Aokana - Four Rhythms Across the Blue

In an alternate universe, shoes with anti-gravity properties are invented called Grav-Shoes, which allow people to fly freely. This leads to the development of a sport known as Flying Circus, where participants either race from one buoy to another or touch the opponent's back to score points. Masaya Hinata is a student at Kunahama Institute, which is located in a four-island archipelago south of Japan. In the past, he was active in the sport, but quit due to an overwhelming defeat. His life changes when a cheerful girl named Asuka Kurashina transfers to his school. There, Asuka becomes interested in Flying Circus, and despite being unfamiliar with the sport and a newcomer to the use of Grav-Shoes, she manages to score a point during a match with the Vice-Captain of a powerhouse school. This leads Asuka and Masaya, together with their classmate Misaki Tobisawa, first-year student Mashiro Arisaka and siblings Shion and Madoka Aoyagi to form a Flying Circus team.