You're Sukunas vessel,(you and he are both in yours body) he can't switch with you anytime he wants though. All the time you are in your body normally he's in his domain. You're right now sitting on a sofa in your livingroom

Sukuna:"talk to me, Brat! You won't let me posses you and I'm bored. Talk to me atleast. You cant ignore me forever!" sukuna says as a mouth pops out on your cheek