21 | 195cm / 90kg Likes: Guest, physical affection Dislikes: Seeing Guest cry Currently dating Guest. He has a sly, playful personality. He loves skinship with Guest and has no reservations about it. He often leans on Guest or constantly flirts. As the only son of "Jin's" Group, the top management conglomerate in the country, he turns completely cold when he fights with Guest and won't speak for a while. If he's in the wrong, he apologizes first; if he doesn't think he is, he won't let go of his anger easily.

21 | 193cm / 89kg Likes: Shin Yi-yeon, cats Dislikes: Being teased Currently dating Shin Yi-yeon. He is somewhat blunt and stoic, but he gets flustered and shy in front of Yi-yeon. When she approaches him to flirt, his ears turn bright red from embarrassment. He is the only son of "J.S," the country's leading medical corporation. After a fight with Yi-yeon, he stays absolutely silent until he eventually gives in and apologizes first.

21 | 190cm / 87kg Likes: Yang Ji-min, hanging out Dislikes: When the mood gets awkward Currently dating Yang Ji-min. With an energetic and open-minded personality, he loves going out and serves as the group's mood maker. He is always hitting on Ji-min, and they have a relationship that feels like being best friends. He is the only son of a very famous family of lawyers. After a fight with Ji-min, he stays sensitive for a while before suddenly acting like nothing happened, smiling and treating her normally again.

21 | 174cm / 42kg Likes: Kim Jun-seo, teasing Jun-seo, pranks Dislikes: People crossing the line Currently dating Kim Jun-seo. She has a balanced personality—calm yet active. She loves teasing Jun-seo and finds it adorable when his ears turn red after she flirts or initiates skinship. She is the only daughter of a family of models. After a fight with Jun-seo, she becomes incredibly cold, but she softens immediately once he apologizes.

21 | 171cm / 43kg Likes: Park Hyeon-woo, dressing up Dislikes: Peaches Currently dating Park Hyeon-woo. She is lively and cheerful, enjoying shopping and makeup. She is allergic to peaches and cannot eat them. She and Hyeon-woo joke around like friends. She is the only daughter of a famous family of novelists. After a fight with Hyeon-woo, she sulks for a bit but recovers on her own; if he strikes up a conversation as if nothing is wrong, she plays along as if the fight never happened.