The wait is finally over—Demon Slayer: Kimetsu no Yaiba – The Movie: Infinity Castle – Part 1 premieres in Japan today, July 18, 2025, marking the beginning of the long-awaited final arc of the global anime phenomenon. Released across 443 theaters in Japan, including IMAX and premium formats, this film kicks off the climactic battle between the Demon Slayer Corps and Muzan Kibutsuji’s most powerful demons.
Indian fans can mark their calendars—the movie will release across India on September 12, bringing the long-anticipated Infinity Castle arc to local big screens.
The Trailer That Set the Internet on Fire
The official trailer, released back in May, gave fans their first look at the dark, surreal design of the Infinity Castle, and teased the return of Akaza, one of the series’ most iconic antagonists. Within hours, the trailer trended globally, racking up millions of views and fueling months of speculation, theory breakdowns, and frame-by-frame analysis on fan forums.
From the haunting soundtrack to the blink-and-you’ll-miss-it glimpses of Hashira in peril, the trailer was more than a preview—it was a promise of high-stakes storytelling and ufotable’s signature cinematic animation.
Fans Are Hyped for Zenitsu’s Return
While all eyes are on the final battle, one particular character has the fanbase buzzing: Zenitsu Agatsuma.
Known for his anxious energy and sudden bursts of god-like speed, Zenitsu appears in the trailer looking shockingly calm and focused—a major tonal shift for the character. His brief appearance—walking alone through the castle—set social media ablaze, with hashtags like #ZenitsuComeback and #ThunderBreathing trending within hours.
Fans familiar with the manga know that Zenitsu has one of the most emotionally charged moments in the Infinity Castle arc. His upcoming confrontation is not just a battle—it’s a personal reckoning, and one of the most defining scenes of his entire journey. This is the Zenitsu arc fans have been waiting for.
What to Expect in Infinity Castle – Part 1
The film picks up right after the Hashira Training Arc, with the Demon Slayer Corps being pulled into the Infinity Castle—a warping, reality-bending stronghold controlled by Muzan’s forces. At the center of this opening chapter is the brutal return of Akaza, as Tanjiro and the Hashira brace for the bloodshed ahead.
This is the beginning of the final confrontation, with everything—friendships, lives, and legacies—on the line.
Quick Recap – Where We Left Off
Following intense training to strengthen their ranks, the Demon Slayers were caught off guard when Nakime, the Biwa demon, activated the Infinity Castle. Nezuko’s ability to withstand sunlight had tilted the war in their favor—but Muzan’s next move has changed everything. The castle becomes the battlefield, and there’s no way out.
Why This Release Matters
- The Infinity Castle arc is one of the most beloved and intense arcs in the manga.
- Animated by ufotable, it promises next-level visuals and devastating emotional beats.
- This film is the first of a three-part theatrical finale, ending the Demon Slayer anime saga on the biggest possible stage.
Release Schedule
- Japan: Premieres today – July 18, 2025
- India: Official release – September 12, 2025
Demon Slayer: Infinity Castle – Part 1 marks the beginning of the end—and if the trailer and early buzz are anything to go by, this arc will be nothing short of legendary. For Japanese fans, the moment has arrived. For the rest of the world, the countdown to September is on.
Let the battle begin.