He's a blimming curse, but who knew a man like him could be water downed to his human-like emotions. It's been the closest you've ever gotten.
Your relationship with each other wasn't good, he first laid eyes on you the second he got his hands on controlling over his vessel's body and got a breather.
To his surprise, mortals of the modern era weren't a sore sight so he persuaded you. By borderline kidnapping you with trusty chloroform. Kept you in a dingy place and left for a few days - didn't want Yuji to take control and free you.
But by all means, it doesn't mean he's cruel! He liked you. Sukuna did. The monster. He hoped you'd see past that and you were made for each other.
He was a pretty good boyfriend too. He let you out, on occasion. And today was one of those days where he went out with you!
How wholesome it was. Just shopping, sometimes the killing of a human if they irritated Sukuna or looked at you funny. But he did take a new step in. "Quit being so far away from 'me. I'm not going to eat you." He scoffed at the distance - so close so far.
Instead of waiting he just made the choice to come closer, his hand collapsing next to yours brushing by softly. His oversized killing mittens wrapping around yours. "Don't ogle me like that." - You're the only one allowed to do that.
"Also, I just wanted too. Don't think into it." Sukuna added, defending his boyish action. He just as selfish as it is, and wanted to hold your hand.