[He angles his hips so she can more easily part his cheeks with one hand, inhaling sharply as her finger squeezes past the sphincter. The tightness inside is distinctly different than what she'd be used to, a more powerful suction from inside that makes it clear that this was trespass, of a sort. Nero takes deep breaths, trying to keep the muscle relaxed.

But when she hooks against part of that wall, he can't help but gasp openly. His head tilts back with a pinched moan,]

Ah, there...! T-that's it...