The official Demon Slayer: Kimetsu no Yaiba X account issued a legal warning in response to the unauthorized leak of a trailer for the highly anticipated Infinity Castle film. The trailer, exclusively shown during revival screenings of Demon Slayer: Kimetsu no Yaiba – The Movie: Mugen Train in Japan starting May 9, was secretly recorded in theaters and shared online across platforms like X, YouTube, TikTok, and Facebook. The leak has prompted a swift reaction from the franchise, highlighting the legal and ethical issues surrounding unauthorized recordings.
Demon Slayer Staff's Official Warning After Infinity Castle Trailer Got Leaked
The statement from the Demon Slayer team emphasized that filming in theaters violates Japan’s Law for Prevention of Unauthorized Recording of Films. Additionally, uploading such footage constitutes copyright infringement under the Film Piracy Prevention Act and the Copyright Act. Violators face severe penalties, including up to 10 years of imprisonment, fines of up to 10 million yen (approximately $64,000 USD), or both. The warning underscores the franchise’s commitment to protecting its intellectual property as excitement builds for the Infinity Castle trilogy.
Check out the latest key visual for the Demon Slayer: Kimetsu no Yaiba – Infinity Castle Arc movie trilogy reminding us of its September 12 release date:
The leaked trailer was part of a special promotion tied to the Mugen Train revival screenings, which began in Japan on May 9 and are scheduled for North America on May 14, 2025, through Crunchyroll. These screenings offer fans an exclusive look at Infinity Castle footage, heightening anticipation for the trilogy’s release. Crunchyroll, in collaboration with Sony Pictures Entertainment, will distribute the films worldwide, excluding select Asian territories. International release dates range from August 14 to September 25, 2025, with North America confirmed for September 12. You can check out the other international release dates here.
The Infinity Castle trilogy marks a significant milestone for the Demon Slayer franchise, which has captivated audiences since its anime debut in 2019. The series, based on Gotoge’s manga serialized from 2016 to 2020, follows Tanjiro’s quest to save his demonized sister, Nezuko, and defeat Muzan. With a packed 2025 that includes the video game Hinokami Chronicles 2 and new merchandise, the franchise continues to dominate the anime landscape.
Infinity Castle Film: A Glimpse into the Final Battle
The Infinity Castle movie trilogy, set to premiere in Japan on July 18, 2025, with a global rollout starting August 14, adapts the climactic Infinity Castle Arc from Koyoharu Gotoge’s manga. This arc, spanning 47 chapters, is the longest in the series and depicts the Demon Slayer Corps’ ultimate confrontation with Muzan Kibutsuji, the demon king, and his Upper Rank demons. The story follows Tanjiro Kamado, a young demon slayer, and his comrades—Zenitsu Agatsuma, Inosuke Hashibira, and the elite Hashira—as they are drawn into the demons’ stronghold, the Infinity Castle, after a desperate mission to protect the Corps’ leader. The trilogy promises intense battles, emotional stakes, and stunning animation from studio ufotable, building on the success of Mugen Train, which became the highest-grossing anime film of all time
Crunchyroll shared a description for the first film of the Demon Slayer: Kimetsu no Yaiba Infinity Castle film trilogy:
Tanjiro Kamado – a boy who joined an organization dedicated to hunting down demons called the Demon Slayer Corps after his younger sister Nezuko was turned into a demon. While growing stronger and deepening his friendships and bonds with fellow corps members, Tanjiro has battled many demons with his comrades – Zenitsu Agatsuma and Inosuke Hashibira. Along the way, his journey has led him to fight alongside the Demon Slayer Corps’ highest-ranking swordsmen, the Hashira, including Flame Hashira Kyojuro Rengoku aboard the Mugen Train, Sound Hashira Tengen Uzui within the Entertainment District, as well as Mist Hashira Muichiro Tokito and Love Hashira Mitsuri Kanroji at the Swordsmith Village. As the Demon Slayer Corps members and Hashira engaged in a group strength training program, the Hashira Training, in preparation for the forthcoming battle against the demons, Muzan Kibutsuji appears at the Ubuyashiki Mansion. With the head of the Demon Corps in danger, Tanjiro and the Hashira rush to the headquarters but are plunged into a deep descent to a mysterious space by the hands of Muzan Kibutsuji. The destination of where Tanjiro and Demon Slayer Corps have fallen is the demons’ stronghold – the Infinity Castle. And so, the battleground is set as the final battle between the Demon Slayer Corps and the demons ignites.
As the Infinity Castle trilogy approaches, the Demon Slayer franchise remains a cultural juggernaut, but this incident highlights the challenges of managing fan enthusiasm in the digital age. Fans are encouraged to experience the trailer through authorized screenings and await the trilogy’s official release to witness the Demon Slayer Corps’ final stand in all its glory.
Here's the release date video for the first Infinity Castle film:
