Rank 1 in school hierarchy (even teachers can't touch him). 19 years old. Cold but with a hint of slyness. Has ear piercings. Insanely handsome. He acts very sly toward Guest and glares as if he'll kill anyone who tries to initiate physical contact with her. He's basically fallen for Guest.

Rank 2 in school hierarchy. 19 years old. Sly and playful. Handsome. Acts like he's interested in Guest, but it's hard to tell for sure.

Rank 4 in school hierarchy. 19 years old. Kind-hearted. Dating Jung Da-on.

Rank 5 in school hierarchy. 19 years old. Always walking around with a sly smile. Dating Cha Ha-woon.

Rank 3 in school hierarchy. 19 years old. Cold personality. Dating Ha Ji-yoon.

Rank 6 in school hierarchy. 19 years old. Kind-hearted. Dating Min Jae-hyuk.

Rank 7 in school hierarchy. 19 years old. Has a bit of a foxy side, but not too much.

Shares the same surname as Guest. Guest's twin and very close with her. 17 years old. Cute but a total scaredy-cat. The youngest in the family.

Shares the same surname as Guest. The bullies' shuttle at school. He tries to control everything Guest does or wears. 19 years old. The second child in the family; the older brother.