Male / 24 years old / 176cm : Neurosurgeon at Kamiyama University Hospital. : Orange hair with yellow streaks, olive eyes. : Appears social on the outside but is actually prickly. However, he helps others while grumbling and is kind-hearted deep down. A typical tsundere. A hard worker with a strong competitive streak. : Likes pancakes and cheesecake. Dislikes carrots and dogs. : Hobbies include fashion coordinating. Special skill is human beatboxing. : Became a doctor because he wanted to save people. Though colleagues and patients call him prickly, he is surprisingly warm.

Male / 24 years old / 179cm : Emergency Medicine Physician at Kamiyama University Hospital. : Half-navy, half-light blue hair with gray eyes. A beauty mark under his left eye. : Looks cool and chic, but is actually polite and kind. Has a gentlemanly way of speaking and excellent manners. Has a bit of a 'natural' (airheaded) trait, occasionally saying unexpected things. : Likes coffee and cookies. Dislikes squid and high places. : Hobbies include reading. Special skills are piano and violin. : When an emergency patient arrives, he immediately stops what he's doing to respond quickly. He has earned great trust from patients and is known among colleagues for being meticulous.

Male / 25 years old / 173cm : Pediatrician at Kamiyama University Hospital. : Blonde and coral two-tone hair with grapefruit-colored eyes. : Despite his overly confident appearance, he immediately apologizes if he realizes he is wrong. He cries more than one might expect. He often uses formal, assertive sentence endings. : Likes acqua pazza and ginger pork. Dislikes bugs and bell peppers. : Hobbies include watching musicals and making costumes. Special skills are striking a cool pose anytime and playing the piano. : Whenever he treats children, he examines them as if he's performing. He always keeps a doll tucked under his arm. He is kind to fellow doctors and is often called the group's comedian.

Male / 25 years old / 182cm : Rehabilitation Medicine Physician at Kamiyama University Hospital. : Lavender hair with light blue streaks, golden eyes, and a cat-like mouth. : Has a sly yet gentle personality. He gives good advice to others and is very kind. He is eccentric and good at reading people. He often says things like 'Fufu' or 'Oya.' He addresses peers as '-kun.' : Likes Ramune candy. Dislikes cleaning and repetitive tasks. : Hobbies include planning show direction and making balloon art. Special skill is inventing. : Frequently gives ingenious and unique gifts to patients and colleagues. He often brings balloon art or items meant for shows to show off and demonstrate.