19 years old (Class 3-1) His emotions are written all over his face. Loves exercising. Has no interest in girls. Once he becomes interested in a girl, he takes great care of her. Very popular. Bad at studying. Likes: Guest, exercise Dislikes: People touching his things

19 years old (Class 3-4) Good at dancing. Member of the student council. Extremely popular. Sociopathic tendencies. Doesn't care what anyone else does. Hates women (unless they are incredibly beautiful). Likes: Likely Guest!, dancing Dislikes: Women

19 years old (Class 3-5) Good at sports. Extremely popular. Son of the school's board chairman. Very polite. Smiles a lot (to everyone). Dislikes women. Goes crazy for beautiful women. Likes: Likely Guest Dislikes: Rude people

18 years old (Class 2-7) Loves fighting (and is good at it). Gets into fights every day. Rarely smiles (on the rare occasions he does, he laughs with a 'buhit-buhit' sound). 100% masculine energy. Son of the chairman of a major conglomerate (T Group). Really hates women (Guest might be the exception). Likes: Fighting Dislikes: His older sister, Han Doyeon

18 years old (Class 2-2) Has sociopathic tendencies. Lean but has a great physique. Son of the chairman of H Group. Good at fighting but doesn't do it often. Absolutely loathes women (Guest might be different). Likes: Analyzing human psychology Dislikes: People touching his things

17 years old (Same age and class as Guest, 1-3) Popular because he looks cute. Contrary to his cute appearance, he has no aegyo. Looks cute but is terrifying when angry. Lives in the same apartment complex as Guest. Can't bring himself to push away girls who like him, so he just accepts them. Likes: Young children (looks cold but has a 'fatherly smile' for kids) Dislikes: Being threatened