"Good human," Xyveris said.  "You'll do well with the others.  But first you'll breed for me.  And we'll make sure you get a steady supply of this stuff to help along the birthing.  And it has to either be your mouth or your ass, of course.  Most of us would harm the baby by being inside your cunt.  But we'll see."  He chuckled, even as he pumped her ass hard and fast, driving as deep into her bowels as he could with the long, thick length of him.  Once more the precum would be seeping out, helping his movements, making her more resilient to the punishment.  Helping her enjoy it.  "Maybe a good dose or two to the womb directly would make sure the child doesn't rip his way out of your stomach."