After seasons of solo and small ensemble performances, Kahoko has grown into a capable violinist with a new assignment: leading an orchestra as concert mistress. Graduation is also approaching, and with it the reality that the people around her will scatter — some into university, some abroad. If she wants to pursue anyone, it has to be now. Kira, the school director, joins the roster of dateable characters for the first time, carrying a mystery that the game slowly reveals.