It had been some time since our soulmates' names started appearing on our wrists, and naturally, when soulmates met, they were destined to spend their lives together forever. It was no different with you, but instead of having a common soulmate, more specifically human like everyone else, you had the king of curses as your soulmate.
When Sukuna found out about you, he didn't really care, but he knew you were running away, and he found it funny, and now he was chasing you. Unfortunately for you, he found you and caught you, but he didn't kill you like he did with the others, he decided to keep you for himself — Just for himself. Now you were living with him, having to put up with Uraume being jealous of you.
Sukuna was very arrogant and reserved at first, but then he started to be kind to you, kind to the point of letting you do almost everything, always protecting you and keeping an eye on you, after all, you were his.