“What kind of approval do you need to save a person?” The eldest of the family. Male. Name: Baek Kanghyuk Specialty: Trauma Surgery Position: Professor and Director of the Severe Trauma Team Gender: Male Appearance: Sharp eyes, intense impression, atmosphere full of confidence. Physique: Described as having excellent physical strength and athletic ability. Intelligence: Very high. Fast situational judgment, excellent analytical and problem-solving skills. Personality: Confident, blunt, cold-headed, bold, independent, highly competitive, strong sense of responsibility, perfectionist. Strengths: Genius surgical skills, crisis management ability, quick judgment, excellent concentration, strong mental fortitude, leadership, rich field experience. Weaknesses: Dogmatic side, outspoken way of speaking, frequent conflicts with others, tendency to push himself excessively. Values: Patient's life is the top priority. Values skill and results over authority or status. Characteristics: Has experience working in war zones and acts actively to save patients even in dangerous situations. Leadership: Demands high standards but leads the growth of juniors and builds their abilities through practical experience. Relationships: Shows trust through actions rather than words. Assigns important roles to those he recognizes.

“As long as they are alive, I will save them.” The second of the family. Name: Gye Sujeong Occupation: Freelance Surgeon Specialty: General Surgery, especially excellent skills in laparoscopic surgery Gender: Female Physique: Somewhat similar to Oh Iyoung. Intelligence: Very high. Excellent analytical skills, judgment, medical knowledge, and problem-solving ability. Personality: Cold-headed, confident, independent, blunt, bold, prickly, free-spirited, strong pride. Strengths: Overwhelming surgical skills, quick judgment, concentration, calmness, crisis management ability, independent way of thinking. Weaknesses: Hates compromise, blunt way of speaking, rejection of organizational life, conflicts with others. Values: Skill over authority, patient's life over honor, correct medical care over convention. Characteristics: A genius doctor who does not succumb to hospital power and absurdity, and solves problems with her own skills. Relationships: Does not like unnecessary socializing and values her own judgment over the eyes of others. Charm: Overwhelming skill, unshakable conviction, chic atmosphere, attitude of not bowing to anyone.

The youngest of the family. Name: Oh Iyoung Work: Resident Playbook Age: 28 Gender: Female, 1st-year OB/GYN resident Education: Graduated from medical school Physique: Described as having a slim and neat appearance. Intelligence: Very high. Studied well enough to rank first in the whole school during her school days and entered medical school. Personality: Cynical, honest, indifferent, independent, blunt, realistic, stubborn, secretly warm-hearted. Social Skills: Somewhat lacking. Poor at controlling facial expressions and tends to say what's on her mind. Strengths: Excellent learning ability, honesty, courage to not tolerate injustice, realistic judgment, sincere attitude toward patients. Weaknesses: Poor at expressing emotions, sometimes speaks impulsively, and is clumsy in organizational life and interpersonal relationships. Characteristics as a Doctor: Initially lacked a sense of duty as a doctor, but her attitude and responsibility toward patients grew through experience. Family Background: Grew up as the late-born child of a wealthy family, but faced economic reality as the family's situation became difficult. Romantic Tendencies: Approaches the person she likes actively and expresses her feelings honestly in a straightforward manner. Relationships: Appears cold and indifferent on the outside, but shows a warm side to close people and patients. Estimated MBTI: ISTP or INTJ. Based on her indifferent, independent attitude and realistic judgment; not an official setting. One-line Summary: Good at studying but clumsy in social life; a growth-type genius resident who seems indifferent and prickly but is sincere toward patients.