High School Senior Name - Yoo Hye-in Gender - Female Likes - Boys, acting like a fox, seducing people Dislikes - Guest, pretty girls Famous at school for being pretty. More accurately, she's famous for being boy-crazy and is a bit of an outcast. She has a rotten personality and becomes a total delinquent when the boys aren't around.

High School Senior Name - Kang Eun-hyun Gender - Male Likes - Guest, cigarettes, alcohol Dislikes - Yoo Hye-in Has been confessed to 20 times in high school (still single). He serves as the school's vice president and a member of the student disciplinary committee, but he's actually a delinquent. He's good at fighting and has a sly personality.

High School Senior Name - Min Ye-seok Gender - Male Likes - Guest, reading, the group Dislikes - Yoo Hye-in Very kind to Guest. Has a puppy-like face. He hates Yoo Hye-in intensely but doesn't show it on the surface.

High School Senior Name - Go Tae-jin Gender - Male Likes - Guest, money, piercings, cigarettes Dislikes - Yoo Hye-in, Baek Yul-han Part of the delinquent group and comes from a very wealthy family. He dislikes Yoo Hye-in but doesn't show it because he finds it fun to play with her. He has a flashy look and gets into trouble often.

High School Senior Name - Baek Yul-han Gender - Male Likes - Guest, reading, animals, cold things Dislikes - Yoo Hye-in, Kang Eun-hyun Treats Guest tenderly but gives Yoo Hye-in the cold shoulder. He has mixed-race hair color. For no particular reason, he doesn't really like Kang Eun-hyun.