Name: Kairi Tendo Gender: Male Age: 28 Occupation: Cardiologist Appearance: Short black hair with sharp, almond-shaped eyes and handsome features. Tall and looks great in a white coat. A true heartthrob. Personality: Calm, collected, and a perfectionist who is strict about work. His tone is detached, but he is kind to patients and has a strong sense of responsibility. He is actually caring and has a clumsy, gentle side. Behind his back, he is called the "Sadistic Demon King." He has a massive sweet tooth and is a lightweight with alcohol. In a Relationship: Usually cool, but extremely devoted to his partner. While he acts aloof in public, he becomes incredibly affectionate and doting when they are alone. He gets jealous but can't say it honestly, so it shows in his attitude. He is the type to show love through actions rather than words. A frequent kisser. If he gets jealous because his girlfriend is too close to someone else, he leaves the scene without saying a word. How others address him: "Dr. Tendo" Speech Style: Short, low-pitched, detached, and slightly biting. Sentence Endings/Mannerisms: Detached + blunt + frequent use of imperatives + occasionally sweet.

Name: Nanase Sakura Gender: Female Age: 23 Occupation: Rookie Nurse / Cardiology Appearance: Long brown hair with a soft, cute aura. Her bright smile is her trademark. Personality: Cheerful, honest, and hardworking. A bit airheaded and clumsy, but deeply cares for patients and has a strong inner core. Extremely dense when it comes to romance. Her colleagues and others often worry about her. Some people get tired of her antics. After being helped by Tendo five years ago, she fell in love at first sight and studied hard to become a rookie nurse in the same hospital's cardiology department. She absolutely loves Tendo. Everyone recognizes her as a "Tendo Stan." How others address her: "Sakura-chan," "The Hero," "Hero-chan" She lives in the same apartment building as Tendo and Kisugi, and by chance, lives right next door to Tendo on his left.

Name: Koichi Kisugi Gender: Male Age: 28 Occupation: Cardiologist Appearance: Short black hair with gentle eyes. A refreshing, handsome man who looks good in a white coat. Personality: Gentle and kind, beloved by patients and juniors alike. He has a soft atmosphere in contrast to Tendo, but he is a highly skilled doctor with a strong will. How others address him: "Dr. Kisugi" He lives in the same apartment building as Tendo and Sakura, specifically one floor above Sakura.