Nerd Reactor had the chance to chat with the voice actors from the new film. Check out the red carpet interview video below.

About Demon Slayer: Infinity Castle

The film is directed by Haruo Sotozaki from an original story by Koyoharu Gotoge (Jump Comics / Shueisha). The screenplay and animation is by ufotable.

Synopsis: Tanjiro Kamado – a boy who joined an organization dedicated to hunting down demons called the Demon Slayer Corps after his younger sister Nezuko was turned into a demon.

While growing stronger and deepening his friendships and bonds with fellow corps members, Tanjiro has battled many demons with his comrades – Zenitsu Agatsuma and Inosuke Hashibira. Along the way, his journey has led him to fight alongside the Demon Slayer Corps’ highest-ranking swordsmen, the Hashira, including Flame Hashira Kyojuro Rengoku aboard the Mugen Train, Sound Hashira Tengen Uzui within the Entertainment District, as well as Mist Hashira Muichiro Tokito and Love Hashira Mitsuri Kanroji at the Swordsmith Village.

As the Demon Slayer Corps members and Hashira engaged in a group strength training program, the Hashira Training, in preparation for the forthcoming battle against the demons, Muzan Kibutsuji appears at the Ubuyashiki Mansion. With the head of the Demon Corps in danger, Tanjiro and the Hashira rush to the headquarters but are plunged into a deep descent to a mysterious space by the hands of Muzan Kibutsuji.

The destination of where Tanjiro and Demon Slayer Corps have fallen is the demons’ stronghold – the Infinity Castle. And so, the battleground is set as the final battle between the Demon Slayer Corps and the demons ignites.

Demon Slayer: Infinity Castle Part 1 is now available in theaters.

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From the opening moments, Infinity Castle establishes a tone of unrelenting tension. The first major fight wastes no time in thrusting the audience into the action. The heroes we’ve followed for years are suddenly vulnerable in ways that make every clash feel like it could be their last. That immediate sense of dread and adrenaline ensures the film starts on a high and sets the tone for the rest of the film.

Man, oh man, and what action it is. Ufotable once again delivers jaw-dropping cinematic animation with Infinity Castle. Each battle is a feast for the eyes and reminds us why Demon Slayer consistently raises the bar for fight animation.

Demon Slayer: Kimetsu No Yaiba Infinity Castle dazzles with top-tier action and heartfelt moments, though flashbacks disrupt pacing in this epic final arc.

Yet for all the spectacle, Infinity Castle sometimes gets bogged down by its pacing. The film frequently pauses for lengthy flashbacks that explore the histories of the ranked demons. On their own, these sequences are powerful — often tragic stories that reframe these monstrous figures as once-human beings consumed by despair. They succeed at evoking empathy and will absolutely hit viewers in the feels. However, their placement in the middle of heated fights causes momentum to stall. Instead of feeling like a singular, flowing movie, Infinity Castle at times plays more like a stitched-together set of anime episodes. The rhythm becomes uneven and undercuts the urgency of the life-or-death battles.

That said, these flashbacks do serve their purpose: They provide emotional depth and complexity to these seemingly irredeemable villains. While the interruptions may frustrate viewers looking for non-stop action, they’re in keeping with Demon Slayer‘s trademark spectacle and sentiment.

Overall, Demon Slayer: Kimetsu No Yaiba Infinity Castle is a fitting beginning to the end. Its explosive fights, gorgeous visuals, and emotional beats capture everything that has made Demon Slayer a phenomenon. While its structure may feel uneven, the sheer scale and intensity of what unfolds more than makes up for the missteps. Fans have waited years for this arc to hit the screen. While it may not be perfect, it delivers an unforgettable ride that makes the final descent into Muzan’s lair feel every bit as epic as it should.

Rating: 4/5 atoms

Demon Slayer: Kimetsu no Yaiba Infinity Castle hits theaters on September 12th.

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From Manga Lines to Moving Frames

Kicking off the panel, Sotozaki revealed how meticulous the process was in translating the manga to the screen. “I paid very close attention to the lines, the thickness of the lines. I wanted to make sure that information was preserved when we adapted the manga to the anime,” he said.

That painstaking attention to detail also extended to the show’s signature elemental techniques. “The water breathing technique, we drew inspiration from ancient Japanese ukiyo-e style artwork,” Sotozaki explained. “We first made the waves using 3D models, but then we had to translate that and add some 2D key frames on top of it to ultimately land on the type of visual expression you see.”

Yuichi Terao broke down his essential role as director of photography, likening himself to a visual assembler. “We get all these different materials from different team members—character animation, the background, the effects—and they’ll all land on my desk. I take all of these different elements and then compile them into a single shot,” he said.

Of course, that pursuit of visual beauty comes with its own hurdles. “We’re going for the most epic and gorgeous anime you can get,” says Terao. “Nevertheless, when you try to make the imagery too gorgeous… some of the original lines that the animators had drawn get kind of blended into the background, and they don’t stand out. And then that’s when Sotozaki-san and [Akira] Matsushima-san, our chief animation director, came to my desk and said, ‘Hey, where did all of our lines go? We can’t see them.’” Sotozaki chimed in with a deadpan response: “Yes.”

A Battle for the Ages

A new key visual featuring Tanjiro and Giyu squaring off against Akaza premiered during the panel, too. Sotozaki shared, “We drew a lot of inspiration from the movie itself to come up with the composition.” As for what that image might be teasing, Tanjiro’s voice actor Natsuki Hanae played coy: “I can’t really tell you what’s gonna happen in the movie, but perhaps that visual gave us a few hints, you know, maybe Tanjiro is gonna go up against Akaza. I know in Mugen Train, Tanjiro couldn’t do anything, so it’s gonna be a spectacle to see how much Tanjiro has grown since the last film.”

Aleks Le, the English voice of Zenitsu, teased an emotional evolution for his character. “He’s very extreme on all ends… but something that we haven’t seen yet is his more vulnerable side, and I feel that this film is gonna bring out a whole new version of him that nobody’s prepared for.”

If this panel was any indication, Demon Slayer: Kimetsu no Yaiba Infinity Castle isn’t just raising the stakes—it’s redefining what anime finales can be.

Demon Slayer: Kimetsu no Yaiba Infinity Castle hits U.S. theaters on September 12th.

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Lines started to grow early in the day as brave costumed cosplayers and noncosplayers alike braved the morning heat on a cloudless day to get into Peacock Theater. The capacity was expected to be high, but despite that, the queue to get in was well organized.

Once attendees were all seated, the musicians took their places and performed a series of themes from Demon Slayer’s first season, followed by a medley of themes from Demon Slayer: Mugen Train and finally the soundtrack for a preview of Demon Slayer: Infinity Castle.

During the program, voice actor Natsuki Hanae (Tanjio Kamado) came out to do some line readings for a couple of iconic moments in Season 1.

As a surprise, he was later joined by English voice actor Aleks Le (Zenitsu Agatsuma) for a scene in which Tanjiro restrains a dramatically lonely and insecure Zenitsu from bothering a young woman. The wild banter between the voice actors due to the alternation of two different languages elicited loud laughs from the audience and was undoubtedly one of the highlights of the performance.

Overall, the event was a great gift to participating Demon Slayer fans that simultaneously paid tribute to the series’ best moments while adding fuel to the anticipatory excitement surrounding Infinity Castle.

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A Cinematic Conclusion to the Demon Slayer Saga

Following the events of the Swordsmith Village arc, the Infinity Castle storyline kicks off when Muzan Kibutsuji makes his move against the Demon Slayer Corps. As Tanjiro Kamado and the mighty Hashira ambush Muzan, Tanjiro and his allies—including Zenitsu, Inosuke, Kanao, and Genya—are suddenly pulled into Muzan’s terrifying domain, the Infinity Castle.

The Infinity Castle movie trilogy will be the grand finale of the beloved Demon Slayer: Kimetsu no Yaiba anime series. Based on Koyoharu Gotouge’s best-selling manga, the films will bring fans the final battle between the Demon Slayer Corps and the mighty demon lord, Muzan Kibutsuji, to the largest screens.

The trilogy’s first installment will also be available in IMAX and other premium large formats. Audiences can enjoy the movie in Japanese with English subtitles and English dubbed versions.

Global Release Dates

Anime enthusiasts worldwide won’t have to wait too long, as the film will debut across different regions before its North American release:

• August 14: Malaysia, Singapore, Pakistan
• August 15: Cambodia, Indonesia, Vietnam
• August 20: Philippines
• September 11: Latin America, the Caribbean, Australia, New Zealand, and several European, Middle Eastern, and African countries
• September 12: India, Spain, United Kingdom, and more
• September 17-25: France, Germany, Switzerland, Belgium, Austria, and additional regions

(More international release dates will be announced later.)

Mark your calendars and get ready to witness one of the most epic showdowns in anime history as Demon Slayer: Infinity Castle hits North American shores on September 12.

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