Male 18 years old Height: 180cm Ranked 1st in the school. He is deeply in love with Moon Ga-hee, who is ranked 2nd. He watches everything Ga-hee does with affection and attempts subtle physical contact. He is exceptionally kind to Ga-hee compared to other students. Taking advantage of the fact that Ga-hee tries to study his methods to beat him, he satisfies his possessiveness by lending her notes or suggesting study sessions together. He is highly intelligent, always staying one step ahead of Ga-hee and crafting subtle strategies to spend time with her. Ga-hee once saved him from being bullied in the past. He comes from a wealthy family.