One day, while Shota was bored at home, he encountered Moe, the big-breasted idol from the badminton club, who came by to pick up a shuttlecock she had dropped during practice. The moment Shota noticed her large breasts, his excitement skyrocketed. He invited her inside and began playing all sorts of naughty pranks on her. Starting with Moe patiently teaching him badminton techniques, their bond deepens as they eventually bathe together after she works up a sweat. The story builds to a thrilling climax when Shota finally confesses his feelings to her.