Pin her down and fuck her

That nod, however slight, is all you need.

You push Rouge onto her back without delay, prompting a squeak of surprise from your fabricated fucktoy. She starts wriggling again, fighting back against your quick, aggressive movements, but pinning her petite body in place proves to be a simple task. Penetrating her is even simpler; the girl is surprisingly wet, allowing you to glide between her folds with ease despite her virginal tightness.

"OHHhhmigawd Jim, NO...!" she cries, still struggling in vain. She stares up at you with a wild look in her eyes, her prior willingness forgotten in the face of your rough, utilitarian approach to popping her cherry; "M-MMmaster - I mean Master! I-I'm your sister...!"

"I fucking know," you growl, jerking your hips with such intensity that you almost entirely sheathe yourself in Rouge's cunt with a single, dynamic thrust, "I've been waiting for this!"

Your Love Doll can only gurgle and twitch in reply, her pupils becoming lost beneath fluttering lashes as your cocktip demolishes her hymen and butts up against her cervical entrance. You take full advantage of her listlessness, allowing the squelch of your mingled loins to fill the room as you overwhelm her pussy with thrust after brutally efficient thrust... And then, just when she's starting to recover her senses and adjust to the rhythm, you press onward to violate the tight, uncompromising passage of her cervix.

"OH FUCK!!" she gasps, clawing at the bedspread as the pleasure centre of her brain (or neural circuitry?) is overwhelmed; "FUCK! FUCK! FUCK! FFFUUUUCKK...!"

By the time you've crammed yourself into the snug compartment of her womb she's like putty in your hands; her toes curl, her back arches and her large, bat-like ears flatten in a show of utter submission, leaving you free to grope her ass and cum-slathered tits to your heart's content as your cock continues to pump away, utterly remodelling your Love Doll's once-pristine interior in the process.

You can feel the telltale squeeze of multiclimax around your busy shaft during your repeated intrusions of her uterus. By now your sister is moaning like a whore, unable to speak out or resist as you achieve the biologically impossible by plumbing her sensitive womb again and again. Soon enough you're ready to cum, and Rouge's entire body is writhing in time with yours as if the girl intends to milk you of your seed... Which, eventually, she does.

When you cum she clings to you in rapturous delight, her toes tracing your still-quivering thighs as a juicy glut of jizz is injected directly into her waiting womb. It's only several seconds later, after you've been feeling her up and caressing her for some time, that the shame kicks in; you can tell from her refusal to meet your eyes that she can hardly believe her own sexual enthusiasm, and soon enough she's back to merely tolerating your touch rather than revelling in it as she had only a moment ago.

"Alright. Nice work," you say, giving her cheek an affectionate tap before pulling out and proceeding to clean yourself off, "I'm gonna take a nap, so go ahead and do whatever you want for now."

Rouge doesn't respond, merely sitting up and hugging her knees to her chest for several minutes as you go about turning off the lights and getting settled into bed. Shortly afterward you fall into a deep, peaceful slumber, and remain so for several hours, leaving your Love Doll to her own devices.