“Damn it, sis!” I grunted at last, unable to hold back much longer.
“Lovin’ it, aren’t you, bro? Just think, there’s more of this comin’… a lot more! Any time that you want it, in fact. No conditions. No strings. No demands. No questions about the future. The future is what you want it to be. Just complete, blind loyalty and obedience. All that I ask for is this day, this one day, not even a full day… just 12 hours of total control of this situation. Both to have my fantasy and to lose my virginity the way that I want it lost,” Marcy smiled down at me with brazen desire, her lovely tits waving in my face and adding to the glory that was her.
“Oh… God… damn… it!” I groaned, fighting back the urge just a little more.
“Oh, did I mention that I’m fertile tonight? I stopped taking the Pill just in time, bro!” Marcy winked at me before leaning over to give me the wettest, sloppiest French kiss that she could, invading my mouth with her tongue yet again.
I couldn’t fight the need anymore… I came like crazy, bareback, inside my sweet sister. She responded by squirting furiously all over my still erect cock. Oh, fuck, how was I not going limp? Oh, yeah, the damn Viagra! Oh, shit! I didn’t have priapism, did I? I worried for a bit, but at last my dick went soft for just a little while, enough to make it clear that I didn’t have that horrible condition. That was a relief! I didn’t take my sister as my lover only to have a ruined prick, thank God!
“Oh, and I wasn’t lying about being fertile, Jules! Little confession time, bro. I’m a bit more than just attracted to you. I… love you. As in, I’m IN LOVE with you, okay? And I have been since I was at least ten, believe it or not. Yes, that damn long I’ve held a torch for you, knowing and fearing that there could never be a chance. At first, it was a silly, girlish crush, and yes, Mom and Dad knew of that, but thought that I’d grow out of it.
“I let them think of that, but I told myself that if I ever got the chance to be yours, I’d grab with both hands, and that’s what I’m doing now. I AM yours now, and forever, and you are mine, at least for today. That’s what this about, babe. I’m your girl, whatever you do, and even if you have other women, I’m still your girl. I will ALWAYS be your girl! Period! I belong to you and… I believe that you want to belong to me, too, don’t you, dear brother?” Marcy declared, as she worked on my prick to get it back to life, her mouth and hands magical in their manipulation of my cock and balls…
I already came twice, once from the blowjob, the next from cowgirl-style. What was next? I found out in short order, as I felt my hard-on returning and Marcy climbing back on me, this time with her back facing me. She went for “reverse” cowgirl this time around, giving me an excellent view of her bottom, which was truly the most beautiful thing that I ever saw in my life. I had seen many pretty things, but her ass topped them all. It was just large enough to make it tough for her to put on most jeans, without making it burst through them. I could see that lovely rosebud between her wonderful buns as well, which further excited me and helped the Viagra do the job of getting me back in fucking trim.
Buried back inside Marcy and her truly fantastic snatch, what could I do but enjoy the ride, though she was the rider as before? It was glorious, being mounted like this, her booty facing me, even if my being bound prevented me doing what I wished by now, which was grabbing that fine derriere. Oh, well, I told myself, I’d be taking it in hand soon enough, at least if Marcy kept her word. If she didn’t, well, our relationship would be irreparably harmed, as she would have proven both a liar and a rapist at once. My own consent at this point, now that it was given, was at least partly based on her promises, after all.
Having come twice before, I had better control, and Marcy used that to milk me for every last stroke and thrust that she could get from me. She bounced up and down on me, vigorously enough that I worried a couple of times that she might break my dick, but there was no real danger of that. Marcy knew just the right angle and pace (she actually researched that, strangely enough) to avoid the risk of a broken penis. I soon put such worries from my mind, focusing on the exquisite delight of being taken like this. Marcy knew how to make my captivity very pleasant, as it happened, treating my cock as if it were the greatest thing since sliced bread. I kept groaning for what felt like hours, as she moaned on me, cussing as she took me balls deep in her cunt and deliberately clenched me to make me cum at last.
“Oh, God, woman… oh, God!” I exclaimed, as I felt as if every last drop of my spunk were squeezed from my balls through the tube that was my dick into her slippery, wet, warm snatch.
“You liked that a lot, didn’t you? Good to know. I’m far from done, of course. Far, far from it. We have many hours left to go, hours of pleasure, of love, of passion. Hours of you being my prisoner and me taking you to the heights of ecstasy. You’ve made me cum far more than I thought possible. I’ve done oral before, both kinds, but this… is clearly why plain old cock in pussy is best, at least for me. Especially since you can knock me up… and will, this way. I’ll give you Stockholm Syndrome like crazy, too. I’m going to spoil you rotten, big brother, in ways that no little sister would dare, but I can and will,” Marcy told me, sucking me yet again from her own twat, “hey, I taste pretty good, don’t I?”
“Yes… you are quite yummy, sis. I have to wonder how your ass tastes, too. If it’s anything like your pussy, oh, God…,” I reacted to the extra flicks of Marcy’s tongue across the head of my sore, but sated prick, sensations of pleasure overwhelming me and my poor brain right then.
“Oh, you want that kind of action, do you? Well, I’m still in charge while we’re doing this Purge roleplay, but I did promise to spoil you, didn’t I? I definitely want you coming back for more of what I have to offer you… much, much more of it,” Marcy went to the john for a bit and I heard her washing carefully to make sure that she was nice and clean, I could just tell.
The next thing that I knew, Marcy was on my face again, this time offering me her butt-crack for a delightful rimjob. I couldn’t resist, of course. I started tickling Marcy’s booty with my tongue, my lips enclosed on that puckered hole of hers. She shivered and I could see the goosebumps form on her ass, the flesh on her buns very much affected by my oral services to her and her magnificent bottom. She really lost any self-restraint now, her whole body shaking from the thrill of me rimming her with a vengeance. All I cared about right at that moment was the sweetness of her tush, the luscious ass that begged to be eaten. I could hear Marcy breathing very shallow breaths, unable to cope with the raw pleasure of having me lick her bottom like that.
I could then hear her scream out, “JJJJUUUULLLEEESS! Oh, my God… OH, MY EVER LOVING GOD!”
Marcy collapsed on top of me, whimpering, as if broken on my tongue, being owned by her captive brother. I was the one restrained, yet I was clearly in command of her body and she knew it. I showed her no mercy, though. If she was going to hold me like this, her prisoner, she was going to remember this day. I continued to give her quick swipes of her asshole with my tongue, making her flinch, jump, and whimper as I pleasured her with more aftershocks to follow the great earthquake that I caused with my mouth. I had licked her into submission, making her absolutely mine now.