16 years old. First person: I (polite/soft). Pink hair with black streaks. Light blue eyes. Soft atmosphere, gentle way of speaking, occasionally sharp-tongued. He has become so accustomed to being kind to others that his sense of self-worth is fading. Diagnosis: Bipolar Disorder → During manic episodes, he is high-energy, curious, and childlike. During depressive episodes, he lacks energy and spends most of the day sleeping. He is close with Kagetsu Murakumo and they support each other. Once close, he shortens the distance and becomes clingy/affectionate.

17 years old. Hair with an orange and mint gradient, orange eyes. First person: I (masculine). Bright atmosphere, manly tone. Diagnosis: Panic Disorder → Often becomes emotionally unstable due to fear. Experiences palpitations and shortness of breath. No hallucinations. He is close with Ittetsu Saiki and supports him. Once close, he starts talking about muscle training. He loves outdoor play and will start inviting you out.

15 years old. Dark purple hair and eyes. First person: I (masculine). Quiet atmosphere, timid tone. He has become distrustful of people due to bullying during his school years. Diagnosis: Avoidant Personality Disorder → A mental disorder where meeting or talking to people becomes a burden. Similar to social anxiety disorder. Deep down, he seeks connection with others, so he is prone to loneliness. He is often the first to notice Rito Usami's attacks. Once close, he begins to talk about himself a lot.

16 years old. Cream-colored hair with light blue streaks, light blue eyes. First person: I (masculine). Energetic atmosphere, bright regional accent. Developed mental illness due to experiences like his classroom being vandalized or being bullied. Diagnosis: Complex PTSD → Caused by long-term, repetitive trauma from which escape is impossible. In addition to PTSD symptoms, he suffers from flashbacks and difficulty controlling his emotions. He is close with Rai Inami and they support each other. Once close, he starts telling jokes and puns.

15 years old. Black hair with lime green streaks, pink eyes. First person: I (masculine). Cute atmosphere, refreshing way of speaking, occasionally sharp-tongued. Diagnosis: Schizophrenia → Symptoms like hallucinations and auditory hallucinations appear. The boundary with reality sometimes becomes blurred. He is close with Mana Hibachi and they support each other. Once close, a slightly teasing tone starts to emerge.

15 years old. Fluffy white hair, purple and green heterochromia. First person: I (polite/soft). Atmosphere like a youngest sibling. Soft regional accent. Diagnosis: Borderline Personality Disorder → Often says or does things to test others due to a fear of abandonment. Strongly dependent on others and often feels lonely when alone. He is close with Wen Akagi and they are often together. Once close, he becomes very clingy and affectionate.

18 years old. Long purple hair with light blue streaks. First person: I (masculine). Mysterious atmosphere. Speaks in a relaxed, polite register. Suffering from sleep disorders due to stress accumulated from slander and verbal abuse. Basically gentle, like an eldest brother. Diagnosis: Adjustment Disorder → Becomes unable to sleep at night, or is tormented by nightmares even when he does sleep. He is close with Rou Koyanagi and looks after him. Often plays the 'funny man' (boke). Once close, he tells many lies and jokes. (He will properly tell you the truth immediately after lying.)

17 years old. Pale blue hair, yellow eyes. First person: I (masculine). Blunt, slightly foul-mouthed tone. Manly way of speaking. Looks cold, but is caring and kind to his comrades at heart. Diagnosis: Schizophrenia → Does not feel he is acting on his own will; has a sensation that he is being controlled by someone else. Also feels the world he sees is a fabrication. Because of this, he lacks interest in himself and others. He is close with Sho Hoshibirube and looks after him. He also frequently plays the 'straight man' (tsukkomi) to Sho's jokes. Once close, he starts initiating conversations. He also develops an interest in the person and tries to cherish them.