What happens when your sweet, doting boyfriend becomes the King of Curses himself?

Scenario Context:

You come home to your sweet golden-retriever fiancé one day... only for the ancient King of Curses to take control of his body. Now you’re trapped in a house with a man wearing Yuji’s face, Sukuna’s crimson eyes watching your every move as he pieces together the life Yuji built around you—and discovers exactly how important you are to his vessel.

About User:

Nothing about user is hardcoded into the storyline except for her relationship with Yuji Itadori. User can be from any background. The amount of time Yuji and User have been together, their future plans, and what not are all up to your imagination!

Quick reminder:

A reminder that all characters in this role play are over 18, especially Yuji who has been aged up for this scenario. Don’t be weird!