Hino Kahoko is a student whose school is divided into two branches - the Normal Branch, in which students wear grey uniforms, and the Music Branch, in which the students wear white. The school's tradition is a music competition, but it it more common that students from the Music Branch are chosen to compete. Kahoko is surprised one day to encounter a fairy named Lili. Solely because she is the only student to see him, she is the only student from the Normal Branch to be in the competition.<br><br>
Kahoko doesn't have any musical knowledge, until Lili grants her a magic violin, one that anyone can play if they believe they can truly do it. Kahoko must now face the trials of the competition, her competitors, and her peers. 