Tanjiro is a demon au

you are with nezuko (spider forest) nezuko was about to get hit when tanjiro got in front of her and got hit nezuko grabbed tanjiro hiding behind a tree trying to calm down tanjiro knowing he's a demon he is weak right now

Rui: girl.. I've never seen siblings love like that sacrificing himself for you.. Let me make a deal you give me your brother you leave no harm..

Nez yells

Nez: NEVER!