha's chest as Theia is.
  • Aura Vision: Capable of reading peoples' auras to judge their personalities, relationships, and how they're about to move in a fight.
  • Cute Ghost Girl: Volume one notes that she looks close to elementary school age. Calls herself adorable, no one objects.
  • Energy Bow: After her power increases, Sanae begins to favour crafting a Sacred Bow and Arrows out of spiritual energy, which she excitedly refers to as "Sanae-chan God Arrow!"
  • Haunted Fetter: Initially bound to Room 106 and unable to travel far away, she soon manages to snap her fetter out of desire to help her friends. By the end of Volume 10, Sanae considers her friendship with Koutarou more important than her desire to reunite with her parents, and her fetter has fully transferred to him. As Sanae is a powerful ghost who must continuously absorb vast amounts of Life Energy from her fetter in order to survive, this is a very bad thing for both parties.
  • Laser-Guided Amnesia: She loses her memories as a ghost (and to an extent, everything about Room 106 once she returns to her human body. Thankfully, they return
  • Next Tier Powerup: Merging with the human Sanae in Volume 11 restores her full spiritual power, which is likened to that of a minor god. This makes her spiritual attacks much stronger, as well as allowing her to imbue her power into objects.
  • No-Sell: Her attacks have no effect on sacred objects.
  • Our Ghosts Are Different: She's the result of a failed attempt to steal the life force of a powerful psychic, which inadvertently left behind a clump of energy so concentrated that it took on the original person's appearance and personality, creating an “artificial ghost”. Eventually she fuses with her human self, after which she takes the appearance of her ghost form while using astral projection.
  • Past-Life Memories: Downplayed since rather than reincarnation, it's her memories as being a ghost in Room 106 which she forgot but later recovers.
  • Power Glow: Discussed as an indication of just how much spiritual energy she has to spare.
  • Psychic Powers: Sanae is established early on to be unusually powerful and stable for a ghost. It's later revealed that her telekinesis, Aura Vision and other powers are actually something she always had, and becoming a ghost simply helped her learn how to use them properly.
  • Split Personality: Zigzagged. After recovering her memories as a ghost in her human body, she can astral project the 'active, cheerful, ghost Sanae-chan' while the 'shy, timid, human Sanae-san' stayed in the human body. Though their/her soul is still connected.
  • Split-Personality Merge: When ghost Sanae returns to her body, she's a mixture of both personalities
  • Super Empowering: After a while of Sanae possessing Koutarou in order to share his sense of taste, they become compatible enough that Sanae can return the favour by lending him her Aura Vision. Still later she figures out how to set up "spiritual circuitry" in Koutarou's body which can function to some degree even when she's not present - this includes a lesser version of Aura Vision, as well as a form of Super Reflexes (letting him bypass his nervous system and transmit signals around his body instantly).
  • Weaksauce Weakness: Sacred objects and charms. She was later immune to Kotaro’s “Safe Family” Charm since he considers her as family.
    • She loses this weakness entirely after reuniting with her body
  • When You Coming Home, Dad?: A parental and non-work-related example. She’s waiting in Room 106 for her parents to come home again. It’s revealed that her family moved into her father's family house near a hospital to try cure her from leaking too much spiritual energy, which was was both the source of her manifestation and slowly killing her physical body (and by extension, her).
  • Vitriolic Best Buds: She had this Koutarou before making up in Volume 3.

    (Rainbow) Yurika Nijino 

Yurika Nijino

Voiced by: Nichika Omori

A clumsy Magical Girl who intends to claim Room 106 to defend it from other magical girls who may use the power the room contains for evil.

  • Adorkable: She’s a clumsy magical girl that tends to be mistaken as a cosplayer. What would you expect?
    • Even more so when realizes she developed feelings for Koutarou in Volume 12.
  • Apologizes a Lot: Tends to do this, such as when she accidentally breaks the window during her intro.
  • The Archmage: It's easy to forget, but in Folsaria she holds the highly prestigious title of Archmage (being the current "Blue" of Rainbow Heart).
  • Ascended Fangirl: She’s a big fan of Magical Girl shows and Shoujo manga. And no, she can’t properly act as the former.
  • Butt-Monkey: Especially early on in the story.
  • Character Development: As the story proceeds, she gains more confidence in herself and can make better use of her talents.
  • Cute Clumsy Girl: She's clumsy, insecure, and apologetic.
  • Establishing Character Moment: She first appears by smashing through a window with her (flying) broom crying, and crashing, resulting in some Amusing Injuries. She later introduces herself nervously and nobody believes she's a magical girl. All that's missing now is her Big Eater tendencies.
  • Expy: Supper clumsy, whiny, big eating, Book Dumb, twin tailed, Magical Girl of 'Love and Courage'. Who else could it be.
  • Fusion Dance: One of the available spells under Orange magic. Oddly enough, when she fuses with other invaders, they manifest the Goddess of Dawn rather than a person with traits from the fusees.
  • Genius Ditz: She is legitimately very, very, very good at magic (volume 19 suggesting that she reached the rank of archmage faster than anyone in history), just a wreck at everything else. Regarding school specifically, the speed with which she improves under Koutarou's Training from Hell suggests she may just be uneducated rather than Book Dumb. Kiriha suggests that it is a result of lack of focus.
  • Irony: Magical Girl Rainbow Yurika, princess of love and courage, is insecure and apologetic and has developed a specialty in poison gas and acid cloud attacks, much to her dismay.
  • Pretty Freeloader: Aside from Koutaro (and Sanae), she's also staying in Room 106 but he's the one taking care of her. That aside, she's adorably klutzy.
  • Living Emotional Crutch: Downplayed. Part of the reason Koutarou finds it so hard to believe that Yurika is a magical girl is because he's happy to have another "normal person" in Room 106, and doesn't want to see someone as timid as Yurika forced onto a battlefield.
  • Meaningful Name: Nijino means of Rainbow, she literally just translated her Folsaria name into Japanese.
  • Shipper on Deck: For Harumi x Satomi, but doesn't get why she keeps including herself with them when she imagines them together.
  • Story-Breaker Power: Lampshaded in the afterword of volume 19 - the reason Yurika has low self-confidence and an oath against using magic for personal gain is because her powers would have utterly broken the story at the point she was introduced. By the time she can show her full strength openly, the other characters have received Next Tier Powerups which help them keep up and the problems have gotten bigger than she can solve on her own.
  • Stripperific: Her Magical Girl outfit isn't that revealing, but after being tossed out of Room 106, she breaks down in tears and sobs that her outfit "doesn't cover [her] chest or butt all the way, but the Magical Land says [she] has to wear it proudly". The Uniform like her Staff belonged to her predecessor and teacher Rainbow Nana who was both shorter and "smaller" than Yurika.
  • Take Up My Sword: Yurika was a friend and supporter of the original Magical Girl, Rainbow Nana. She had to take up Nana's role after she lost her powers protecting Yurika from an ambush by Darkness Rainbow, which explains a lot of her apparent unsuitability for the job.
  • Taking the Bullet: Does this in episode 8, intercepting a spell cast by her rival Maki that was intended for Harumi. She ends up apparently paralyzed by the spell, and falls straight down after getting hit by the spell.
  • Transformation Sequence: In episode 3 right before trying to heal Harumi.
  • Zettai Ryouiki: In both her school and Magical Girl uniforms.

    Kiriha Kurano 

Kiriha Kurano

Voiced by: Masumi Tazawa

A well-endowed member of the Kurano clan, a family of oracles and spellmasters who live deep underground.

  • The Ace: She plays the perfect student to a T when she’s at school.
  • The Chief's Daughter: Why she got picked to run the invasion.
  • The Gadfly: She loves teasing people using her intellect, especially Koutaro.
  • Going Native: Mentions to Satomi about her plan to invade the surface via peaceful methods, such as helping people out with cleaning, etc. However, her real motive was to find the boy she met and fell in love with on the surface ten years back, and she didn't want to start a war which would make finding him impossible.
  • I Am Not Left-Handed: Koutarou soon realises that Kiriha is smart enough that she could have taken over Room 106 long ago, but is deliberately holding back to keep the invasion going and the radical faction from moving.
  • I Want My Beloved to Be Happy: She goes into her invasion fully aware that her First Love was most likely with someone and living his own life happily after ten years. She just wants to make sure of that and bring that chapter of her life to a close. Then she finds out who he really is...
  • Lady of War: While she's one of the weaker members of the cast and mostly relies on her haniwas to fight for her, in bigger fights she'll pull out a spiritually-enhanced naginata and join the fray herself.
  • Miko: Has the look, and comes from a clan that's mastered oracles and incantations.
  • Precocious Crush: Ten years ago, she fell in love with a boy more than twice her age. She's primarily holding back the invasion to give herself a chance to find him again and give herself some closure. In Volume 10, she finds out that the boy in question was a time-travelling Koutaro, meaning the age gap is gone, and she actually has a real chance with him.
  • Sex Sells: Kiriha attempts to do this to Satomi when he rejects her gold offer to leave the room. She then asks him how long he's able to resist, since her people have been underground for a long time. Fortunately Theiamillis showing up provides a convenient distraction.
  • She's All Grown Up: Compare the child Kii to the current Kiriha. Even Kotaro couldn’t tell ‘Kii’ was her and lampshades this.
  • Split Personality: Though not really. After finding out Kotaro was the man whom she met 10 years ago, she can shift from the 'mature Kiriha' to the 'child Kii'. This is in part due to her role as Chief's daughter.
  • The Strategist: The smartest member of the group, but also the one with the lowest personal fighting power. As the series becomes more action-oriented Kiriha increasingly finds herself in command, particularly when the heroes work alongside groups of weaker combatants. She's notoriously good at it, to the point of successfully outmaneuvering enemies who can see into the future on more than one occasion.
  • Take Over the World: What she wants to do. Ultimately subverted, as she really wants her people to live peacefully with the surface world. Unfortunately there's a faction of underworlders that really does wish for conquest - Kiriha's token invasion was merely a political maneuver intended to reduce their influence.
  • Third-Person Person: Calls herself 'Kii' as a child. Even as an adult when she acts as Kii.

    Princess Theiamillis Gre Fortorthe 

Theiamillis Gre Fortorthe

Voiced by: Maria Naganawa

The princess from the Mastir family and the seventh princess of the Holy Forthorthe Galactic Empire.

  • A-Cup Angst: She is... a bit touchy about her breast size. She is canonically the smallest invader including ghost Sanae who is described as looking like she is in elementary school. She and Koutarou have a very sweet conversation about it in Volume 12.
  • Affectionate Nickname: “Tulip” is an adorable nickname, but she misinterprets it as some insult (being an alien). Once she sees actual tulips, she realizes this and sometimes makes Koutarou use it.
  • Antiquated Linguistics: Speaks in this manner, using the archaic, feminine "warawa" to refer to herself.
  • Battle Ballgown: In volume 16 she completes the "Combat Dress" - a kind of high-tech harness with a big poofy skirt, which both allows her to fly and provides hardpoints that let her wield multiple summoned weapons at once.
  • Character Development: During her stay on Earth, she goes from a selfish Royal Brat princess who wants to capture the ryokujouma and make the others in Room 106 swear loyalty to her (albeit not without reason) to a proper princess capable of being a suitable empress that looks out for her friends. Everyone, even Theia herself, lampshades this.
  • Cute Little Fang: Sports one quite frequently in the anime usually when shes about to put the beast down on someone.
  • The Dividual: With Ruth, especially with regards to their romantic relationship with Koutarou.
  • Embarrassing Nickname: She doesn't like being called "Tulip". In Volume 10 after going to actually see them at a flower shop she asks Koutarou to call her 'Tulip' again. He agrees and gives her and Ruth a bouquet each of red tulips as their white day gifts. They each keep one preserved as a memento.
  • Gamer Chick: Her thesis, back on Forthorthe, was on the ancient history of video games and she is the most likely person to be seen actually playing them.
  • Gratuitous English: Her Blue Knight, as well as her fan club in episode 3, makes notable use of this trope by using a lot of English in their dialogue, such as "Hail to the Princess!". That said, the language is still new to her without her translation device.
  • Identical Granddaughter: Well, descendant of Princess Alaia's little sister Charl.
  • In-Series Nickname: "Theia". Also "Tulip".
  • Multi Form Balance: Her Combat Dress, introduced in volume 16, can have weapons docked to it in a number of preset configurations, four of which are known:
  • Noblewoman's Laugh: Theia has a habit of laughing in this manner to belittle others or show off her own greatness.
  • Ojou: Noble Womans Laugh with fan? Check. Devoted servant? Check. Ridiculously wealthy (private spaceship)? Check!
  • Overly Long Name: Thiamilis Gre Mastir Sagurada von Forthorthe.
  • Pretty Princess Powerhouse: Let me count the ways. Beating up the Chearleading Club, BFG, 1 kilometer long Giant Robot Spaceship. Also a really good pilot and combat commander.
  • Rapunzel Hair: Her hair is long enough to reach down her knees.
  • Royal Brat: She starts off as a haughty and arrogant princess. She gets better later on.
  • Shana Clone: Theia is a prideful and arrogant Type A Tsundere princess with a small, flat-chested body that gives her A-Cup Angst and blonde Rapunzel Hair. She initially treats Koutarou as her inferior, but like other examples, she grows out of it.
  • Small Girl, Big Gun: At the start of the series her fighting style consists mostly of summoning in a giant gun from her ship. While powerful, most of these weapons are cumbersome enough to reduce her to a living Sentry Gun, and she can't switch between them quickly. Later on she develops the Combat Dress to compensate for this weakness.
  • Super Wrist-Gadget: Wears a computer on her wrist which she uses to communicate with her ship.
  • Tiny Tyrannical Girl: Played straight at the beginning ("Hail to the Princess!!"), as the series progresses she mostly acts this way toward Koutarou as a joke and sign of affection.
  • Tsundere: A Type A. She's very harsh and haughty towards Koutarou, but since the Blue Knight play, she's becoming quite open in declaring her attraction to him.
  • Vitriolic Best Buds: As everyone lampshades, Theia and Koutarou's roughhousing is their way of displaying affection to one another.

    Ruthkhania Nye Pardomshiha 

Ruthkhania Nye Pardomshiha

Voiced by: Saori Hayami

Theia's servant and a Guardian Knight from the Pardomshiha.

  • Arranged Marriage: And the major plot driver of Volume 9
  • Attack Drones: In some fights she backs up her swordplay by micromanaging a group of drones from the Blue Knight.
  • Battle Butler: She might be serving Theia as a servant, but she’s still a knight who can kick your ass.
  • Berserk Button: Rhinoceros beetles. She’ll go berserk if she’s sees one, even if it’s a Beetle-themed superhero! She loses her memory of going berserk when she regains her senses.
  • Bodyguarding a Badass: She’s guarding Theia, who can kick ass. When not on battle, she’s the maid/servant type.
  • Laser Blade: Takes to wielding them after she starts training with Koutarou, which proves to fit her fighting style better than the heavy blades she previously used.
  • Master Swordsman: Surprisingly averted early in the series - despite Ruth being Theia's knight, complete with sword and shield, she is only an average combatant who relies more on her equipment than personal skill. In fact Theia is both more athletic and more skilled with a sword than she is, even if she rarely gets to show it off. However, Ruth takes notice of this and starts sparring with the other invaders, after which her skill improves by leaps and bounds.
    • After continuously sparring with post-Blue Knight Koutarou, she improves and when she's beetle-crazed, actually becomes better than the person who literally fought in a war as a knight.
  • Secret Keeper: After finding out that Koutarou is the Blue Knight form the legends, he convinces her not to tell Theia, as it would definitely affect her judgement.
  • Super Wrist-Gadget: Wears one of the same model as Theia's, though she uses it less often.
  • Tears of Joy: She sheds these after knowing that Koutarou's the Blue Knight.
  • Yandere: Very downplayed and Played for Laughs. She can share Kotaro with anyone, except rhinocerous beetles. Seeing even one of them can turn her to this trope (to beetles anyway).

    Harumi Sakuraba 

Harumi Sakuraba

Voiced by: Megumi Takamoto

The well-mannered president of the school knitting club, and the only member other than Koutarou.

  • Can't Stay Normal: Alaia note  warns her that if she chooses to continue with what she is doing to support Koutaru and the Invaders she will never have a normal life again. She's just fine with that.
  • Cherry Blossom Girl: Sakuraba, being an Ill Girl Yamato Nadeshiko, is the girl Koutarou is most obviously attracted to at the beginning and the reincarnation of the Legendary romantic heroine of the Holy Forthorthe Empire.
  • Ill Girl: Downplayed early on as it mostly means she isn't very athletic and needs to go to the hospital for regular checkups.
    • Becomes more severe in Volumes 23-26 because of the side effect of being the Living Battery for the legendary sword of the Forthorthe empire, Signaltin.
    • It’s later revealed that the reason she’s this is because half of Alaia’s soul is in Signaltin while the other half is in Harumi, which is similar to Alaia’s experience after releasing Signaltin. She later gets the other half and can probably live with a healthy body.
  • Irony: Alaia wished a normal life so she can love Koutaro as an equal and without politics being involved (i.e. Harumi’s life), meanwhile Harumi wants to be more like Alaia due to her closeness with Koutarou.
  • Magical Incantation: In contrast to Folsarian magic (where casters simply state the name of the spell), her Ancient Forthortian spells require her to first chant pleas for spirits to come to her aid.
  • Past-Life Memories: Of being Alaia up to when Koutarou and Signatin leave.
  • Power Dyes Your Hair: When she uses the Silver Princess’ power, her hair turns to silver.
  • Powered Armor: In volume 15 Clan invents the PAF (Power Assistance Field) to help Harumi conserve her stamina - a belt-mounted device which uses a weak skintight forcefield to assist the wearer's movement. While no match for combat-grade equipment, it makes Harumi significantly stronger and offers protection from harsh environments (even being usable as a spacesuit), and its low power consumption means she can use it all day.
  • Reincarnation: She is Alaia’s wish to be with Koutarou again. Even Clan, who’s a scientist from a futuristic planet, can’t help but think this is true
  • Reincarnation Romance: She’s the reincarnation of Alaia, who fell in love with the Blue Knight, the time traveled Koutarou.
  • Rescue Romance: The more mundane type. She develops feelings when Kotaro saves her from a student who tries to force her to date him and saves the Knitting society by joining it, which could’ve been disbanded since she was the only member. It’s his Nice Guy attitude that really made her fall for him. Being Alaia's reincarnation who was also saved by Koutaro also helps.
  • Squishy Wizard: She uses Ancient Forthorthe magic but lacks physical prowess. Justified since she has a chronic disease and her body’s not physically strong.

    Shizuka Kasagi 

Shizuka Kasagi

Voiced by: Aya Suzaki

The young landlady of Corona House as well as Koutarou's classmate.

  • Badass Normal: Even without using Alunaya’s power, she’s still a master martial artist that can kick your ass if you ever make her angry.
  • Bare-Fisted Monk: Has been training in karate as a way to deal with the loss of her parents.
  • Berserk Button: Any time damage is done to Room 106 or any other part of her building, someone is getting a beatdown. ’’Seriously’’, don’t try to damage it.
  • Birds of a Feather: She and Koutaro have very similar circumstances. They had both lost family, fought against outsiders to protect their place but are now trying to protect them. They're also given powers by others but outside having a combat talent note , they're still normal everyday Earthlings.
  • Body and Host: On the good variety. She’s the current host of Alunaya, the dragon that Kotaro saved 2000 years ago
  • Can't Stay Normal: Alunaya asks her if she wants to be stronger, he can grant her (his) strength, but she’ll give up her normal life. She accepts, since Koutaro and the others aren’t normal anyway, so she can be strong like them and they’ll still accept her.
  • The Gadfly: Very low key, third biggest tease after Kiriha and Sanae.
  • Locked Out of the Loop: She didn't know Alunaya was inside her after the reveal to Koutarou in volume 13. Though she finds out the next volume.
  • Partial Transformation: As a result of the above hosting
  • Tomboyish Ponytail: Downplayed since she isn't actually a tomboy, but she is a martial artist and physically the strongest out of the protagonists.
  • Weight Woe: The more of Alunaya's power she depletes, the heavier she becomesnote . Even knowing it's not really her weight, it still makes her uncomfortable.

    Princess Clariossa Daora Forthorthe 

Clariossa Daora Forthorthe

Voiced by: Yukari Tamura

The princess from the Schweiger family, second princess of Forthorthe and Theia's rival
  • Because You Were Nice to Me: According to her, Koutarou’s one of the few who truly understands her and despite teasing her, he cares a lot for her.
  • Chainsaw Grip BFG: Her most commonly-used weapon is one of these, in contrast to Theia's (which tend to have conventional grips or float independently).
  • Character Development: After travelling with Alaia, she realizes how immature she was and starts working to try and become an empress similar or better than her.
  • Fire-Forged Friends: As a result of their adventures in the past of Forthorthe
  • Forgets to Eat: Prone to losing herself in her research and skipping proper meals. According to Koutarou she has very little knowledge of food in general.
  • Gadgeteer Genius: In her introduction she constructs a Wave Motion Gun out of Earth parts so that it can't implicate her when she attacks Theia. After her Heel–Face Turn she invents a handful of other gadgets, including Harumi's Power Assistance Field.
  • Heel–Face Turn: She later befriends Koutaro after both of them traveled back to the past. Later on, she befriends the girls of Room 106, without them holding any grudge
  • In-Series Nickname: "Clan".
  • Our Weapons Will Be Boxy in the Future: Played with. She wields a blocky-looking BFG more advanced than anything on Earth, but it was intentionally built from only Earth parts, with most Forthortian weapons being far more sleek.
  • The Rival: To Theia. Clan is from the Schwieger family which is philosophically and politically opposed to the Mastir family from which Theia and her mother come. As preference for selecting the next Empress of Forthorthe is based on the order in which the eligible Princesses complete their qualification trials. Clan of course shows up in hopes of disrupting Theia's trial while she waits for the conditions necessary to finish her own. They later have a more friendly term.
  • Screw This, I'm Outta Here!: When she was still trying to kill Koutarou, she encounters Alaia-possessed Harumi protecting them. And facing an unknown enemy note  that's starting a counterattack, she retreats until she finds another opportunity
  • Stealth Expert: Her ship Hazy Moon boasts cutting-edge stealth technology of her own design, allowing it to perform missions which Theia's Blue Knight can't.
  • Super Wrist-Gadget: Wears one similar to Theia's.
  • Tsundere: She fills this role once Theia has grown out of it herself.

    Maki Aika (Dark Navy) 

Maki Aika

Voiced by: Kito Akemi

A Magical Girl affiliated with Darkness Rainbow, and an adversary of Yurika's.

  • Broken Bird: Maki became apprenticed to the previous Darkness Navy when she (Maya) bought her as a slave when she was a child. That is probably one of the LEAST bad memories that Maki has of growing up.
  • Dark Magical Girl: She's a Magical Girl affiliated with Darkness Rainbow.
  • Innocent Fanservice Girl: Not apparent in the Anime, but established in the novels that she has absolutely no inhibitions about stripping in front of Koutarou. So far, everyone has successfully stopped her from actually undressing and shes only tried when some one else has said something to make her think it's what shes supposed to do right that moment.
  • Heel–Face Turn: She later leaves the Darkness Rainbow, and changes side to Room 106/Satomi Knights
  • Rescue Romance: She starts developing feelings for Koutarou after he saves her from almost dying from a demon.
  • Smoke Out: She disappears into a cloud of smoke a couple of times to escape from battles she's losing.
  • What Is This Feeling?: When she starts falling for Koutarou. She first though it was the effect of their contract, but even after severing it, she still has it. It’s clear that she fell for him.


Nalfa Laren / Goddess of Dawn

Voiced by: Sumi Shimamoto

The creator of the universe and “the first and last invader”.

  • Adorkable: Her life has a 'normal' person includes being klutzy and a hobby of taking pictures with the camera she always brings.
  • Brought Down to Normal: Downplayed. She erased her memories as goddess to 'take a vacation with the others' and Forgot About Her Powers in a literal sense. But since the other invaders still have access to their powers, it's possible she also has her powers as a goddess but just doesn't use it yet.
  • Composite Character: Inverted. She made the invaders and each represent a part of her. Which is why when they (or at least two) fuse, they end up creating her.
  • First Girl Wins: Literally the first girl in the Universe and the whole point of the invasions is the hope that Koutarou will fall in love with 'all' of her. which he does
  • The Fool: Fits this even more than Yurika herself. As while Yurika knows she can sometimes be a trouble magnet and tries to avoid it (sometimes to no avail), Nalfa is always sunny cheerful and is prone to accidents, but doesn't try to actively avoid them like Yurika does.
  • Mayfly–December Romance: Older than the Universe and in love with a 16 year old boy.
  • Meaningful Name: In Forthorthian, Nalfa means "before dawn" and Laren means "rainbow", together meaning "the rainbow in the sky before dawn". She has a rainbow theme and is the creator of the universe.
  • Punny Name: Her English name in acronym is GoD


Example of: