The highly anticipated first film in the Demon Slayer: Kimetsu no Yaiba Infinity Castle trilogy has unveiled its latest trailer, confirming the return of beloved musical artists Aimer and LiSA to contribute the theme songs. This announcement has ignited significant excitement among fans, marking a crucial step towards the cinematic adaptation of the manga’s climactic final arc.
A Symphony of Battle: New Theme Songs Revealed
The newly released trailer showcases powerful visuals from the upcoming film and officially reveals the vocal talents set to underscore the epic narrative. Aimer will perform the theme song titled “Taiyō ga Noboranai Sekai,” which translates to “A World Where the Sun Never Rises.” Joining her is LiSA, who will contribute “Zankoku no Yoru ni Kagayake,” meaning “Shine in the Cruel Night.” Both tracks are poised to become immediate fan favorites, building on the artists’ established legacy within the Demon Slayer universe. These new theme songs are scheduled for global streaming release on July 18, 2025, aligning with the film’s theatrical debut in Japan.
The Unmistakable Impact of Aimer and LiSA
The decision to bring back Aimer and LiSA for the Infinity Castle films is a testament to their profound impact on the Demon Slayer franchise’s musical identity. Both artists have previously delivered iconic performances that have become synonymous with key arcs of the anime.
LiSA’s contributions are particularly foundational to the series’ popularity. Her electrifying opening theme, “Gurenge,” for the first season of the TV anime, became a cultural phenomenon, widely credited with boosting the series’ initial widespread appeal. She further solidified her connection to the franchise with “Homura,” the poignant theme song for Demon Slayer: Kimetsu no Yaiba – The Movie: Mugen Train, which became an award-winning sensation and contributed to the film’s record-breaking success. LiSA continued her involvement by performing “Akeboshi” and “Shirogane” for the TV adaptation of the Mugen Train Arc.
Aimer made her memorable debut in the Demon Slayer soundscape with the “Entertainment District Arc,” where she performed both the dynamic opening theme “Zankyosanka” and the evocative ending theme “Asa ga Kuru.” Her unique vocal style and ability to capture the emotional intensity of the series made her an instant favorite, making her return for the Infinity Castle arc a highly anticipated event.
The collaborative return of these two musical powerhouses ensures that the emotional and action-packed sequences of the final saga will be accompanied by a score that resonates deeply with the established tone and high standards of the franchise.
The Dawn of the Final Battle: Infinity Castle Arc Adapted
The first film, officially titled Demon Slayer: Kimetsu no Yaiba Infinity Castle – Akaza Sairai (The Return of Akaza), signifies the beginning of the end for the Demon Slayer Corps’ long struggle against Muzan Kibutsuji and his formidable Upper Rank demons. This cinematic trilogy will directly adapt the “Infinity Castle Arc” from Koyoharu Gotouge’s original manga, encompassing chapters 137-183, and potentially extending into the “Sunrise Countdown Arc” (chapters 184-205) to conclude the series’ narrative.
The story picks up immediately following the events of the “Hashira Training Arc.” As Muzan Kibutsuji launches his decisive assault on the Demon Slayer Corps Headquarters, Tanjiro Kamado and the Hashira are plunged into the terrifying and ever-shifting realm of the Infinity Castle. This dimension-altering stronghold, characterized by its gravity-defying architecture and labyrinthine corridors, serves as the ultimate battleground where the Demon Slayers will confront Muzan’s most powerful subordinates in a series of desperate and climactic confrontations. The trailer’s focus on the return of Akaza, the Upper Rank Three demon responsible for the tragic events of the Mugen Train film, further emphasizes the high stakes and emotional weight of this concluding chapter.
A Global Cinematic Event
The Demon Slayer: Kimetsu no Yaiba Infinity Castle film is set for a massive global release, promising an “unprecedented scale” according to Crunchyroll’s CEO. The first movie will premiere in Japan on July 18, 2025. Following its Japanese debut, it will hit theaters in the United States and Canada on September 12, 2025. The film will be distributed by Crunchyroll, Sony Pictures Entertainment, and Aniplex, aiming for screenings in over 150 countries and regions worldwide, surpassing the previous global reach of the franchise. Audiences will have the option to experience the film in Japanese with English subtitles or with an English dub.
This trilogy represents a significant shift in the anime’s adaptation strategy. Unlike the “Swordsmith Village” and “Hashira Training” arcs, which received compilation film releases, the Infinity Castle saga is being adapted as a full-fledged feature-length film trilogy, similar in scope and production to the highly successful Mugen Train movie. This approach underscores the dramatic intensity and expansive nature of the final battles, requiring the cinematic treatment to do justice to Koyoharu Gotouge’s original work.
The animation studio Ufotable, renowned for its breathtaking visuals and dynamic action sequences throughout the Demon Slayer anime, is once again at the helm. Haruo Sotozaki returns as director, with Akira Matsushima serving as chief animation director and character designer, and Yuki Kajiura and Go Shiina composing the music. This continuity in the creative team ensures the signature visual fidelity and compelling sound design that fans have come to expect from the Demon Slayer anime.
The anticipation for the Infinity Castle films is palpable, with the new trailer alone garnering over 40 million views within 24 hours across social media platforms. As the Demon Slayer saga approaches its dramatic conclusion, the fusion of Ufotable’s unparalleled animation, the gripping narrative of the final arc, and the powerful voices of Aimer and LiSA promises a cinematic experience that will undoubtedly leave an indelible mark on anime history.
