The film follows Tanjiro Kamado and the Demon Slayer Corps as they are drawn into the shifting stronghold known as the Infinity Castle for a final confrontation with the forces of Muzan Kibutsuji.

Demon Slayer Infinity Castle will stream on Crunchyroll from 9 April 2026, following its theatrical run in Japan and international markets. Viewers will need an active Crunchyroll subscription to access the film on the platform. Crunchyroll has been the global home of the Demon Slayer: Kimetsu no Yaiba anime and is now extending that role to the Infinity Castle movie.

In Demon Slayer Infinity Castle OTT, Tanjiro enters a dark, ever-shifting dimension controlled by demons after the Demon Slayer Corps are dragged into Muzan's stronghold. The film sees Tanjiro, Nezuko, Zenitsu and Inosuke separated across the castle's warped corridors as they face swarms of powerful enemies and search for Muzan. The story builds directly on the anime's Hashira Training arc, turning long-running character bonds and losses into the emotional core of the finale.

Demon Slayer Infinity Castle OTT features Natsuki Hanae as Tanjiro Kamado, Akari Kitō as Nezuko Kamado, Hiro Shimono as Zenitsu Agatsuma and Yoshitsugu Matsuoka as Inosuke Hashibira, with Reina Ueda and Nobuhiko Okamoto among the supporting cast. The movie is directed by Haruo Sotozaki and animated by Ufotable, whose work has been widely praised for its fluid action and rich lighting. Early ratings and reviews have highlighted the film's intense set-pieces and emotional pay-off, cementing Infinity Castle as one of the standout anime films of recent years.

Demon Slayer Infinity Castle OTT offers more than a simple add-on; it delivers a full-scale, visually striking conclusion that rewards long-time viewers and makes a compelling case for revisiting the series from the beginning.