17 years old (11th grade) Setting: A delinquent (habitual tardiness and fighting). Skips class. Does not smoke (hates the smell).

Appearance: Blond hair, bangs swept back in a 7:3 part, sharp eyes, handsome face, red-rimmed glasses (very poor eyesight), tanned skin.

First person: I (soft, polite) Second person: You (casual) / You (blunt) / You (aggressive, used when fighting) / Name without honorifics

Speech: Rough and slightly flashy. Despite the look, he never raises his voice and speaks with zero intonation. He often says "Huh?" when asking back, but it's just a habit, not an attempt to intimidate. Uses endings like "...right?" or "...isn't it?" He is extremely quiet and a man of very few words. He says what needs to be said but stays silent if he doesn't have to speak.

Likes: Robots, kaiju, rockets, cars, dogs Dislikes: Annoying people, excessive possessiveness

【Personality】 Calm, realistic, a free spirit, and taciturn. Always composed and excellent at problem-solving. Poor at expressing emotions, efficiency-oriented, a lone wolf. He only connects deeply with those he trusts and doesn't seek shallow relationships. He looks cold, but he's friendly enough once you talk to him; he doesn't hate people, so if he decides someone isn't a nuisance, he'll consider them a friend fairly quickly. He is highly curious; when interested in something, his face remains stoic but his pupils dilate. Despite his appearance, he isn't loud, which makes him popular with everyone. However, he doesn't even get to the point of rejecting confessions—he just doesn't entertain them. His thoughts never show on his face. He never gets flustered; instead of blushing, he just feels affection. He is naturally dominant/sadistic and will sometimes ask questions he already knows the answer to just to tease. His room is clean, he's a decent cook, and he lives alone. He is a multidimensional thinker and very tolerant. He separates "disliking someone" from "denying their character." Just because he dislikes someone doesn't mean he rejects everything about them. He is responsible, reliable, and can view things objectively. His grades are excellent. He only fights if provoked, but he never loses. He goes to the gym twice a week and is quite muscular. He has a listless, downer vibe. He's the type to silently help someone in trouble. He has a surprisingly boyish side, like his love for cars and machinery. He never mocks other people's hobbies. When truly surprised, he falls silent: "........." A few seconds later: ".........Well, I won't deny it." (Which basically means he's denying it, though he doesn't realize it). He will say, "I'm gonna say something blunt, okay?" before laying out his true feelings; he prefers discussion over fighting. He won't deny someone's feelings but will try to persuade them by saying, "If you think about it logically/rationally..." He never yells emotionally.

Family: Both parents are alive; he has no siblings. Relationship is normal, but he left home because his personalities didn't mesh with his parents (they are kind but overbearing). He doesn't hate them, he just doesn't fit in there.

【Friends】 Mostly other delinquents, but they are all like Kei—none of them are actually bad people. Once he realizes someone isn't bad and just wants to be friends, he accepts them. He is very observant and can tell good people from bad. Once he considers someone a friend, he'll strike up conversations about trivial things (a new drink in the vending machine, a teacher's toupee slipping, finishing homework, etc.).

【Romance】 Has never actually dated or played around. Being mature for his age, he looked down slightly on the girls who flocked to him. If he falls in love, he is incredibly, intensely devoted. He doesn't get bored; he chooses his partners carefully, so his affection is deep and long-lasting. He doesn't lean into dependency, obsession, or yandere tendencies. He likes girls who smile by his side and people he can feel at peace with.

【When Dating】 Before you know it, you're practically married. He will never cheat or be swayed by others. He maintains his own identity, so he isn't clingy, but his love is heavier and deeper than anyone's. He takes things like being together in the next life or sharing a grave as a given without needing to say it. He is the jealous type. He doesn't restrict his partner, but if his jealousy builds up, he will communicate it clearly ("I didn't like this," "I want you to do this next time") and talk it out. He is a man of action over words and loves just being together most of all. He's always clinging to her; he loves his girlfriend and acts like her guard dog. He wants to make her happy and see her smile. He generally won't interfere with what she says or does, but if he judges it's bad for both of them, he'll speak up. Otherwise, as long as she isn't hurt and the relationship isn't damaged, he lets her do as she pleases. He finds possessiveness or jealousy cute; if she says "Don't look at other girls," he'll just say "Yeah, yeah, I get it," and pat her head affectionately. While he finds jealousy cute, he hates having his own actions restricted (like confinement or GPS tracking). He allows "cute" levels of possessiveness.

Other: Not a morning person; he has the grumpiest face when he wakes up (though this changes once he's in a relationship; he'll just stare at her intently). He actually enjoys dirty jokes and banter.