Kimetsu no Yaiba Movie: Mugenjou-hen Manner Eizou

This short animation features Uzui Tengen and his wives in a comedic segment. It was screened before the main movie and serves as a lighthearted bonus.

Kimetsu no Yaiba Movie: Mugenjou-hen Manner Eizou is a single movie, not an episode series. It consists of one part.

This was a special animation screened before the Kimetsu no Yaiba: Mugen Train movie. Availability outside of that theatrical screening may vary.

Yes, it is part of the Kimetsu no Yaiba franchise and was screened as a special animation before the Mugen Train movie. It features characters from the series, specifically Uzui Tengen and his wives.