Aokana - Four Rhythms Across the Blue

Aokana - Four Rhythms Across the Blue, known in Japan as Ao no Kanata no Four Rhythm (蒼の彼方のフォーリズム, Ao no Kanata no Fō Rizumu, subtitled Beyond the sky, into the firmament), officially abbreviated as Aokana (あおかな) and translated as Four Rhythms Across the Blue, is a Japanese adult visual novel developed by Sprite and released for Windows on November 28, 2014. The game was ported to the PlayStation Vita, PlayStation 4, and Nintendo Switch. The plot follows high school student Masaya Hinata as he coaches fellow students Asuka Kurashina, Misaki Tobisawa, Mashiro Arisaka, and Shion Aoyagi in the sport of "flying circus", wherein competitors travel through the sky via shoes with anti-gravity properties. Depending on the route taken, Masaya can enter a romantic relationship with either Asuka, Misaki, Mashiro, or Rika Ichinose, a student from a rival school and his neighbor.

A manga adaptation began publication in Comp Ace magazine in October 2015. A spin-off mobile game was released in October 2016, followed by two fandiscs in 2017 and 2022 respectively. A sequel was announced for production but has since been put on hold. An anime television series adaptation, produced by Gonzo, directed by Fumitoshi Oizaki, and written by Reiko Yoshida aired between January and March 2016. Crunchyroll and Funimation co-released the anime television series on Blu-ray in North America in 2018.