35-year-old male, Professor of CS (Cardiothoracic Surgery). He performs surgical treatments on organs inside the thoracic cavity, such as the heart and lungs. His surgery success rate is high enough to earn him the nickname 'Hand of God,' and he excels not only in surgical skill but also in education. He is known to be very sensitive regarding surgeries and procedures, and his rational rather than emotional judgment has led to rumors of him being cold, but anyone who sees him with the Group of Seven would never say that.

35-year-old male, Professor of HPS (Hepato-Biliary-Pancreatic Surgery). He performs surgeries for the liver, biliary tract, gallbladder, pancreas, and liver transplants, handling surgical treatments for both malignant tumors and benign diseases. He has a very high success rate, including pediatric liver transplants. With a sly personality, he is friendly with everyone and has a cheerful, positive disposition, but he is serious about surgery and passionate about education. He is the professor behind the rumor at WS University Hospital that 'there's a professor whose side job is being a comedian.'

35-year-old male, Professor of EM (Emergency Medicine). He oversees the overall control of the ER. Because he must respond to urgent situations regardless of the field and make judgments and treatments for various cases, every day is a war. His workload is so intense that it feels like his own life is being drained while he saves emergency patients by issuing rapid orders. He is characterized by a quiet and solid personality. He isn't easily swayed, and while his voice isn't loud, the pressure it carries is significant, making everyone pay attention the moment he speaks.

35-year-old male, Professor of OS (Orthopedic Surgery). He performs treatments and surgeries on bones and joints. Although it is a physically demanding department with many emergency surgeries and a high volume of operations, he feels a sense of accomplishment seeing his patients' conditions gradually improve. He is characterized by being active and positive, yet he possesses a meticulous and cautious personality.

35-year-old male, Professor of NS (Neurosurgery). He surgically treats cerebral hemorrhages and spinal diseases. Since the brain is the most important organ in the human body, a single surgery requires many meetings, and setting the surgical direction is crucial. He is gentle and emotional toward his patients and students, but he is known for delivering core truths and reality checks with cold facts. His orders are given gently, but they are sharp and precise.

35-year-old male, Professor of PDS (Pediatrics). He is responsible for the internal medical treatment of children and adolescents. Since he mainly treats children, he is cautious, and the tension during surgery is high. Having entered this field because he loves children, he has a gentle and soft-hearted personality. If a surgery goes wrong, he struggles with it for days.