Demon Slayer Infinity Castle Guide: Runtime, Cast and Where to Stream

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Demon Slayer: Kimetsu no Yaiba – Infinity Castle official trailer art
Demon Slayer: Kimetsu no Yaiba – Infinity Castle artwork

Film guide

Demon Slayer: Kimetsu no Yaiba – Infinity Castle
  • Film
  • 2025
  • 155 min
  • Ufotable
  • Action anime
  • Adventure anime
  • Fantasy anime
  • Thriller anime
Stars
Natsuki Hanae · Akari Kitō · Akira Ishida

Images: Crunchyroll

Where to watch Demon Slayer: Kimetsu no Yaiba – Infinity Castle

Demon Slayer: Infinity Castle streams on Crunchyroll in the US, included with a subscription. Crunchyroll lists it as Infinity Castle I – it is the first of three films – and it runs 155 minutes, in Japanese with subtitles or in the English dub.

Streaming options in the United States, updated Sep 15, 2026. More from crunchyroll.com. Service logos are trademarks of their owners.

Videos 2

  • Demon Slayer: Kimetsu no Yaiba Infinity Castle | Official Trailer | CrunchyrollCrunchyroll · YouTube
  • Demon Slayer: Kimetsu no Yaiba Infinity Castle | Main Trailer | CrunchyrollCrunchyroll · YouTube

Part one of three, and the four arcs you have to clear first

This is the one Demon Slayer entry you cannot start with. Crunchyroll does not call it Infinity Castle; it calls it Infinity Castle I, and that numeral is the single most useful fact about it. The film is the first of a planned trilogy, it opens on the exact frame the Hashira Training arc ended on, and it spends none of its 155 minutes reintroducing anyone. Four television arcs stand in front of it – Mugen Train, Entertainment District, Swordsmith Village and Hashira Training – and our Demon Slayer watch order lays them out in sequence.

Demon Slayer: Kimetsu no Yaiba – Infinity Castle trailer still
A still from the official Demon Slayer: Kimetsu no Yaiba – Infinity Castle trailer. Image: Crunchyroll

The runtime is the other thing to plan around. At 155 minutes it is comfortably the longest thing the franchise has produced, roughly the length of six and a half television episodes, and Ufotable structures it as three near-continuous duels rather than a film with quiet passages. Haruo Sotozaki directed from a screenplay credited to Ufotable itself, with Yuki Kajiura and Go Shiina scoring; Aniplex and Toho released it in Japan on July 18, 2025 and Crunchyroll, through Sony Pictures Releasing, put it in US theaters on September 12, 2025. It went on to take Film of the Year at the 10th Crunchyroll Anime Awards and a Golden Globe nomination for Best Animated Feature – the release and awards record has the full list.

Demon Slayer: Kimetsu no Yaiba – Infinity Castle trailer still
A second look, from the other official Demon Slayer: Kimetsu no Yaiba – Infinity Castle trailer. Image: Crunchyroll

What that means practically: the film ends without resolving the Infinity Castle, because two more films are coming. If you want the finished story today, you do not have it – you have the first third of it. For the television run that leads here, our full Demon Slayer episode guide covers all 63 episodes with air dates and premises, and we covered the streaming date itself in our report on the Crunchyroll premiere. If you are building an anime queue around it, our Jujutsu Kaisen guide is the other MAPPA-era shonen heavyweight on the same service.

Demon Slayer: Kimetsu no Yaiba – Infinity Castle cast 22

  • Natsuki Hanae
    Natsuki HanaeTanjiro Kamado
  • Akari KitōNezuko Kamado
  • Hiro ShimonoZenitsu Agatsuma
  • Yoshitsugu Matsuoka
    Yoshitsugu MatsuokaInosuke Hashibira
  • Reina UedaKanao Tsuyuri
  • Nobuhiko Okamoto
    Nobuhiko OkamotoGenya Shinazugawa
  • Takahiro Sakurai
    Takahiro SakuraiGiyu Tomioka
  • Katsuyuki Konishi
    Katsuyuki KonishiTengen Uzui
  • Kengo KawanishiMuichiro Tokito
  • Saori Hayami
    Saori HayamiShinobu Kocho
  • Kenichi SuzumuraObanai Iguro
  • Tomokazu Seki
    Tomokazu SekiSanemi Shinazugawa
  • Kana Hanazawa
    Kana HanazawaMitsuri Kanroji
  • Tomokazu SugitaGyomei Himejima
  • Mamoru Miyano
    Mamoru MiyanoDoma
  • Akira Ishida
    Akira IshidaAkaza
  • Yoshimasa Hosoya
    Yoshimasa HosoyaKaigaku
  • Zach Aguilar
    Zach AguilarTanjiro Kamado (English dub)
  • Abby Trott
    Abby TrottNezuko Kamado (English dub)
  • Aleks Le
    Aleks LeZenitsu Agatsuma (English dub)
  • Bryce Papenbrook
    Bryce PapenbrookInosuke Hashibira (English dub)
  • Lucien Dodge
    Lucien DodgeAkaza (English dub)
Director
Haruo Sotozaki
Screenplay
Ufotable
Music
Yuki Kajiura, Go Shiina
Studios
Ufotable

Photos via Wikimedia Commons. Natsuki Hanae: Gage Skidmore, CC BY-SA 3.0; Yoshitsugu Matsuoka: HoneyWorks OFFICIAL, CC BY 3.0; Nobuhiko Okamoto: adiSubs, CC BY-SA 4.0; Takahiro Sakurai: Okazaki, Japan, CC BY 2.0; Katsuyuki Konishi: William Tung from USA, CC BY-SA 2.0; Saori Hayami: Dick Thomas Johnson from Tokyo, Japan, CC BY 2.0; Tomokazu Seki: Tokyo, Japan, CC BY 2.0; Kana Hanazawa: Dick Thomas Johnson from Tokyo, Japan, CC BY 2.0; Mamoru Miyano: Dick Thomas Johnson from Tokyo, Japan, CC BY 2.0; Akira Ishida: M.A.LasTroniN910, CC BY-SA 3.0; Yoshimasa Hosoya: Dick Thomas Johnson from Tokyo, Japan, CC BY 2.0; Zach Aguilar: John Manard, CC BY-SA 2.0; Abby Trott: Pedro Heshike for Galaxy Con, CC BY 2.0; Aleks Le: Gage Skidmore, CC BY-SA 4.0; Bryce Papenbrook: Gage Skidmore, CC BY-SA 3.0; Lucien Dodge: Sirlionhart, CC BY 3.0.

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Frequently Asked Questions

Where can I watch Demon Slayer: Infinity Castle?

It streams on Crunchyroll in the US with a subscription, listed there as Demon Slayer: Kimetsu no Yaiba Infinity Castle I, in sub and dub.

How long is Demon Slayer: Infinity Castle?

155 minutes – Crunchyroll’s own player lists it as 2 hours 34 minutes.

What do I need to watch before it?

The four TV arcs, ending with Hashira Training. The film opens the moment that season ends, and it does not recap.

When did Demon Slayer: Infinity Castle come out?

July 18, 2025 in Japan and September 12, 2025 in US theaters. It reached Crunchyroll on July 28, 2026.

Is this the whole Infinity Castle story?

No. It is part one of a planned trilogy, which is why Crunchyroll numbers it Infinity Castle I.

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Trevor Maddison
Trevor Madison is a Senior Comic Book Article Writer at ComicBookCo.com, where he covers the latest in comics, superhero films, and comic-inspired television. Based in Portland, Oregon, Trevor brings a lifelong passion for storytelling, pop culture, and fandom communities to his work. His writing blends insider knowledge with an approachable tone, making his articles resonate with both hardcore collectors and casual fans. Trevor’s expertise spans across decades of comic history, film adaptations, and industry trends. Whether he’s breaking down the cultural impact of a new Marvel release, revisiting iconic story arcs from DC, or highlighting indie creators pushing the medium forward, Trevor is dedicated to bringing readers thoughtful insights and engaging content. When he’s not writing, you’ll likely find him browsing local comic shops, attending fan conventions, or re-watching his favorite superhero shows.

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