One day, a mysterious event suddenly occurred. For some reason, Jibanyan's favorite sweet: Chocobars, and Komasan's favorite: soft-serve ice cream, began to disappear from this world one after another. Why? A mysterious Yo-kai appears and tells them, "The way to bring Chocobars and soft-serve ice cream back to this world is for Jibanyan and Komasan to fight." Meanwhile, Hovernyan and Komasan's sister, Komami, who is a spy, discover that there is a Yo-kai behind this incident. There was a great conspiracy hidden. In addition, the unprecedented crisis surrounding Lord Emma, the strongest being in the Yo-kai World, is revealed! Where is Jibanyan VS Komasan? And who is the mastermind behind the incident?
Unfortunately the movie Youkai Watch ♪ Movie 8: Jibanyan vs. Komasan - Monge Daikessen da Nyan is not yet available on HBO Max.
| Directing | Ryousuke Senbo | Director |
| Writing | Yoichi Kato | Screenplay |
| Visual Effects | Shunya Yamada | Character Designer |
| Sound | Kenichiro Saigo | Music |
