Life After Futas: Intro

Author's note: This is an anthology series, exploring the world which I map out in this introductory chapter. This intro may read as dry, but I find that it's an interesting jumping-off point to set up the rules of the scenario I'm writing it. Projects like this have been done before, but I wanted to try my hand at it.

Warning: This story contains futanari, transformation, breastfeeding, semen with intoxicating effects, addiction, and feminization. Some later chapters contain BDSM elements. All characters are over 18 years old.

The world changed forever on February 28th, 2026. On that day, over the course of twenty-eight hours, the entire human population experienced drastic physiological changes. Many have even argued that from that point forward, we became a different species entirely. What is certain is that humanity will never be the same again.

The most significant enhancements were experienced by roughly fifty-four percent of women. Their biological sex shifted completely, turning them into what is popularly known as 'futanari' or 'futas', a term taken from pornography. These futas have fully functioning genitalia from both legacy sexes. This includes a penis, testicles, prostate, vagina, clitoris, uterus, and ovaries. Interestingly, more than eighty percent of trans women were converted into futas, even the closeted ones.

While futas possess features of both legacy sexes, they are certainly not typical examples of either sex. The average cup-size, for example, is F among futas, with a great many ranging even larger. Their bodies tend more heavily towards an idealized 'hourglass' figure, with thin waists and large hips and buttocks. According to general consensus, they are also considered to appear more feminine and attractive than what was ever previously considered typical.

In regards to the male aspect of their physique, they are beyond extraordinary. Sixty-five percent of futas have a penis between eight and ten inches in length, and two-point-five to three inches in diameter. For reference, the high end of that is approximately the size of a pringles can. On average, their testicles are twenty-seven cubic inches, or roughly the size of a large chicken egg.

Their fluid-production is a whole other matter. A typical futa releases eight to twelve ounces of highly-potent semen per ejaculate. With no refractory period and prodigious sexual appetites, the typical futa releases upwards of a gallon of semen each day. Part of this is due to hyperactive testicles and prostates. They owe the volume that they can store to the fact that they produce no waste. Thus, their bladders now act as a secondary prostate for the purposes of storage.

This brings us to the first of the universal anatomical changes. Human beings no longer defecate. What exactly happens with our waste remains a mystery. Most non-futas still urinate, yet their urine contains no waste. The purpose and anatomy has changed entirely. The nerves and membranes within the rectum are now much more similar to a vagina, causing erogenous pleasure when stimulated, and far less pain than the previous version. Like vaginas, the anus is now self-lubricating and self-cleaning. The sphincter itself is also extremely sensitive, behaving like a large donut-shaped clitoris. Beyond its use for pleasure, it can also ingest and process nutrients from semen.

Futanari semen is extremely rich in nutrients. Some individuals have opted for diets consisted exclusively of this wondrous substance and are healthier than ever for it. Ingested anally, it's even more beneficial than ingesting it orally. It does, however, have some side-effects, which will be described after a brief tangent.

The flavor of futanari is unique to the individual, but it is always delicious. To varying degrees, it can be sweet, salty, and savory. Occasionally, a futas semen is comparable to some food or another, but otherwise each futa's semen is her uniquely tasty flavor that occurs nowhere else.

Futa semen has done wonders to eliminate world-hunger. What's had a bigger impact is their milk. Nearly all futas and a third of non-futa women lactate, regardless of whether they are nursing. Human milk is now quite different than it was prior to the change. For starters, the taste is quite different. While some individuals have a unique signature flavor, most human milk now has a flavor described as similar to rich vanilla ice cream. More importantly, it is roughly as nutrient dense as futanari semen.

Milk's advantage over futa semen is that the side effects that both fluids share only apply to adults in the case of their milk. Similarly, while lactating now feels sexual, even orgasmic, this reaction does not occur when feeding children. The volume is also a great advantage, as the typical milk production ranges from two-to-three gallons per day, with larger breasts often producing more. Of the two fluids, milk also has a higher water content and is thus hydrating.

Semen induces more potent side effects, and milk only induces them in adults, but both fluids cause them, nonetheless. One that is immediately noticeable is a drug-like rush of euphoria, especially when futa semen is ingested anally or vaginally. This lasts thirty-to-ninety minutes and doesn't harm a person's mental faculties. Still, it is the most beloved high on earth, and many drug addicts were able to recover due to this new readily available high.

The aphrodisiac-effect is the next noticeable side effect. Arousal and sexual sensitivity is increased, while discomfort-sensitivity is significantly decreased. All futanari have extremely high libidos, while most non-futas had their libidos increased by varying degrees when the change occurred. The regular consumption of milk and futa semen has only multiplied this change.

A more long-term effect is considered a net positive without any drawbacks; that being a general improvement to health. Regular exposure to futa semen or milk improves cardiovascular health, reduces organ-damage from exposure to toxins, and makes the skin and hair clearer and more vibrant. Even baldness is completely reversed, while acne, cysts, and warts simply disappear.

There are also more pronounced effects that are specific to certain individuals or demographics. For instance, twenty-one percent of cis men become feminized. This process is called 'sissification', where men are converted into 'sissies'.

Almost universally, sissies lose their body/facial hair, and its growth ceases permanently. The sissy loses significant muscle mass and is even reduced in height. Among sissies, the average height is five-foot-two. Facial features soften and become more feminine. The breasts grow, typically to a B or C cup. The waist, butt, and thighs grow significantly, resulting in a 'bottom-heavy' frame.

Sissies take on the hormone-production of a healthy cisgendered woman, with estrogen and progesterone dominating their sex-hormones. Aggression and dominance is reduced significantly, while passivity and submissiveness is increased. A shift occurs in the mind, transitioning their thoughts, demeanor, and inner identity into that of a woman. How this occurs is unknown.

There are other effects that diverge significantly among sissies. More than half experience a reduction in penis size. Regardless of penis size, half experience shrinking of the testicles, while the other half experience growth. Due to the hormonal changes, sissies do not experience involuntary erections. Many experience total loss of erectile function, while many others do not.

Surprisingly, less than one percent of sissies may actually experience an increase in penis size. In extremely rare cases, this growth can even reach the scale of a futanari penis. These lucky few also have testes sized to those of a futa, and have their bladders converted into secondary prostates.

As a side-note, all trans women who were not converted into futas experienced changes similar to those of sissies. However, these changes occurred during along with everything else in 2026 and were not caused by exposure to futa semen or milk. The similar process is still worth noting.

In exceptionally rare cases (less than a hundred worldwide), a man can experience the opposite of sissification. These 'super-men' become taller, stronger, and more masculine with repeated ingestion of futa semen. Their sexual equipment grows to be more like that of a futa, and their bladder is converted into a secondary prostate. Why this happens is not known, but some have noted that these men tended to have been strong allies to women before the change occurred. These reports are unverified.

Another side effect that is not universal is addiction. This occurs in roughly forty percent of sissies, ten percent of men, thirty percent of women, and five percent of futas. It is extremely rare for milk to cause this effect, but it is possible. To those susceptible, addiction can occur in one of two ways: general or binding. General addiction occurs when addiction is caused by futa cum from an array of sources.

Binding addiction occurs when one futa's semen is given to a would-be addict exclusively over period of three-to-four weeks. Both forms of addiction cause intense daily cravings for futa cum, needing a dose at least every twelve hours to avoid withdrawals. Withdrawals cause discomfort, anxiety, loss of appetite, and near-total loss of inhibitions. An addict in withdrawals can think of nothing else except for futa cum and will do anything to get their next fix.

Typically seen in cum-addicted sissies, a rare effect may occur: an inability to digest food. Stricken individuals are able to eat nothing else except for futa cum and milk. In the case of bound addicts, they are complete dependent on the futa who bound them for sustenance. In even rarer cases, a condition may occur wherein an addict is unable to eat orally whatsoever and can only attain sustenance through anally ingesting futa semen. There is a single documented case of a self-bound futa with an abnormally long penis, who can only eat through ejaculating into her own anus. She is malnourished but reports a positive experience overall.

Returning to the changes that occurred on the day in question--nearly all trans men gained bodies that more aligned with those of cis men. This included a loss of breasts and female organs, and the growth of male organs. Most experienced a change in their height, musculature, and overall build as well.

All humans received an increase to their intelligence. Futas received more of a boost than everyone else, with an average increase of thirty-to-forty IQ points. Everyone else gained a more moderate ten-to-fifteen points.

All futas also gained a wholly new way that their musculature and bones function. Without any change to muscle mass, the average futa is noticeably stronger than the average man. A dainty-looking futa with no visible musculature can outcompete a typical male college-athlete in any sport and can bench-press over four-hundred pounds. More athletically inclined futas easily put the Olympians of the past to shame, without ever appearing particularly strong.

It wasn't immediately obvious, but human lifespans also increased drastically. The futanari lifespan is now naturally three hundred to three-hundred-fifty years, while the average non-futa lifespan sits in the middle of the two-hundreds. Almost all this time is spent with the health and appearance of prime-adulthood, only tapering-off into being elderly in the last couple of decades.

Initially, more than half of all women growing penises looked like it would threaten the population of non-futa women. It soon became clear that it was men who would gradually become extinct. The offspring of a man and non-futa woman has a twenty percent chance of being male, fifty percent chance of being female, and thirty percent chance of being futanari. Between a futa and a woman, it has a sixty percent chance of being futanari and a forty percent chance of being female. In the off chance a man impregnates a futa, their offspring has an eighty percent chance of being a futa, fifteen percent chance of being female, and five percent chance of being male. Between two futas, their offspring will always be futanari. Over the generations, futas are likely to overtake the other sexes completely.

Human reproduction changed in other ways as well. All humans gained the ability to consciously turn their ability to reproduce on and off. Turning it off takes effect almost immediately, while turning it back on takes three days, and can be aborted at any point during that period. That means accidental pregnancy became a thing of the past. For pregnancy to occur, both partners must consent and have three days to change their mind. During that fertility period, sex is almost guaranteed to result in pregnancy.

Along with this, the menstrual cycle was eliminated. Women and futas have stable hormones and only shed their uterine lining in the rare case that they leave their fertility-window on for a full month without conceiving. In those rare cases, they simply resorb it for nutrients without bleeding. Meanwhile, many of the effects of ovulation are constant, and not dependent on a cycle.

Pregnancy and birth are now a much more pleasant. There's almost no discomfort or sickness during pregnancy, and birth is painless. Oftentimes, giving birth even induces indescribably powerful orgasms. Pregnancy typically causes women and futas to gain two cup-sizes during pregnancy, and only one-cup is reduced afterwards. Futas also gain two inches in penis-length during pregnancy and keep one afterwards.

These permanent effects only occur for the first three pregnancies. That means a futa who has given birth three times will usually have three extra inches and cup-sizes but won't gain any more with additional births. During additional pregnancies, they will still gain the two temporary cups and inches, but without the permanent gains. Still, a futa who began well-endowed will be hyper-endowed with five extra inches on her fourth pregnancy, as well as all subsequent pregnancies.

While pregnancy doesn't cause discomfort of illness, it does cause constant and extreme sexual arousal and sensitivity. To some, this is considered the one drawback. To others, this is the most appealing part of the process.

A futa is capable of something that other humans are not: parthenogenesis. By activating her fertility and inseminating herself, a futa can become pregnant with a genetically identical clone of herself. This clone, of course, will be their own individual, albeit one with the same genes as her mother. This process is much more likely to produce identical twins and triplets than other pregnancies do, although the reason for this is unclear.

Broad societal improvements followed the physiological changes. The adoption of human milk as a staple not only made starvation a non-issue, but it had knock-on effects as well. The dairy industry plummeted overnight.

Without needing cows for dairy, there was no economic incentive to breed cattle. Veal rapidly disappeared from human diets, and beef slowly followed. Eventually, the population of cattle plummeted, relegated to nature preserves and the rare small family farm. With that simple change, more than ten percent of the world's greenhouse gas emissions ceased.

This barely scratches the surface of the turn the world took. Human intelligence was sharply and measurably increased. What wasn't measurable was the general increase in compassion and empathy. A brilliant futanari took office in the January following the change. Around the world, elections had similar results.

The world's new futanari leaders found that they had inherited systems plagued with unconscionable human right's violations. Life-saving care was denied, housing was hoarded while human beings slept in the streets, water sources were stolen or even knowingly poisoned, children were enslaved, people were forced to work to the bone while living paycheck-to-paycheck--all for the sake of profiting an insidious few. They could not allow this to continue.

Everything required to live a modest, but reasonably comfortable life became was recognized as a human right, provided to all people by default. Thriving to build something beyond that became what work was for. Without the imminent threat of homelessness and starvation, people could spend their long lives enriching their minds with education, as well as exploring vocations to find work that they could be passionate about.

The general increase in libido necessitated a lot more leisure time than people had prior to the change. People spent fewer hours working, and a lot more hours enjoying life. Most of that free time was spent having sex or masturbating, though--especially among futas.

With an intelligent populous with the time and freedom for education, and a general attitude of cooperation, technology took big leaps. High-speed railways connected the entire planet within a decade. In that time, humans landed on Mars and built a base on the moon. War and genocide became subjects of study, rather than everyday realities.

Truly, this is a time of wonders. Who can say what marvelous adventures may await, in a Life After Futas?