Rengoku x Reader x Sukuna PAUSED

Jujutsu Kaisen characters in the universe of Demon Slayer.
I'm going to make the impossible.

Muzan, will find himself in quiet a pickle with a Demon Slayer being in the tempting possession of a special grade cursed spirit.

If that wouldn't be enough a sorcerer killer Toji Fushiguro, Gojo have infiltrated this time along with others. Only to find an infestation of demons and to later on learn of a Demon being a greater threat than Sukuna.

And in between all of this is y/n. A Demon Slayer happened to accidentally eat a cursed object, that object being a finger that once belonged to a Demon of 2 faces and 4 arms Sukuna.

I will be focusing a lot on Rengoku family.