Myriad Colors Phantom World: Limitless Phantom World

Limitless Phantom World, or Musaigen no Phantom World: Kumanomi Sennyuu!, was produced by Kyoto Animation in 2016 as a special original video animation bundled with the seventh volume of the anime series' home media release. The episode serves as an extension of the primary narrative, which is based on the light novel series by Soichirou Hatano. It was created to provide a lighthearted, self-contained adventure that emphasizes the character dynamics established in the main television broadcast, maintaining the studio's signature attention to fluid animation and vibrant character design.

The production team, led by director Tatsuya Ishihara, focused on capturing the comedic and whimsical nature of the source material while utilizing the distinct visual identity Kyoto Animation is known for. The design of the phantoms and the characters’ combat abilities were intended to showcase the studio's technical prowess in action choreography. While the original series received a mixed critical reception regarding its pacing and thematic depth, this special was generally viewed as a welcome, breezy coda for those who enjoyed the show's aesthetic and its core ensemble of supernatural investigators.