The wait is finally over for Demon Slayer fans! As the premiere of the Demon Slayer Infinity Castle movie races closer—slated for September 12, 2025—anticipation is at an all-time high for the epic next chapter of kimetsu no yaiba. At Popal.io, we’re joining the buzz with our exclusive brick toy set, launching just as fan theories about the Infinity Castle arc, surprise deaths, and the fate of Tanjiro and Nezuko dominate the internet.
Infinity Castle Release, Trailer Clues & Viral Fan Theories
The demon slayer infinity castle movie release date—the must-stream event for devoted fans and newcomers alike. The new movie trailer unleashed a wave of speculation, with online communities dissecting every detail:
- Will Tanjiro turn into the new Demon King? Fans are split on Tanjiro’s demonic side, teased in both the manga and trailer. Some claim he was Muzan’s chosen heir, sparking “What if Tanjiro replaces Muzan?” debates across TikTok and Reddit.
- Nezuko: Savior or Sacrifice? The internet is swirling with predictions—will Nezuko’s unique demon-human state tip the scales against Muzan, or end in heartbreak?
- Who survives Infinity Castle? A trending theory links animation colors in the trailer to which characters survive—do yellow backgrounds mean safety? It’s ignited discussion among demon slayer anime fans.
- Destiny and those iconic sun earrings: Some speculate Tanjiro’s earrings marked his family for tragedy, adding another layer to the demon slayer kimetsu no yaiba mythos.
The Demon Slayer Figures You Need
Popal Demon Slayer Toy Set - Tanjiro & Nezuko Collectible Duo

Popal’s Tanjiro & Nezuko brick toy set brings the ultimate Demon Slayer sibling duo right to your collection, designed to capture their iconic bond. Collectors and fans get the full story in one box—perfect for recreating unforgettable scenes or displaying together as a powerful pair.
Tanjiro Kamado Figure



Nezuko Kamado Figure



Why Anime Fans Rave About Our Demon Slayer Toys
Collectors and fans love how our designs capture every Demon Slayer detail—perfect for theory recreations, display dioramas, or unique mashups with other Popal.io anime sets.
Secure your Demon Slayer Infinity Castle brick toy set today at Popal.io—before the Demon Slayer movie release date!
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