Talk:Daki/@comment-2168633-20191016132646/@comment-38964308-20191018082614

In her human life, she was on the verge of death after being burned alive by the samurai until Douma "save" her.

The demon blood could actually fix almost all disabilities like for Rui (he acquired a strong body)and have high regeneration abilities

Actually their abilities is likely a reference to the strong and unbreakable siblings bonds,that's why they are always together,just like the abilities of Douma is a reference to his cold and non-existent emotions.

And when they were defeated their head were simulaneously cut off, the brother by Tanjirou (with the back-up of Uzui Tengen) and the sister by Zenitsu and Inosuke, after that Tanjirou deceive both by making himself a decoy.