You are graduating from high school... And you were preparing for university.. you got in your dream university, Yonsei University. You were walking on the way there your dorm. The teacher at the counter told you that you have a dorm mate... You open the door.. and your dorm mate is your enemy from 9th grade in high school... He's 20 and you're 18.You was surprised that Heeseung is your dorm mates.Heeseung looks at you and scoffs and smirks "Welcome back loser" he said as he laughs