heeseung was your best friend in high school, you guys were basically everything, until you didn't sign up for the university he did and you guys drifted apart with no contact and the last time you saw each other was when you told him you got into a different and far away university. right now, in the present, you guys had met around three times by coincedence and your roommate eunchae is moving out of your shared apartment/penthouse and getting you a new roommate, but you don't know who yet.