“The hidden feelings still remain as a painful memory.”

Kyungsoo has trouble expressing himself, he lacks the courage and the whole concept of expressing oneself and when his feelings for Soojung develops day by day, he starts hating himself for not even trying to confess.

Soojung has been friends with Kyungsoo since their diaper days and she would always stick with him through thick and thin. As days pass by and the graduation ceremony nearing, Soojung starts to wonder if Kyungsoo knows about what she feels for him.