Demon Slayer: Infinity Castle Hits Netflix September 28 — Everything You Need to Know

The Highest-Grossing Anime Phenomenon Comes Home

Mark your calendars, anime fans: Demon Slayer: Kimetsu no Yaiba Infinity Castle officially lands on Netflix on September 28, 2026. After absolutely demolishing box offices around the world in its theatrical run, the first film in the epic Infinity Castle trilogy is finally coming to streaming — and if you missed it in cinemas, this is your moment.

Why Infinity Castle Is a Big Deal

Let's set the scene. The Demon Slayer anime wrapped its four-season TV run back in 2024, leaving fans hungry for the manga's jaw-dropping final arc. Studio Ufotable answered by turning the entire Infinity Castle saga into a cinematic trilogy — and Part 1, running a hefty 155 minutes, throws Tanjiro Kamado, Nezuko, and the Hashira straight into Muzan Kibutsuji's shifting demon fortress. Without spoiling anything: the fights in this movie (yes, including that confrontation with Akaza) are being called some of the best-animated action sequences ever put on screen. Critics and fans alike have labeled it a genuine contender for the best anime movie of all time, and its theatrical numbers back up the hype.

What to Expect on Netflix

The film arrives on Netflix USA and other regions on September 28, though details on available dubs and subs are still trickling out — expect the usual English and Japanese audio options at minimum. New to the series? You will want to watch the four TV seasons first (also on Netflix and Crunchyroll) so the emotional gut-punches actually land. Already a fan? Rewatch Mugen Train and the Swordsmith Village arc as a warm-up, then clear three hours, turn off your phone, and prepare to feel things. With Parts 2 and 3 of the trilogy still to come, September 28 is just the beginning of the end — and Demon Slayer is going out swinging.