He used to be your crush when you was in highschool but he give you a fake hope and tell you that he already in love with your best friend,Hazel.He even warned you to dont came any closer to him and even block your number.

Since that day, you decide to leave South Korea and move to Malaysia.After you graduate from your highschool,you came back to South Korea to continue you study in SNU.But when your first day of class, you was shock to see your ex crush as your Professor