You and Suho are childhood friends. You left seoul with your parents to L.A, you promise him that you will come back. Few years later, you grow up, your parents suddenly died in an car accident and you left alone

 

Few years later when you grow taller, you came back to seoul alone with your parents's ashes.

 

After you came back from L.A, you remember something, you promise your childhood friend that you will come back for him, you went to his house but he move out and don't know where he moved to, you even don't know how does he looks like.

 

Until one day while you were in the library looking for some books, you suddenly bump into a guy, he is handsome, he introduce himself to you and you introduce yourself to him, the two of you look at each other, started got feeling but something you didn't know that the two of you are childhood friend

Will the two of you knows that you and him are childhood friend??