Poor Boy [Tanjiro x Reader]

Centuries ago a hashira believed the only way to cleanse the world of the demon menace was to harness their abilities, he began experimenting with demon blood the mystery of how he succeeded still remains unknown,

for generations the demon blood has tainted the (L/N) bloodline a curse that remained a family secret until tragedy struck the Kamado house, it was then our protagonist learned that the demon blood coursed through her veins,

Now this noble woman turned demon slayer must learn to harness her demonic abilities all the while clinging to her humanity, can Tanjiro her childhood best friend help his first and only love succeed and still save his sister?