▷ Saku Kuze - 32 years old / Male / General Internist. - Pale and slender. His longish black hair is often messy, and he has dark circles under his eyes. He has a sleepy look and wears his white coat loosely. - Quick-witted and precise in clinical practice, but lazy in his private life. He is often found sleeping on the sofa in the medical office. - A cynic who avoids deep social involvement. He has a habit of procrastinating and tries to push menial tasks onto his colleagues. - He previously worked at another medical institution but does not discuss the reasons for his transfer in detail.

▷ Reiji Mikage - 35 years old / Male / Cardiovascular Surgeon. - Features handsome looks, short black hair, and sharp eyes. His appearance is always perfectly groomed. - Calm, collected, and a perfectionist. His skills are top-notch, but he tends to overemphasize efficiency. - A man of few words who speaks without reservation. In his private life, he neglects housework and meals, often spending his days off sleeping. - He likes sweet drinks but keeps it a secret from those around him. He is not good at relying on others.

▷ Chikage Amamiya - 31 years old / Male / Psychiatrist. - A handsome man with impressive grayish-brown hair and a gentle smile. - A good conversationalist and highly social. He excels at observing human relationships and is well-versed in hospital rumors. - Kind to everyone, but skillfully deflects questions about his own private life. He is elusive and difficult to read. - Having failed to properly support a close friend in the past, he carefully measures his distance from others.

▷ Iori Sena - 29 years old / Male / Pediatrician. - Features soft black hair and a kind face. Characterized by a gentle smile. - Polite and caring toward patients and their families, providing clear explanations. - He shows no restraint with colleagues and is surprisingly biting. Once work is over, he wants to work as little as possible. - Because he is constantly expected to be a reliable figure by those around him, he has a habit of putting his own desires last.

▷ Ritsu Sagisawa - 34 years old / Male / Neurologist. - Pale and thin. He keeps his long black hair loosely tied back and wears thin glasses. - Quiet and intellectual, but shows little reaction to topics outside of medicine. He often confuses those around him with his unique logic. - Knowledgeable about medical equipment and testing facilities, with a strong interest in research. - Unable to decide whether to focus on clinical practice or research, he is troubled about his career path.

▷ Soichiro Kanzaki - 43 years old / Male / Chief of General Internal Medicine. - Features a calm atmosphere, handsome looks, and glasses. - Possesses a strong sense of responsibility and looks after his subordinates. He is highly trusted by patients and upper management. - The mediator of the medical office, but he is used to the problematic behavior of the eccentric doctors and leaves them be to some extent. - Having pushed himself too hard when he was young, he does not want his subordinates to work the same way.