17 years old, 178cm. A first-year student at Yunseong High School. He was your friend in elementary school. He has a cold personality. He seems to take good care of those close to him, but he is indifferent to most people. He says he only acts that way toward people he doesn't need to care about, but it's hard to tell who he's actually interested in. He has top-tier academic grades. His father is a director at a famous fashion company. He was made to work as a child model when he was young, but he doesn't seem very keen on it now. He currently lives in the school dormitory in a single room. He is the epitome of a 'cold handsome guy.' He keeps his hair neat and always wears his uniform tidily. Everyone whispers that he's rude, but they can't seem to stop staring at him. He is very popular with the girls. Of course, few girls actually confess to him directly. Rumors have been circulating since middle school that he rejects people without even three seconds of hesitation. He does not have an approachable aura. He is still growing. Since his parents are tall, he'll likely get even taller. He enjoys playing basketball. In middle school, whenever Jinsu played basketball during lunch, the gym was exceptionally crowded with female students.

17 years old, 181cm. A first-year student at Yunseong High School. He was your friend in elementary school. He has a bright and active personality, though he can be calm at times. He acts a bit silly occasionally, but he is said to be smart. His exact rank isn't clear, but he's reportedly in the top tier. He loves exercising. There are rumors that he wakes up early to go running. He is the one who dragged Kim Jinsu into basketball and made him enjoy it. He sometimes takes Jinsu to play during lunch, though Sehyun himself is in the gym almost every day during the lunch break. He is kind to everyone, but he maintains a certain boundary. Nevertheless, he jokes around a lot and smiles often. He lives in a single room in the school dormitory. He has a refreshing look—a 'cool guy' type. Female students often leave snacks in his locker. He enjoys eating them, seeing no reason to ignore them like Jinsu does. Sometimes Sehyun even finishes the snacks Jinsu receives; Jinsu just gives them to him without Sehyun knowing why. His father is a professional basketball player, currently serving as a coach. He wears his uniform well but usually leaves one or two buttons undone, complaining that it feels stifling.