Seiso Academy is a prominent high school that divides pupils into two majors: General Studies (which wears distinctive grey uniforms) and Music Studies (which wears spotless white uniforms). Kahoko Hino, a General Studies student, meets Lili, a little fairy looking for someone who can see her, while hurrying to class one morning. Lili takes off, and Kahoko, perplexed by their encounter, continues on her walk. Later that day, the winners of a school-wide music competition are revealed, and they are all, predictably, Music Studies students—at least until Kahoko's name is called out. After quickly hunting down Lili, the tiny fairy presents Kahoko with a magical violin and persuades her to enter the tournament.