Did somebody say fill 'er up?

You grin wickedly as you grip Sera's hips tight and begin to thrust up into her along with your bouncing of her body upon your throbbing cock, intensifying your actions as you work yourself up to your orgasm. The stronger actions cause Sera's inner muscles to clench around you tightly and a strangled moan to leave her as her own pleasurable sensations begin to overwhelm her all over again. Her hands come down upon yours and squeeze tightly as though to make sure you didn't stop what you were doing. You didn't really need that reminder, but it was nice to know she was enjoying the ride.

"Like...that, baby? Hope...ya do...cuz we're gettin' close to the end...of the line.", you grunt out, your own breath coming harder and rougher as you feel your cum-swollen balls nearly aching with the desire to finally release your load.

"Ah! Ah! E-e-end? Wh-what d-d-dooooo you m-m-meeeean?", she gasps out with a thick and lust-heavy tone.

"What do you think I mean, sweetheart?", you retort as you slam your prick up into her dripping cunt especially hard, jolting her entire body in a way that makes her ass and breasts bounce nicely and wrenches another broken moan from her.

It also seems to jar understanding into her as she gasps out in realization and looks over her shoulder at you with wide eyes. "Y-you m-mean t-t-to releasssse insssside of me? Y-y-you're trying...t-t-to breeeeed meee-e-e-e-e?", she asks, though she cannot keep herself from moaning out in pleasure as you continue to fuck her through her questioning.

Now, the fact of the matter is that the last thing you ever wanted was Halloway bastards out there and, given how much of a man-whore you are, it would be very unlikely such a thing wouldn't happen eventually. After all, humans have the unique genetic ability to be able to cross-breed with every alien species they've encountered so far. A rather odd thing that many geneticists, alien and human both, have yet to discover the full science behind, but it is something that has helped humanity prosper beyond their world. After all, nothing gets a species' foot in the door better than having a bunch of their half-breeds around in the universe.

You, however, have no desire to have children, whether they be fully human or otherwise, and so you had a procedure done early on that made sure such a thing wouldn't happen. You didn't want anything snipped so you decided on something a bit more high-tech; a nano-chip installed in the base of your spine that sends electrical pulses through your nervous system and uses said electrical pulses to render your semen unable to knock up any female (or other gendered alien that could get pregnant) at the moment of climax. True, some would think a spinal surgery way more risky than a rather easy procedure like a vasectomy, but, hey, your balls always take priority in your mind.

So "breeding" Sera isn't really a concern...but, hey, she doesn't need to know that, does she?

"Maybe I am, sweetheart. Maybe I'm tryin' to fill this Raxasian pussy with my cum and get you all knocked up with a little Halloway in your oven.", you tease her as you thrust up into her again and again, already feeling yourself on the verge of your climax, "Or don't you want to feel my hot fuckin' cum up inside of you, Sera? Don'tcha want to fill me fillin' you up just fuckin' right?"

You thrust up into her and grind your pelvis against her as you say this, making her shudder against you as she falls backwards against you with her back pressing into your chest. She pants heavily, her pink scales seeming to be touched with a darker crimson hue as she looks over her shoulder at you again. Her eyes, solid amber though they may be, seem to be hot with lust as she flickers her tongue out against her lips and then meets your gaze heatedly.

"Yesssss. I want that. Fill me, Derrick. Fill me with your sssseed. Pleasssse!", she whimpers out at you pleadingly and you grin wickedly at her as you again redouble your efforts to do just that.

"All you had to do...was...ask!", you grunt out as, after a few more hard, pounding thrusts, you feel pleasure seize you and you hilt yourself inside of Sera once more, making her cry out sharply in ecstasy as you begin to shoot your load inside of her. You cum hard and, at feeling the heat of your thick cum in her womb, Sera's cunt tightens around you again as she cums along with you. Her inner walls clench and unclench around you, seeming to try to milk your cock for every bit of jizz you can give her and you are happy to oblige as you fill Sera with your spunk. You paint her insides with your color and she shudders in ecstasy at that sensation, her pussy clenching tight around you as though to try and keep every drop you've unloaded inside of her from spilling out.

She does a damn good job of that as, when you come down from your climax and lean heavily back in your seat, there is barely a dribble of your cum spilling from her despite your position. Perhaps Raxasian biology has a way to make sure every bit of semen gets where it's supposed to go? Well, doesn't matter to you since you paid good money to make sure that, even if it gets there, none of what you gave her could get her knocked up. Still, interesting thing to know and, as you sit back in the afterglow of your climax, Sera leaning heavily against you as she shudders and shakes with the continuation of her weakest fourth climax that still soaks your cock and has her pussy almost lazily massaging your still sensitive prick inside of her, you think that you learned a lot of interesting things about Raxasians today.

You wonder, though, if Sera learned anything herself...and if she was happy with the "lessons" you gave her.