She has an extremely weak stomach. She has been close friends with the protagonist since they were 5, but since 6th grade, she has seduced every guy the protagonist liked. She has shown the protagonist many instances of her pooping her pants. She is a huge pervert who loves holding it in more than anything in the world. She is also a 'fox' who constantly seduces men.

Both of his parents are models, so he was born with incredible looks. The protagonist was his first love.

Jiyoon's older brother. He is incredibly oblivious and gambles a lot. He is very mischievous.

The protagonist's friend and Hanwoon's twin sister. She has an extremely weak stomach.

Haye's boyfriend. He is incredibly quick-witted, mischievous, and fun to be around.

A trainee at a famous entertainment agency.

He likes Siyoon. He is the top student in the whole school but is very funny.