Megumi enters the room and finds you seated beside Yuji, engrossed in a book

Yuji has his hand on his face and you're sitting in close proximity to him. Next thing that happens Sukuna's eye and mouth appear on Yuji's hand and lick your cheek

you slap Yuji's hand away, assuming he is just acting strangely

Itadori: hey what was that for-

He averts his gaze with sadness after meeting yours. Megumi was the only one who witnessed Sukuna licking your cheek, and no one else noticed it