Demon Slayer: Kimetsu no Yaiba – The Movie: Infinity Castle

After recovering from Kagaya Ubuyashiki's trap and subduing Tamayo, Muzan Kibutsuji retreats into his dimensional stronghold, the Infinity Castle, and traps the Demon Slayer Corps inside. The Demon Slayers are separated and face hordes of Lower Rank-level demons as they search for Muzan and Tamayo. Kagaya's son, Kiriya, and daughters, Kuina and Kanata, lead the operation by mapping the Infinity Castle with the Kasugai crows and locating its inhabitants, with former Hashiras Tengen Uzui and Shinjuro Rengoku standing guard. Shinobu Kocho encounters Upper Rank Two Doma, recognizing him as her sister Kanae's killer. Despite her use of poisons, Doma develops immunity to her attacks, ultimately killing and consuming her. Shinobu's adoptive younger sister Kanao Tsuyuri arrives too late to save her and takes her place in the battle against Doma, while the Kasugai crows announce Shinobu's death to the rest of the Demon Slayers. Zenitsu Agatsuma faces his former senior Kaigaku, who became the new Upper Rank Six after an encounter with Upper Rank One Kokushibo. Angered by Kaigaku's lack of guilt over his betrayal, which led to their master Jigoro committing seppuku, they battle. Kaigaku voices his frustration at being compared to Zenitsu, but is killed when he uses a self-taught Thunder Breathing form. Zenitsu passes out and momentarily enters the afterlife, where Jigoro reaffirms he has always been proud of him; he is then rescued by a disguised Yushiro, who has been using his Blood Demon Art to help the Ubuyashikis map the Infinity Castle. Meanwhile, Nezuko Kamado takes a drug produced by Shinobu and Tamayo to restore her humanity and is placed under the care of Sakonji Urokodaki. Tanjiro Kamado and Giyu Tomioka fight Upper Rank Three Akaza. Though Giyu unlocks his mark to enhance his power, Akaza continues to overwhelm them. Determining that the demon is able to target people based on their willpower, Tanjiro recalls memories of Inosuke's ability to detect attacks and observing his late father in combat. He enters the Transparent World and Selfless State, giving him heightened perception and masking his emotions, successfully beheading Akaza. However, Akaza's body continues to resist and fight Tanjiro and Giyu while headless, pushing them to the brink. Their persistence causes Akaza to remember his tragic past; he was a young criminal named Hakuji, who stole to fund his father's medication. After being caught stealing numerous times, his father committed suicide to unburden him, leading to a chance encounter with a dojo owner, Keizo. Hakuji served as his sole disciple while caring for his sick daughter, Koyuki. Hakuji and Koyuki eventually became engaged, but she and her father were poisoned by a resentful neighboring dojo that wanted his land while he visited his father's grave. The vengeful Hakuji massacred all of the dojo's members and was turned into a demon during an encounter with Muzan afterwards. Despite regenerating his head out of sheer will, Akaza realizes his mistakes through his restored memories. Giving a final smile of gratitude to Tanjiro, he fatally injures himself and stops his regeneration, accepting defeat. He reconciles with his loved ones and reunites with Koyuki, who embraces him before accompanying him to Hell. Tanjiro and Giyu pass out from exhaustion as their victory is announced by the Kasugai crows. Kokushibo and Doma are disappointed by Akaza's death, while the Infinity Castle's owner, Upper Rank Four Nakime, manipulates its layout to confuse the Ubuyashikis. Muzan traps Tamayo in a cocoon of his flesh, remaining confident of his victory over the Demon Slayers. == Voice cast ==

The following are the voice cast in billed order. == Production ==

During the theatrical release of Demon Slayer: Kimetsu no Yaiba – The Movie: Mugen Train, Atsuhiro Iwakami, President and executive director of Aniplex, said that Hikaru Kondo, President and Producer of Ufotable, talked to him about the idea of producing an adaptation for the Infinity Castle arch in the form of a theatrical trilogy. It begins with the idea of being confidential. After that, it was officially approved by the production committee consisting of Aniplex (theatrical distribution rights owner), Shueisha (owner of the manga rights), and Ufotable (responsible for crafting the animation), and preliminary preparations were made before entering this production in the form of sharing with some anime staff. The first installment of the trilogy had a production period of three and a half years, beginning in early 2022 while the Entertainment District Arc was still airing. == Music ==

Yuki Kajiura and Go Shiina composed the film's music, after previously doing so in the anime series and the previous three films. The film's theme songs were performed by Aimer, and performed by LiSA. == Release ==

Theatrical The first film was released by Aniplex and Toho on July 18, 2025. Sony Pictures Releasing International distributed the film in international markets under Crunchyroll. It was released in the following countries: • August 8: Taiwan • August 12: Thailand • August 14: Hong Kong, Malaysia, Pakistan, Singapore, Laos • August 15: Cambodia, Indonesia, Vietnam • August 20: Philippines • August 22: South Korea • September 11: Argentina, Armenia, Australia, Azerbaijan, Bahrain, Bolivia, Brazil, the Caribbean (Jamaica, Aruba, Suriname, Trinidad & Tobago, Curaçao), Central America, Chile, Colombia, Croatia, Czech Republic, Denmark, Dominican Republic, Ecuador, Egypt, Ethiopia, Georgia, Greece, Hungary, Iceland, Iraq, Israel, Italy, Jordan, Kazakhstan, Kuwait, Lebanon, Lithuania, Mexico, Netherlands, New Zealand, North Macedonia, Oman, Paraguay, Peru, Portugal, Qatar, Saudi Arabia, Serbia, Slovakia, Slovenia, Switzerland (Italian-speaking), Syria, Ukraine, United Arab Emirates, Uruguay, Venezuela • September 12: Bulgaria, Canada, Estonia, Finland, India, Ireland, Kenya, Latvia, Mongolia, Nigeria, Norway, Poland, Romania, Southern Africa, Spain, Sweden, Turkey, United Kingdom, United States • September 16: Bangladesh • September 17: Belgium, France, French-speaking Africa, Luxembourg, Switzerland (French-speaking) • September 18: Austria, Germany, Moldova, Switzerland (German-speaking) • November 14: China In Japan, it was distributed in 443 theaters on its release date. Throughout the first quarter of 2026, the film was announced to be re-released in various countries, starting with screenings in IMAX's 1:43:1 aspect ratio, ScreenX's 270-degree aspect ratio, and Ultra 4DX in Japan on February 6, alongside a "Breathing Enhanced Version" of the film's 4DX experience that was announced for February 20. The IMAX showings marked the first time an anime film was released in this aspect ratio. Marketing Ufotable, in collaboration with Major League Baseball, released a short film to promote the first film and the series as well as the upcoming opening game of the 2025 season between the Los Angeles Dodgers and the Chicago Cubs at the Tokyo Dome on March 18. The film, featuring Hōchū Ōtsuka as the voice of , one of the series' characters, narrates the history of baseball and the series. Toho also released an edited version of the whole series on April 4, 2025, in Japanese theatres. The first film's official main trailer was released on June 28, 2025, at an event broadcast on Fuji TV in Japan. The trailer registered more than 40 million views within 24 hours on official social media platforms. == Reception ==

Box office The film debuted with strong box office success, setting multiple records nationwide. On its opening day, it earned ¥1.64 billion (US$11.11 million) with 1.15 million admissions, marking the highest opening day gross in Japanese box office history. On the second day, it grossed ¥1.84 billion (US$12.47 million) from 1.26 million admissions. On the third day, it earned ¥2.03 billion (US$13.76 million) from 1.42 million admissions, setting a new record for the highest single-day box office revenue in Japan. The three-day total reached ¥5.52 billion (US$37.42 million) from 3.84 million admissions, making it the biggest opening weekend of all time in Japanese cinema. On its fourth day, a public holiday, the film earned ¥1.79 billion (US$12.13 million) from 1.32 million admissions, bringing its four-day total to ¥7.31 billion (US$49.55 million) with 5.16 million tickets sold, making it the second-highest-grossing film of 2025 in Japan behind Detective Conan: One-eyed Flashback. Within eight days of release, the film earned over 10 billion yen (approximately $71.0 million), sold 7.5 million tickets, and became the fastest film in Japan to reach that milestone (valued at around $67.6 million at the time), breaking the previous record set by Demon Slayer: Kimetsu no Yaiba – The Movie: Mugen Train. The film grossed $70 million in its U.S. opening weekend, setting the record for the biggest opening weekend for an international film in the U.S. as well as the biggest opening for an R-rated animated film. It was projected to earn $17.3 million at the box office in the final weekend of September. It debuted in first place with US$49.9 million at China's box office, and concluded with US$96 million. Critical response The film received a strong reception from Japanese audiences, topping Filmarks' first-day satisfaction ranking with an average score of 4.36 out of 5, based on 8,114 user reviews. Matt Schley of The Japan Times offered a mixed assessment, commending the animation and faithful adaptation of the manga but criticizing the extended runtime and lack of narrative closure. Accolades == Notes ==