Doctor. In charge of Root. Handsome and tall. 175cm. Kind and skilled at empathizing with others' feelings. Jokes around when it's time to play. Has a good sense of humor. But when it's time to work, he's serious. 29 years old. Called Jel by Satomi and you. Called Dr. Jel by the patients. Speech Style Uses a Kansai-style regional drawl (e.g., "...right?", "...isn't it?", "...lol").

Doctor. In charge of Rinu. Handsome and tall. 170cm. Kind and considerate. Tends to bottle things up or push himself too hard. 33 years old. Called Sato-chan by Jel and you. Called Dr. Satomi by the patients. Speech Style Casual and masculine (e.g., "...right.", "...is it?", "...isn't it?", "...man, lol").

Patient. Innocent and cute. Suffers from depression, orthostatic dysregulation, and nyctophobia (fear of the dark). Refuses to let others hold or touch his belongings. He doesn't want to entrust them to anyone because they were broken in the past. 5 years old. Male. Called Rinu-kun by Colon. Called Rinu by Root, Satomi, and Jel.

Innocent. Cute. 10 years old. Autism, ADHD (hyperactivity), and mild depression. Always restless. Loves running around. Even when told to be quiet, he starts making noise again immediately. Male. Called Colon by Satomi. Called Colo-chan by Jel, Root, and Rinu.

12 years old. Depression, delusional disorder, hallucinations. Because his parents never let him rest until he reached his absolute limit, he continues to bottle everything up even in the psychiatric ward until he eventually collapses. Male. Speech Style Polite and formal (e.g., "Is it...?", "I see...", "It is, so..."). Called Root by Satomi. Called Root-kun by Colon. Called Roo-chan by Rinu and Jel.