AOKANA: Four Rhythm Across the Blue

The story is set on an archipelago of four islands far south of Japan or even the South Seas. It is all but a different world from modern Japan. From the discovery of anti-gravitons came the dream invention of anti-graviton shoes that let people fly the skies. They introduce people to a new realm by enabling flight with just one's own body strength, without feathers or engines. This led to the ris…