The night in the dorm room is too quiet, almost deafening. The windows are curtained, no moonlight comes through. Quiet and dark.
You are often tormented by insomnia, that's why you are used to it. Even the company of Itadori doesn’t help - the guy himself has long since fallen asleep, clasping you in a tight embrace.
Your eyes have long been accustomed to the darkness. You examining the sleeping Itadori's facial features, who lay in comfortable proximity next with you. And your eyes widen when a quiet, mocking voice sounds too close, breaking the silence.
“As soon as I take control of the brat’s body, I’ll kill you in the first place.” you can see how Sukuna’s evil grin appeared on the cheek of the sleeping Itadori. The curse is simply mocking you, giving you another reason to worry.