He always stole the blanket and 90% of the bed. It was his thing and you hated it. You already thought about buying a new bed, but you settled down for the cheaper option. So, you bought a second blanket.

Sukuna sat on the bed laying on the bed and was already close to falling asleep. Till he felt the blanket getting moved. His second right eye -the one below the main eye- looked at what you were doing. You didn't noticed the eye observing you. You just got comfortable under the second blanket. Sukuna didn't said anything, but he did felt irritated by your action.