Demon Slayer: Infinity Castle – Budget, Box Office & Why It’s Breaking Records

Demon Slayer: Infinity Castle is smashing records left and right — and according to the latest numbers, it has already blasted past $730 million worldwide. From its budget to its booming box office run to the wave of fan reactions, here’s everything you need to know.

The Hype: What Is Infinity Castle?

The Demon Slayer hype train just doesn’t stop! After Mugen Train smashed every record imaginable, fans knew the Infinity Castle arc was going to be huge. The movie dropped in Japan on July 18, 2025, kicking off the final big battle of the series. This is only the first part of the Infinity Castle saga, and ufotable once again took charge of the animation (yep, the studio that makes every frame look like art). TOHO handled the Japan release, while Crunchyroll and Sony brought it overseas.

Budget & Box Office: How Big Did It Go?

Here’s the fun part: Infinity Castle reportedly had a budget of around $20 million. Pretty modest when you compare it to Hollywood blockbusters — but the returns? Absolutely insane.

Japan: The movie became a phenomenon almost instantly. After opening to a massive ¥7.3 billion ($49.7 million) in just four days, the film eventually finished its Japanese theatrical run with around ¥40.2 billion (roughly $271 million). That made it one of the highest-grossing films in Japanese box office history.
China: The big update — China gave the movie a massive boost. On opening weekend alone it pulled in about $52.7 million, and it’s well on its way to cross $100 million in the Chinese market. This is one of the strongest showings for any anime film ever released there.
North America: The movie also shattered records overseas. It debuted with a massive $70 million opening weekend in North America, becoming the biggest anime opening ever in the region and one of the biggest openings ever for an international animated film.
Worldwide: And now for the crazy part — Demon Slayer: Infinity Castle has reportedly finished its theatrical run with over $800 million worldwide, with several trade reports estimating the final total at around $802 million.

So yeah… from a $20M budget to more than $800M globally? That’s not just a blockbuster anymore — that’s anime history being made.

What Fans & Critics Are Saying

The Good Stuff: Fans can’t stop praising the animation and fight scenes — ufotable really went all out to make every frame look like pure art. It’s the kind of spectacle you just have to see in a theater.
The Not-So-Good: A lot of people felt the movie was too heavy on backstories. Since Infinity Castle dives into the pasts of both the Hashira and the demons, some viewers thought it slowed down the pacing and stretched the runtime. As one reviewer put it: