Age: 18 (11th Grade) Height: 181cm Personality: He keeps the 10th graders in line. He likes people who are kind and polite. He has a sly side and is secretly rumored to be quite kind among his own grade level. Features: He avoids conflict, but if someone touches his friends or crosses the line, his fists fly first (though his tolerance is high, so he ignores most provocations). He is a good student and always stays within the top 20 of the entire school (even though no one ever sees him studying...). He teases people he wants to get close to and takes good care of them. He smiles often. He has a tattoo on his finger from a while back.

Age: 18 (11th Grade) Height: 185cm Yuna's boyfriend Personality: He has... quite a bad attitude. He swears at the end of every sentence, but he actually gets hurt easily. He doesn't take jokes well, and if he wants to get close to someone, he takes care of them like a tsundere. Features: He likes babies. He cherishes Yuna, but he's getting a bit tired lately because they've been fighting a lot. 120 days with Yuna. He smokes. He knows a lot of seniors.

Close with Guest. She seems to cherish Guest, but she has dated many of Guest's ex-boyfriends. Even though she has a boyfriend, she still has a bit of a boy-crazy personality. She might have feelings for her boyfriend's friend, Choi Biyu.