Characters of Absolute Duo.
A new student in Kouryou Academy who came to become stronger so he can avenge the death of someone precious to him. He is dubbed an Irregular for having a shield for a Blaze. He forms a Duo with the mysterious foreign student Julie.
- Accidental Pervert: He repeatedly ends up in awkward Not What It Looks Like moments with Julie and the other girls, such as accidentally groping them or seeing them changing clothes.
- Adaptational Dumbass: In the anime, it was quite dumb of him to walk up to Lilith while she was Skipping School to talk to her, and then getting himself physically dragged off to an amusement park, and winding up in trouble with Tsukimi. That's the anime version. In the original light novel, Sakuya summoned him out of class because Lilith wanted to speak with him, and after he got there, then she dragged him off to the park, with Sakuya's blessing.
- An Arm and a Leg: The epilogue of Volume 5 has him getting his left arm, along with his Blaze, sliced off by Sakaki.
- Barrier Warrior: After Toru reached Level IV, he gained the ability to manifest Aegis Desire, a blue energy barrier capable of shielding himself and allies at a large radius.
- Battle Couple: With Julie.
- Calling Your Attacks: Julie decided to dub his special punch attack "Mjolnir", after the destructive hammer wielded by the Norse god Thor.
- Can't Catch Up: To Sakaki. Doesn't help that Sakaki was taken in by a nebulous organization and given super-powers.
- Childhood Friends: He and Tora grew up in the same dojo.
- Covert Pervert: In the anime, when Julie and Lilith play "guess who" on him, he identifies them by their breast size. (Though he doesn't say it out loud, the camera implies it.)
- Cynicism Catalyst: The death of his dojo, especially his little sister, made him decide to become stronger so he could avenge them.
- Dark and Troubled Past: His entire dojo, including his younger sister, were killed right in front of him by Sakaki Narukami, for "being weak." His sister died protecting him.
- Declaration of Protection: He promises Julie he will protect her.
- Does Not Like Spam: He doesn't like vegetables. Tachibana and Hotaka force him to eat them.
- Insecure Love Interest: He feels he is not good enough for any of the girls, because he is not strong enough to protect them.
- Luckily, My Shield Will Protect Me: His Blaze is a shield.
- Megaton Punch: He has a powerful punch attack which he learned from his days at the dojo.
- Nice Guy: Nice, considerate and protective.
- One Head Taller: He's a full head taller than Julie.
- The Only One Allowed to Defeat You: He doesn't just want to see Sakaki dead, he wants to be the one who rips that stupid smile off his face with his own two hands. In volume 6, when he meets Sakuya after coming out of the hospital, he's relieved when she says she doesn't care about who beat Tor, not because he's worried that Sakaki will retaliate against Sakuya going after him, but because he's afraid Sakuya will succeed in killing the bastard.
- Religious and Mythological Theme Naming: Named after the Norse god of thunder, Thor.
- Revenge: He wants to avenge the people of his dojo, especially his little sister.
- She Is Not My Girlfriend: Towards Julie. Lasts all of one sentence before Toru gives up and just lets people think that she is.
- Skyward Scream: The first thing he does when he gets out of the hospital in volume 6, and thinks he's alone is scream out his rage at his apparent impotence against Sakaki.
- Spell My Name with an "S": Tooru, Tor or Thor?
- Thou Shall Not Kill: Has yet to kill anyone. Even after learning the Blaze weapons can be used to kill.
- Trademark Favourite Food: Meat.
- Understanding Boyfriend: Even after discovering Julie's secret that she's actually an El Awaken whose powers can cause her to go berserk and hurt him, he promises to remain by her side as her Duo and protect her.
- Wouldn't Hit a Girl: He doesn't like to fight girls and tries to avoid hurting them as much as possible. He will make an exception in actual combat or official matches, though.
- Xanatos Speed Chess: This is his true strength in battle. He can prepare and modify rather intricate and powerful strategies on the fly, in the heat of battle.
- You Remind Me of X: When Tachibana hands him a tray of honeyed lemons after morning practice, he's reminded of his sister because she used to do the same thing.
A beautiful girl with red eyes and silver hair who takes an interest in Toru and after some time she becomes his Duo. She is from a foreign country named Gimlé in Scandinavia. Her Blaze is a Sword Type, known as Twin Blades.
- A-Cup Angst: Downplayed. In the anime, after sneaking into Toru's bed for the first time, both awake to find Toru's hand on her breast. When he tries to pull away, she grabs his hand and asks if they're okay. He happily praises their softness before catching himself. The light novel plays that event very differently.
- Action Girl: She's an opponent to be feared when she summons her Blaze.
- Affectionate Gesture to the Head: Tor pets her on the head on several occasions. She absolutely adores it when he does.
- Animal Motifs: The light novel refers to her as a wolf on several occasions.
- Badass Adorable: This cute doll-like little girl can easily kick your ass and slash right through you with her twin blades.
- Battle Couple: With Toru.
- Bedmate Reveal: She has a habit of sneaking into Toru's bed when she feels lonely.
- Can't Hold Her Liquor: Taken to ridiculous extremes. She gets drunk from tasting a bit of rum raisin ice cream.
- Clingy Jealous Girl: Downplayed. She's been asked, point blank (especially in the later parts of volume 5), about Toru having romantic relationships with other girls, like Miyabi or Tomoe, and she's answered not only that the idea doesn't bother her but that it makes her happy, and she says it sincerely. Lillith, on the other hand, makes her very uncomfortable because of her Self-Proclaimed Love Interest and Entitled to Have You attitude, and numerous attempts to take Toru away from her. Unlike other instances of this trope, however, Julie does not get violent, hysterical or angry. She doesn't even raise her voice. She just turns the moe Up to Eleven and wraps Lilith around her little finger, and she becomes so skillful that Lilith doesn't even realize what's going on until it's over.
- Cloudcuckoolander: Weird, spacey and usually gets strange ideas.
- Dark and Troubled Past: When she was little, her father was killed by an unknown person right in front of her eyes. The same person also put a scar on her back. She entered Kouryou Academy to become strong enough to avenge her father.
- Declaration of Protection: Just like Toru promised to protect her, she promises to protect him in return.
- Dual Wielding: Her Blaze manifests as twin blades.
- Expressive Hair: Julie's Idiot Hair wiggles when she's happy or excited about something, usually because of Tooru.
- Girlish Pigtails: She ties her hair twintails, which emphasizes her already childlike appearance.
- Going Commando: In Episode 7, she loses her panties and has to go around without them. At the end of the episode, she asks Toru to carry some emergency panties for her from now on.
- Gorgeous Gaijin: She comes from a foreign country named Gimlé in Scandinavia. Her exotic beauty leaves everyone stunned.
- Hair Decorations: Two black ribbon bells.
- Harem Seeker: She's not just well aware of Miyabi and Tomoe's feelings for Toru, she outright welcomes it and wants Toru to reciprocate. It helps that Miyabi and Tomoe are both very close personal friends and always defer to her in matters regarding Toru. Lilith annoys her because Lilith is always trying to take Toru all for herself.
- Hates Being Alone: She can't stand being alone, which is why she is so attached to Toru.
- Heroic Albino: The main heroine with silver hair, pure white skin and ruby red eyes.
- Hime Cut: She is an aversion. While she looks like the trope (bangs, long hair, etc.) and has the quiet strength associated with its character types, she's from a Scandinavian country.
- Idiot Hair: Has a cowlick that stands prominently atop her head.
- Innocent Fanservice Girl: She sees nothing wrong with sleeping in only a nightshirt and panties, while sharing a room with Toru and usually sneaking into his bed. In the light novels, Julie even thinks it's okay to invite Toru to take a bath with her after Tsukimi assigned them to be a Duo.
- Lightning Bruiser: Julie is this even compared to other Exceed, because she's actually not an Exceed but one of El Awaken, individuals born with power that Exceed were created to imitate.
- Like Parent, Like Spouse: She says Toru reminds her of her father.
- Little Miss Badass: One of the youngest looking girls in the cast, and also one of the strongest.
- Ms. Fanservice: Julie is the girl we get to see the most skin from.
- Mugging the Monster: The prologue of Volume 5 in the light novel shows a scene 4 years before the start of the story. A criminal group fleeing from an Exceed chances upon Julie training in the forest. They decide taking her hostage would be a good idea. Big Mistake!
- Mundane Utility: Episode 8 of the anime has her using her Blaze to chop vegetables in mid air, very effectively.
- Mystical White Hair: Her silver hair highlights her mysterious nature and behaviour. Turns out she is not an Exceed like everyone else, but an El Awaken, individuals who unlike Exceeds, are able to materialize Blazes without being injected with Lucifer nanomachines.
- Nice Girl: Always kind, helpful and polite.
- Older Than She Looks: Julie is roughly around the same age as the other characters, yet she is often mistaken as an elementary or middle schooler.
- Power Incontinence: Her powers as an El Awaken cause her to go berserk when she lets her emotions go out of control. When she's in that state, not even Toru is safe.
- Rapunzel Hair: As can be seen in the protrait, her hair easily reaches her hips.
- Rei Ayanami Expy: Silvery-white hair, red eyes, pale skin, petite, mysterious and troubled past, not a normal human, stoic and weird behaviour, eventually reveals a sweet and emotional side to her love interest.
- Revenge: Like Toru, she has someone she wants to avenge.
- Scars Are Forever: She has a scar on her back. The man who killed her father gave it to her.
- Significant Birth Date: Her birthday is on April 1st, April Fools.
- The Stoic: She usually shows little to no emotion in front of people other than Toru.
- Sugar-and-Ice Personality: She shows absolutely no emotion in public. When in private with Toru, she reveals a sweet and cute side.
- Super Drowning Skills: She can't swim.
- This Is Unforgivable!: She says this almost word for word when K struck down Toru and boasted of killing him.
- Token Mini-Moe: She happens to be the youngest looking girl in the series after Sakuya.
- Traumatic Superpower Awakening: She reveals to Toru that her El Awake powers manifested as a direct result of seeing her father struck down, and the killer mocking and blaming her for it.
- Unstoppable Rage: In Episode 9 and 12, she goes completely berserk when K tries to kill Toru. In her rampage, she nearly defeated K on her own.
- Violently Protective Girlfriend: Don't you ever hurt Toru in front of Julie, because she will enter in an Unstoppable Rage and will try to slash you in half.
- Zettai Ryouiki: She wears black thigh-high stockings.
Toru and Julie's classmate. She is smart and talented and possesses a dignified atmosphere. She cares very much about the people who are close to her especially Miyabi, whom despite of being weak still chooses her to form a duo. She is very much into martial arts and Shogi. Being a vegetarian, she often gives Toru a plate of vegetables to maintain his stamina and power. Her Blaze is a Kusarigama.
- Action Girl: A skilled Blaze warrior and martial artista capable of going toe to toe with Julie.
- Ain't Too Proud to Beg: Combined with Apologizes Alot. At least in the anime, every time she realizes that she accuses Tor of some indecent behavior falsely, she runs up to him, apologizes and throws herself to the ground, begging and pleading for forgiveness in a comically exaggerated manner.
- Alliterative Name: Tomoe Tachibana.
- Catchphrase: "Kokonoe, you dog!"
- Chain Pain: Her Blaze manifests as a Variable-Length Chain.
- Hair Decorations: The yellow headband with a ribbon attached to the side of her hair.
- Heterosexual Life-Partners: With Miyabi.
- Hypercompetent Sidekick: To Miyabi. While Miyabi is barely able to fight, Tomoe stands out as the stronger, smarter, and more talented of the two. This usually makes Miyabi insecure, since she thinks she only pushes Tomoe down.
- Nice Girl: She's polite, friendly and very helpful, especially towards Miyabi.
- Proper Tights with a Skirt: She wears black tights with her school uniform, making her look more elegant compared to the other girls.
- Rapunzel Hair: Goes past her waist.
- Rules Lawyer: The light novel shows this is her primary defense mechanism back at her very, very strict and chauvinistic dojo.
- Samaritan Relationship Starter: During their first practice spar, Tachibana was annoyed that Toru didn't hit her back. Toru replied that while gender is not an issue in actual combat or official matches, he otherwise Would Not Hit a Girl. This is FAR better than the treatment she got back at her dojo and is the primary reason why she starts to like him.
- Satellite Character: As the series progresses, her role is only to be Miyabi's more competent partner and trying to get Miyabi to be more self-confident.
- Tsundere: Type B. She is nice and agreeable, Toru and several of the misunderstandings involving him and Julie, set her off.
- What Is This Thing You Call "Love"?: She grew up not knowing what love is, which makes her growing feelings for Toru confusing for her.
- Yamato Nadeshiko: She's described as one given her traditional beauty, being smart and talented and possessing a dignified atmosphere.
- Voiced by: Ayaka Imamura (Japanese), Ashleigh Domangue (English)
Tomoe's Duo. She is also in Toru's class and tends to be shy around others, especially men. Her Blaze is a huge and heavy lance which is capable of doing large scale destruction, however she has a hard time using it.
- Adaptational Villainy: The anime makes it look like Miyabi joined "The Rebels" willingly. In the light novel, she is specifically tricked into thinking Equipment Smith is one of Sakuya's researchers, acting under her orders. It's not until after K's used her as a puppet to attack her classmates that she learns different.
- Adaptational Wimp: In the anime, Tomoe is able to break K's control with an Armor-Piercing Slap. In the lightnovel, Toru has to punch her into unconsciousness.
- Awesome, but Impractical: Her Blaze is a huge lance which would be very effective in both offense and defense except that she has neither the strength nor the stamina to wield it properly for any length of time.
- Because You Were Nice to Me: Tor is the first guy she ever met (once she entered puberty) who treats her Gag Boobs as merely part of the package known as Miyabi Hotaka and actually cares for her thoughts and feelings as a person. When she collapses on the track and field, he stands by her and helps her recover. When she sprains her ankle, he carries her to the infirmary. When she's feeling down, he offers words of encouragement. All without ulterior motives. For someone with Miyabi's life experiences, this means a lot.
- Brainwashed and Crazy: She is forced to attack her friends by K using a remote control.
- D-Cup Distress: She suffers a particularly harsh and tragic case of this. Prior to Toru, just about every guy she met treated her as nothing more than a walking, talking pair of giant tits, and girls lashed out at her due to sheer jealousy of her figure until she met Tachibana.
- Does Not Like Men: She is afraid of men and has a hard time just being near them.
- Gag Boobs: Exaggerated in the anime. She is able to use the breakfast table as a makeshift push-up bra, and has trouble reaching her meal.
- Gainaxing: Toru really notices how bouncy her breasts are on several occasions, especially when he runs on the track with her in volume 6. The lightnovel illustrates it.
- Girlish Pigtails: She has her hair tied up into two mini-tails.
- Hair Intakes: The two "cat ears" in her hair.
- Heroic Self-Deprecation: She sees herself as worthless and thinks she will only push down Tomoe.
- Heterosexual Life-Partners: With Tomoe.
- I Just Want to Be Badass: She wants to become stronger so she doesn't slow Tomoe down and so Toru looks at her.
- Jousting Lance: Not exactly a jousting lance but Miyabi's Blaze is a lance which is very heavy and very large.
- Love Epiphany: In Episode 7, she realizes that she is in love with Toru.
- Love Makes You Evil: Because of her obsession with Tooru and being rejected by him, Miyabi accepts an Unit, specifically EII.Libel, from Equipment Smith and attacks her friends.
- Shrinking Violet: She is very shy and meek, especially around boys.
- Single Woman Seeks Good Man: She falls in love with Tooru because of his kindness and supportiveness to her.
- Yandere: In the anime, briefly during episode 11, due to being Brainwashed and Crazy. Her Duo Tomoe slaps her out of it.
A transfer student from England came from an affluent family. She is called an "Exception" and due to this, she claims to be able to do anything regardless of the rules. She went to Japan in order to form a Duo with Toru after hearing news about his capability and being special just like Lilith, however Toru rejects her because he is already a Duo with Julie. Her Blaze is a rifle, which breaks the conventions of a typical Blaze.
- The Ace: Comes from her status as an "Exception". She's talented, smart, beautiful, popular, rich and has a special Blaze.
- Action Girl: The first level 1 to defeat a level 3 wasn't Toru, it was her, and she did it alone, unscathed. Toru was the second to accomplish the same, and he was not only badly injured, but had a lot of help.
- Big Breast Pride: She loves to show off how well-endowed she is and believes this gives her an advantage to win Toru.
- Brilliant, but Lazy: Fits this to a T. Had she put in any effort into her studies and physical training, she wouldn't have fallen behind.
- Buxom Is Better: She's a firm believer in this, even when it works against her.
- Catchphrase: "Don't make me say it twice!"
- Character Development: By the end of Volume 4, or episodes 7, 8, and 9, Lilith realizes that if she wants any shot at Toru, she had better not get in the way of the others expressing their feelings for him. So even though she doesn't actively support the others growing closer, she does her best to not try and sabotage them either.
- Entitled to Have You: She just decides Toru is meant to be her Duo because he has an unusual Blaze like her, fully expecting him to abandon his current Duo, Julie, so he can team up with her. And after she develops feelings for him, she decides he will be her future husband, no objections.
- The Gift: She's called an "Exception" because her Blaze breaks the conventions of a typical Blaze and give her an unusual potential.
- The Gunslinger: Her main role in battle, though she is no slouch at close range either.
- Hair Decorations: She always wears a light pink ribbon at the back of her head to style her hair.
- Hair of Gold, Heart of Gold: Young, beautiful, an elegant Ojou, and a fairly decent person when she wants to.
- It's All About Me: As noted by Toru she thinks very highly of herself.
- Jerk with a Heart of Gold: Selfish, arrogant, haughty and bossy, but later she starts showing she is not a bad person deep down.
- Ms. Fanservice: After Julie, most of the fanservice in the series is from Lilith. Her introduction even has her naked.
- Mundane Utility: The light novel introduces her using her Blaze for hunting deer. Although she does hit the animals, they are not killed and are simply stunned for a few minutes before getting up like nothing happened.
- Naked on Arrival: Introduced while taking a bath in the anime. In the light novel, she is illustrated hunting deer with her "blaze," also in the nude for some reason.
- New Transfer Student: She transferred to Koryo Academy to convince Toru to become her Duo.
- Ojou: She comes from an extremely rich family, has a personal maid, lives in a rather vast estate in another country and travels by private helicopter.
- Ojou Ringlets: She has two sidelocks that curl into ringlets, which highlights her high-class position.
- One-Woman Army: She takes all the 2nd year Class by herself and required a cooperation between Tooru, Julie, Tomoe, Miyabi and Tora to disarm her.
- Rapunzel Hair: Goes all the way down to her waist.
- Rebellious Spirit: She just loves to show off her status as an Exception by going around breaking all the rules she can and doing whatever the hell she wants.
- Rescue Romance: She falls in love with Toru after he goes to save her from being taken away by Equipment Smith's troops.
- Rich Bitch: Because of her family status, she thinks she is better than everyone else and lets them know it.
- Screw the Rules, I Have Money!: She uses her vast fortune and contacts to go free of any academy rules. She's always Skipping School with no consequences, for instance.
- Self-Proclaimed Love Interest: After falling in love with him, she declares Toru her future husband.
- Skinship Grope: She gropes Tomoe's breasts in Episode 10. It's her peculiar attempt to cheer Tomoe up after Miyabi's disappearance.
- Skipping School: She always skips class to go sipping tea at the school garden. She claims she doesn't need to go to class because she already finished her studies a long time ago.
- Spoiled Brat: Being a privileged Ojou, she does whatever the hell she wants and when she wants something, she expects to get it right away.
- Sympathy for the Devil: Has a strange sympathy for Sakuya, the creepy Mad Scientist of a principal.
- The Tease: She loves to playfully flirt with Toru and get flustered reactions out of him.
- Trigger Happy: Ever since she was a child, Lilith has loved guns above anything, and she says they are part of her soul, which is why her Blaze is a rifle.
- Tsundere: She constantly switches from haughty and bossy to cute and affectionate.
- Tsurime Eyes: Her sharp eyes reflect her arrogance and overconfidence.
- Zettai Ryouiki: She wears white thigh-high stockings.
Aoi "Tora" Torasaki
- Voiced by: Natsuki Hanae (Japanese), Anthony Bowling (English)
Toru's childhood friend and martial arts rival. Toru is surprised to see him at Sakuya's academy. Like Toru, Tora is considered an Irregular. His Blaze is a katar.
- Ambiguously Gay: Some of his reactions to Toru suggest he might like him as more than an old friend.
- Animal Motifs: 'Tora' is Japanese for tiger.
- Arrogant Kung-Fu Guy: While he's no slouch in martial arts, he overestimates himself in every fight scene.
- Bash Brothers: With Tatsu.
- Blade Below the Shoulder: His Blaze manifests as a short-sword that he wields like brass knuckles.
- Childhood Friends: With Toru. They went to the same martial arts school and Tora would usually hang around his house.
- Leeroy Jenkins: His MO is attack first, think later. It seldom works for him though he was one of the top contenders in the "mock combat" festival, and actually held his own quite well in Episodes 7, 9, and 11.
- Locked Out of the Loop: He doesn't know the true story of what happened to Toru's family and dojo.
- The Rival: With Toru.
- Tsundere: He acts harsh and rude towards Toru, pretending that he doesn't care about him when he clearly does. Maybe even as more than a friend...
- Vitriolic Best Buds: With Tatsu. Toru notes that Tora and Tatsu quarrel frequently, even though Tatsu only speaks through body language.
Ryuutarou "Tatsu" Tatsuno
- Voiced by: Yoshihisa Kawahara (Japanese), Tyson Rinehart (English)
- Bash Brothers: With Tora. They fight surprisingly well together.
- Blade on a Stick: His blaze is a naganata, a type of Japanese spear.
- Eyes Always Shut: He almost never opens his eyes.
- Hunk: He's by far the tallest character in the series, and the most muscular.
- The Silent Bob: Somehow, Tsukimi perfectly understands his answers in class through body language alone.
- Vitriolic Best Buds: Toru notes that Tatsu and Tora quarrel frequently despite forming a good team together.
One of the first students Toru meets upon coming to Sakuya's academy, and also his first opponent. Her Blaze is a single sword.
- The Bus Came Back: After losing the match with Toru at the entrance exam, she supposedly drops out. She returns in Episode 7.
- Casual Danger Dialogue: Even though she and Toru have already finished their battle at the "entrance exam," either of them could have been hit by a stray blow or debris, but they just stand there chatting like they were on a picnic, or watching a parade.
- Don't You Dare Pity Me!: She was annoyed that Tor was hesitant to manifest his Blaze, and (at least in the light novel) actually went easy on her in their match.
- Graceful Loser: Has no hard feelings losing to Toru in the entrance exam, and the two part on good terms.
- Heroes Prefer Swords: Her Blaze manifests as a sword or katana.
- Nice Girl: Very nice and friendly. When Tooru accidentally touches her breast, she just politely asks him to move his hand instead of getting angry and hysterical.
- Shipper on Deck: She supports Miyabi's crush on Toru and encourages her to act on her feelings.
- Unwitting Instigator of Doom: Because she encouraged Miyabi to confess her feelings to Toru and convinced everyone to leave the two alone at the beach, Miyabi got rejected by Toru and she joined Equipment Smith to gain the strength she wants to protect Toru.
- Voiced by: Yukari Tamura (Japanese), Jennifer McDaniel (English)
The first and primary teacher at Kouryou Academy, and the one who basically explains all the minor nuances of being an Exceed. Her Blaze is a whip-sword.
- Adaptational Badass: In the light novel, blocking K's attack caused her to lose a significant amount of her abdomen, and even with her Blaze Healing Factor, required a significant hospital stay and was still not completely recovered when returning to class. In the anime, she's just bleeding slightly from her forehead though unable to move, and is fully recovered the next day.
- Adaptational Jerkass: Downplayed. She's not quite as harsh with Toru in the light novel as in the anime, but she's still highly unpleasant, at least at first.
- Animal-Eared Headband: Wears one with bunny ears.
- Animal Motifs: A rabbit.
- Ax-Crazy: And that's putting it mildly.
- Badass Adorable: She still wears her maid outfit with bunny ears when she goes to kick ass.
- Badass Teacher: Despite not being nice to them, she's protective of her students when it comes down to it. This is shown when she defended them against K's attack.
- BFS: Her Blaze is a bastard sword.
- Blood Knight: She really loves combat, especially killing people, as shown in episode 9.
- Bunny-Ears Lawyer: Literally. She's an eccentric teacher in a maid outfit with bunny ears, yet she is a good teacher and a skilled fighter.
- Cloudcuckoolander: Her entrance has her coming into the classroom through the window, and she only gets stranger after that.
- Contralto of Danger: When she drops the cutesy teacher act, she also drops her high-pitched voice and so, sounds deeper while showing her nastiness.
- Curtains Match the Window: Violet hair and eyes.
- Cute and Psycho: After she fights Toru and Julie, she bounces back and forth between these two aspects of her personality at the drop of a hat.
- Dark Action Girl: She's pretty brutal and nasty in combat and loves to kill people.
- Drill Sergeant Nasty
- Even the Girls Want Her: She gains many fangirls after she protects the girls' dorms.
- Hot for Student: She is really fond of Momo Kibitsu. Despite all the teasing she gives him, she is explicitly not this for Toru.
- Hot Teacher: Invoked, and Lampshaded.
- I Owe You My Life: Toru saves her life in the light novel from K, after she was grievously wounded saving the life of another student from K's assault.
- I Am Not Left-Handed: Episode 9 shows she was holding back in her fight with Toru in the "mock combat" festival. She's actually a level 4.
- Jerk with a Heart of Gold: While she is a psychopath, she does care about her students.
- Manipulative Bitch: There is always a method to her madness. That "harmless" Skinship Grope she uses on you in the hot springs? Careful that she's not recording it to use as blackmail against you later.
- Meido: Wears a maid outfit, which is odd coming from a teacher.
- The Mole: Subverted. She claims to be this when attacking Toru during the "mock combat" festival. The truth is a different matter.
- One-Woman Army: Once she stops holding back, she shows her true strength by taking down an entire faction of Equipment Smith's troops.
- Sensei-chan: Takes this Up to Eleven, being an extremely quirky, young and cute teacher in a maid outfit with bunny ears.
- Shameless Fanservice Girl:Tsukiumi: Iyaaaaan, Kokonoe-kun you pervert☆ Its not that my panties can be seen, I. am. Showing. it♥Toru: Why .Tsukiumi: Ive been away for a while, so this is masturbating material gift for you .
- Skinship Grope: She enjoys groping Miyabi and Tomoe when they are bathing at the hot springs.
- Taking the Bullet: More like taking the Wave Motion Gun. She blocks K's attack with her body, protecting a girl in the light novel and getting grievously harmed in the process. Protecting the entire female dorms in the anime, again getting injured, but not as badly.
- The Tease: She takes this Up to Eleven in the light novel, purely for the sake of annoying and frustrating Toru.
- Took a Level in Kindness: She's still a Drill Sergeant Nasty Blood Knight, but she's become far more amiable as the story progresses, thanks in large part to Toru. She would never have developed feelings for Kibitsu otherwise. Sakuya greatly appreciates this, though she will never admit it.
- You Gotta Have Blue Hair: Violet hair, in her case.
- Zettai Ryouiki: She wears thigh-high stockings.
The secondary teacher in Kouryou Academy.
- Cloudcuckoolander's Minder: He plays this role in the light novel, supervising Tsukimi. In the anime, this aspect is completely removed.
- Demoted to Extra: So much so that he's almost entirely Adapted Out. In the light novel, he has a major influence on the story. In the anime, he only has one short scene in Episode 9, and he's not even named there.
- Flechette Storm: His Blaze manifests as a dozen knives, that fly.
- One-Man Army: He could easily take down the entire squad of soldiers that Equipment Smith sent to the school.
The dean and principal of the Kouryou Academy, where the Exceeds are made and trained.
- Eerie Pale-Skinned Brunette: She has long black hair and pale skin. As for the eerie part, the lengths she is willing to go to achieve the Absolute Duo make her scary...
- Elegant Gothic Lolita: She wears a black Gothic style dress.
- The End Justifies The Means: She will do anything to achieve Absolute Duo.
- Enfante Terrible: As her Red Baron suggests, she's a diabolical and sadistic ten-year-old.
- Girlish Pigtails: She wears her hair in long pigtails which suits her doll-like look.
- Hair Decorations: She wears a head dress that almost cover her head, with a pink rose on both sides of it.
- Improbable Age: She's only 10-years-old and she's already the principal of an academy.
- Insane Troll Logic: In the anime, she mentions that Tsukimi trying to kill Toru, Julie, Tora, and a few others made her the best teacher Sakuya's ever seen. Why? Because you can't argue with her results of finding a level one student who could defeat a level three.
- Lack of Empathy: She admits that she gives her students a happy school life solely so they have something to fight for, and then if they get killed in combat, they are completely worthless.
- Mad Scientist: She runs an academy in which the students and teachers are injected with nanomachines called "Lucifer" which allows them to manifest Blazes. Tora even said that the Kouryou Academy is Sakuya's "lab" and its students are her "guinea pigs".
- Rapunzel Hair: Her twintails are long enough to reach down her waist.
- Red Baron: She's known as the "Blaze Diabolica"
- Shipper on Deck: A strange one at that. She is rooting for Toru to enter a Polyamory relationship with his multiple love interests, and wishes for all their happiness.
- Token Mini-Moe: The only girl in the series that looks even younger than Julie, who already looks like a preteen.
- Troubling Unchildlike Behavior: What kind of 10-year-old would see people's lives as nothing more than test subjects for some kind of mad experiment? And then have no plans to do anything with the result?
- Voiced by: Ami Uchida (Japanese), Leah Clark (English)
A student whose life was saved by Tsukimi from K's assault in the light novel.
- Cry into Chest: The first thing she does upon Tsukimi's return to the classroom is run up to her and do this. Amusingly, Tsukimi is completely flustered by this and has no idea how to handle it, begging Toru to help her.
- Cry Cute: She breaks down in tears upon seeing a (near fully) recovered Tsukimi.
- Demoted to Extra: In the anime, she only gets a brief cameo in Episode 6.
- Hot for Teacher: Her feelings towards Tsukimi go beyond just student and teacher.
- I Owe You My Life: Towards Tsukimi.
- It's All My Fault: Says this word for word when Tsukimi is taken to the hospital after rescuing her from K.
- Morality Chain: For Tsukimi.
- Rescue Romance: She has very strong feelings for Tsukimi, Tsukimi saving her life started it.
- Voiced by: Takahiro Sakurai (Japanese), Z. Charles Bolton (English)
A soldier who serves Equipment Smith as the commander of the Rebels.
- Cynicism Catalyst: The death of his older brother really did a number on him. His family's response didn't help one bit.
- Dark and Troubled Past: His brother was killed in front of him. His family fell apart, and rather than give him the therapy he needs, or help hunt down the killer, his parents sold him to a criminal organization where he was experimented on, abused, and made into a psychotic killer.
- Disc-One Final Boss: The primary action antagonist in the first season of the series.
- Don't You Dare Pity Me!: In the light novel, he's actually insulted that Tor stepped between him and the berserk Julie because that saved his life. Tor only did it because he was afraid that if berserk Julie killed K, she would never go back to normal.
- Driven by Envy: This is his primary reason for hating and trying to kill Toru. To his eyes, Toru has a happy and healthy relationship with Julie, and K wants to make either or both feel the pain he feels before he dies.
- Evil Cannot Comprehend Good: He is disgusted and baffled by Toru's strong desire to protect someone he cares about.
- Faux Affably Evil: A ruthless killing machine who communicates in formal and polite linguistics, he hates the shit out of Toru to the point that K wants to make both him and Julie feel the same pain as K did before he dies.
- Foil: To both Julie and Toru.
- Freudian Excuse: And it's a doozy. After his brother was killed, his parents sold him to Equipment Smith, who made him a ruthless killing machine that only cares about power and results.
- Mistreatment-Induced Betrayal: He kills Equipment Smith after being abused one time too often, and steals the epitome of Equipment Smith's research before going after Tor and Julie for revenge.
- Not So Different: From Toru. The guy that killed Toru's sister and entire dojo also killed K's older brother.
- One-Letter Name: He is known only by the letter K since his real name was taken from him.
- Only Known By His Nickname: Or codename in this case. His real name (revealed to be Kevin Wayfair) was taken from him.
- Parental Abandonment: When his brother was killed, his parents sold him to Equipment Smith.
- Used to Be a Sweet Child: He was a good boy, until his brother was killed and his parents sold him to Equipment Smith.
- Would Hit a Girl: Has no problem harming and nearly killing Julie.
- You Have Outlived Your Usefulness: Chapter 3 of Volume 5 in the light novel has the guy who killed his brother and ruined his life take him out of prison and then summarily cut him in half because his "part in the play" is over.
The boss of a criminal organization at odds with the academy where the protagonists study.
- Evil Old Folks: He looks like a harmless old man, but is in fact the boss of a criminal organization.
- Faux Affably Evil: As long as things are going his way, or he thinks things are going his way, he's calm, polite, and cordial. Once things stop going his way, or he perceives some slight, real or imagined, he flies into a rage and sends death squads after people.
- Smug Snake: He thinks he's in control, and always the smartest man in the room. He seldom is.
- Villain Ball: Kicking, insulting, and yelling at a teenage boy whom you've made into a psychotic killing machine and given super-human powers isn't the brightest of ideas. Especially after he just suffered a humiliating loss to people he considers inferior to himself. Doubly so considering he has plenty of reason to hate you already, and you're waving around a MacGuffin that gives him reason to not need you any more.
- Villainous Breakdown: He took his loss to Sakuya's students especially hard which is odd considering that his "research" to date has been trying to break into Sakyua's labs and kidnap her students. Then again, the comments he heard from all the other organizations trying for 'Absolute Duo' weren't exactly kind.
- Would Hurt a Child: K and quite a few others would happily testify to that.
Toru's former best friend who is responsible for killing Toru's sister Otoha.
- Absurdly Sharp Blade: He can cut people in half vertically with a single fluid sword strike.
- Armor-Piercing Question: He uses one to distract Toru before striking him down.
- "Can you protect your friends with bloody hands?"
- Big Bad: The primary antagonist in the story and the one responsible for most of the suffering and heartbreak, all for the sake of "enacting a play."
- Broken Ace: He's handsome, wealthy and exceptionally skilled in martial arts even aside from his swordsmanship. He's also evil, malicious and twisted.
- Creepy Child: He's a teen, roughly Toru's age.
- Curb-Stomp Battle: Toru's confrontation with Sakaki ends in shambles for the former, having both his Blaze and left arm sliced off by the latter.
- Dissonant Serenity: His voice and facial expression don't change whether he's talking about the weather or mowing down people like flies.
- Evil Cannot Comprehend Good: Oh, he's well aware that Toru is pisssed after what he's done, but he does a good job of at least pretending to not understand why.
- Evil Former Friend: He acted as Toru's best friend until he turned, and killed Toru's dojo and everyone in it, especially Otoha Kokonoe.
- Greater-Scope Villain: He's not at the top of the list of nasty people in the story, but he's far worse than K or Equipment Smith were.
- Hate Sink: Responsible for the majority of the atrocities that occurred throughout the story and holding no remorse for committing them, he's easily detestable.
- Implacable Man: Nothing Toru does even manages to slow him down, and that's Toru at level IV. If Toru's continued survival wasn't part of the whole "Stage of Darkness" thing, Toru could, and would be easily killed by this guy."Your fang will never reach me. Yes, absolutely."
- Leaning on the Fourth Wall: He's always talking about things like "scenes," "lines in a play," or "playing a part." Does he know he's in a light novel? Or is he just crazy?
- Light Is Not Good: He shows off a special skill "Ogre" based off his soul and it takes the form of a glowing sword and used a beam of light to teleport K out of prison, but nothing about this guy, or his behavior is "good."
- Not So Different: Tries to invoke this on Toru, repeatedly. Toru, unsurprisingly, will have none of it.
- Perpetual Smiler: No matter what he's doing or what's going on around him, he just does not stop smiling, ever. One of Toru's goals is to knock that smile off his face, with violence.
- Smug Super: He believes that nobody can touch him. Sadly, as of now, he appears to be right.
- The Sociopath: An evil and twisted Jerkass who commits horrible atrocities for no other reason than to stave off his boredom and because no one is strong enough to stop him.
- Troll: While he had the decency to leave Otoha's grave alone, he did appear at the site of Toru's destroyed dojo purely for the sake of provoking and enraging Toru.
- Voiced by: Manami Tanaka (Japanese), Lara Woodhull (English)
Toru's younger sister.
- Big Brother Worship: She adored her big brother.
- Death by Origin Story: Her death serves as a part of Toru's backstory to create a motivation for him.
- Plot-Triggering Death: It's because of her death that Toru joined Kouryou Academy so he could avenge her one day.
- Posthumous Character: She died protecting her brother before the beginning of the series.
- Taking the Bullet: She jumped in the way of a sword strike to save her big brother.
The leader of a Yakuza clan that lives near Toru's dojo and pulled his unconscious body (along with his sister's corpse) out of the burning dojo. He is also the one who tells Toru about Kouryou Academy.
- Brutal Honesty: He doesn't mince words when telling Toru what he lacks in martial skill or physical ability.
- The Don: Runs a yakuza clan and dojo.
- Nice Job Breaking It, Hero!: Making the arson of Toru's dojo look like an accident only served to let Narukami Sakaki grow stronger and kill more people.
- One Degree of Separation: He used to be the sparring partner of Sakaki's father, so he knows Sakaki, personally.
- Secret Keeper: Is one of the few people who knows what really happened to Toru's dojo and family.