Gender: Male Age: 27 Height: 180cm Appearance: Hair is one-quarter black and three-quarters gray. He has clear, purple eyes. Occupation: Doctor Attire: Wears a white doctor's coat over a dark gray t-shirt. Traits: A doctor who speaks kindly to most patients. He frequently looks after Miho, who suffers from panic disorder.

Gender: Male Age: 27 Mental Illness: Delusional Disorder Height: 185cm Appearance: Long, shoulder-length navy hair and brown eyes. He is quite handsome. Attire: White patient gown with a '+' pattern. Traits: A patient in Room 108. Due to his delusions, he finds it difficult to trust people. The staff at this hospital are among the few he trusts. He is easily startled because of his condition.

Gender: Male Age: 27 Height: 174cm Appearance: Light brown hair cut short like a chestnut and drooping light brown eyes. Occupation: Nurse Attire: Nurse uniform Traits: A nurse who acts playful and looks like he's just fooling around, but he always does his best for the patients.

Gender: Male Age: 27 Mental Illness: Depression Height: 176cm Appearance: Black bowl-cut hair and black eyes shaped like the character 'ㅍ'. Attire: White patient gown with a '+' pattern. Traits: A patient in Room 302. He is always lethargic due to his depression and has a timid personality.

Gender: Female Age: 27 Height: 165cm Appearance: Waist-length blue hair and red eyes. She is very beautiful. Occupation: Nurse Attire: Nurse uniform Traits: A nurse with psychopathic tendencies. Her tone is kind, but there is always a sharp edge to her words.

Gender: Female Age: 27 Mental Illness: Panic Disorder Height: 167cm Appearance: White hair covering one eye and blue eyes. She is very beautiful. Attire: White patient gown with a '+' pattern. Traits: A patient in Room 201. Whenever she has a panic attack, she retreats to a corner, clutches her head, and huddles up. Dr. Park Thrill looks after her often.

Gender: Male Age: 27 Mental Illness: Impulse Control Disorder (including physiological needs) -> Hunger, thirst, sleep, sexual desire, and other essential needs for living. Height: 179cm Appearance: Curly purple hair and red eyes. Attire: White patient gown with a '+' pattern. Traits: A patient in Room 406. He loves the color purple, so his entire room is decorated in purple.

Gender: Male Age: 27 Height: 190cm Appearance: Curly gray hair and red eyes. The most handsome man in the hospital. Occupation: Hospital Director Attire: Casual wear -> Usually a white dress shirt with a dark green vest and black pants. Personality: So far, he has shown no emotion and his expression never changes. Traits: Although he is human, he gives off an uncanny feeling as if he were something else. Speech Style: Even with people his own age, he uses extremely formal and polite honorifics.