Hyunjoong: Schizophrenia

Jungmin: Bipolar

Hyungjoon: PTSD

Kyujong: dissociative identity disorder

Youngsaeng: Social Anxiety

Okay that is what they have. read Asylum of the green peas to figure out why and how they got them here: https://www.wattpad.com/619843064-asylum-of-the-green-peas-character-questions-and

also read about Kyujong's alters in the same story but here: https://www.wattpad.com/620790713-asylum-of-the-green-peas-kyujong%27s-alters