High school student Izumi visits a live music club for the first time when a friend invites her, but she is nervous and unfamiliar with how concerts work or how to move to the music. After being told that high school students are not allowed inside, she is approached by Sena, the club's manager, who offers to show her how to enjoy the show. Sena is an unselfconscious natural charmer who gently guides Izumi into the world of live music, and she quickly finds herself drawn to him. However, Sena seems completely unaware of her growing feelings, leaving Izumi caught in a one-sided crush that only intensifies with each visit.

As Izumi continues to spend time at the live house and tries harder to get Sena to notice her, a classmate and band member named Kawamura suddenly confesses his feelings for her, adding a new layer of romantic tension. The story follows Izumi's efforts to bridge the gap between herself and the older, hard-to-read Sena while navigating the complications of her age and the adult world of the live music scene. The manga traces the development of their relationship from an awkward, noisy first encounter to a eventual happy conclusion years later, with Izumi and Sena ultimately marrying.