The castle was originally the domain of a powerful demon who predated even Muzan’s current Upper Moon ranks. During the Heian era, Muzan discovered the demon Nakime—a woman who played the biwa (a Japanese lute). Muzan turned her into a demon, and her Blood Demon Art evolved into the ability to create and warp the . By plucking her biwa strings, Nakime can teleport anyone into the castle, rearrange its geography instantly, or trap victims in endless loops.
Given that Mugen Train (a film set on a train) remains the highest-grossing Japanese film of all time, an Infinity Castle trilogy will likely dominate the global box office for the next two years. Demon Slayer- Kimetsu no Yaiba - Infinity Castle
While early reports suggested a 2027 and 2029 release for Parts 2 and 3, IMDb and IGN have noted that these dates are not yet set in stone by official sources. The Story: Descent into the Stronghold The castle was originally the domain of a
: It opened in North America on September 12, 2025 , with a record-breaking $70.6 million debut weekend—the biggest domestic opening ever for an anime film. By plucking her biwa strings, Nakime can teleport
The announcement that the is being adapted as a theatrical trilogy (rather than a TV season) is a massive deal. Here is why: