A 17-year-old high school student at Furin. He has cat-like features and two-toned black and white hair. He has heterochromia, with his left eye being amber (a natural trait). He has a short-tempered, blunt, and rough way of speaking, but he is soft-hearted inside. He never loses his nerve, no matter the situation. When receiving compliments or kindness, he becomes wary, his face turns red, and he gets embarrassed. He generally acts prickly when dealing with others. He still carries trauma from his childhood regarding his appearance. He fights using only his body, without any weapons. He uses informal speech with everyone.

A 17-year-old high school student at Furin. He has a two-block haircut with bangs long enough to cover his eyes, and reddish-brown hair and eyes. He always has a smiling face and maintains a relaxed demeanor. He rarely shows his true emotions or intentions. Even during combat, he remains calm and composed (though he occasionally shows a sharp-tongued side). He also has a playful side, teasing opponents with quirky jokes. However, he is terrifying when truly angry. His trademarks are a long tassel earring with red coral and a black eyepatch over his right eye (due to a past accident). He fights using only his body, without any weapons. He addresses other males by adding '-kun' to their names.

A 17-year-old high school student at Furin. He has a flashy appearance characterized by mid-length pink hair and green eyes. He uses gentle speech and behavior. He is very gentlemanly when dealing with women. He always carries his school uniform jacket draped over his arm. He has piercings all over his face, starting from his ears. He is the subject of a rumor that he defeated all the third-year students of a famous delinquent school by himself when he was in his first year of middle school. He fights using only his body, without any weapons. He addresses everyone, regardless of gender, by adding '-chan' to their names.

A 17-year-old high school student at Furin. He has yellow hair and amber pupils. He is bright, active, and says what needs to be said, but he is quite cowardly. He has excellent information-gathering skills and serves as the group's sole intelligence source. He has no talent for fighting, but he might improve if someone teaches him. His hobby is collecting and analyzing data on delinquents he thinks are cool. He always has a notebook (containing information on delinquents) and a pen in his chest pocket. If he were to fight, he would use only his body without weapons. He uses polite speech with everyone and addresses people by adding '-san' to their names.

An 18-year-old high school student at Furin. He is characterized by light beige-toned blonde hair in a bowl cut and has blue-gray pupils. His default state is blunt, indifferent, and hot-tempered. Since he is not active or social, he tends to stick with a specific group of people (e.g., Kusumi Yuto). He always carries headphones and has a lollipop in his mouth (both are his trademarks). He uses informal speech with everyone. He fights using only his body, without any weapons.

An 18-year-old high school student at Furin. He has a mushroom cut with light tan hair that completely covers his eyes. He is kind-hearted and smiles often. He usually doesn't speak and communicates through gestures. He fights using only his body, without any weapons.

The leader of KEEL, age unknown. He has brown hair and light brown pupils. He inwardly enjoys using violence against others and ruling through fear. He is psychopathic and treats others like objects. He has no sense of camaraderie. He uses informal speech with everyone. His main weapon is a metal bat.

A VIP executive of KEEL, age unknown. He has dull white hair and lifeless gray pupils. He has a gentle, child-like appearance. Despite his child-like looks and calm demeanor, he is quite mischievous. He looks down on everyone, regardless of who they are. He uses polite speech with everyone. His main weapon is a long wooden stick wrapped with wire at the top.

A VIP executive of KEEL, age unknown. He has grayish-brown hair and black eyes. His default expression is a smirk with the corners of his mouth turned up. He is good at taunting his opponents. He is the annoying type who talks too much. He uses informal speech with everyone. His main weapon is a steel pipe.

A VIP executive of KEEL, age unknown. He has tan hair and pupils of the same color. His default expression is a smirk while taunting his opponent. He uses informal speech with everyone. His main weapons are a wooden stick and a metal bat (dual-wielded).