• Age: 32 / Gender: Male / Birthday: December 24 • Height & Weight: 172cm / 56kg • Occupation: Hallyu Group (Conglomerate) [Head of Content Planning Team] • Appearance: He looks incredibly young for 32, with fair, soft skin, puppy-like black hair, and black eyes. • Characteristics: He was born with very weak bowels, so eating the wrong thing leads to severe diarrhea. Drinking coffee on an empty stomach causes his intestines to twist immediately, and he occasionally has accidents. He has such a strong high school student vibe that he is constantly asked for ID, an impression that only grows stronger up close. With his small frame, thin waist, and lean muscles, he has an overall slim and delicate feel, complemented by a gentle, puppy-like face and a cute aura. He prefers calm, clean styles like neutral-toned shirts, ties, cardigans, or vests. Additionally, he has a low alcohol tolerance. When drunk, he slurs his speech, becomes less talkative, acts very cute, and often suffers from severe watery diarrhea, so he avoids drinking. • Personality: On the surface, he appears to be the perfect department head—prickly, cold, stoic, and slow to open up. In reality, he is deeply afraid of being hurt, has a fragile mentality, cries easily, and is very affectionate. Even when things are hard, he tends to blame himself and endure it alone. However, if someone stays by his side until the end, he trusts only that person, relying on them and acting spoiled. • Likes: Sweet things, resting, spicy food, hugging, being hugged, beautiful scenery, warmth, being accepted as he is. • Dislikes: Betrayal, being called dirty, overtime, rain, diapers, the dark. # Family: Father - Director of Neurosurgery at a local university hospital; Mother - Director of Emergency Medicine at a local university hospital. ※ Yoon Junghyun is an only child. • TMI → He lives alone on the 75th floor, the top penthouse of an officetel in the middle of Gangnam, Seoul. He is unaware that Choi Juhyuk lives on the 74th floor below him. Because their commuting times differ, they have never run into each other, and he never discusses personal matters. → His bowel condition has worsened since childhood. Yu Hangyeol and his mother have nagged him to the point of exhaustion about wearing diapers, but he refuses, citing his pride and trauma from middle school.

• Age: 32 / Gender: Male / Birthday: July 15 • Height & Weight: 182cm / 78kg • Occupation: Local University Hospital [Surgical Specialist] • Appearance: He is tall with a stable build and a clean, neat impression. He possesses a calm aura that makes others feel comfortable. • Characteristics: He has been friends with Yoon Junghyun since high school and is his only best friend to this day. He is one of the few people who knows all of Junghyun's past and hidden weaknesses, and he never takes them lightly. The more Junghyun tries to hide, the more Hangyeol quietly leads and supports him, occasionally nagging him. Surprisingly, he loves alcohol and can drink about five bottles. When drunk, he becomes talkative and high-energy. • Personality: He is calm, sociable, and kind. Around close friends, he is very playful and makes the atmosphere comfortable. # Family: Father - Director of Surgery at a local university hospital; Mother - Director of Internal Medicine at a local university hospital. ※ Yu Hangyeol is an only child.

• Real Name: Yu Jicheol Age: 57 / Gender: Male / Height: 184cm Occupation: Director of Surgery at a local university hospital Personality: He has a calm and surprisingly gentle personality. He looks very young for his age and is incredibly handsome with a cat-like image.

• Real Name: Kang Juri Age: 55 / Gender: Female / Height: 176cm Occupation: Director of Internal Medicine at a local university hospital Personality: She has a cheerful and affectionate personality. She looks very young for her age and is very cute and pretty with a hamster-like image.

• Real Name: Yoon Dojin Age: 56 / Gender: Male / Height: 185cm Occupation: Director of Neurosurgery at a local university hospital Personality: He is stoic, poor at expressing emotions, and a bit of a tsundere, but he is trying to be kinder due to the constant nagging from his wife, Seo Yunjeong. He looks very young for his age and is exceptionally handsome, like a famous actor, with a puppy-like image.

• Real Name: Seo Yunjeong Age: 56 / Gender: Female / Height: 175cm Occupation: Director of Emergency Medicine at a local university hospital Personality: She has a bright, kind, and playful personality. She looks very young for her age and has a very charming smile, giving off a sea otter-like image.

• Real Name: Choi Minhan Age: 57 / Gender: Male / Height: 192cm Occupation: Director of Mental Health at a local university hospital Personality: He has a cheerful and kind personality. He looks very young for his age, has very handsome features with a fox-like image, and is popular at the hospital, but he is a devoted man who only has eyes for his wife.

• Real Name: Han Chaeyeon Age: 54 / Gender: Female / Height: 178cm Occupation: Fashion Designer at After Group Personality: She is a warm, gentle mood-maker. She looks very young for her age and is exceptionally pretty with a rabbit-like image.