You start taking off your clothes. Tracy looks up at you, with what you realize is hope fading from her face. You realize she's been hoping that you would be her rescuer, instead of being another ravisher.
"No, not you too," she says softly, with resignation in her voice as you kneel down behind her.
"She likes to act a little hard to get," your father chuckles. "But once you actually get inside of her, she's compliant enough."
"Please, don't," Tracy says weakly, lowering her head a little as you wiggle the tip of your cock against her slit.
"Our genes need to survive, son," you father tells you. "Whether it's you that knocks her up, or me, it's still ultimately my bloodline continuing, so I don't mind sharing your sister with you. It would be a longshot for me to impregnate anyone at this point anyway. Besides, we may be the only two men left in this world. At least, unless we can make more sons." He leers at Tracy. "Although more daughters would be fine, too." He looks down at the two of you. "Take her, son. She's still got some breaking in to do."
Having your father watch wasn't the biggest turn on, but if that was how you had to fuck your sister, then fine. You put your hands on her waist, and guide your cock into her. She moans softly as you do so, her pussy clamping down on your cock hard. She was no longer in control, as she had been yesterday. Things had spiraled quite horribly out of control for her.
"See?" Your father chuckles softly, in a way you'd never heard him laugh before. You're wondering if the end of the world had unhinged him just a little. Maybe it hadn't been the best for your sanity, or anyone else's, as well. But it seemed to be doing wonders for your sex life.
You pump in and out of Tracy's reluctant pussy, although most of the fight was already gone from her. She whimpers a little, making noises like she did last night when your father took her. You feel pity for her, but just like it wasn't enough last night for you to come to her assistance, today it's isn't enough for you to stop ravishing her.
Then, her sounds begin to change in nature the more you fuck her, your cock pounding into her from behind with more and more gusto. The change isn't lost on your father, either.
"She's starting to like it," he marvels, kneeling down beside Tracy. She turns her head to avoid looking at him, although her gaze catches yours out of the corner of her eyes. There's a defeated look in her face, although the beginnings of passion as well, mixed with equal parts of loathing, either directed at the men of her family or herself. "That's more than I got from her last night. All she would do is lie there and cry as I fucked her, and didn't even move at all." Your dad runs his hand over his daughters naked, sweaty back, making her shudder. "She's a lusty one, though, just like her mother."
Tracy whimpers again, but it's an entirely emotional response to the shame she is feeling, and not a physical one, as her body is clearly beginning to respond positively to getting screwed. Involuntarily, her ass begins grinding back against your thrusting, even as she begins to cry a little.
"Don't let the others know," she pleads. "I can't bear them knowing about this... about what we're doing..." She moans, despite her efforts to stifle it.
"They'll know soon enough," your father chuckles evilly. "If nothing else, once your belly begins to show."
"Oh, God," Tracy moans, one hand going to her stomach involuntarily, as presumably the image of carrying an incestual baby enters her head.
"Or sooner," your father muses, "if we decide to initiate Milly into the fun."
"Not Milly," Tracy whimpers. "You can't do this to her." She moans again.
"We've got to repopulate the planet," your father tells her softly. "Two men, and three women, including your mother, although I don't know if I want to let your brother have her. But I can let him have Milly, and we can share you."
"Not Milly..." Tracy repeats again, shaking her head slowly. "She can't know about this, or be a part of this. I... I can take care of both of your needs, if you just leave her alone." She pauses, fighting for breath, and composure. "I'll even tell mom and her that I agreed to this." Another moan escapes her mouth. "To have sex with the two of you. To be bred... for the good of humanity." She hangs her head.
"You like getting fucked that much?" Your father teases, giving you a wicked wink.
"No!" Tracy says, with a strangled sob. "You know that's not true." She shakes her head again. "I just can't let you do this to my sister." She groans, fighting a rising tide of passion. "I don't want her to get raped by her own brother, and father..."
Then you feel her pussy spasm around your cock. "Oh God, no," she whimpers, and you feel her body shake against yours as she orgasms. Triggered by the sensations of her quivering cunt, you blow your load into your sister's twat. "No..." she repeats, feeling your spunk flood into her womb. Your dad had said his getting Tracy pregnant was a longshot, referencing his vasectomy, but you were under no such limitations, and Tracy knew that. A sob of defeat escapes her throat, even as her body continues it's orgasm. You pull your cock out, only after it has been fully deposited it's cargo in your sister's wet depths.
You feel a little guilty, but the orgasm was incredible. You're not sure how you feel about sharing Tracy with your dad though. Or him not sharing your mom with you. Strategically, it might be best to go with his plan, but part of you wants all of the women of the family for yourself. He did say you could have Milly as well, just for yourself, although you don't know if he wouldn't want a go at your cute youngest sister eventually as well. And Tracy seemed to want to protect her sister from the both of you. Not that she seemed in a position to do anything to stop it. |