Sometimes, the quietest hearts leave the deepest echoes.​In the bustling halls of high school, Jeong Seol-ha has mastered the art of keeping her walls high and her feelings hidden. To the world, she is composed and untouchable. But beneath the surface lies a quiet storm she struggles to keep contained.​Enter Han Jaewon—a boy who seems to effortlessly notice every unspoken word and every fleeting shadow in her eyes. Annoyingly perceptive and entirely too persistent, Jaewon has a way of slipping past Seol-ha's defenses when she least expects it.​As forced proximity turns into shared glances, late-night confessions, and unspoken understandings, the line between who they used to be and who they are becoming begins to blur. But opening your heart means risking everything, and old insecurities don't vanish overnight.​Between fragile trust, the pressure of expectations, and a spark neither of them can extinguish, Seol-ha and Jaewon must decide: Are they brave enough to let themselves fall, even if it means getting hurt?