The highly anticipated first film in the Demon Slayer: Kimetsu no Yaiba Infinity Castle trilogy has unveiled its latest trailer, confirming that renowned musical artists Aimer and LiSA will contribute the theme songs. This announcement has sent waves of excitement through the anime community, as both artists have a deep-rooted history of delivering iconic anthems for the Demon Slayer franchise. The film, officially titled Demon Slayer: Kimetsu no Yaiba Infinity Castle – Akaza Sairai (The Return of Akaza), promises to plunge fans deeper into the final, climactic arc of the beloved series.
A Symphony of Shadows and Light: New Theme Songs Revealed
The newly released full trailer, which debuted during a special broadcast of Demon Slayer – Kimetsu no Yaiba – The Movie: Mugen Train on Fuji TV in Japan on June 28, showcased glimpses of the intense battles and emotional depth awaiting viewers in the Infinity Castle. Accompanying these visuals are the powerful new theme songs from two of Japan’s most prominent vocalists.
Aimer will perform “Taiyō ga Noboranai Sekai” (“A World Where the Sun Never Rises”), a title that perfectly encapsulates the desolate and dangerous environment of the Infinity Castle, a dimension where Muzan Kibutsuji’s demons hold sway. Aimer’s distinctive husky voice and emotionally charged delivery are expected to bring a profound sense of gravitas to the film’s narrative.
Complementing this, LiSA will perform “Zankoku no Yoru ni Kagayake” (“Shine in the Cruel Night”). LiSA, often considered the voice of Demon Slayer, is known for her energetic and passionate performances, which have consistently amplified the series’ most thrilling moments. Her new song’s title hints at the resilience and hope that the Demon Slayer Corps must cling to amidst the harsh realities of their final confrontation.
Both theme songs are slated for global streaming release on July 18, coinciding with the film’s Japanese premiere. This dual release strategy allows fans worldwide to immerse themselves in the film’s musical landscape from day one, building anticipation for its international theatrical rollout.
The Legacy of LiSA and Aimer in Demon Slayer
The selection of Aimer and LiSA for the Infinity Castle film’s theme songs is a testament to their indelible impact on the Demon Slayer saga. Their contributions have not merely been musical accompaniment but have become integral to the franchise’s identity, resonating deeply with fans across the globe.
LiSA: The Unofficial Voice of Demon Slayer
LiSA’s association with Demon Slayer dates back to the very beginning, with her electrifying performance of “Gurenge” serving as the opening theme for the first season of the TV anime. The song quickly became a cultural phenomenon, achieving massive commercial success and cementing her status as an anime music icon. She also performed the ending theme, “From the Edge,” for the same season.
Her profound connection to the series deepened with the release of Demon Slayer – Kimetsu no Yaiba – The Movie: Mugen Train. Her theme song for the film, “Homura,” was an emotional ballad that captured the poignant essence of the film’s storyline, earning numerous awards and contributing significantly to the movie’s record-breaking box office success. “Homura” became the highest-grossing anime film and Japanese film of all time, further elevating LiSA’s global profile.
Following the Mugen Train film, LiSA continued to lend her talent to the TV adaptation of the Mugen Train Arc, performing both the opening theme “Akeboshi” and the ending theme “Shirogane.” Her consistent delivery of high-quality, emotionally resonant songs has made her an indispensable part of the Demon Slayer experience.
Aimer: A Powerful New Chapter
Aimer made her grand entrance into the Demon Slayer musical landscape with the Entertainment District Arc. She delivered both the opening theme, “Zankyou Sanka” (“Resonance”), and the ending theme, “Asa ga Kuru” (“Morning Comes”). “Zankyou Sanka” was another monumental hit, topping charts and showcasing Aimer’s incredible vocal range and ability to convey intense emotion. The song’s massive popularity worldwide underscored her immediate impact on the franchise.
Her distinctive vocal style, often characterized by its powerful yet ethereal quality, provided a fresh and captivating sound for the action-packed Entertainment District Arc. Her previous works across various anime, including Fate/stay night and Vinland Saga, have established her as a versatile and highly respected artist in the Japanese music industry. The return of both LiSA and Aimer for the Infinity Castle film signifies a strategic move by the production committee to leverage their proven track record of creating memorable and impactful music for the series.
The Infinity Castle Arc: A Climactic Adaptation
The Infinity Castle arc marks the beginning of the final and most critical phase of the Demon Slayer: Kimetsu no Yaiba narrative. Unlike previous arcs that received a mix of TV and film adaptations, the Infinity Castle saga is being brought to the big screen as a three-part feature film trilogy. This decision reflects the arc’s immense scope, its dramatic pacing, and the sheer volume of pivotal confrontations it contains.
The arc sees the Demon Slayer Corps plunged into Muzan Kibutsuji’s distorted dimension, the Infinity Castle, where the ultimate battle against the Upper Rank demons and Muzan himself will unfold. Tanjiro Kamado and his allies, including the Hashira, face their most formidable challenges yet, with the fate of humanity hanging in the balance. The first film, Akaza Sairai (The Return of Akaza), hints at a significant focus on the powerful Upper Rank Three demon, Akaza, a character whose past encounters with the Demon Slayer Corps have been particularly devastating.
The animation studio ufotable, renowned for its breathtaking animation quality and dynamic action sequences, is once again at the helm, with Haruo Sotozaki directing and also credited for the screenplay. Fans can anticipate the same meticulous attention to detail and visually stunning spectacle that has become a hallmark of the Demon Slayer anime. The film’s trailer itself registered over 40 million views within 24 hours on official social media platforms, underscoring the immense global anticipation for this cinematic event.
Global Release and Anticipation
The first Demon Slayer: Kimetsu no Yaiba Infinity Castle film is set to open in Japan on July 18, 2025, playing on a franchise-record 443 screens, including IMAX screenings. Following its Japanese debut, the film will embark on an extensive international theatrical release, distributed by Crunchyroll and Sony Pictures Entertainment in various territories.
The international release schedule is as follows:
- August 12: Thailand
- August 14: Hong Kong, Malaysia, Pakistan, Singapore
- August 15: Cambodia, Indonesia, Vietnam
- August 20: Philippines
- September 11: Mexico, Chile, Peru, Argentina, Bolivia, Brazil, Caribbean (Jamaica, Aruba, Suriname, Trinidad & Tobago, Curacao), Central America, Colombia, Dominican Republic, Ecuador, Paraguay, Uruguay, Venezuela, Australia, New Zealand, 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
- September 12: United States, Canada, India, Mongolia, Spain, Bulgaria, Estonia, Finland, Kenya, Latvia, Nigeria, Norway, Poland, Romania, Southern Africa, Sweden, Turkey, United Kingdom
- September 17: Belgium, France, French-speaking Africa, Luxembourg, Switzerland (French-speaking)
- September 18: Austria, Germany, Moldova, Switzerland (German-speaking)
The relatively short gap between the Japanese and international releases, particularly for North America (approximately two months), is a positive development for fans eager to experience the conclusion of Tanjiro’s journey on the big screen. This global rollout underscores the massive commercial and cultural impact of Demon Slayer, a series that has captivated audiences worldwide with its blend of tragic storytelling, thrilling sword fights, compelling characters, and comedic relief.
The Infinity Castle trilogy represents the culmination of years of meticulous animation and storytelling, promising to deliver an unforgettable cinematic experience. With the powerful voices of Aimer and LiSA guiding its emotional and action-packed narrative, the first Demon Slayer: Kimetsu no Yaiba Infinity Castle film is poised to be one of the most significant anime events of the year.
