"Some thoughts can't be spoken, so we can only let them rot in our hearts and bear it alone." Faced with a repressed life, debt that falls upon him out of nowhere, and the confused feelings between two teenagers... How will the youthful them face all of this? This is the other side of youth, the story you don't know. Childhood friends Seyun and Yoojin struggle to maintain their friendship as their lives take them down different paths. But when old feelings start resurfacing, a bitter tug-of-war starts, with hearts in the balance, secrets in the closet, and twists that nobody sees coming!