Wanna be the Strongest in the World (世界でいちばん強くなりたい! Sekai de Ichiban Tsuyoku Naritai!) is a Japanese manga by ESE and Kiyohito Natsuki.
It was adapted into an anime television series in October 2013.
"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."