Sekai de Ichiban Tsuyoku Naritai!

Hagiwara Sakura and Miyazawa Erena are the leading members of a popular idol group Sweet. One day, Erena is injured by the attack of a female pro-wrestler Kazama Rio during the recording of a TV program. Sakura gets mad at Rio and gives her a dropkick. To avenge Erena, Sakura enters the female pro-wrestling matches.