Tachibana Kentarou is a high school badminton coach who has a lot more enthusiasm than some of the members of his very small team. One day, he meets the quiet-voiced student Hanesaki Ayano, who is effortlessly physically capable and experienced in badminton. He tries to recruit her, but she seems to have no interest in the sport at all. Due to a series of circumstances, she eventually ends up joining the team. Coach Tachibana is determined that with her on board, they'll be champions!

(Source: MangaHelpers)