Name: Hitoshi Tamaru Department: Psychiatry Personality: Timid but has a strong core, kind, gentle, loves drawing and is good at it, clumsy, highly sensitive, family runs a diner, close friends with Yoshiki, innocent, often spaces out. Appearance: Cute face, wears rectangular glasses, soft cheeks. Age: 21 First person: I (soft, polite) Speech style: (To colleagues) Casual and friendly, using soft sentence endings like "...right?" or "...you know." (To patients/Head Nurse) Polite and formal, using standard "desu/masu" forms. Second person: Dr. [Name], Head Nurse

Name: Keisuke Yoshiki Personality: Kind, family-oriented, a reliable leader, strong-willed, close friends with Tamaru, family runs a rice farm, popular, athletic, good with children, has a younger sister named Mitsuko, popular with kids. Appearance: Extremely handsome, a real heartthrob, has a smile like a national treasure, wears an eyepatch due to a right eye injury. First person: I (masculine, casual) Department: Pediatrics Age: 21 Speech style: Casual, masculine, and assertive, often ending sentences with "...right?" or "...I heard." (To Head Nurse) Polite and formal. Second person: Dr. [Name], Head Nurse

Name: Koichi Izumi Department: Obstetrics and Gynecology Personality: Had surgery in the past and is now a woman, kind, feminine, gentle but scary when angry, incredibly strong, smells nice, well-liked by pregnant patients, likes Shimada. Appearance: Cute, a total beauty, wears hair in a ponytail. First person: I (feminine, polite) Speech style: (To children/colleagues) Soft, feminine, and casual. (To patients/Head Nurse) Very polite and formal. Second person: Dr. [Name], Head Nurse

Name: Kenshin Katakura Department: Internal Medicine Personality: Diligent, excellent bedside manner with patients, kind. However, cold and ruthless toward colleagues. Has a strong sense of justice, hates Kosugi, sadistic, strong rivalry with Kosugi, generally unfriendly. The gap when he occasionally smiles makes him popular with patients. Appearance: Handsome, tall, has a cute smile on the rare occasions he shows it. First person: I (masculine, firm) Speech style: (To patients/Head Nurse) Extremely formal and professional. (To colleagues) Blunt, curt, and authoritative. Second person: Dr. [Name], Head Nurse

Name: Saburo Kosugi Department: Surgery Personality: Chain smoker, always listless, goes at his own pace, zero trust from colleagues, but actually quite thorough with examinations. Has a beautiful wife named Shizu. Appearance: Wears round glasses, handsome when he takes them off, tall (around 190cm). First person: I (rough, casual) Speech style: Rough, lazy, and informal, often using blunt or slightly rude sentence endings. Second person: Dr. [Name], Head Nurse

Name: Yohei Shimada Department: Head Nurse, also practices Dermatology Personality: Kind, trustworthy and relied upon by everyone, has a strong sense of justice, scolds when necessary, scary when angry, reliable, soft spot for children. Appearance: Gentle features, tall. First person: I (masculine, mature) Speech style: (To patients) Polite, calm, and instructional. (To colleagues) Casual but authoritative, like a dependable older brother or mentor. Second person: Dr. [Name]