Demon Slayer: Infinity Castle – Akaza Sairai Film Reveals Stunning New Trailer, Theme Songs by Aimer and LiSA

By Shanks
6 Min Read

The Demon Slayer anime saga is officially entering its final phase with the upcoming Infinity Castle film trilogy, and the hype is real. The newly revealed trailer for the first film, Demon Slayer: Kimetsu no Yaiba Infinity Castle – Akaza Sairai (The Return of Akaza), dropped during the rebroadcast of the Mugen Train movie in Japan—and it came with major announcements.

Not only does the trailer confirm the Japanese theatrical release date of July 18, 2025, but it also reveals that two of anime’s most beloved artists, Aimer and LiSA, are performing brand-new theme songs. Plus, Aniplex and Crunchyroll have released the full global release schedule—and it’s shaping up to be the franchise’s most expansive worldwide launch yet.

Demon Slayer: Kimetsu no Yaiba Infinity Castle – Akaza Sairai (The Return of Akaza) Movie Trailer

Demon Slayer Movie 1 Theme Songs: Aimer and LiSA Return

The trailer introduces two powerful new tracks:

  • Aimer performs “Taiyō ga Noboranai Sekai” (A World Where the Sun Never Rises)
  • LiSA performs “Zankoku no Yoru ni Kagayake” (Shine in the Cruel Night)
Aimer and Lisa Performing for the Demon Slayer Infinity castle movie theme songs

Both songs are set to release on July 18 across global music streaming platforms, syncing with the film’s Japanese premiere. Their return is especially significant—LiSA’s “Gurenge” and “Homura” defined the early chapters of Demon Slayer, while Aimer’s haunting tracks amplified the emotional climax of the Entertainment District Arc.

Official Global Release Schedule for the Infinity Castle Movie 1

Aniplex and Crunchyroll are making sure fans across the world get to experience the Infinity Castle saga almost simultaneously. Below is the complete breakdown of the international release dates for Demon Slayer: Kimetsu no Yaiba Infinity Castle Movie 1 – Akaza Sairai:

Japan Release

  • July 18 – Premieres nationwide in 443 theaters, including IMAX formats (franchise record)

Asia Release

  • August 14: Malaysia, Singapore, Pakistan
  • August 15: Cambodia, Indonesia, Vietnam
  • August 20: Philippines

Latin America, Middle East, and Europe

  • September 11:
    Mexico, Chile, Peru, Argentina, Bolivia, Brazil
    Caribbean (Jamaica, Aruba, Suriname, Trinidad & Tobago, Curaçao)
    Central America, Colombia, Dominican Republic, Ecuador, Paraguay, Uruguay, Venezuela
    Australia, New Zealand, Thailand
    Armenia, Azerbaijan, Bahrain, Croatia, Czech Republic
    Denmark, Egypt, Ethiopia, Georgia, Greece, Hungary, Iceland
    Iraq, Israel, Italy, Jordan, Kazakhstan, Kuwait, Lebanon, Lithuania, Macedonia, Netherlands
    Oman, Portugal, Qatar, Saudi Arabia, Serbia, Slovakia, Slovenia
    Switzerland (Italian-speaking), Syria, Ukraine, United Arab Emirates

North America, Africa, and Europe

  • September 12:
    United States, Canada, India, Mongolia, Spain, Bulgaria, Estonia
    Finland, Kenya, Latvia, Nigeria, Norway, Poland, Romania
    Southern Africa, Sweden, Turkey, United Kingdom

Western Europe

  • September 17:
    Belgium, France (French-speaking), Luxembourg
    Switzerland (French-speaking)

Eastern Europe

  • September 18: Moldova

German-Speaking Europe

  • September 25:
    Austria, Germany, Switzerland (German-speaking)

With theatrical screenings in over 150 countries and regions, this rollout officially marks Infinity Castle as the largest global release in the franchise’s history.

Production Staff and Studio Excellence

The film is helmed by veteran director Haruo Sotozaki, with animation and screenplay by ufotable—a studio known for redefining action anime aesthetics and delivering breathtaking, near-cinematic visuals.

Their track record includes all previous Demon Slayer arcs, and with Infinity Castle demanding high-scale battles, complex movement, and emotional depth, fans can expect nothing short of excellence.

Plot Focus: Akaza’s Return

Demon Slayer: Kimetsu no Yaiba Infinity Castle – Akaza Sairai (The Return of Akaza) Visual

Subtitled Akaza Sairai (The Return of Akaza), the film will spotlight the return of Upper Rank Three, Akaza, the demon responsible for one of the most tragic moments in the series. This arc is where Demon Slayer enters its most intense emotional and action-driven phase.

Without spoiling too much for anime-only viewers, expect:

  • Gripping combat sequences in the Infinity Castle
  • Major Hashira involvement
  • Flashbacks exploring Akaza’s past
  • High-stakes development for Tanjiro, Giyu, and others

The Infinity Castle trilogy adapts the manga’s final arc, one of the most highly acclaimed in modern shonen history.

A Quick Recap of the Demon Slayer Anime So Far

If you’re catching up or need a refresher, here’s the journey up to this point:

ArcPremiereFormatHighlight
Unwavering Resolve ArcApr 2019TV (26 eps)Tanjiro & Nezuko’s beginning
Mugen TrainOct 2020FilmRengoku’s iconic battle
Entertainment District ArcDec 2021TV (11 eps)Daki & Gyutaro vs. Tengen
Swordsmith Village ArcApr 2023TV (11 eps)Mitsuri & Muichiro’s growth
Hashira Training ArcMay–Jun 2024TV (8 eps)Final prep before the war

Every arc has escalated the emotion, scale, and stakes, building toward this moment. The Infinity Castle films are not just another chapter—they’re the climax of the saga.

Final Thoughts: The Beginning of the End

Demon Slayer: Infinity Castle – Akaza Sairai is more than a movie—it’s the opening act of the franchise’s grand finale. With world-class animation, unforgettable music, and a global fanbase more connected than ever, this film marks a pivotal moment in anime history.

Get ready for heartbreak, catharsis, and battle choreography like you’ve never seen before. Whether you’re watching in Japan, North America, Europe, or Asia—the wait is nearly over.

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