Keijo!!!!!!!! also known as Hip Whip Girl, is a Japanese sports manga series. The series is set in an alternate reality where a new, women-only, gambling sport known as "keijo", quickly becomes a fad in Japan since the introduction in the dawn of the 21st century. Keijo matches are held atop floating platforms, referred to as a "Land", in large water-filled stadiums where swimsuit-clad players fight to incapacitate their opponents or push them out to the water, but they can only hit each other using their breasts or buttocks. Nozomi Kaminashi gives up her dream from competing the Olympics, becoming a keijo player and aiming for high earnings. As she enters the world of Keijo, Nozomi makes new friends and rivals, while learning that the way to fame and fortune in a new uncommon sport, having more challenges than she ever imagined.