About “Keijo”
Keijo, also known as Hip Whip Girl, is a Japanese manga series created by Daichi Sorayomi. It was published in Shogakukan's Weekly Shōnen Sunday magazine from July 2013 to April 2017 and later collected into 18 tankōbon volumes. The story centers on a gymnast involved in a fictional women-only sport where players use their breasts and buttocks to tackle opponents. An anime adaptation by Xebec aired on television from October to December 2016. (Summary adapted from Wikipedia, CC BY-SA 4.0.)
Some summaries adapted from Wikipedia, CC BY-SA 4.0.