Although the school's internal music competition has ended, Kahoko continues to practice the violin. Striving to close the gap with the other skilled participants, she dedicates herself wholeheartedly to her performance. However, a boy named Seiō Tsukimori, who happens to see Kahoko playing, responds to her efforts with cold mockery. The appearance of the next chairman, Akihiko Kira, brings shocking developments to the plot, while the mysterious transfer student Aoi Kaji further stirs the story.