The highly anticipated first film in the Demon Slayer: Kimetsu no Yaiba Infinity Castle trilogy has unveiled its new trailer, confirming that renowned musical artists Aimer and LiSA will contribute theme songs to the cinematic event. This announcement has ignited excitement among fans, marking the return of two voices synonymous with the global phenomenon that is Demon Slayer.
The full title of the first installment is Demon Slayer: Kimetsu no Yaiba Infinity Castle – Akaza Sairai (The Return of Akaza)., The film is set to open in Japan on July 18, 2025, and will begin its international rollout in August, reaching audiences in the United States and Canada on September 12, 2025.,,,
New Melodies for a Climactic Battle
Aimer, celebrated for her distinctive vocals and emotive performances, will perform the theme song titled “Taiyō ga Noboranai Sekai” (“A World Where the Sun Never Rises”). Complementing this, LiSA, a powerhouse vocalist whose songs have become anthems for the franchise, will deliver “Zankoku no Yoru ni Kagayake” (“Shine in the Cruel Night”). Both tracks are scheduled for release on global streaming platforms concurrently with the film’s Japanese premiere on July 18, 2025.
The selection of these two artists underscores the film’s pivotal role as the Demon Slayer saga approaches its epic conclusion. Their previous contributions have not only enhanced the anime’s storytelling but have also achieved significant commercial and critical success, deeply embedding themselves in the hearts of fans worldwide.
The Enduring Legacy of LiSA and Aimer in Demon Slayer
The Demon Slayer franchise’s musical landscape has been profoundly shaped by the artistry of LiSA and Aimer. Their return for the Infinity Castle trilogy is a testament to their indelible impact and the powerful synergy between their music and the series’ narrative.
LiSA: The Voice of the Slayer Corps
LiSA, whose real name is Risa Oribe, has been a foundational pillar of Demon Slayer‘s auditory identity since its inception. Her dynamic rock and pop-punk style has perfectly captured the series’ themes of struggle, resilience, and unwavering resolve.,
Her journey with Demon Slayer began with the iconic opening theme “Gurenge” for the first season of the anime in 2019.,,,, “Gurenge” quickly became a cultural phenomenon, topping charts and becoming the first single by a female artist to surpass one million digital downloads in Oricon’s history., This initial success cemented her as an inseparable part of the franchise. She also collaborated with FictionJunction on the first season’s ending theme, “From the Edge.”,,
LiSA’s contribution deepened with Demon Slayer: Kimetsu no Yaiba – The Movie: Mugen Train (2020), for which she performed the award-winning theme song “Homura.”,,,, “Homura” earned her the prestigious Grand Prix at the 62nd Japan Record Award and became the highest-grossing anime movie in Japanese history. The song’s emotional resonance perfectly complemented the film’s poignant narrative, further solidifying her connection to the series.
She continued her involvement with the anime’s second season, contributing both the opening theme “Akeboshi” and the ending theme “Shirogane” for the Mugen Train Arc’s TV adaptation.,,, Her consistent presence and the profound impact of her songs have made her music almost synonymous with the Demon Slayer experience.,
Aimer: Capturing the Series’ Nuances
Aimer, known for her husky, captivating voice and sophisticated musical arrangements, joined the Demon Slayer musical family with the Entertainment District Arc., Her contributions brought a new layer of intensity and emotional depth to the series’ second season.
She performed the electrifying opening theme “Zankyōsanka” and the equally compelling ending theme “Asa ga Kuru” for Demon Slayer: Kimetsu no Yaiba Entertainment District Arc.,,,, “Zankyōsanka” proved to be a massive success, surpassing 400 million total streams on the Billboard JAPAN chart and becoming Aimer’s first song to reach the top spot overall on Billboard’s Japan chart. Aimer’s ability to “retain the brilliance symbolizing the work” and “empathize with every single character’s struggles and resolve” made her songs a perfect fit for the Entertainment District Arc’s vibrant yet perilous narrative.
Her distinctive style and powerful delivery have solidified her position as a vital contributor to the Demon Slayer soundscape, and her return for the Infinity Castle film promises to evoke similar resonance.
The Infinity Castle Arc: The Final Confrontation Begins
The Demon Slayer: Kimetsu no Yaiba Infinity Castle trilogy marks the adaptation of the manga’s climactic final arc., This arc represents the ultimate showdown between the Demon Slayer Corps and the progenitor of all demons, Muzan Kibutsuji.,,,
Following the events of the Hashira Training Arc, Muzan Kibutsuji makes a decisive move, plunging Tanjiro Kamado and the Hashira into a mysterious, dimension-altering space: the Infinity Castle.,,, This eerie fortress, characterized by its endless wooden rooms, shifting corridors, and warped gravity, serves as the demons’ stronghold and the battleground for the series’ most intense and defining conflicts.,, Inside, the Demon Slayers face off against Muzan’s most powerful subordinates, including the Upper Rank demons such as Akaza, Doma, and Kokushibo., The arc is a desperate struggle for survival and the culmination of Tanjiro’s quest to avenge his family and cure his sister, Nezuko.,,
Directed by Haruo Sotozaki and animated by the critically acclaimed studio ufotable, the film is poised to deliver the visual spectacle and emotional gravitas that fans have come to expect from the franchise.,, ufotable is renowned for its breathtaking animation quality, particularly its stunning depiction of action sequences and intricate character expressions, which are crucial for bringing the complex battles and emotional stakes of the Infinity Castle Arc to life.
A Global Cinematic Event
The decision to adapt the Infinity Castle Arc into a trilogy of feature films, rather than a traditional television season, mirrors the highly successful approach taken with Demon Slayer: Mugen Train, which became the highest-grossing anime film and Japanese film of all time., This cinematic treatment allows for a grander scale, higher production values, and an uninterrupted narrative flow befitting the arc’s significance as the series’ grand finale.
The first film, Demon Slayer: Kimetsu no Yaiba Infinity Castle – Akaza Sairai, specifically highlights the return of Upper Rank Three demon Akaza, promising intense confrontations. Its release strategy, commencing in Japan on July 18, 2025, followed by a widespread international distribution by Crunchyroll and Sony Pictures Entertainment starting in August, underscores the global anticipation for this monumental conclusion.,,, Fans across various regions, including the UK (August 12), Indonesia (August 15), the Philippines (August 20), and North America (September 12), will soon witness the beginning of this climactic battle on the big screen.
The combination of a gripping storyline, ufotable’s unparalleled animation, and the powerful musical contributions from LiSA and Aimer ensures that the Demon Slayer: Kimetsu no Yaiba Infinity Castle film trilogy will be an unforgettable cinematic experience, marking a definitive chapter in the storied history of the Demon Slayer Corps.
