Special episode serving as the conclusion to the anime series.

The people of the kingdom look down on the young Prince Bojji, who can neither hear nor speak. They call him "The Useless Prince" while jeering at his supposed foolishness. However, while Bojji may not be physically strong, he is certainly not weak of heart. When a chance encounter with a shadow creature should have left him traumatized, it instead makes him believe that he has found a friend amidst those who only choose to notice his shortcomings. He starts meeting with Kage, the shadow, regularly, to the point where even the otherwise abrasive creature begins to warm up to him. Kage and Bojji's unlikely friendship lays the budding foundations of the prince's journey, one where he intends to conquer his fears and insecurities. Despite the constant ridicule he faces, Bojji resolves to fulfill his desire of becoming the best king he can be.

One year ago, a UFO containing 150 aliens crash-landed off the shores of Kasai. Because no one could fix their ship, the Japanese Government decided to bestow upon them the designation "DearS" and make them into Japanese citizens, teaching them the language, customs, and culture of Japan. However, in order for them to become more familiar with human society, a home-stay program has been enacted to allow them to mingle with other humans. One misty morning, a truck carrying a capsule that housed one of these aliens ends up dropping it into the riverbank, releasing her from her confinement. She is eventually found by a high school student named Takeya Ikuhara, who saves her from being hit by a truck and takes pity on her, despite being extremely distrustful of their race and wanting nothing to do with them. Upon being named Ren, she imprints upon him as her "Master" and serves as his personal "Slave," leaving him with a "DearS" who wants to remain with him no matter what and bringing his ordinary, alien-free days to an end.

With the invention of anti-gravitational shoes known as Grav-Shoes, the ability to fly freely has become an everyday experience for the people inhabiting a four-island archipelago south of Japan. This invention has brought the people new ways of living and also a new sport known as "Flying Circus," where participants gain points by either touching floating buoys or their opponent's back. The gullible and clumsy Asuka Kurashina, newly transferred to Kunahama High School, enters this world of flight unknowingly when she is able to pull off a difficult maneuver the first time she participates in a Flying Circus match. Eventually, this leads her to join her school’s Flying Circus club. Led by their coach, Masaya Hinata, their members consist of the experienced Misaki Tobisawa and her overprotective friend, Mashiro Arisaka. Ao no Kanata no Four Rhythm follows this rookie group soaring high above the skies and toward their dreams, armed only with their unwavering passion against an uncertain future. [Written by MAL Rewrite]