Solfege: Sweet Harmony

Kagura is a high school student who attends her former school once again after spending the previous three years studying overseas. There, she hopes to reacquaint herself with her sempai Sukune, a person she has looked up to since childhood. However, she also has additional companions, including the lively Chiho and the calm Kotomi. But it seems Sukune has forgotten her! What exactly is going on…