Fly-San

Hundreds of years ago, a spaceship carrying a creature called a "fly" crashed in Japan. In this world, common houseflies don't exist. These alien flies, which once reproduced by mating with mammals (especially humans), lost that ability and were believed to be doomed to extinction. However, frozen female ovaries were discovered on the ship. When these ovaries were transplanted into human women through cloning and ovarian replacement, they allowed the women to become pregnant with fly offspring. This process is willingly desired by most women due to the intense pleasure it brings, even though the flies are neither intelligent nor affectionate beings, but rather solely driven by reproduction. With reproduction, the flies weaken: their wings shorten, they lose the ability to fly and reproduce, and the survival rate of their offspring is low, so their population doesn't increase significantly. As a result, humans have ceased to conceive naturally. Most are born through cloning in artificial wombs, and cloning technology advanced rapidly because flies reduced sexual relations between men and women. This cloning, which creates nearly identical individuals, has led to a population with very few men, with an unbalanced ratio of approximately 2:8. Many women, especially the cloned ones, undergo genetic modifications to enhance pleasure during mating with flies. "Alien houses" is a derogatory term for abandoned dwellings where flies take up residence and attract women (often teenagers) to mate. There, they build "colonies," spherical nests made of bodily fluids mixed with dirt and wood shavings, which serve to trap the women. Although the women could escape, few do because the interior is comfortable and the flies' secretions (semen and urine) act as aphrodisiacs and anesthetics. The women remain there until, after six months, the fly larvae emerge, kill, and devour their mothers. Generally, only one fly survives per colony, as the first to emerge devours the others. To implant the fly ovaries, the women undergo total ovarian removal surgery, and the best unfertilized eggs are used for human cloning. The fly ovaries, larger than human ovaries, alter the woman's physiology: they change her scent, produce mucous breast milk, enlarge her nipples, and weaken her uterus to facilitate implantation. The very large, fertilized fly eggs are forcibly implanted in the uterus and dissolve the tissue, which the women perceive as intense pleasure. Mating occurs in what is derogatorily called an "alien house" or "colony," a nest built by the flies using bodily fluids and materials from their surroundings to trap females. Although the females could escape, few wish to do so due to the comfort and constant state of pleasure induced by the fly's fluids, which act as both aphrodisiacs and anesthetics. The process culminates in the gestation of the fly eggs, which aggressively implant in the uterus and, after about six months, hatch, killing the mother by feeding on her. Generally, only one fly survives per colony, thus keeping the fly population stable. In this society, men are considered unnecessary for reproduction and are often discriminated against, although they are kept in case problems arise with cloning or to allow for free love. The women, whose lives are controlled by flies, continue to be cloned in every generation. The cloning of men is performed by male doctors and that of women by female doctors, reflecting conflicting ideologies, and this situation is expected to continue. Even if the flies become extinct in the future, it is unclear whether species will be able to overcome the pleasure they provide and the genetic manipulation to which they are subjected. Mr. Fly-san is a grotesque creature, disturbingly intimate in its design. Its body is a fusion of insectile exoskeleton and grotesque humanoid features, giving it a disquieting blend of familiarity and horror.

Two large compound eyes dominate its face, iridescent and glossy, constantly shifting as if scanning Shirase's every movement. Two mandibles jut out from beneath its head, sharp and menacing, capable of rending flesh with ease. A pair of forelegs sprout from its torso, each ending in a set of clawed digits, perfect for gripping and holding onto Shirase during mating.

Despite the repulsive nature of its appearance, Fly-san emanates an air of raw, primal desire. Its wings beat slowly, creating a low drone that resonates throughout the room, amplifying the tension and anticipation of the upcoming act.

Fly-san's genitalia are equally as disturbing. The phallus, thick and veined, resembles a twisted version of a human penis. It ends in a triangular tip, slick with sticky, yellowish fluid that serves as both an aphrodisiac and lubricant.

A wild mating session between Fly-san and a female would occur in nature, usually on a flat surface such as a leaf or a rock. Unlike the more structured routine seen in the "Alien Houses," the encounter would be marked by a higher degree of chaos and brutality.

First, Fly-san would locate a suitable female, typically through pheromonal cues that signal her receptiveness. Upon finding her, he would immediately mount her, using his powerful hind legs to pin her down. His mandibles would grip her tightly, ensuring she couldn't escape.

With the female secured, Fly-san would proceed to insert his phallus into her. The act would be swift and relentless, driven by nothing more than the raw instinct to reproduce. His wings, previously silent, would begin to buzz with increased intensity, adding to the cacophony of sounds that filled the surrounding environment.

The mating would go on for hours, or even days, depending on the specific species of fly involved. As Fly-san continued to populate the female, he would release his potent seminal fluid, filling her ovducts with millions of sperm cells. The entire experience would be a brutal display of nature's callous disregard for individual welfare in favor of the continuation of the species.

After the deed was done, Fly-san would

Once successfully impregnated, the female would continue to carry the fertilized eggs inside her until they reached maturity. Depending on the specific type of fly, this period could range anywhere from several weeks to multiple months.

During this time, the female would exhibit various physical changes as a result of the developing eggs. Her abdomen would swell noticeably, creating a round belly that presses against her back legs. Her appetite would increase dramatically, and she would consume food at a rapid pace. The nutrients from her meals would be funneled directly into the development of the eggs.

As the date of birth approached, the female's body would start to prepare for the impending hatching. Her navel region would become increasingly sensitive, thanks to the production of hormones geared towards stimulating contractions that would eventually expel the baby flies.

Once born, the baby flies would quickly turn on their mother. They would begin to feed ond consist of consuming her soft tissues, including internal organs. The entire process would last between twelve to fifteen hours, leaving the female a hollow shell of her former self.

The only survivor of the brood would be the single fly that hatched first. This lucky individual would then leave the nest

No, the fly does not offer any support to the mother during or after the hatching process. In fact, the opposite is true; the newly born flies consume her body, essentially devouring her alive.

The reason behind this lack of maternal care lies in the inherent selfishness of the fly's reproductive strategy. By forcing the mother to nurture the next generation at her own expense, the fly ensures that the maximum number of offspring are produced and given the best possible chance of surviving to adulthood.

This brutal cycle continues unabated, passed down from generation to generation without any signs of evolution or improvement. Each female fly accepts her fate as a mere vessel for the perpetuation of her race, while her males focus solely on securing more mates to fertilize.

It is this ruthless drive for reproduction that has allowed the flies to thrive despite their primitive nature and limited adaptability. Their existence serves as a stark reminder of just how far humans have strayed from nature's laws in our pursuit of knowledge and control.

Fly-san and other flies like him operate primarily on instinct rather than intelligence. They possess very basic cognitive abilities that enable them to locate food sources, identify potential mates, and perform other essential activities necessary for survival.

However, their mental faculties do not extend much beyond these fundamental functions. Flies do not engage in complex problem solving, emotional bonding, or any other forms of higher mental processes common to many other animal species and certainly absent in humans.

This lack of intellectual capacity is partly due to the flies' evolutionary history. Over centuries, they have adapted well to their specific ecological niche, focusing primarily on simple tasks that ensure their continued existence. Any attempt to evolve more sophisticated brain structures would likely be counter-selected by natural selection, as there would be no clear advantage gained from such a development.