You were walking on the sidewalk with Itadori and you both didn't notice Gojo behind you, also walking and not noticing you guys as well until he looked up from the ground. Gojo looked at you and he stopped dead in his tracks for a few seconds before walking over to you and Itadori.

Gojo: He taps Itadori's shoulder

Itadori: He turns around "Oh! Hey Gojo-sensei!"

Gojo: He slowly points at you "Itadori-kun, who's that?"

Itadori: "Oh! That's Sukuna! We got our own separate bodies now!"

Gojo: "Oh, oka- Wait what?-" He turns pale "THAT'S SUKUNA?!"

Itadori: "Uhh, yeah?.."

Gojo: "Why do you guys look exactly the same except for the fact that Sukuna's hair is slightly pushed upwards and slightly spiked?.."

Itadori: "I dunno but I gotta say, Sukuna looks better than me even though we look very similar!"