Aimer and LiSA Release Official Theme Songs for Demon Slayer: Infinity Castle Movie

Aimer and LiSA Release Theme Songs for Demon Slayer: Kimetsu no Yaiba – Infinity Castle

Following the record-breaking Japanese box office debut of Demon Slayer: Kimetsu no Yaiba – Infinity Castle, music videos for the movie’s two official theme songs have been released by artists Aimer and LiSA on their respective YouTube channels. The CD singles for both tracks were also made available in Japan on July 23, 2025.

Aimer Performs “A World Where the Sun Never Rises”

Renowned singer Aimer, who previously contributed the opening and ending theme songs for the Entertainment District Arc, performs “Taiyo ga Noboranai Sekai” (“A World Where the Sun Never Rises”) for the Infinity Castle movie.

The song’s lyrics were written by Hikaru Kondo, general producer of the Demon Slayer anime, while its composition and arrangement were handled by Go Shiina, a key figure in the franchise’s iconic soundtrack.

In a heartfelt message to fans, Aimer shared:

“Go Shiina-san and Hikaru Kondo-san, who have poured their passion into Demon Slayer, entrusted me with this song. I sang it with my own form of ‘Total Concentration,’ reflecting on the characters who channel their sorrow into strength. This song is for those who are still moving forward through a world where the sun has yet to rise.”

Two versions of the CD single are available:

• Regular Edition Jacket: Features minimalist design tied to the film’s core themes.

• Time-Limited Production Edition: Includes exclusive artwork inspired by Infinity Castle scenes.

LiSA Returns with “Shine in the Cruel Night”

Popular anisong performer LiSA, known for her work on Demon Slayer: Mugen Train and the original anime’s first opening, lends her voice to the new track “Zankoku na Yoru ni Kagayake” (“Shine in the Cruel Night”).

This song was written and composed by Yuki Kajiura, one of the anime industry’s most prolific composers and a long-time collaborator on the Demon Slayer series. Kajiura's contributions include not only theme songs but also a substantial portion of the anime’s background scores.

LiSA’s new track delivers the emotional intensity and thematic weight expected from the climactic Infinity Castle arc, blending orchestral and rock elements in a way that mirrors the battles and personal struggles within the film.

Demon Slayer: Infinity Castle – Cultural and Musical Impact

The Infinity Castle arc marks the beginning of the final chapters in the Demon Slayer storyline, with heightened stakes and emotional payoffs that fans have been anticipating for years. The decision to bring back Aimer and LiSA—two of the franchise’s most beloved musical contributors—strengthens the continuity and emotional resonance of the saga.

With direction from studio Ufotable, Infinity Castle delivers both cinematic animation and a soundtrack that deepens the narrative’s impact. The addition of new compositions from Go Shiina and Yuki Kajiura, paired with vocals from Aimer and LiSA, ensures that the music stands as a pivotal part of the storytelling experience.

Where to Watch and Listen

• Music Videos: Both Aimer’s “A World Where the Sun Never Rises” and LiSA’s “Shine in the Cruel Night” are available on their official YouTube channels.

• CD Singles: Now released in Japan and expected to hit international platforms soon, including digital streaming services.

• Demon Slayer: Infinity Castle Movie: Currently in theaters in Japan, with international release dates to be announced.

Final Notes

As Demon Slayer: Kimetsu no Yaiba – Infinity Castle continues to dominate the box office and captivate audiences, the release of its theme songs further amplifies its cultural presence. Both Aimer and LiSA have elevated the emotional tone of the film through their music, setting a new standard for anime film soundtracks in 2025.

Stay tuned for global release updates and full reviews of the film and its soundtrack as the Infinity Castle arc continues to unfold.