Demon Slayer: Kimetsu No Yaiba Infinity Castle: Akaza Returns (2025) Review: Dazzling Spectacle, Overstuffed Opening Chapter

This Demon Slayer: Kimetsu No Yaiba Infinity Castle: Akaza Returns review starts with a simple point: it is one of the most visually ambitious anime films in years. Director Haruo Sotozaki launches the final saga with a huge, relentless action-fantasy that rewards fans and still thrills newcomers who like big spectacle.

It runs 156 minutes, and it rarely stops moving.

Demon Slayer: Infinity Castle: Akaza Returns Review: The Story So Far (No Spoilers)

The plot is easy to describe. The Demon Slayer Corps are drawn into the Infinity Castle, a warped maze of rooms, stairs and shifting gravity. Tanjiro, his sister Nezuko and the Hashira must fight terrifying Upper Rank demons as the final battle against Muzan Kibutsuji begins.

The title points to Akaza, one of the deadliest demons, and the film builds toward a confrontation with him. I will not say how it plays out. Just know that this is the first chapter of a larger finale, so expect momentum and anticipation rather than a tidy wrap-up.

If you have not watched the series, you will want some background. The film assumes you know the main characters and the stakes.

What Works in Demon Slayer: Infinity Castle

The animation is the headline. Studio Ufotable turns the castle into an Escher-like nightmare, with impossible architecture and fights that glide through light, colour and motion. Audience reviews keep returning to the sense of scale, and it is easy to see why.

Action with clarity

The battles are chaotic, but they stay readable. You always know who is fighting, where they are and what is at risk. The sound effects add real weight to each blow.

Emotion between the blows

Around the midpoint, the film slows down and leans into character and backstory. The shift gives the fights more meaning, and it gives the story room to breathe. For an animation film this action-heavy, that balance matters.

Demon Slayer: Infinity Castle Cast and Performances

The Japanese voice cast is strong. Natsuki Hanae returns as Tanjiro Kamado, giving him the sincere, determined heart the series is built on. Takahiro Sakurai voices Giyu Tomioka, Hiro Shimono plays Zenitsu Agatsuma, and Saori Hayami voices Shinobu Kocho.

Akira Ishida plays Akaza, and he gives the demon a menacing presence that is more complicated than a simple villain. Yoshimasa Hosoya also appears as Kaigaku. The cast helps the quieter scenes land as well as the loud ones.

The film is in Japanese, so expect subtitles unless a dubbed version is offered where you watch.

Where Demon Slayer: Infinity Castle Stumbles

The main complaint is pacing. Some viewers feel the film squeezes in too many side stories, cutting back and forth between fights and flashbacks. A few of those threads feel rushed, so the emotional payoff is lighter than it could be.

It also does not end with closure. This is the first part of a trilogy, and the film clearly sets up what comes next. Some will find that exciting, while others will want a more complete story on its own.

Finally, the R rating signals graphic violence. This is not a casual family movie night, and fans of gentler action movies may find it intense.

Is Demon Slayer: Infinity Castle Worth Watching?

Yes, especially if you love anime action or have followed the series so far. The animation alone justifies a big-screen viewing, and audiences have responded warmly, with a TMDB score of 8.8 out of 10 from more than 2,300 votes.

The film also made an enormous mark at the box office, with a worldwide gross of about USD 793.6 million against a reported USD 20 million budget. That success reflects how many people wanted to see this chapter.

The film is not flawless, and newcomers will feel the weight of the earlier story. Still, as a spectacle and a launch for the finale, it delivers. You can find more titles on our Animation movie reviews page.

Who Will Enjoy Demon Slayer: Infinity Castle

• Fans of the Demon Slayer series who want the final saga to begin with a bang.

• Viewers who love inventive, fluid anime action and striking visual design.

• Audiences who can handle graphic violence and do not mind a story that continues in later films.

For more background on the film, see its IMDb page.