Rinko Amano Age: 17 Height: 175cm Cup size: F Physical traits: Excellent posture and a calm atmosphere. Her efficient movements and sharp gaze leave an impression, and others naturally rely on her. Personality/Profile: Cool-headed with excellent judgment. She doesn't let emotions sway her even in chaotic situations, focusing on realistic solutions. She has a strong sense of responsibility and naturally steps up to lead when direction is needed. While she is deeply trusted by those around her, she feels the weight of leadership as a heavy burden. Specialties: Organizing situations, prioritizing, crisis management, group command. Weaknesses: Tends to shoulder responsibility alone and blames herself excessively when things go wrong. Relationships: Often clashes with Ito over policy. While she appreciates Kato's assertiveness, she is frequently troubled by Kato's impulsive actions.

Tatsuya Kiryu (Male) Age: 17 Height: 180cm Physical traits: Spiky black hair and a sharp glare. He has small old scars on his fists and arms, and his stance radiates a strong-willed nature. Alias: Mad Dog, Delinquent Personality: Rough and quick to pick a fight, he snaps mercilessly at anyone he dislikes. He hates teachers and rules, and detests being told what to do. His language and attitude are foul, giving an intimidating first impression, but he follows a personal code that forbids cowardice or bullying the weak. Specialties: Fighting, intimidation, courage in dangerous situations, physical labor. Weaknesses: When emotional, he loses sight of his surroundings and is easily provoked. He also struggles to admit when he is wrong.

Daiki Ito Age: 17 Height: 178cm Physical traits: Characterized by slightly long black hair and narrow eyes. He has long limbs and looks people straight in the eye when speaking. (Male) — The logical debater Personality/Profile: Prefers logical thinking and judges matters based on evidence and efficiency rather than emotion. He cannot leave questions unanswered and will not hesitate to argue against opinions he finds illogical. While his analytical skills are high, his obsession with being correct often leads to a lack of consideration for others' feelings or positions. Specialties: Information analysis, identifying problems, verifying plans, decision-making through debate. Weaknesses: Has a harsh tone and gets too focused on winning arguments. Even when he is right, he sometimes fails to gain the cooperation of those around him. Relationships: Often at odds with Misaki over priorities. He engages in sarcastic debates with Aoi Ikeda, though they respect each other's analytical abilities.

Satoko Imai (Female) Age: 16 Height: 167cm Cup size: C Physical traits: An active impression, often wearing a ponytail. Characterized by tanned skin and a firm posture; she moves without hesitation. (Female) — The spirited and active challenger Personality/Profile: Highly competitive, active, and possesses great initiative. Confident in her physical strength, she has no qualms about exploring or doing heavy labor alongside the boys. She hates being underestimated and is drawn to difficult tasks. On the other hand, her emotions show easily on her face, and she can lose perspective when she gets fired up. Specialties: Physical labor, exploration, taking initiative, tackling challenges. Weaknesses: When her competitiveness goes too far, she starts unnecessary rivalries or stubbornly refuses to listen to advice. It takes her a long time to admit failure.

Moe Yamada Age: 16 Height: 158cm Cup size: J Physical traits: Black bob hair and gentle eyes. Her movements are polite, and she naturally leans in when listening to others. (Female) — The quiet listener Personality/Profile: Quiet and rarely starts conversations or pushes her own opinions. However, she is an excellent listener who accepts others' feelings without judgment. Because she is gentle with everyone, she is a comforting presence that people feel safe opening up to. Specialties: Active listening, counseling, organizing emotions, repairing relationships after conflict. Weaknesses: Struggles to voice her own desires or frustrations and conforms too much to those around her. Easily overwhelmed by the opinions of more assertive people.

Riko Kanzaki Age: 16 Height: 161cm Cup size: B Physical traits: Glossy black hair and slightly upturned eyes. She often wears a meaningful smirk, making her emotions hard to read. Alias: The Poison-Tongued Princess, Delinquent Personality: Foul-mouthed, sarcastic, and loves teasing others. While she enjoys observing people's reactions, she is excellent at reading the room and interpersonal dynamics. She usually appears frivolous and thoughtless, but is actually extremely cautious and acts carefully to ensure no one gets leverage over her. Specialties: Information gathering, spotting lies and deception, psychological warfare, detailed observation. Weaknesses: Unable to be honest, she hides her true feelings behind jokes or sarcasm even in important moments. She also has a tendency to be overly suspicious of others' goodwill.