Throughout the universe life has discovered many strange and wonderful mechanisms of reproduction, but perhaps the most remarkable is that found on the not too distant world of Futan. In order to understand this extraordinary quirk of biology, let us observe a typical mating ceremony of the Futani people on their homeworld.
 
 
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The expansive shared sleep chamber of the Aurovana Household was buzzing with excitement on this special day off work. Every sub in the harem knew that this was no ordinary household breeding holiday: today was going to be the ultimate celebration of Opal, their harem prime.
 
 
Lounging on the dais in the center, Mistress Aurovana surveyed her harem with pride. Opal had served her well for over ten years now as prime: their numbers had grown and the work done by the diligent subs had elevated the household's social and economic standing considerably.
 
 
Aurovana breathed in deeply, taking in the sight, sound and smell of the horny, naked subs, all eager for the coming celebration. The present members of her harem were engaging in a variety of sapphic delights to prepare themselves to be bred by their mistress. However, in several places, she noticed that the motions of their bodies on the cushioned chamber floor hinted that a few subs had allowed their shafts to extend and join themselves in a mating union. Many household mistresses would have punished such behavior, claiming that mating was an exclusive privilege of the doms, but Aurovana always pretended not to see this faux pas. Privately, to Opal, she had confessed that this love making within her harem made her aroused, so the prime had quietly encouraged those under her to discreetly breed as their desires lead them.
 
 
Aurovana's attention was drawn back to her side, where her beloved Opal was unable to conceal her eagerness for the ceremony to begin, bouncing slightly while her second, Lilya, caressed her breasts enticingly. Deciding that there was no reason to delay any longer, Aurovana shrugged off her robe and stepped forward.
 
 
"My beauties," she addressed the room, "we are gathered here to celebrate the life and service of my precious Opal. I won't bore you all with a speech about honor or love, since I know you all care for her as much as I do, but I do want to say a word in her praise for being such a capable overseer of my household. Opal has been the finest prime I could wish for."
 
 
The crowd cheered in agreement with their mistress and Opal glowed with joy at the compliments.
 
 
"Thank you, mistress," Opal said with passion.
 
 
Aurovana embraced her in acknowledgement and continued to speak. "I will soon take this lovely sub and fill you all with her love and her seeds of life. But first, please welcome Lilya as your next prime."
 
 
The younger sub stepped forward and bowed humbly. The harem applauded. Although the decision belonged entirely to the mistress of the household, Lilya had been the popular choice as well.
 
 
"I will do my best to serve you well, mistress," Lilya swore reverently.
 
 
Aurovana and Opal each accepted her oath with open mouthed kisses.
 
 
Finally, Aurovana spoke the simple words Opal had been waiting for. "Let's begin. I'll fill you one last time, then you may take your place within me."
 
 
At once, Opal eagerly pressed herself against Aurovana and they kissed intensely. Lilya knelt and began licking and sucking her mistress's shaft and fingering the pussy just below it. The Futani dom's dick was already fully extended in anticipation of the impending breeding, but the young sub's touch coaxed it to harden as well. When Aurovana's member was completely ready, she picked up Opal and laid her on the fine cushions below. She spread Opal's legs and gently pushed her rigid cock into the sub's wet vaginal petals.
 
 
Opal moaned in pleasure at this final, loving treat. Thrusting deeply and swiftly, Aurovana concentrated on giving her loyal prime pleasure. Soon, Opal cried out and quaked in orgasm.
 
 
The two of them caressed each other for a moment afterwards, as they recovered. Soon, they both felt ready for Opal to fulfill her destiny. Keeping her cock in the sub, Aurovana rolled them over, putting Opal on top. With help from Lilya, Opal lifted herself up and then knelt between her mistress's feet. She looked up at her mistress, eager for permission to take her final journey.
 
 
Aurovana nodded. Grinning widely, Opal carefully pushed both hands into her mistress's hallowed pussy. She continued pushing, sinking deeper into her mistress until her head began to enter the opening.
 
 
"Goodbye, and thank you, mistress," she cried out just before her mouth was covered.
 
 
Her mistress just moaned at the intense, familiar feeling of having a sub entering her body. She was deep enough now that Aurovana was able to start pulling her, but she allowed the eager sub to continue doing most of the work. There were a few pauses as Opal shifted to curl up inside or to find something new to push against with her legs, but before long the sub's toes slid inside and she was gone.
 
 
With eyes filled with lust, Lilya began massaging her mistress's bulging belly. Opal's form was only discernible for a minute before it softened and became less defined. The powerful enzymes unique to the womb of the Futani dom split her prey into individual cells so they could be siphoned away. This stream of loose cells were channeled up into the glands in her breasts, where they underwent a remarkable transformation. Each cell was reshaped into a viable sperm, retaining almost exactly half of its original DNA.
 
 
When Lilya saw her mistress's breasts begin to swell with the liquified remains of her predecessor, she quickly mounted Aurovana's rock hard cock. Bouncing eagerly, she drew the first load of semen into her fertile womb. She cried out in joy when she felt the warm, life-creating fluid fill her.
 
 
Not wasting a moment after receiving her dose of the precious seed, she moved aside and waved another sub to take her place. Only after the throbbing cock was again pressing at the entrance to a futile uterus did the new prime seek her own pleasure with her hand.
 
 
Aurovana smiled at Lilya's dedication to her duties. Lilya continued to impress as she massaged her mistress seductively any time she was not too busy preparing the next member of the harem to receive a dose of sperm. With the harem prime keeping things organized, Aurovana was free to relax and bask in the nonstop parade of tight pussies milking her cock.
 
 
Although her heightened sexual state meant that she was spraying her bountiful seed more often than a human male could have, breeding the entire harem was a long and tiring process. Several hours in, Aurovana began to slow down, lacking the energy to maintain the continuous orgy. Seeing her mistress had grown tired, Lilya called a brief halt to the line of horny subs so the dom could feed and regain her strength.
 
 
As was often the case on a breeding holiday, Aurovana chose to treat herself and consume one of the smaller subs for her midday meal. The chosen sub had been waiting nearby, happily watching her harem sisters getting bred until it was her turn to contribute to this special day. She had lost count of the orgasms she had experienced as she watched and was now thrilled to fulfill her part.
 
 
At Lilya's signal, she crawled over and offered her feet to her mistress's lips. The dom kissed and licked them tenderly before drawing them in and swallowing them. With Lilya's help, the horny meal slid smoothly down Aurovana's throat, into her stomach. Although this sub would not contribute any of her genes to this breeding celebration, as the digestive acids began to burn her, she gloried quietly in the honor of assisting her mistress impregnate so many.
 
 
Lilya and a few other horny harem members massaged their mistress lovingly, helping her digest her meal. When Aurovana was feeling re-energized and thoroughly aroused again, Lilya restarted the line of fertilization.
 
 
Lilya continued to guide the breeding orgy with an efficiency which made her mistress proud. Over the course of the day, she even arranged for those tending the nursery to come out in shifts to each receive a generous load of cum. Things went so smoothly that Lilya was one of many who were able to get their womb filled a second time that day after every adult member of the harem had been inseminated.
 
 
At the end of the day, exhausted, with her breasts drained, Aurovana held the new harem prime closely as she drifted to sleep. By Futani standards, this had been a truly wonderful celebration to mark the end of Opal's life and the beginning of Lilya's time as chief of the household's subs.
 
 
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And so, you see, that the unique physiology of the Futani allowed a single individual, such as Opal, to have far more biological daughters than she ever could have as a living parent. The traits which made her such a submissive and eager gut slut contributed directly to her odds of spreading her genes to a large number of the next generation. Perhaps next time we will explore the remarkable way in which the Futani reproductive system interacts with another intelligent species: humans.