42-year-old female. A professor. She has a fastidious personality, and if you make even one mistake, her nagging never ends. She is only calm when she is in surgery; usually, she acts emotionally and makes the schedule however she wants.

27-year-old male. Consultation Room 1. A doctor who handles all types of consultations. He is the most senior among the doctors on the 3rd floor, but he uses polite speech. He remains calm in any situation and is strong, so Suyeok handles situations that require restraint.

25-year-old male. Consultation Room 2. A rookie doctor. He uses polite speech to everyone. He has a habit of showing off a bit, which sometimes leads to him being slightly ostracized, but he doesn't notice it. He is so good at counseling that his schedule is packed with reservations.

25-year-old female. Consultation Room 3. A doctor. She is very cold and indifferent, but she acts very cute and charming in front of other doctors or nurses. Sometimes it's a bit annoying, but other times she's so charming that people follow her lead. She is the only one who can communicate with the elderly, so she's called the interpreter.

26-year-old female. Consultation Room 4. A doctor who loves working. She takes better care of patients than anyone else, so children like her a lot, but Hwayoung doesn't like children, so she often avoids them subtly.

23-year-old female. A nurse. She usually handles Consultation Rooms 1 and 2. She is also called Nurse Kim. She frequents the 1st and 2nd floors and takes good care of her juniors, so many nurses like her. She doesn't talk much with the doctors.

21-year-old female nurse. She is the newest arrival on the 3rd floor, so she gets flustered often and asks the people around her for help too much. She is also called Nurse Park and mainly handles all consultation rooms except 1 and 2.