To promote the upcoming film trilogy of Demon Slayer, the team behind the anime re-screened the very first film in Japanese cinemas. At the end, there was a special treat that is now causing a lot of excitement.
What was there to see? On May 9, 2025, the very first film of Demon Slayer, Mugen Train, was re-released in Japanese cinemas. The film summarizes the first seven episodes of the second season. Tanjiro and his friends join Rengoku, who wants to defeat a demon on a mysterious train.
During the screening, there was also an unreleased trailer for the upcoming film Infinity Castle. The last story arc of the manga Demon Slayer will be released as a trilogy in cinemas, starting with Infinity Castle.
The trailer was presumably meant to hype the upcoming movie. But the Demon Slayer team is now angry about the behavior of the fans.
Demon Slayer fans could end up in jail
What was the problem? During the screening, there were several viewers who secretly filmed the trailer. They posted the trailer on social media, where several fans could watch the exclusive video material.
By doing this, the leakers deprived the Demon Slayer team of the opportunity to present the trailer to the public after the cinema screenings. On X, the team’s account shows noticeable anger. They are even threatening severe consequences.
What threatens the leakers? The account clarifies that secretly filming is a criminal offense. By uploading, the leakers also commit copyright infringement. In combination, this can lead to up to 10 years of imprisonment or a fine of approximately 60,720 Euros in Japan. In the worst case, both could be threatened.
A secretly recorded video of the cinema-exclusive trailer for the “Mugen Castle Arc,” which plays at the end of the currently shown re-release of “Demon Slayer: Kimetsu no Yaiba the Movie: Mugen Train,” has been found on the internet.
Filming secretly in a cinema is a crime under the “Anti-Cinema Piracy Act” (Act to Prevent Secret Filming).
Moreover, uploading secretly recorded footage to X, YouTube, TikTok, Facebook, etc. is a copyright violation.
Any copyright violation that contravenes the Anti-Cinema Piracy Act and copyright law can be punished with imprisonment of up to 10 years or a fine of up to 10 million yen or both.
With this threat, the Demon Slayer team aims to warn anyone who secretly films the trailer. They likely hope that viewers will think twice about uploading the trailer online.
There have already been several cases where a judgment against leakers was enforced. A player had released story spoilers and cut scenes on his YouTube channel. He had to go to prison and pay a fine: Man sentenced to 2 years in prison for posting gameplay and spoilers on YouTube
