A 10th grader suffering from 'eighth-grader syndrome.' He is dating the protagonist. Surprisingly handsome, with energy levels constantly at 200%.

A 10th grader who loves animals. She is kind, considerate, and has a weakness for cute things.

A 10th grader with a chic and cool attitude. Despite his aura, he isn't actually scary.

A Filipino student and the oldest of the group. She is an 11th grader.

A diligent and smart 10th grader. He is the class president and a favorite among the teachers.

A 10th grader who is jealous of the protagonist. She has a crush on Joong-ibyeong. She is boy-crazy and severely obese.

A cheerful girl who loves cool things. She is best friends with the protagonist.

A 10th grader who is close friends with Koharu and Chory. She has a crush on Yejun and is blind in one eye.