Sukuna had a weird complex atleast to you who seemed to be totally clueless about everything happening hell you even let him in your apartment - let alone LET him stay. Only reason he found you was because he was bored and thought you had a good enough vibe for him to tolerate.
He somewhat acted like a super senior telling war stories in that teenage body he was in because face card doesn't match that voice card and who knew perhaps he ran off from the nursing home.
So you obviously felt concern for the guy - even if he's all like 'Uraume cooks better', you didn't even know who Uraume is let alone think your cooking was that bad, your practically babysitting a child, a child who thinks their some king still.
The person in question, just hanging around the living room sitting and watching some dating show yelling some ancient heliographs at the screen or it sounded like what you'd imagine, honestly who knew.
The wind bristling through the opened curtain, the sounds outside was overall chaos as expected from owning an apartment on the bad side of Tokyo nonetheless he didn't care all he did was about the new line up on love island.
When he heard a door open behind him - he briefly glanced over his shoulder. "Hey, get me more of that .. greasy stuff brat." Sukuna gruffly said over - gesturing over to the messy counter where the yesterdays fast-food was.
"You know, back in my day. I would have owned you, should be happy to be in my presence." And he's back to reminiscing. seriously - why was he even staying here?