The highly anticipated “Demon Slayer: Kimetsu no Yaiba – The Movie: Infinity Castle Part 1: Akaza Returns” has unveiled its full trailer, confirming that renowned artists Aimer and LiSA will contribute theme songs to the film. This announcement comes as the anime prepares to adapt the climactic Infinity Castle Arc, promising a monumental cinematic experience for fans worldwide.
The Significance of the Infinity Castle Arc
The Infinity Castle Arc is a pivotal storyline in the Demon Slayer: Kimetsu no Yaiba manga, serving as the penultimate arc before the series’ grand finale, the Sunrise Countdown arc. This arc plunges the Demon Slayer Corps into Muzan Kibutsuji’s shifting, otherworldly stronghold – the Infinity Castle. Within this dimension, gravity is warped, and rooms continuously reconfigure, creating a chaotic and deadly battleground where the Demon Slayers face off against Muzan’s most formidable Upper Rank demons.
The movie trilogy will pick up directly after the Hashira Training Arc, with Muzan Kibutsuji initiating his final assault on the Demon Slayer Corps headquarters. Tanjiro Kamado, alongside the Hashira, finds himself drawn into the treacherous depths of the Infinity Castle, setting the stage for the definitive end to the human-demon conflict. Key battles teased in the new trailer include Tanjiro’s renewed confrontation with Akaza, Shinobu Kocho facing the demon responsible for her sister’s death, and Zenitsu Agatsuma battling Kaigaku.
A Musical Legacy: Aimer and LiSA’s Return
The involvement of Aimer and LiSA in the “Demon Slayer: Infinity Castle” film marks a highly anticipated return for both artists, who have become synonymous with the franchise’s impactful soundtracks. Their previous contributions have been integral to the anime’s widespread success and emotional resonance.
LiSA, known for her powerful vocals and energetic performances, has been a core part of the Demon Slayer phenomenon since its inception. Her iconic song “Gurenge” served as the opening theme for the first season of Demon Slayer: Kimetsu no Yaiba, becoming a cultural phenomenon. She also delivered “Homura,” the award-winning theme song for Demon Slayer: Kimetsu no Yaiba – The Movie: Mugen Train, and “Akeboshi” for the Mugen Train Arc TV adaptation. For the Infinity Castle film, LiSA performs “Zankoku no Yoru ni Kagayake” (“Shine in the Cruel Night”).
Aimer, celebrated for her unique vocal timbre and evocative melodies, joined the Demon Slayer universe with “Zankyou Sanka” and “Asa ga Kuru,” the opening and ending themes for the Entertainment District Arc. Her debut contributions resonated deeply with fans, further cementing her place in the franchise’s musical landscape. Aimer’s new song for the Infinity Castle film is titled “Taiyō ga Noboranai Sekai” (“A World Where the Sun Never Rises”).
Both new theme songs are set to be available on global streaming platforms starting July 18, 2025.
Release Details and Global Reach
The first film in the “Demon Slayer: Kimetsu no Yaiba Infinity Castle” trilogy, officially titled “Demon Slayer: Kimetsu no Yaiba Infinity Castle – Akaza Sairai” (The Return of Akaza), is scheduled to premiere in Japan on July 18, 2025. This cinematic event will play on a record-breaking 443 screens across Japan, including IMAX screenings.
For international audiences, Crunchyroll and Sony Pictures Entertainment are distributing the film globally. Worldwide releases are slated to begin in August 2025. Specific international release dates include:
- August 12: Thailand
- August 14: Hong Kong, Malaysia, Pakistan, Singapore
- August 15: Cambodia, Indonesia, Vietnam
- August 20: Philippines
- September 12: United States, Canada, United Kingdom, India, and various other regions
The movie will be available in both Japanese with English subtitles and an English dub, as well as in IMAX and other premium large formats. This global release strategy underscores the immense popularity of the Demon Slayer franchise, with Crunchyroll’s CEO reportedly stating that the release will be on an “unprecedented scale” worldwide.
The film is directed by Haruo Sotozaki and animated by ufotable, the studio responsible for the acclaimed anime series. Ufotable is also credited with the screenplay. Yuki Kajiura and Go Shiina return to compose the music.
The “Demon Slayer: Kimetsu no Yaiba Infinity Castle” trilogy is poised to deliver a thrilling and emotional conclusion to Tanjiro’s journey, with the powerful musical contributions of Aimer and LiSA setting the perfect tone for the battles to come.
