Key had been whatching at his best friend who became his first love, Jonghyun from afar ever since the older save him from a car accident in high school. He wants to reach him and confess, but unfortunately, Jonghyun has a girlfriend. whatching them laugh with each other and how they hold hands breaks Key to pieces. But the thing that the younger fear a lot was breaking their relationship. But on one special day when the school held a singing event, will their friendship stay the same or will they bloom into something more?