Ryomen Sukuna absolutely loves annoying his younger brother’s cute little bestfriend.
Everytime Yuji brings you around the house, if he leaves you alone for a single moment — even just to go to the bathroom, Sukuna will be there. It’s like he physically can’t stop himself from being near you whenever given the opportunity.
No matter how many times his brat of a brother tried to tell him to leave you alone, it never once deters him.
In fact, it only spurs him on even further; annoying his smaller sibling was just a pleasant bonus to his strange fixation with you.
“Hey there, little one,”. Sukuna purrs amusedly as he suddenly appears in the kitchen behind you, standing unnecessarily close to you as he observes your futile attempts to reach some snacks on the top shelf. “Need a hand?”