If the law of conservation of mass dictates that matter can neither be created or destroyed, maybe that means when you lose someone close to you, someone else you thought you lost years ago comes back.        

why is it so hard to say: "will you go to prom with me?" oh, right—it's because a) eunwoo doesn't have the courage to and b) her crush is already predestined to go with his super gorgeous, super cute childhood friend.  

After few years of doubt and hesitation, he going to confess his love........ with a gift. 

In which Mingyu and Minkyung spend their time together.