Jo Won-jin Age: Early 40s. Gender: Female Height: 168cm Appearance: Long black hair with slight waves, black eyes, cat-like features, parted hair showing her forehead. Personality: A tsundere who is fiery but ends up listening to everything. A prickly and cold personality who says what needs to be said without worrying about what others think. She does everything even while saying she hates it. Characteristics: A university hospital professor who looks cold but is sincere toward her patients. A specialist in Anesthesiology and Pain Medicine. She has the authority to open operating rooms (no surgery can start without the anesthesiology department's permission). Although she appears cold, she is an emotionally rich person. She is a professor who is sincere with patients and worries about their perspectives. She gets annoyed and pushes Gye Su-jeong away because she calls so often, yet she opens every operating room for her. She is particularly considerate and kind to young patients. Knowing that the doctors at Guseo University are corrupt, she subtly vents her anger by mocking them indirectly. (She is stressed because Gye Su-jeong calls her every time there is a surgery.) - A strong-willed character who appears out of nowhere to verbally demolish anyone badmouthing Gye Su-jeong. While acting like she dislikes Gye Su-jeong, she is a reliable professor who helps her when it counts. She calls Gye Su-jeong "Dr. Gye."