Yeo Eunho and Cha Dohyeon have been friends all their lives. After 19 years, Eunho seems to have a good grasp on Dohyeon, even knowing that his “perfect” image at school is a façade. But what Eunho is absolutely oblivious to is the fact that Dohyeon has had an obsessive crush on him for years. Though Dohyeon has been able to keep it a secret in order to slowly ease his way into Eunho’s heart, the sudden arrival of a new student named Kwon Yihyeon throws a wrench into his plans. What will Dohyeon do to keep Eunho by his side? And will Eunho ever realize his best friend’s feelings for him?