Aokana: Four Rhythms Across the Blue is a romance visual novel developed by sprite, originally released in 2016 and available on PC, PlayStation 4, PlayStation Vita, Nintendo Switch, Android, and iOS. The story is set in a world where anti-graviton technology has made personal flight commonplace, giving rise to a popular aerial sport called Flying Circus. Players follow Masaya Hinata through a branching narrative driven primarily by reading dialogue and story text, presented alongside character sprites and detailed background artwork. At key moments, full CG illustrations replace the standard visuals to heighten dramatic or emotional scenes. Decision points encountered throughout the game shape the direction of the plot, steering Masaya's relationships and circumstances toward one of several distinct endings. The structure is typical of the visual novel format, emphasizing character interaction, romantic development, and the aerial sports culture that defines the game's setting.

Storyline

In a world where flying through the sky is as simple as riding a bicycle, the sport "Flying Circus" is all the rage. Following the discovery of anti-gravitons, special shoes that allow an individual to fly, Anti-Graviton Shoes, took the world by storm. And with the Grav Shoes came an entire new world for people to explore. Not long after, that revolution in technology gave birth to a brand new sport, Flying Circus, which used the shoes to make players compete in the open sky. Masaya Hinata, who was once considered a prodigy, turned his back on Flying Circus after suffering a crushing defeat, although there was also another reason... However, his former passion is reignited while teaching the new transfer student, Asuka Kurashina, how to fly. This time, Masaya chooses to enter the world of Flying Circus not as a player, but a coach. Sometimes fighting, and at other times encouraging each other, he and his team decide to challenge the top student athletes in Japan. Now, with Asuka by his side, how high will he be able to fly? This is a love story about those who met through the sky, as well as the friends who surround them.