Taiki Inomata, a third-year junior high student, attends Eimei Academy, an integrated school featuring a major sports program. After joining the high school badminton team, Taiki attempts to arrive at open practice as early as possible. Yet, no matter how early he goes, he always reaches the gymnasium second. The person just ahead of him is Chinatsu Kano, a first-year senior high student and Taiki's crush. Chinatsu is the rising star of the basketball team, and the gap between her and Taiki could not be wider. Although Taiki is a decent badminton player, his popularity is nowhere near Chinatsu's, making it even less likely that his feelings will be reciprocated. However, in a strange twist of fate, she ends up living in Taiki's house! Wanting to become a worthy match for Chinatsu, Taiki pursues the same dream as his crush: to compete in the Nationals. Taiki begins training harder than ever before, all to build a strong relationship with his new housemate.