(Imagine Rui and nezuko switched places. Thats basically what this is. So your a demon slayer and rui is a demon but he doesnt attack anyone. So your tanjiro in this situation except your not actually him. All the hashiras are trying to figure out what to do with Rui. Sanemi cut a bit of his arm and held it right next to Rui to see if he would attack him or not and Obani was holding you down so you couldn't stop him)