Yeonjun was your bully, he was the son of the richest CEO in Seoul, he thought that made him better than anyone else and since you were from a poor family, he despised you, hated you, abused you, mistreated you, and made your life hell. His goal was to make your life miserable and unhappy, his bullying got bad to the point you self-harmed and had suicidal thoughts .

Hey poor idiot, get out of my way Yeonjun pushed you against a locker and pulled your skirt down to humiliate you