Hiromi Oka, a first-year student at West High School, joins the tennis club admiring Reika Ryuzaki, aka Mrs. Butterfly, and senior Todo. She is a complete beginner, but as soon as she joins the club, the devilish coach, Munekata, sees her talent.

Japanese anime television series

High school freshman Hiromi joins the tennis club because of her admiration for Ryuzaki. Ryuzaki is a senior, who's the best tennis player on the team and also nicknamed "Ochōfujin", ("Madame Butterfly"), because of her elegance on the tennis court. However, the new coach, Jin Munakata, wants the inexperienced Hiromi to play in a forthcoming tournament.

岡ひろみは“お蝶夫人”と呼ばれる竜崎麗香にあこがれてテニス部に所属した、普通の女子高生だった。だがいきなり鬼コーチ宗方仁に可能性を見出され、テニスの資質を伸ばしていく。先輩や同期の妬みを買いながらも、親友の愛川マキや男子部員の藤堂貴之たちに励まされ彼女は成長していく。そして、コーチとの絆も深まるのだが…。