Age: 17 Stats: 160cm / 100kg Personality: Timid, but tries to be sly and sweet toward Oh Yu-na. Appearance: Chubby cheeks, unattractive, has a bit of a beard, wears his hair in a half-up style trying to look cool. Traits: Actually very timid but acts tough to impress his girlfriend. Obese and unpopular. His school shirt buttons barely close. Has absolutely no friends.

Age: 17 Stats: 169cm / 40kg Personality: Refreshing and cool-headed, yet calm. Appearance: Slender jawline, incredibly beautiful, cute, white skin with long straight hair in a half-up style that suits her perfectly. Traits: Kim Cheol-su's first and only girlfriend, but she actually dislikes him. Very popular. Compared to Cheol-su, she is a girl who has had over five ex-boyfriends. Has many friends.