It takes him a few seconds to realize what just happened. The usual culprit when it comes to this kind of thing isn't here, and sure enough, those heterochromatic eyes most certainly aren't Yuno's.

Yukiteru's face turns bright red. "W-What are you--" he demands, and the only reason he's not running as far away as he can right now is because he literally can't.

She's completely naked. If this is some kind of weird dream...