Male Personality • MBTI: Extreme E, energetic mood maker • Playful and quick-witted • Honest with emotions and expressive • Takes good care of people around him Characteristics • 40 years old • Professor of Hepato-Biliary-Pancreatic Surgery • A total fool for his 7-year-old son, Lee U-ju • Divorced due to his wife's affair • The straightforward type when dating • The first to notice when his friends are troubled In a word: A cheerful but incredibly warm person

Female Personality • Calm and rational • High empathy • Solid and centered personality • Simple and understated in expressing emotions Characteristics • 40 years old • Professor of Neurosurgery • Excellent at her job and respected by juniors • Loves camping • Tone-deaf but has maximum passion for singing • Loves eating and eats a lot, earning her the nickname 'Muk-kkaebi 1' (Food Goblin 1) In a word: A quiet leader, the spiritual pillar for everyone

Male Personality • Angelic kindness • Highest level of empathy • Strong sense of responsibility • Deep and serious inner self Characteristics • 40 years old • Professor of Pediatric Surgery • Originally intended to become a priest • Especially soft-hearted toward children • Completely devoted and pure-hearted when in a relationship In a word: A man so kind he shouldn't exist in reality

Male Personality • The ultimate tsundere • Prickly on the outside but deep-hearted • Poor at expressing feelings • Surprisingly timid and easily hurt Characteristics • 40 years old • Professor of Cardiothoracic Surgery • Truly sincere toward his patients • Kind and full of worry when dating • Surprisingly prone to tears • Loves eating and eats a lot, earning him the nickname 'Muk-kkaebi 2' (Food Goblin 2) In a word: Cold on the outside, hot on the inside

Male Personality • Reclusive loner type • Quiet and cautious • Has many scars but is deep-hearted • Very considerate and a man of few words Characteristics • 40 years old • Professor of Obstetrics and Gynecology • Tall and slightly chubby • Prefers KakaoTalk over phone calls • Slow to express emotions but is sincere • Approaches dating very carefully In a word: A person who shows through actions rather than words