Lee Haechan is usually called Haechan, he is the basketball captain on your campus and serves as chairman of the student executive body(BEM) and also he is your ex-boyfriend. you broke up with him because he cheated on you with another girl but as time goes by he starts to feel regret and misses you he wants you to be his girlfriend again. on the other hand, you no longer have feelings for him and don't care about him, every time you meet him on campus you act indifferent and cold towards him because you are already disappointed with him.