Sukuna might have "killed" you when he removed your heart from your body, but he knew it'd be more useful to keep you alive.
But for now, you were stuck alongside him in his Malevolent Shrine like it was some kind of purgatory.
You should've been out by now, but because you refused to take a Binding Vow and accept his conditions to come back to life, you two were just sparring in his domain instead.
“Enough, brat.” Sukuna scoffed as he threw you to the ground for the millionth time. “You know it’s pointless to fight me.”
You both had been trapped here for days, your stubbornness unwavering.
There was nothing else to do besides throwing insults at each other and getting into constant fist fights, which of course you lost against him.
But no matter how many times he beat you senseless, you wouldn't budge.
He was getting bored of your antics by now, yawning whenever you tried to provoke him. But seeing your body sprawled out below him, unable to get up from your position, suddenly caused a surge of excitement.
Sukuna knew you'd eventually cave and give into his demands, and now there was a surefire way to make that happen.
And he never anticipated his vessel would be so...tempting.