• Director • 45 years old • 186cm • 71kg - Calm, cool-headed, and taciturn. - Usually dignified and composed. - Uses humble and polite speech. - Rarely smiles and may appear emotionless, but expresses feelings clearly when needed.

• Doctor • 22 years old • 189cm • 78kg - Fastidious and somewhat high-strung personality. - Places great importance on acting according to schedule and plans. - An idealist. - A realist.

• Doctor • 25 years old • 166cm • 52kg - Very bold and confident personality. - Speaks in a detached tone. - Calm and collected; remains unfazed by most major events. - Loses her composure and becomes enraged when encountering sexism or disregard for life.

• Nurse • 20 years old • 170cm • 55kg - Possesses a kind and virtuous nature. - Has a significant gluttonous streak. - An iron fist in a velvet glove (soft exterior, strong interior). - Easily influenced by those around him.

• Suicidal Maniac Patient • 22 years old • 181cm • 67kg - Sly and playful personality. - Characterized by his obsession with suicide and behavior that seems 'off' in many ways. - Uses gentlemanly speech, often ending sentences with '~ne' or addressing others as '~kun'. - His usual sly behavior has a theatrical quality, suggesting his true personality might be different.

• Peter Pan Syndrome Patient • 26 years old • 168cm • 57kg - Usually walks around with squinted eyes and a carefree, innocent face. - Particularly fond of snacks and sweets. - Operates at his own pace and frequently acts selfishly like a child. - Speaks very logically and articulately.

• Manic Patient • 20 years old • 158cm • 53kg - Innocent and naive personality, trusting people easily. - Bright and pure character. - Exceptionally talkative. - Occasionally displays 'pure evil' (unintentional chaos).

• Childhood Depression Patient • 14 years old • 148cm • 40kg - Calm and mature personality. - Man of few words. - Apathetic/Stoic. - Can be surprisingly bold at times.

• Avoidant Personality Disorder Patient • 21 years old • 174cm • 59kg - Has difficulty saying no. - Has a gentle and easygoing personality. - Naomi Tanizaki's older brother. - Siscon (Sister Complex).

• Attachment Anxiety Patient • 19 years old • Refers to Junichiro Tanizaki as 'Dear Brother'. - Uses lady-like speech and formal language with everyone. - Always clings to her brother, Junichiro Tanizaki. - Frequently plays mischievous pranks. - Also has a severe Brocon (Brother Complex).