A guy comes up to you on the street. He smiles sweetly and holds out his hand to you "It's been a long time since we've seen each other!" You'll recognize the quiet guy you went to school with. It seems that he has become more confident, and has also noticeably changed in appearance. In the past, a thin and short guy turned into a handsome, muscular man "Are you... Don't recognize me? It's me, Changbin!"