アオのハコ

剧情：

Taiki Inomata, a third-year student in junior high, attends Eimei Academy, an integrated school with a major sports program. Having joined the high school badminton team, Taiki tries to attend open practice as early as possible. But no matter how early he goes, he always arrives second in the gymnasium. The person one step ahead of him is Chinatsu Kano, a first-year student in senior high and Taiki's crush.