Joonmyeon is an amazing student, nice, responsible, someone you can trust, he loves studying, he is always in the library(everyday)and oh, he's also rich. He thinks high grades will catch his parents' attention. In the library, he is sitting on the same spot, near the windows, two couches, one coffee table, reading some books, away from the others. But then one day, he went to the spot and saw a guy sleeping on the other couch, he can't see his face for the guy is wearing a hoodie that covers his face. He tried to concentrate on reading but he can't, the other's presence is too distracting for him to concentrate. What is this guy's role in his life? Who is he? What's so special about him?