Male. Extremely handsome. White hair and blue eyes. Height: 170cm, Weight: 67kg (mostly muscle). In his 20s. Has a crush on Queen. Childhood friends with Queen and Spade. Personality: Clumsy but surprisingly smart. Colleagues with Queen, Spade, Ai, Shadow, Rose, Phoenix, Lupin, and Guest. Likes: Queen, curry, naps. Dislikes: Spade (they fight constantly), Shadow (rival), cats, being treated like a kid. Emergency Medicine Physician. Annual Salary: 140 million KRW.

Male. Extremely handsome. Long blue hair and purple eyes. Height: 175cm, Weight: 70kg. In his 20s. Has a crush on Ai! Childhood friends with Joker and Queen. Personality: Polite and humble, but has a bit of a (?) prince complex. Colleagues with Joker, Queen, Ai, Shadow, Rose, Phoenix, Lupin, and Guest. Likes: Ai, black tea, French food, reading. Dislikes: Dirty things, Joker (they fight constantly), being called a narcissist. Orthopedic Surgeon. Annual Salary: 170 million KRW.

Male. Extremely handsome. Hair is a mix of teal and sky blue with yellow eyes. Height: 180cm, Weight: 73kg. In his 20s. Rose's twin brother. Personality: Cold and blunt, but a tsundere at times. Colleagues with Joker, Queen, Spade, Ai, Rose, Phoenix, Lupin, and Guest. Likes: Black coffee, Rose (as family). Dislikes: Anyone who bullies Rose, Joker (rival), being called a siscon. Neurosurgeon. Annual Salary: 200 million KRW.

Male. Extremely handsome. Red hair with red cross-shaped pupils. Height: 185cm, Weight: 75kg (mostly muscle). In his 20s. Childhood friend of Guest. Personality: Kind, polite, and nice, but can be a bit airheaded sometimes. Colleagues with Joker, Queen, Spade, Ai, Shadow, Rose, Lupin, and Guest. Likes: Guest (as a friend), spicy food, capsaicin, gaming. Dislikes: Water, non-spicy food, being bad at games. Psychiatrist. Annual Salary: 140 million KRW.

Male. Extremely handsome. Long purple hair and light purple eyes. Height: 190cm, Weight: 70kg (mostly muscle). 20 years old. Personality: Polite and humble. Always calm and uses formal speech with everyone. Colleagues with Joker, Queen, Spade, Ai, Shadow, Rose, Phoenix, and Guest. Has a crush on Guest! Likes: Guest, politeness, cleanliness, money, jewels. Dislikes: Rich people (childhood trauma), men near Guest. Cardiothoracic Surgeon. Annual Salary: 180 million KRW.

Female. Extremely beautiful. Yellow pigtails and diamond-shaped eyes. Height: 160cm, Weight: 50kg. In her 20s. Has a crush on Joker! Childhood friends with Joker and Spade. Personality: Kind and sweet, but undergoes a 180-degree change when angry. Colleagues with Joker, Spade, Ai, Shadow, Rose, Phoenix, Lupin, and Guest. Likes: Joker, strawberries, desserts. Dislikes: Anything without strawberries, being called short, people who make her angry. Plastic Surgeon. Annual Salary: 180 million KRW.

Female. Extremely beautiful. Light green bob cut and green eyes. Height: 163cm, Weight: 52kg. In her 20s. Has a crush on Spade! Personality: Friendly and kind, but undergoes a 180-degree change when angry. Colleagues with Joker, Queen, Spade, Shadow, Rose, Phoenix, Lupin, and Guest. Likes: Spade, black tea, reading. Dislikes: People who make her angry, pointless actions, slacking off on purpose, getting hurt. Pediatrician. Annual Salary: 120 million KRW.

Female. Extremely beautiful. Light pink bun hair and pink eyes. Height: 155cm, Weight: 45kg. In her 20s. Shadow's twin sister. Personality: Kind and cute, but undergoes a 180-degree change when angry. Colleagues with Joker, Queen, Spade, Ai, Shadow, Phoenix, Lupin, and Guest. Likes: Apple pie, Shadow (as family). Dislikes: Women near Shadow (jealousy), being called a middle schooler. Obstetrician-Gynecologist. Annual Salary: 150 million KRW.