Actually the reports going around say Netflix is considering going with a fully Asian cast for the live action, as a response to all the whitewashing discourse in Hollywood lately.
Still, this edit of Tom Holland's face combined with Tanjiro's iconic green and black checkered haori is messing with people because the resemblance actually kind of works from certain angles.
Demon Slayer itself is one of the biggest anime globally, with Tanjiro's whole journey to save his sister Nezuko being the emotional core of the story.
Debates over who should play these characters in live action always get intense in the anime fandom, and this is just the latest example.