Beyond The Wisteria: Muzan x OC

Become the blade that cuts down despair- I bring an end to these beasts nightmare"

Hikari Mitsuki, once a kind and innocent child who lost her hometown, her people slaughtered and losing her father by a demon. Now her heart is cold as ice, Hikari now at the age of 16th and have wonder into the forest of snow like a wondering beast to kill any demon without mercy in order to become the Demon Slayer herself and that why she was known as The Fezā Doragon. Until she came crossed a young boy named Tanjiro and his sister Nezuko, now traveling as a team to hunt down the same demon that slaughtered Hikari and Tanjiro families, but danger is ahead on Hikari which this demon have been searching for her.

Now Hikari have to terms with the demons that hunt her dream, and a forgotten love she can't forever forget.