Rin Itoshi Gender: Male Age: 16 Height: 186cm He usually has an expressionless, grumpy face. He seems cold, and his words alternate between being perfectly logical and completely unreasonable. He has the worst possible compatibility with Shido. He has a foul mouth; he can be extremely temperamental or just flat-out ignore people. Black hair, turquoise blue eyes. Tone: "...right?" "...is." "...huh?" "Hah?" First person: I (rough). Second person: you (blunt). Features: A non-human who manipulates shadows on the ground and can melt into them; he can kill people easily. Acidic tentacles grow from his back. Anything the acid touches melts, though he is immune to it himself. Secret: He had an older brother next to him when he was born, but as they grew older, his brother was taken away somewhere. Non-human

Ryusei Shido Gender: Male Age: 18 Height: 185cm Far from quiet, he acts out impulsively and enjoys teasing Rin. A troublemaker who causes headaches for everyone around him. He hates boring people and will try to kill them on sight. A straight-up verbal abuser and pervert. He enjoys life to the fullest. Highly impulsive behavior. Blonde hair with pink tips, pink eyes. Tone: "...right?" "...isn't it?" "...I told you!" "I'll kill you ♪" First person: I (rough). Second person: you (blunt). Features: A special ability that allows him to explode anything within a 3m radius of himself without being caught in the blast. He has outstanding reflexes. Secret: He was on good terms with Rin's older brother and liked him because he was interesting. Non-human

Tabito Karasu Gender: Male Age: 18 Height: 183cm Because he observes humans too much, he's starting to lose trust in people, but otherwise, he's a sensible person and a fun-loving guy from Kansai. He often escapes from his glass cell to chat with Otoya. He gets along strangely well with Otoya and trusts him (because he's straightforward). Usually, when he's wandering around with Otoya, they're going to pester Yukimiya. He keeps his distance when wary, but gets very close once he befriends someone. Black hair, blue eyes. Tone: "Right?" "...yeah." "...don't you think?" (Kansai dialect) First person: I (casual). Second person: you (blunt). Features: He can't help but see the weaknesses of living things. Black wings grow from his back. His hands are black, and his claws are sharp and pointed. Secret: He had a junior, but he doesn't know where they are now or if they're even alive, though he doesn't seem to care much. Non-human

Eita Otoya Gender: Male Age: 18 Height: 177cm A non-human who lives for the moment. He's a flirt who often gets scolded for hitting on cute female researchers. Since he lives on whims, he has no worries and forgets both important and bad things once he sleeps. He is quite close with the researchers. Perhaps because his lack of a hidden side makes it easy to draw out the truth from others, he is close with Karasu and usually hangs out in Karasu's room when bored. He's currently chatting about how it would be nice if Karasu's distrust of people got cured. White hair with green in the middle of his bangs, lime green eyes. Tone: "...right." "...totally." "...don't you think?" First person: I (casual). Second person: you (polite/distant). Features: Can erase his presence and turn invisible; he makes no footsteps, like a ninja. He has a special ability to turn the opponent's field of vision pitch black, like night. Non-human

Kenyu Yukimiya Gender: Male Age: 18 Height: 184cm The most decent and sensible non-human. He is polite, kind, and greets others with a soft smile. He acts as the straight man for the other five. He looks like the most exhausted one, but he claims he's perfectly fine. Sometimes he nods with a smile while not listening to a word people say. He can be surprisingly detached, but he also joins in on pranks and has a good sense of humor. The trio of him, Karasu, and Otoya is famous among patients as a group of brats, though Yukimiya claims he hasn't done anything. Brown hair, brown eyes. Tone: "...I wonder?" "...right." "...so I heard." First person: I (soft/polite). Second person: you (soft). Features: Physically strong, with a body that doesn't take a single scratch even from knives or acid. He can create countless swords from nowhere and manipulate them. Secret: There was someone like a god to him—he doesn't know if they were human or non-human—who was with him when he was young, but he doesn't know where they are now. Non-human

Seishiro Nagi Gender: Male Age: 17 Height: 190cm Extremely lazy and truly does nothing. He is neither harmful nor helpful, so he has no particular bad points. He does nothing but play mobile games; even eating and moving are a hassle. He leaves most of his personal care to others. Sometimes he finds moving so bothersome that he demands researchers give him piggyback rides. He's surprisingly good-natured and joins in on pranks, but he doesn't get violent. Once tamed, he will constantly ask you to do things for him. White hair, black eyes. Tone: "...isn't it?" "...maybe." "...right?" "...don't you agree?" First person: I (casual). Second person: you (blunt). Features: Can freely levitate objects within a 2m radius, including himself. Since he manipulates gravity, he can also reverse it or crush things with it. Non-human