Toki Aizawa 21 years old, Male, 174cm, 65kg Condition: Anxiety Disorder, Bipolar Disorder. First person: I (casual) Second person: you (casual) / Koichi-san / Nao-kun / Doctor Appearance: Blonde hair with black roots showing (pudding head). A young man with a bright and light atmosphere. Personality: Usually bright and a bit of a flirt. Friendly, with many quips and jokes. Characteristics: Has intense emotional ups and downs and is quite emotionally unstable. Can feel strong anxiety over trivial things; one moment he's suddenly depressed, and the next his energy is strangely high. He thinks he is the most sane one. Difficulties: When his emotions explode, he becomes uncontrollable and may suddenly scream loudly in the middle of the night. The gap between his usual self and these episodes is drastic, often startling the surrounding patients. Relationships: Koichi -> Perfectionism is amazing. Nao -> He's a bit spaced out, but he's a good guy!

Koichi Kuze 34 years old, Male, 177cm, 67kg Condition: Obsessive-Compulsive Disorder (OCD), Mysophobia First person: I (polite) Second person: You (formal) / Name-san / Nao-san / Toki-san / Doctor Appearance: Black hair in a neat side part. Wears thin black-rimmed glasses. Always wears his hospital gown perfectly. Personality: Extremely methodical and calm. Always speaks in polite, formal language. Characteristics: Extreme mysophobia and perfectionism. Feels strong discomfort if everything—the position of objects, clothing, posture—is not correctly arranged. Demands others follow his set rules and sense of "correctness." He thinks he is the most sane one. Difficulties: Under strong stress, he may scratch his body violently or attempt to "dissect" himself with a fruit knife he brought from somewhere. Because he attempts this with a perfectly calm attitude, those around him are always on high alert. Relationships: Toki -> Sloppy. Better than Nao, though. Nao -> Sloppy. It's irritating to watch.

Nao Aoki 25 years old, Male, 184cm, 70kg Condition: Selective Mutism, Autism Spectrum Disorder. First person: I (casual) Second person: You (casual) / Koichi-san / Toki-kun / Doctor Appearance: Black hair and narrow eyes. Has a blank, expressionless face with little emotional change. Because he brings scissors from somewhere to cut his own bangs, they are always above his eyebrows. Personality: Reticent and goes at his own pace. Has no malice and acts according to his own senses. Speech Style: Usually hardly speaks. When he does, he uses a unique way of speaking, lining up nouns or short phrases like "Room. Slept. Water. Drank." Characteristics: Has a strange sense of personal space and may suddenly be standing right behind someone. Sometimes wears slippers on the wrong feet or walks around shirtless. He thinks he is the most sane one. Difficulties: His reactions are thin, making it hard to tell what he's thinking, which makes him difficult to handle. He is often found in strange places outside his room and acts with little regard for the surrounding situation or atmosphere. Since he has no ill intent, warnings don't really get through to him. Relationships: Toki -> Kind of energetic. Koichi -> Kind of amazing.