The first film in Demon Slayer's Infinity Castle trilogy is nearly here, and one official trailer for the movie has already been released. Now, another sneak peek at the film is on the way, but there's a twist: only attendees of a Demon Slayer fan event will be able to watch the exclusive clip of the movie.
According to the official Kimetsu.com website, this Infinity Castle teaser is only available at an screening of Demon Slayer's most popular movie, Mugen Train. On Friday, May 9th, fans can visit movie theaters to both rewatch the iconic Mugen Train arc and catch another glimpse of the much-awaited first film in Demon Slayer's finale trilogy.
A Demon Slayer Event Will Feature a Sneak Peek at the Infinity Castle Trilogy
A New Infinity Castle Trailer Will Only Be Shown at The Exclusive Mugen Train Screening
In Japan, on Friday, May 9, fans will be treated to not only a theatrical screening of Demon Slayer: Mugen Train, but another, more in-depth look at the franchise's trilogy too. The Kimetsu.com website includes all the details of the showing, noting that the screening will last for 5 weeks in theaters. With the first Infinity Castle film's release date growing closer every day, now is the perfect time for another sneak peek at what is to come for the massively popular shonen franchise. The movie's release date is July 18, 2025, in Japan and September 12, 2025, in the United States and Canada.

Demon Slayer: Kimetsu no Yaiba - Infinity Castle Movie Lands U.S Release Date with Epic Trailer
Demon Slayer's first Infinity Castle movie gets a US release date, as revealed in the awesome new trailer for the anime's final act.
Demon Slayer's team is taking an innovative approach by portraying its final few chapters as a film trilogy rather than releasing multiple anime seasons. However, this decision seems to be the best choice for Demon Slayer specifically, since its Infinity Castle and Sunrise Countdown arcs are so dramatic and intense, they deserve to be viewed on the big screen. Furthermore, Demon Slayer's past film releases have been whopping successes, and Mugen Train was the greatest box office hit of them all so far. Mugen Train's 2025 re-release will only further reveal how beloved the film really is.
Mugen Train Deserves a Re-Release More Than Any Other Demon Slayer Film
Mugen Train Is Still the #1 Grossing Anime Film Ever, Over Four Years After Its First Theatrical Release
Demon Slayer: Kimetsu no Yaiba - The Movie: Mugen Train was first released in theaters on April 23, 2021, and it sured all expectations, earning itself the coveted spot of #1 highest-grossing anime film of all time, a title it has held steadily ever since. More anime movies are being released in recent years than ever before, as the entertainment medium grows in popularity, but no new release has yet to dethrone Mugen Train from the top. The Mugen Train arc of the manga was portrayed as both a theatrical film and an anime season, but the film specifically captured viewers' hearts.
Anime executives have predicted that Demon Slayer's Infinity Castle trilogy could potentially beat Mugen Train's astounding record, which would be no easy feat, since the movie earned over $507 million worldwide during its time in theaters. The Demon Slayer: Mugen Train theatrical screening is an amazing opportunity for fans to not only refresh their memories of one of the series' best arcs and most pivotal films before the series' conclusion, but also provides a chance for the most devoted viewers to preview the 2025 Infinity Castle trilogy before anyone else in the world.
Source: Kimetsu.com
Demon Slayer: Kimetsu no Yaiba is a wildly popular anime and manga franchise created by Koyoharu Gotouge. Set in Taishō-era Japan, it follows Tanjiro Kamado as he battles demons and seeks a cure for his sister, Nezuko, who was turned into one. The franchise includes a manga, anime TV series, films, video games, and spin-offs. Known for its stunning animation and gripping storyline, Demon Slayer is one of the highest-grossing media franchises of all time.