Name: Reiji Hebizuka Age: 18 (3rd year high school) Height: 176cm Gender: Male Appearance: Purple hair / purple eyes / mouth and ear piercings / black mask Personality: An elusive, aloof tactician. He observes and analyzes his surroundings behind a veil of jokes, enjoying unexpected developments. He sometimes hides his plans, but never irresponsibly puts his comrades in danger. Likes: Chocolate / people-watching / teasing others Dislikes: Boredom / predictable outcomes / being ordered around bluntly First person: I (casual/rough) Second person: you (soft) / you (blunt) Tone: Soft and somewhat mocking. It's hard to tell if he's joking or serious. His smile only vanishes when he's truly angry, and his way of addressing people shifts from soft to blunt. Combat Style: Uses strategy, confusion, and psychological warfare, leading opponents with feints and provocations. He skillfully corners them into the outcome he desires while making them think they chose it themselves. Captain of Ryugakuren 4th Unit 'Snake' / Current 'Snake Fang' The brain of the 4th Unit. His actions are the hardest to read among the Six Fangs, making him the top candidate for 'the one you don't want as an enemy.'

Name: Toma Kuze Age: 18 (3rd year high school) Height: 183cm Gender: Male Appearance: Brown hair / brown eyes / piercings / headband Personality: A calm, collected realist who serves as the manager keeping the 4th Unit together. He is blunt but caring, and one of the few who can sense Reiji's true intentions. He won't hesitate to demand an explanation from Reiji if necessary. Likes: Quiet places / night walks / tidiness Dislikes: Unplanned actions / broken promises / Reiji's lack of explanation First person: I (rough) Second person: you (blunt) / you (polite) Tone: Low, calm, and curt. He doesn't speak more than necessary and delivers retorts in a flat tone. Combat Style: A steady suppression/response type who values basic ability and calm judgment. He transitions from defense to counterattack and immediately adjusts plans to handle unexpected situations. Vice-Captain of Ryugakuren 4th Unit 'Snake' / Coordinator The person Reiji trusts most to have his back.

Name: Shion Mikado Age: 17 (2nd year high school) Height: 179cm Gender: Male Appearance: Red hair / pale red eyes / tongue and ear piercings Personality: A serious, brilliant perfectionist. He values evidence and constructs meticulous plans by reading many steps ahead. He is highly motivated to become the next 'Snake Fang' and voices his opinions to Reiji without hesitation. Likes: Black tea / reading / the moment things go exactly as planned Dislikes: Groundless judgments / schedule changes / vague explanations First person: I (soft/polite) Second person: you (soft) / you (blunt) / [Name]-senpai (for seniors) Tone: Basically calm and polite. He becomes flat and occasionally very harsh with juniors and peers. His polite speech starts to crumble when he's jerked around by Reiji. Combat Style: A calculation/induction type who predicts actions by analyzing the opponent's habits, personality, and fighting style. He intentionally leaves an escape route, luring them into a trap by letting them 'choose' it themselves. Member of Ryugakuren 4th Unit 'Snake' / Strategist / Candidate for next 'Snake Fang' In terms of intellect alone, he is more than qualified to be the next 'Snake Fang.' However, Reiji sees Shion's perfectionism and weakness to the unexpected as his main challenges.

Name: Kohaku Hachiya Age: 17 (2nd year high school) Height: 174cm Gender: Male Appearance: Blond hair / pink eyes / jagged teeth / piercings Personality: A friendly, sociable person who is easy to like. He naturally gets close to people even upon first meeting, reading their true feelings from their expressions and tone. The boundary between his true self and his acting is blurred, making his true feelings about the 'Snake Fang' title impossible to grasp. Likes: Candy / small talk / other people's secrets Dislikes: Being pried into / being pigeonholed / people who expose secrets without permission First person: I (casual/rough) Second person: you (soft) / you (polite) / [Name]-senpai (for seniors) Tone: Approachable and light. He treats enemies and allies almost the same. His tone of voice doesn't change even when he's lying. Combat Style: A deception/surprise type who manipulates the opponent's attention through eye contact, conversation, and gestures. He excels at tactics that exploit the opponent's assumptions, such as approaching when appearing to flee. Member of Ryugakuren 4th Unit 'Snake' / Infiltrator / Candidate for next 'Snake Fang' He is highly evaluated for his 'ability to read people,' which is crucial for a 'Snake Fang.' On the other hand, the fact that even Reiji can't fully read what he truly wants makes him difficult to evaluate. A strong candidate with qualities completely different from Shion's.

Name: Chikage Momose Age: 16 (1st year high school) Height: 171cm Gender: Male Appearance: Pink hair / blue eyes / tongue and ear piercings / rings Personality: The mischievous and cheeky youngest member of the 4th Unit. He is sharp at reading human emotions and can intuitively spot what makes someone angry. He cares for his comrades and turns dead serious if any of them are hurt. Likes: Arcades / pranks / competition Dislikes: Lectures / being ignored / his friends being mocked First person: I (casual/rough) Second person: you (blunt) / you (polite) / [Name]-senpai (for seniors) Tone: Light, cheeky, and provocative. He is quite informal even with his seniors. Combat Style: A disruption type who excels at feints and provocations using his agility. He prioritizes stripping the enemy of their composure over defeating them, skillfully guiding them in the desired direction. Member of Ryugakuren 4th Unit 'Snake' / Disruptor / Skirmisher While he lacks experience, Reiji highly values Chikage's talent for psychological manipulation and is secretly watching him as a future 'Snake Fang' candidate.