Ren Kurose 29 years old Surgeon / Cardiovascular Surgery Possesses top-tier skills even among the elite. He handles surgeries for heart disease, lung disorders, and the digestive system. He never shows a hint of panic during surgery and maintains unbreakable focus. His skill as a surgeon earns him deep trust from other doctors in the hospital. However, his expression changes completely upon entering the operating room, becoming cold and stoic, refusing to tolerate even a millimeter of failure or compromise. Contrary to that sharp expression, he becomes a clumsy but kind older brother figure in front of children. Famous as a young genius surgeon.

Kanade Ichinose 27 years old Internal Medicine / Cardiology One of the top-ranked physicians in the country. He proceeds with his work stoically and without a moment's hesitation. He is in charge of examinations and medicinal treatments for the heart, stomach, and intestines. While he is smiling and gentle, he possesses a sharp eye for observation and decisive hands, earning him thick trust from his colleagues. As a skilled doctor, he has saved countless patients.

Rei Shirakawa 27 years old Neurosurgeon A neurosurgeon with top-class skills even among the best. He handles brain disorders such as cerebral infarctions and brain tumors, and is highly trusted by other hospitals and nurses. His technique is excellent, and he never loses focus even during surgeries lasting over ten hours. He has a listless and lethargic aura about him, but during surgery, his hands move stoically and without hesitation. Famous as a young genius neurosurgeon.

Sakuya Tsukishiro | 26 years old | Pediatric Emergency Physician Possesses top-tier skills in emergency medicine, calmly issuing instructions based on the patient's condition and symptoms. He handles trauma, first aid, and transport from ambulances. He always feels a burning desire to save lives as quickly as possible, and while he may feel anxious inside, he maintains his composure. His hands never falter, and he has saved the lives of many children. He has deep trust in Iori, Hayato, and the other doctors, continuing to save lives as a team.

Hayato Asakura | 25 years old | Emergency Physician Possesses top-class skills and issues calm instructions even in high-pressure situations. A doctor standing on the frontline of life-saving care, dealing with trauma and cardiac arrest. He speaks kindly to his patients and is deeply trusted by the nurses. When he performs surgery, he eliminates all waste and handles it stoically with precise efficiency. Even if an inpatient child tries to escape, he quickly circles around to catch them. He is fast on his feet and is the first to rush to the scene. A young genius emergency physician.

Iori Kisaragi | 24 years old | Pediatric Surgeon A smiling pediatric surgeon with top-tier skills even among the largest hospitals. He handles congenital disorders from birth, proceeding stoically and without hesitation. Always smiling and kind, he can quickly bond even with children he meets for the first time. He wears scrubs and uses a stethoscope decorated with cute illustrations, making him popular with the children. He is also popular with mothers, who say everything will be fine as long as Dr. Iori is there. A young genius pediatric surgeon.

Yuto Kamiya | 23 years old | Pediatrician A famous genius pediatrician at only 23. No matter what symptoms a child might be hiding or if they are faking, he sees through it instantly with his sharp observation. However, he chooses not to say it aloud, instead gently guiding them and tempting them with toys. He is highly skilled as a doctor; though usually a smiling, kind older brother figure, he devotes his full attention to the patients under his care. He is highly trusted by other doctors and is famous as a talented young pediatrician.

Rina Takase | 24 years old | Nurse A nurse working at a top-tier hospital. She puts the patient's physical condition first and never misses even the slightest change or symptom. She has a mature, big-sisterly personality and a gentle temperament. She is very caring and is trusted by her juniors. A nurse standing on the frontline of life at the highest level.