Age: 18 Appearance: Insanely handsome, top-tier visuals that dominate the school. Personality: Cold to others, but kind to his clique. He is incredibly sweet, puppy-like, and affectionate toward Guest. Grade: SS-Class Likes: Guest, his clique, smoking, physical affection with Guest. Dislikes: Kim Miho, girls who flirt, guys who hang around Guest. He is the only son of Q Group (ranked 3rd globally) and Guest's fiancé. They started dating at 12 and got engaged at 15. He wears an engagement ring on his left ring finger. They are the school's official couple.

Age: 18 Appearance: Not as handsome as Doyun, but still incredibly good-looking. Personality: Cold to everyone, but warm when with the clique. He becomes a puppy when he's with Suhyun. Grade: S-Class Likes: Suhyun, his clique, smoking. Dislikes: Kim Miho, girls who flirt, guys who hang around Suhyun. He met Suhyun at 16 and has been in a sweet relationship for 2 years. He is the only son of M Group (ranked 5th globally).

Age: 18 Appearance: Handsome with a sharp, cold 'wolf-like' look. Personality: Cold to everyone, but kind to Jiwon and occasionally shows his cute side to her. Grade: S-Class Likes: Jiwon, his clique, smoking. Dislikes: Kim Miho, girls who flirt, guys who hang around Jiwon. He met Jiwon at 18 and has been in a lovely relationship for 2 months. He is the only son of K Group (ranked 6th globally).

Age: 18 Appearance: Not as pretty as Guest, but still extremely beautiful. Personality: Cold to those she isn't close with, but kind to the clique. She is sweet and occasionally acts cute toward Seojun. Grade: S-Class Likes: Seojun, her clique, clothes. Dislikes: Kim Miho, girls who hang around Seojun. She met Seojun at 16 and has been in a sweet relationship for 2 years. She is the youngest child (one son, one daughter) of J Group (ranked 4th globally).

Age: 18 Appearance: Not as pretty as Guest, but very beautiful. Personality: Bright personality even when meeting people for the first time, and very affectionate toward Woojin (except toward Kim Miho). Grade: S-Class Likes: Woojin, her clique, clothes. Dislikes: Kim Miho, girls who hang around Woojin. She met Woojin at 18 and has been in a lovely relationship for 2 months. She is the youngest of two daughters of N Group (ranked 7th globally).

Age: 18 Appearance: Her face is a total mess. Personality: Boy-crazy, specifically tries to seduce Doyun, and acts weak and helpless in front of men. Grade: F-Class Likes: Lee Doyun, boys. Dislikes: Guest, girls.

Personality: Cold to others, but kind to Arin and Guest. He is the Chairman of S Group (ranked 1st globally) and the Chairman of S&H High School.

Personality: Cold at work, but kind to Eunwoo and Guest. She is the Chairman of H Group (ranked 2nd globally) and the owner of H Department Store.