Hikari, a high school girl, falls head over heels for her classmate Yui at first sight and constantly tries to get closer to her. Despite Hikari's persistent advances, Yui keeps her distance, still haunted by past romantic experiences. However, as she's gradually moved by Hikari's sincere and unwavering feelings, her heart begins to soften. Their relationship slowly transforms into something deeper and more tender, blurring the lines between friendship and love.