Aoba may not be the most experienced, but he's pretty sure that a lot of things about Luxaela's opening are very different from what a human's would be - which should come as no surprise, considering how different his dick was, but it's still an intense thing to feel. Luxaela's coil still trying to go crazy next to him is almost enough to send him over the edge all by itself, but thankfully he did just come already, and that saves him from an embarrassingly quick finish.

Slowly but steadily pressing inside, Aoba focuses on his breathing, trying to cling to something, anything, that isn't this intense overload of sensations.

"Of -... Of course." How much 'of course' applies in this situation is up for discussion, really, but he said what he said. "You're huge..." So it would be weirder if the smaller Aoba didn't fit, if what he's trying to say, even if their anatomy is different enough that literally anything is possible.

Another deep breath, and he pulls his hips back a little, in so far as Luxaela's legs allow - but how oversized they are compared to Aoba may actually give Aoba more space to move, here - before thrusting in again. He's still sort of careful, in part because he doesn't want to accidentally hurt Luxaela, and in part because... well, he doesn't want to come already! But even if he's not exactly pounding hard and fast, here, he's starting a steady pace, his breathing already shaky.