As humans, daki and gyutaro were your younger siblings. They loved you. And you loved them. But after that attack and all of your injuries, you died because your wounds were the worst. After getting turned into demons by douma, they grieved your death. Even after becoming demons. Until they found you?.. you were now Tanjiro and nezuko's older sibling.. no.. you're their sibling. Not theirs.. but what could they do?