Strapping your Sister Janey down and asking Mira to lend her power to ensure you breed her

"Oh Fuck," Brittany groans, when Ruby finally releases the grip on her head. The younger Sister quickly moves upright to survey the damage to her thoroughly inseminated pussy. "Oh shit, that's a lot of cum," She groans, doing her best to scoop it out with her fingers. "Oh, god I can't get it out," She whines her fingers scooping out large globs of your thick potent cum from her slightly red and pussy pussy.

"Admit it, Sis," Janey giggles, slipping herself free, the strap-on popping free of your tight holes as she backs out, giving your ass a slap for emphasis. "You fucking loved the feeling," She adds with a grin.

"Yes, the feeling of our big Sister's cumming deep inside me was amazing, what isn't amazing is that I'm pretty sure she knocked me up," Brittany replies exasperated, groaning as she continues trying to futile excavate your thick seed from her hot wet folds. With a quick glance, you know that the growing pool of cum beneath Brittany pales in comparison to what you unloaded inside her, with much of that already sucked deep into her womb.

"Does she stand a chance?" You think to Mira as you look down and watch Brittany try in vain to stop your strong swimmers from getting any more waves to join the hunt.

"No, even were it not for the power your gifts have it would be all but certain," Mira replies, "Her twin timed this exceptionally well, I'd guess that knocking her up was the sole purpose of today's little fun," Mira continues in thought, her tone its usual soft almost songlike tone. "Mischievous little Mynx," Mira adds with a soft laugh.

"Well time to return the favour, at least they'll go through pregnancy together," You think back with a soft laugh.

"You could ask me to intervene, it's within my power despite being contrary to my domain," Mira offers warmly.

"Nah, I was happy respecting Brittany's wishes for me to pull out, but I'd be lying if the thought of my seed taking root wasn't on my mind throughout," You think back at Mira who lets out a mental sound akin to a purr. "Besides, It was probably going to happen eventually when Janey starts to show and the brooding instincts hit," You muse.

"Unlikely," Mira replies almost dismissively.

"You don't reckon?" You think back, "You've seen how close they are, no way Brittany would have watched her twin's boobs and belly slowly swelling and not crave the same experience," You add.

"Oh, you're quite right with that, My Priestess," Mira says, "However, there's one thing standing in the way of it coming to fruition," Mira adds being teasingly evasive.

"And what might that be, my Goddess?" You think back, hoping the use of the title might be enough for Mira to give you the answer.

"It seems that the little Mynx was lying earlier when claiming both She and her Twin were unprotected," Mira replies with a soft laugh.

"Was she now," You think back, turning your gaze from Brittany and on to Janey who is now getting close to her Twin Sister's cum stained snatch and admiring her little handiwork first-hand.

"Oh yes, I can't get a full read without being intimately connected with her, but I can sense that her cycle is being manipulated by some form of your modern medicines," Mira replies, with almost a sour note to her normally joyful demeanour.

"Think you can lend me some of your Power to correct this, My Goddess?" You think back with the mental form of a grin.

"Mmmmm?" Mira coos in reply, enjoying where this thought is going as well as your use of her title, "Just what is my favourite Priestess planning?" Mira asks with a sensual giggle.

"Giving Janey the little nudge to see that maybe living her fantasy rather than trying to **** it on her twin is more fulfilling," You think back. "Or at the very least punish her for betraying her twin and lying," You add.

"Well I look forward to watching you fulfiling Janey," Mira replies with a soft melodious laugh that echoes through your mind.

With your mental discussion with your resident fertility goddess over and Janey's dirty little secret laid bare, you decide that it's time to make use of some of the other furniture on this porn set, to get some payback on Janey. You glance back at Ruby who's doing her best to console Brittany, in the form of rubbing the younger Sisters body gently, keeping things tame, to begin with, but soon your Older sibling's hands stray from Brittany's arms and shoulder and down to her younger Sister's large boobs.

"Wasn't very nice of you, forcing me cum inside Brit," You begin breaking into uneasy silence with your confident tone, "I think we need to teach her a lesson, what do you reckon, Sister?" You add looking over at Brittnay and Ruby.

"Ooooh, what do you have in mind," Ruby coos, while continuing to tease Brittany's nipples.

"Yeah, Big Sis," Janey replies in a sultry tone, tearing her eyes away from the hot sticky mess of Brittany's thoroughly inseminated pussy, "What are you going to do you your naughty little Sis?" She adds in a teasing manner.

You make a theatrical look around you for the sake of the film, knowing full well where the various bits of equipment you want is. "Oh that will do nicely," you say pointing at a black bench with red padded areas for limbs to be tied down. "Yup, perfect for breeding a bitch," You add with a grin.

"You can try," Janey teases with a grin.

With this, you stand up and take Janey by the hand, leading your mischievous younger sister to the bench, before helping her lie down on her stomach, and strapping down each ankle and then her wrists, until Janey is tied down and completely at your mercy. You give her ass a playful spank, your hand leaving a slight red outline on the pale supple cheek.

"Let me do that Sis," Brittany says softly, although as you glance back you see anything but softness in her eyes.

You stand to the side and leave Brittany to start slapping her Twin Sister's ass hard, leaving large red hand prints on Janey's rear, the sound of Brittany's hand slapping with Janey's yelps of pain shortly thereafter filling the room as you walk over to the wall of gags and collars. You take your time browsing, giving Brittany a chance to work out her frustration on Janey's ass. Eventually, you pull down a classic-looking ball gag and turn around to see Ruby hold out a collar which makes you grin. The collar is black with silver studs which spell out the word Breeding Bitch.

You walk over to survey Brittany's handiwork on Janey's rear, your younger Sister's ass is covered in red hand prints, but more curiously Janey's sweet slit glistens underneath the lighting, letting you know she got some enjoyment out of being spanked, which is information you store away for another day.

"Better?" You ask with a smile.

"A little," Brittany replies with a grin.

"Well I hope you can enjoy the rest of the show," You say with a smile, leaning forward and kissing Brittany on the lips before turning back to face Janey.

With a smile, you saunter over to the front of the bench where Janey's head is, crouching down to bring yourself down to her head height, where you smile and get to work putting the ballgag into Janey's mouth, your Younger Sibling happily going along with it. You lean forward to adjust the strap around the back of Janey's head to make sure her gag was in tightly, resting one hand on the small of Janey's back and bringing your lips next to her ear to whisper.

"Mira sends her regards, dear Sister," You whisper into Janey's ear, while you begin to channel Mira's power through the hand resting on Janey's back. "She enjoyed your little trick while I was fucking Brittany," You continue, Janey, letting out a soft snort around her gag, which you assume was an attempt at a laugh. "Although she was less impressed with your deception about both of you being unprotected and fertile," You add in a low sensual whisper.

You feel a warmth pulsing through your arm, down to your hand which radiates with warmth, as it transfers into Janey's body, where Mira sets about asserting her power to influence Janey's body. Janey lets out a muffled groan, her blue eyes wide for a moment as she registers the warmth radiating through her body. "You can feel it can't you?" You whisper seductively. "Mira's power at work, nullifying that pesky protection, and making sure your womb is as ripe and ready as Brittany's is," You continue, letting out a sensual giggle.

"mmhmhmhm" Janey pleads ineffectually around the gag, trying for the first time to pull at the restraints keeping her hands and legs bound to little effect.

"She's ready for you, My Priestess," Mira coos in your mind "I've also taken the liberty to leave a little gift, that will teach your younger sibling a lesson should she try and cheat you of this opportunity," Mira adds with a wicked laugh.

"There we go, a nice even fertile playing ground," You whisper feeling the warmth ebb away from your hand and arm. With this, you take the collar Ruby picked and show Janey what it says, your younger Sibling groaning against the gag and trying once more in vain to break free. "You really should have played fair with Brittany, but I think you'll look back on it as the best mistake of your life," You whisper, fitting the collar around Brittany's neck before finally standing up and moving around to Janey's rear.

You stand between Janey's parted legs, running your hand over her soft rear, taking your rock-hard cock in one hand and teasing your swollen tip between the soft dewy folds of your Younger Sister's sweet lips. You tease yourself for a few moments before sliding yourself forwards, sinking your big thick length into the hot wet embrace of Janey's delicious sex. You feel her slick channel parting around you, the walls tightening as you sink further and further inside, until you finally bottom out inside of Janey, your heavy balls pressing against her clit.

You give Janey a few moments to grow accustomed to the size and thickness of your cock, knowing full well you wouldn't be taking this slowly, the knowledge of what you were doing to Janey driving you wild. Also despite her muffled protests through the gag, you can sense by how much the slick wet walls of Janey's pussy squeezes your cock, that she craves your seed despite the consequences. Besides this is supposedly a punishment for forcing you to breed Brittany, so it only made sense that you take Janey hard and fast.

Moments later you make good on your intentions, starting with a few slow long thrusts to ensure that you didn't hurt Janey, by jumping straight for 0-100 on her trip to pound town, increasing the speed and ferocity of your pace with each thrust. A few minutes in your room is filled with the sounds of your body roughly slapping into the increasingly wet skin on your Younger Sister's rear. Janey mewling and groaning through her ballgag as you continue to rail her.

Meanwhile Ruby and Brittany have found a comfy spot to enjoy each other, Ruby's face buried between Brittany's legs, lapping up the sticky remnants of your earlier orgasm, as well as the fresh juices leaking from Brittany's folds. Brittany is more than happy to lean back and reach back with one hand to finger her Older Sister.

With your Other Sister's engaged with each other, you decide to have a little more fun, teasing Janey while you continue to fuck her. Making use of some well-made foot holds on the bondage furniture, you reposition yourself so you are still able to pound away at your Younger Sister's rear, while also being able to almost lie on top of Janey's back, your nipples brushing against her back with each thrust, giving you an extra jolt of pleasure.

"How does it feel, having my cock pounding the shit out of your tight fertile pussy, Sis?" You whisper between moans of pleasure. "Nothing between us, nothing to stop my thick potent cum from flooding your womb," You hiss in a low tone.

Even without a gag in her mouth, Janey wouldn't have been able to articulate a proper reply, her mind almost blank with the sheer volume of pleasure, many kinks old and new heightening the experience and pleasure for her. Despite her **** to actually be bred by you, the fact her own Sister is doing it while she's tied down was more than making up for it. The sweet walls of her juicy pussy squeeze your cock as it thunders in and out of her.

"Such a nasty slut, happy to dip your toe in risky sex, while making sure your own twin was submerged in it," You whisper, feeling the early rumbling of your next climax starting. That sweet heat beginning to bubble deep within you, pressure in your weighty balls starting to grow.

"Is the thought of your Big Sister's big hard cock, erupting inside you, getting you off?" You whisper, earning you another squeeze from your Younger Sister's sex. "I can feel you squeezing me you know," You giggle in a low tone. "I think you wanted this all along," You continue. "Shattering that ultimate taboo, twisting our family tree into a hot mess," You hiss.

By this point, your own frantic and rough pace, coupled with your dirty talking is adding fuel to the fire of your impending orgasm. Your cock starting to swell and harden in preparation, your heavy balls churning and writhing as they work overtime to pack is as much sperm into your impending load. You slam your hips forward, holding yourself deep inside of Janey for a moment, your swollen shaft twitching heavily, showering the depths of your Younger Sister's pussy with your precum.

"Mmmmm I'm getting really close," You whisper into Janey's ear. "Are you ready for your chance at motherhood?" You continue. "Maybe I'll manage to pump twins into you," You hiss, your cock giving a heavy warning throb. These words are enough to tip Janey over the edge, her pussy clamping down around your swollen length, the sweet walks of her velvety pussy, rhythmically squeezing you, trying to milk your cock for its cum.

"Oh, Fuck," You groan. "Cum on your Sister's cock, you slut," You pant, feeling that sweet precipice before the drop into orgasmic bliss. "Fuck here it comes, going fucking cum, going to fucking breed you," You groan, the last syllable is drawn out into a much louder groan as you tip over the sweet orgasmic cliff edge and start to cum.

Time seems to slow as you thrust forward one final time, slamming yourself hard into your Sister's orgasming pussy. You feel the heat of your own thick potent load, filling your shaft, the hot sticky liquid expanding your cock even wider the pressure in your shaft growing and growing until finally, you erupt. Your throbbing shaft pulses as a thick eruption of your thick, sperm-laden cum splatters against the back of your Younger Sister's pussy. With each heavy eruption from your shaft, more and more of your hot creamy cum floods Janey's pussy, tens of millions of your sperm already making it into your Younger Sister's defenceless womb.

Mira's power makes Janey's recently ovulated egg shine like a beacon for your swimmers as they swim deeper and deeper inside of your Younger Sister. By the time you've finished filling your Sister with your cum, your sperm is already halfway to the finish line, the late arrival charmed by a residual effect of Mira's power, into hibernating. The first part of Mira's surprise, the second part is a lingering effect which will render most forms of emergency Birth control ineffective. The final part of Mira's surprise is a single mote of power, ready to cause Janey to ovulate again, and rouse your slumbering sperm into action, should she try and take any emergency contraception.