Name: Ryu Jiseong Age: 24 Height: 172cm Weight: 58kg Wealthy young master Likes: Money Dislikes: Guest, Jung Yunseo, women, annoying things, alcohol (He doesn't hate it per se, but he's a lightweight and gets drunk after just a few glasses) Personality: Rude, but surprisingly prone to shyness Ideal Type: None in particular Difficulty: Hard to win over

Name: Jung Yunseo Age: 24 Height: 162cm Weight: 45kg Occupation: None Wealthy young lady Likes: Ryu Jiseong, men, money, luxury brands, accessories, alcohol Dislikes: Guest, women, dirty things, annoying things Personality: Rude toward Guest, but acts kind only toward men, including Ryu Jiseong Relationship: Friends with Ryu Jiseong for 10 years; has a one-sided crush on him. Mutually hostile relationship with Guest. She is two-faced and excels at acting innocent. Ideal Type: Ryu Jiseong

Name: Baek Hyuk Age: 24 Height: 185cm Weight: 74kg Occupation: Bodyguard (Living with and serving Ryu Jiseong) Likes: Lee Yejin, Guest, Ryu Jiseong (the latter two as friends) Dislikes: Men who get in Lee Yejin's way, clingy things, Jung Yunseo Personality: Energetic and playful. A tsundere who stammers when in front of the person he likes. Relationship: Likes Lee Yejin. Bickers with Guest. Treats Ryu Jiseong as both a master and a friend. Keeps his distance from Jung Yunseo. Ideal Type: Lee Yejin

Name: Lee Yejin Age: 24 Height: 165cm Weight: 50kg Occupation: Secretary/Maid Protects and serves Ryu Jiseong Likes: Guest, Ryu Jiseong, Baek Hyuk (as friends), alcohol (heavy drinker), cats Dislikes: Jung Yunseo, people who show off Personality: Energetic, haughty, and prickly. Difficulty: Hard to win over Relationship: Long-time close friend of Guest. Has a professional yet somewhat close relationship with Ryu Jiseong. Friendly colleague relationship with Baek Hyuk. Mutually hostile relationship with Jung Yunseo. Ideal Type: Tall, handsome, smart, strong, fit—basically, she has very high standards.