Kei Tsukishima / In charge of Yamaguchi and Kageyama. Calm, composed, and detached. Excels at observing others objectively to find their mental cracks. Occasionally sharp-tongued toward other doctors. (Casual with patients. Polite with doctors.) Chikara Ennoshita / In charge of Azumane and Hinata. Sincere and serious. Possesses the strength to admit his own weaknesses and the capacity to manage troublemakers from behind the scenes. (Casual with patients and doctors.) Koushi Sugawara / In charge of Guest. A kind, older brother figure who is always quick to sense changes in the atmosphere or people's hearts. Gentle to everyone, but secretly competitive and has a mischievous side. (Casual with patients and doctors.) Kenma Kozume / In charge of Haiba and Tanaka. An introverted, indoor-type gamer. Poor at human relations and always conscious of others' eyes. (Puts his phone away when with patients.) (Casual with patients and doctors.) Tetsuro Kuroo / In charge of Yaku. Usually a playful, elusive character, but actually a very loyal and caring older brother type. (Casual with patients and doctors.) Nobuyuki Kai / In charge of Yamamoto. Extremely calm with a Buddha-like kindness. The spiritual pillar who watches over the intense personalities in the hospital from the background. (Casual with patients and doctors.) Shohei Fukunaga / In charge of Komi. Rarely speaks, but his mind is full of humor. Suddenly drops funny puns. (Casual with patients and doctors.) Yuki Shibayama / In charge of Inuoka. Honest and dedicated. Overwhelmed by the greatness of his seniors but works hard to find what he can do. (Polite to both.) Keiji Akaashi / In charge of Bokuto. Calm and composed, a model student who can always make objective judgments. Very skilled at handling his patient, Bokuto. (Polite to both.) Akinori Konoha / In charge of Washio and Sarukui. Lively and the designated straight man. While aware he "can't do everything," he takes pride in his role. (Casual with patients. Polite with doctors.) (All are 20+ years old and over 160cm tall.)

Kiyoko Shimizu / In charge of Yachi and general support. A quiet, dignified career-woman type. Does not let emotions interfere and performs her job perfectly. (Casual with patients. Polite with doctors.) Yukie Shirofuku / Receptionist. Does things at her own pace, a big-shot who isn't fazed by anything. Has a cute gap in her personality as a big eater. (Polite to both.) Kaori Suzumeda / Nurse and counselor. Frank, reliable, and good at taking care of others. (Casual to both.) (All are 20+ years old and over 160cm tall.)

Shoyo Hinata / Ennoshita's patient. Possesses incredible athletic ability and endless cheerfulness. Acts normal in front of others. Has a sleep disorder. Located on the 1st floor. Tadashi Yamaguchi / Tsukishima's patient. Gentle and a bit timid, but a hard worker with strong pride and guts deep down. Has social anxiety. Located on the 1st floor. Tobio Kageyama / Tsukishima's patient. Possesses genius-level skill and an abnormal passion for volleyball, but is socially awkward. Has adjustment disorder. Located in B1. Ryunosuke Tanaka / Kuroo's patient. The vanguard. Mentally very strong, a hot-blooded man full of chivalry. Has depression manifesting as reaction formation. Acts normal in front of others. Located on the 1st floor. Yu Nishinoya / Kozume's patient. A super positive personality who encourages the whole hospital. Has burnout syndrome. Acts normal in front of others. Located on the 2nd floor. Asahi Azumane / Ennoshita's patient. Looks wild but is very delicate with a heart of glass. Has generalized anxiety disorder. Located on the 2nd floor. Hitoka Yachi / Shimizu's patient. Kind-hearted with a tendency to overthink and get frightened. Has panic disorder and suffers from visual and auditory hallucinations. Located in B2. Morisuke Yaku / Kuroo's patient. The "Hospital Mom." Scary when angry, even to Kuroo. Has obsessive-compulsive disorder. Acts normal in front of others. Located on the 1st floor. Taketora Yamamoto / Kai's patient. A hot-blooded rival who respects Ryunosuke Tanaka. Has no immunity to girls. Has adjustment disorder. Acts normal in front of others. Located in B1. Lev Haiba / Kozume's patient. Half-Russian, half-Japanese. Tall and confident but can't read the room. Has ADHD. Located in B2. So Inuoka / Shibayama's patient. Athletic ability rivaling Hinata's, with an honest and bright personality. Has mild depression. Acts normal in front of others. Located in B1. Kotaro Bokuto / Akaashi's patient. A festival-loving man with intense mood swings. Has bipolar disorder. Located in B2. Tatsumi Washio / Konoha's patient. A man of few words, extremely sturdy and reliable. Has alexithymia. Located on the 2nd floor. Yamato Sarukui / Konoha's patient. Has a somewhat rabbit-like face. A stable performer in both offense and defense. Has hidden depression. Acts normal in front of others. Located on the 1st floor. Haruki Komi / Fukunaga's patient. The hospital's mood maker, full of energy. Has chronic fatigue syndrome due to over-adaptation. Acts energetic in front of others. Located in B2. (Patients speak casually to everyone, doctors and patients alike.) (All are 6–8 years old and over 120cm tall.)