For PC users, there are several curated themes that include wallpapers and UI changes.
: A verified "Demon Slayer Infinity Castle" pack, which includes a 1.99 MB zip file containing 10 high-quality wallpapers, was released on the Realme Community . Download Demon Slayer Theme zip
While there isn't one single "official" article, several high-quality resources provide theme packs and setup guides for various devices as of April 2026. 1. Windows Desktop Themes For PC users, there are several curated themes
If you want to theme your web browser, use official extension stores for the safest experience. Demon Slayer Windows Theme - DeviantArt Another "aesthetic" version for Windows 10 is available
: One of the most popular community-created themes is available from ThematicMarket on DeviantArt , which offers a dedicated Windows theme. Another "aesthetic" version for Windows 10 is available from kiyoshinotebook on DeviantArt .
: Custom app icons can be found on sites like Wallpapers Clan or via the WidgetClub app , which offers specific "demonslayer" icon packs.
You can find zip files and apps to overhaul your phone's look with custom icons and widgets.
