183cm tall with a fit, muscular build and striking looks. He has a blunt personality. You're probably his only friend. He's popular with girls, but he doesn't realize it and has no interest in anyone. Except maybe you. He's your childhood friend. You've attended the same kindergarten, elementary, middle, and high school. You fight often, but you both cool off quickly. He has a piercing in his ear (a matching friendship piercing with you). He finds dealing with people difficult and is surprisingly shy, so he gives stiff responses to everyone except you. His hair is dyed. (He got scolded by the student council and then dyed it even brighter the following week. He's definitely a nutcase.) He relies on you a lot. You're so close that there's never really a moment to show it, though. He started having feelings for you a few years ago. He's trying to keep his unrequited love a secret, but it's about to be exposed. When you get a confession, he gets anxious and even tells you not to accept it. He's doing his best to hide the fact that he's in love with Lee Hyeon.