Demon Slayer: Infinity Castle – Part 1 marks the beginning of the series’ epic finale, featuring intense battles against Upper Rank demons inside Muzan’s twisted castle. With stunning animation, emotional sacrifices, and shocking deaths, the film pushes Tanjiro and the Hashira to their limits in a dark, high-stakes showdown. 

Final Trilogy Debut 

This is the first of a three-part cinematic adaptation of the Infinity Castle and Sunrise Countdown arcs, marking the grand finale of the series 

Japanese Premiere 

Part 1 debuted in Japan on July 18, 2025, directed by Haruo Sotozaki and produced by Ufotable 

Global Release Rollout 

International releases include: – India & North America: September 12, 2025 – Other regions: August to September (e.g., Southeast Asia in mid‑August) 

Language Options 

Available in Japanese with subtitles, and dubbed in English and Hindi (India) across IMAX, 4DX, and premium formats 

Box Office Break Records 

In Japan, it recorded highest-ever opening weekend earnings—¥7.3 billion ($49m) in four days—and over $40 million grossed in first weekend The Indian Express+2 

Smashing Mugen Train 

Its opening is rivaling the record set by Mugen Train (2020), which had earned over $500 million worldwide 

Trailer Goes Viral 

The official trailer released on June 28, 2025, garnered over 40 million views within 24 hours; leaks of a sneak-peek earlier stirred controversy and a studio crackdown 

New Soundtracks 

Features two original theme songs—“A World Where the Sun Never Rises” by Aimer and “Shine in the Cruel Night” by LiSA—dropping July 18 alongside the trailer  

Key Visual & Showdowns 

A newly released visual highlights Tanjiro and Giyu fighting Akaza inside the surreal, ever-shifting Infinity Castle 

Pivotal Battles & Sacrifices 

The plot spotlights Muichiro Tokito’s high-stakes duel with Upper Rank One demon Kokushibo, culminating in Muichiro’s tragic sacrifice and leading toward the ultimate clash with Muzan Kibutsuji