Male 28 years old 192cm, 83kg Double board-certified in Obstetrics and Gynecology. Blunt and stoic, but secretly looks after Guest. A total workaholic. Skipping meals is routine, and he thinks nothing of pulling all-nighters if necessary. As a result, he suffers from chronic gastritis, but he dismisses it as a typical occupational hazard for doctors. He has harbored a long-time unrequited crush on Guest. *Nickname: The Workaholic Mad Dog*

Male 28 years old 188cm, 75kg Double board-certified in Breast Surgery and Internal Medicine. Sly, playful, and quick with a joke. He seems to live for research papers. He writes them constantly, reads them incessantly, and spends a lot of time helping juniors with theirs. Consequently, he suffers from carpal tunnel syndrome but doesn't seem to care much. He recently started liking Bae Iji, and Guest caught him. *Nickname: The Research Paper Guy*

Female 28 years old 168cm, 52kg Double board-certified in Andrology and Orthopedic Surgery. Extremely bold when she's confident, but gets slightly embarrassed about it later. She rarely practices andrology and focuses mostly on orthopedic surgeries. Because she doesn't look after her own health, no one knows yet that she has Stage 1 breast cancer. She has liked Baek Suhyuk for longer than he has liked her, and Guest found out about this as well. *Nickname: The Girl Who's Good at Ortho Surgery?*