Demon Slayer: Infinity Castle Trailer Leak Reveals Epic Battles Ahead

If you thought the Demon Slayer animation couldn’t get more awesome, think again. A leaked trailer for the upcoming Infinity Castle film has left fans worldwide both stunned and impatient for what might be the most visually spectacular anime adaptation yet.

The trailer, which quietly debuted at the end of 4K remastered screenings of Mugen Train in Japan yesterday, wasn’t meant to reach global audiences just yet. But obviously, it didn’t take long for footage to spread across the internet like wildfire.

Leaked trailer for Infinity Castle from the Japanese theatre release! pic.twitter.com/kYbZnic600

— Demon Slayer (@DemonSlayerSc) May 9, 2025

Contents of The Leaked Footage

The Nightmarish Infinity Castle Takes Center Stage

The footage opens with a dizzying view of the Infinity Castle itself, a nightmare realm of ever-shifting corridors and impossible architecture. We see Tanjiro’s confusion as he’s suddenly separated from Giyu Tomioka when the room they’re standing in transforms around them.

Zenitsu’s Moment of Truth Confirmed

For longtime fans, Zenitsu’s confrontation with Kaigaku stands out as particularly meaningful. The trailer only shows Zenitsu from behind as he approaches what appears to be Kaigaku’s domain, but even this brief glimpse carries tremendous weight. Those familiar with the manga know this is where Zenitsu must face his past and prove his growth as both a swordsman and a person.

The Battle for Vengeance: Tanjiro and Giyu vs. Akaza

Then there’s the continuation of one of the series’ most personal vendettas, Tanjiro and Giyu versus Akaza. The trailer shows the Upper Moon Three demon tearing through the castle’s corridors with terrifying speed. For Tanjiro, this isn’t just another battle but a chance to avenge his mentor Kyojuro Rengoku.

The Hashira Prepare for Their Final Stands

The trailer doesn’t forget the other pillars of the Demon Slayer Corps. We catch glimpses of Obanai showing his blade techniques to Mitsuri, Shinobu preparing for her most consequential fight, and Sanemi finding a moment of meditation amidst the chaos.

A shot of a Kasugai Crow delivering what could be last messages between separated comrades heightens this sense of finality.

Release Dates and Production Team

Demon Slayer: Infinity Castle will reach Japanese theaters on July 18, 2025, with global audiences getting their chance starting in August. North American fans will need to wait until September 12, 2025.

North American fans hoping to catch this trailer officially won’t have to wait too long as it’s scheduled to screen after the Mugen Train revival showings on May 14, 2025.

About Demon Slayer: Kimetsu No Yaiba

Demon Slayer: Kimetsu no Yaiba is a Japanese manga series written and illustrated by Koyoharu Gotoge. Its publication in Shueisha’s Weekly Shonen Jump began in February 2016 and ended in May 2020 with 23 collected tankōbon volumes.

In a world filled with demons and demon slayers, Kimetsu no Yaiba follows the lives of two siblings Tanjiro and Nezuko Kamado after— the murder of their family at the hands of a demon. Their hardship does not end there, as Nezuko’s life is spared only for her to live as a demon.

As the oldest sibling, Tanjiro vows to protect and cure his sister. The story traces the bond of this brother-sister or better yet, demon slayer and demon combo against the odds of an arch antagonist and the society.