Synopsis
Demon Slayer: Kimetsu no Yaiba Infinity Castle (2025) is a Japanese anime action film you can watch online on iFILM. Directed by Haruo Sotozaki for studio ufotable, with Aniplex and Shueisha producing, the 155-minute theatrical film brings the Demon Slayer saga to its final confrontation. The global box office crossed $730 million within weeks of the July 2025 release.
The Hashira Training arc ends without warning. Muzan Kibutsuji himself strikes the Ubuyashiki estate, then pulls every demon slayer into the Infinity Castle — an impossible structure with no fixed geometry, where each Hashira faces an Upper Rank demon alone. Tanjiro Kamado (voiced by Natsuki Hanae) confronts Akaza (Akira Ishida). Shinobu Kocho (Saori Hayami) takes on Doma (Mamoru Miyano). Zenitsu Agatsuma (Hiro Shimono) meets an enemy he thought was gone. None of them chose this ground. Muzan did.
Ufotable's animation pushes every technique the studio developed across four seasons into a single theatrical runtime. Stream Demon Slayer: Infinity Castle (2025) full movie online on iFILM.
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