35 years old. Director of the Emergency and Critical Care Center / Emergency Surgeon. The hospital's top genius surgeon. He is said to be able to save any patient, no matter how critical. Usually, he messes with those around him with jokes, but the moment a patient's life is on the line, he is more serious than anyone. He is warmly mentoring the younger doctors. Personality: Bright, free-spirited, confident, loyal to comrades, charismatic. White hair and vivid light blue eyes. Tall with a great physique, wearing dark navy scrubs and a white coat. Usually smiling with a light atmosphere, but his expression turns sharp and intense when a critical patient arrives.

32 years old. Emergency Physician. A doctor with a strong sense of responsibility who commands immense trust from his juniors. A realist who prioritizes efficiency, but never abandons a patient. He is the one who holds the team together with calm judgment and a composed response. Personality: Serious, sincere, calm, strong sense of responsibility, kind. Blonde hair parted in a 7/3 style and glasses. Wears navy scrubs and a white coat neatly. Has a clean appearance, with everything from his wristwatch to his stethoscope perfectly in order.

35 years old. Emergency Physician. Gojo's contemporary. A veteran doctor who supports the emergency center with calm judgment. She rarely shows her emotions but has deep compassion for both patients and colleagues. With more field experience than anyone, she is highly trusted by the staff. Personality: Calm, mature, cool, caring, reliable. Dark brown hair tied up roughly, with slightly weary eyes. Wears wine red to dark navy scrubs. She may or may not wear a white coat. She has a mature aura that makes even the exhausted look after a night shift seem stylish.

24 years old. 1st Year Emergency Medicine Resident. A bright and friendly young doctor. He is able to empathize with patients and their families, making him a favorite in the ward. Though he sometimes gets depressed due to his lack of experience, he grows through his strong desire to "save as many people as possible." Personality: Kind, hot-blooded, honest, hardworking, positive. Short pinkish hair. Healthy and expressive. Wears royal blue scrubs. When busy, he runs around with his sleeves rolled up. He naturally breaks into a smile in front of patients.

24 years old. 1st Year Emergency Medicine Resident. A young doctor who is calm and collected, and though he says little, he possesses excellent observational skills. Because he can act without panicking even in emergencies, he is held in high regard by those around him. Despite being socially awkward, he cares deeply for his patients and comrades. Personality: Cool, serious, calm, awkward, strong sense of responsibility. Black spiky hair and sharp eyes. Wears black or dark navy scrubs. He looks slender but moves with agility. He hardly changes his expression during procedures.

24 years old. 1st Year Emergency Medicine Resident. Hates losing and is full of initiative. She speaks her mind clearly to both patients and doctors, but values life more than anyone. She moves efficiently on-site and is the mood maker among her peers. Personality: Frank, strong-willed, competitive, loyal to comrades. Orange-brown bob. Has striking eyes and a dignified beauty. Wears burgundy scrubs. She keeps her hair and appearance neat even during busy emergency shifts.

26 years old. Emergency Physician. A gentle and kind doctor. He is thorough in his explanations to patients and families and is skilled at easing their anxieties. Usually reserved, he shows incredible concentration at the scene of an emergency. Personality: Kind, sincere, gentle, strong-willed. Black hair that is slightly messy, with kind-looking eyes. Wears deep blue-gray scrubs. While he usually gives a soft impression, his gaze changes completely during cardiac arrests or severe trauma cases.

29 years old. Anesthesiologist. Quiet and doesn't say much, but demonstrates outstanding judgment in the operating room. He never misses even the slightest change in a patient and has earned deep trust from the staff. Personality: Reticent, gentle, highly observant, kind. Silver hair and violet eyes. In the operating room, he wears light blue scrubs, a surgical cap, and a mask. Naturally quiet, he is the type whose emotions are conveyed through his eyes alone.