Strange And Dangerous World

Demon Slayer x Child!Male!Reader

Y/N's big sister Erica has been talking about an anime called 'Demon Slayer' for about an week and half now. It was slowly getting on small Y/N's nerves when his 2 years older sister did nothing else than ramble about an anime that Y/N was not even interested about! Sure Y/N studies Japanese at school, but it doesn't mean that he's interested in those Japanse cartoons like his annoying big sister! However, everything takes a turn when he actually ends up in the anime! Oh how he wishes he would've listened his big sister's rambles now that he's in that dangerous show himself...
AND WHY IS THE MAIN CHARACTER AND HIS SISTER SO PROTECTIVE OF YOU WHEN YOU AREN'T EVEN FAMILY?!?!