Equine Genome Fusion
by Kora

Clipboard in arms, Jake watched as Dark Sigil guards unloaded the next truck of human test subjects. The scientist sighed, adjusting his glasses, feeling a slight hint of remorse for the dozen fright filled men and women who had no idea what was in store for them. What Dark Sigil aimed to accomplish was for the betterment of the human race, or at least that's what Jake believed. Deep down, he knew what they were doing was wrong, and every time a new load of subjects were brought to the facility, he couldn't help but feel sorry for the people. A few of the subjects were slaves purchased from the Brazos region, evident by the rags they wore and the marks left on their wrists and ankles from their shackles. But healthy and specimen worthy slaves were pricey, so Dark Sigil often had people abducted and brought to their facility.

"Feeling uneasy again?" whispered Gwen, a fellow researcher. Jake turned his head to Gwen and nodded. "Yeah..." he replied, facing back to the test subjects, now being sorted and guided to their cells. "Seeing their faces for the first time always gets me." Jake continued. "Don't let it get you down. You've made some good progress with your research, more so than I have," commented the half calerian, nudging Jake with her hips. "It looks like they're just about done sorting the subjects. I should go inspect my group. You should probably start working on yours," Gwen said, pivoting on her high heels and heading towards the group of male subjects. Jake turned his head towards Gwen once more, catching sight of her petite hips clad in a tight skirt swaying to and fro with her long blonde tail swishing with each and every step. Smiling, Jake nodded and made his way towards the containment cells for the female subjects.

Inside the containment ward, the guards finished cleaning, clothing, and placing the women in each of their cells. Jake walked up to each of the cell walls and inspected them through their one way mirrors, taking note of their appearance and behavior. Each woman had been given a numerical code name, X to symbolize their gender. Judging by their cleanliness and erratic behavior, subjects X-6, X-8, X-9, and X-10 all appeared to have been citizens that were abducted. Subjects X-7, X-11, and X-12 were clearly slaves that Dark Sigil purchased considering both their physique, bodily hair, and sloppy haircuts. Jake made his way back to observe X-6, a woman who was likely in her late 20's or early 30's with tears running down her face. She had been crying and intermittently yelling out, but the containment cells were almost completely sound proof to help prevent panic among the other subjects. "Guards, where are the documents for this woman here?" Jake asked, gesturing to X-6. A large burly man with a scar across his cheek stepped forward, dressed in a thick padded suit, and handed him the documents.

Name: Linda Bruhees
Sex: Female
Age: 29
Children: None
Provincial Residence: Janwyn
Occupation: Librarian

"Seems that this subject is ideal for our next experiment. Looks like our colleagues in Janwyn got their hands on another prime candidate." Jake said aloud as he continued to read through Linda's health documents. He looked up from the documents he had pinned to his clipboard and back up at Linda. The woman was clearly in good health. It was obvious from her full figure, generous hips, and large breasts that Linda is in her prime for breeding. Tucking his clipboard under his arm, he signaled to the burly guard "Prep this one for genome fusion, and let me know when the subjects are in place". The guard nodded, and as he made his way to X-6's cell door, Jake exited the containment ward to prepare for the experiment.

A half hour passed, and Jake received message indicating that X-6 was ready to proceed with the experiment. Jake acknowledged and left his lab, taking a slight detour through the experiment observation ward. The inside of the ward was not much different from the subject containment ward. The hallway was lined with one-way mirrors, heavy cell doors, and speakers to communicate with the subjects inside. What did differentiate the experiment observation ward and subject containment ward is the former had a more generous supply of food and water, the cells were larger, and of course the subjects that resided inside each cell. The subjects had been labeled "Equine Genome Fusion, X-#", or EGF X-# for short. Jake made his way to the first cell, labeled "EGF X-4". This was the fourth experiment that Jake had directed, and even though it ended in colossal failure like the first three, it was the first experiment deemed useful enough to not dispose of.

Jake stepped in front of the one way mirror and laid his eyes on a grotesque blob of human and equine flesh that had been horrendously merged together. The creature inside had once been three separate organisms. Human limbs melted and fused to a shapeless mass of equine tissue wriggled and writhed, occasionally grasping at the air. Jake placed his arm on the glass and rested his forehead, closing his eyes, silently wishing X-6 be successful. Opening his eyes and looking back up at the creature inside, Jake gazed deeply at one of the two distorted human faces that was fused with the former stallion's body. It was bad enough when X-4 was absorbed into the mutating horse, but watching as the creature forcibly assimilated his research assistant as she attempted to gather samples from it is still something that haunts Jake to this day.

Jake moved towards EGF X-5's cell, thinking to himself that while the accident that cost him his assistant was regrettable, at least sperm samples were successfully collected from EGF X-4. Those sperm samples had been used to artificially inseminate test subject X-5. Inside EGF X-5's cell was a young foal growing healthy and strong. The foal, however, had merged with his mother's reproductive system and various other organs during the zygote stage of development, and as the zygote matured, it started to grow from his mother's flesh, horribly distorting and disfiguring the mother's body as she grew with the foal. EGF X-5, while a failure, was the breakthrough that Jake was looking for to prove it's possible to splice and breed human genomes with the genomes of otherwise incompatible species. Taking in all that he needed, Jake finally started making his way towards the genetics lab to observe what he hoped would be a successful inter-species reproduction between X-6 and a stallion.

As Jake walked, he mulled over in his mind what he had been aiming to achieve. When Jake was still just an assistant, he had been told that over a thousand years ago mankind was at war with a race called aurexians. Mankind was easily decimated, in part due to technological differences, but largely due to being physically inferior to aurexians. In a last ditch effort to save mankind, arks were built and dispatched into space. All of the humans residing on Caleria came from one such ark that had crash landed in one of Caleria's oceans. Some of the crew of that ark formed the beginnings that would eventually become Dark Sigil. Rumor has it that the current leader of Dark Sigil is from that crew, but Jake simply could not believe that to be the truth. Regardless, one of Dark Sigil's many goals is to break the barriers between different species to force mankind to evolve so that they never suffer the same fate as their ancestors.

Gwen greeted Jake in the genetics lab. "You ready?" she asked, her tail flicking with anticipation. Jake let out a deep breath and nodded. "The modifications we made to EGF X-4's semen should prove to make it more stable," Jake replied, checking the documents on his clipboard. "But Jake, wasn't one of the modifications you made to the semen is giving it properties similar to our genital fusion formula?" Gwen tilted her head curiously. "Yep, but the problem with the genital fusion formula is that genomes between the two organisms don't combine. Since EGF X-4's sperm can be used to breed a foal from a human female, in theory it's possible that fusing human mass with stallion genitals using the sperm augmented with the genital fusion formula could produce the results we've been after all this time."

The genital fusion formula has been around for a long time, far longer than Jake ever having worked at Dark Sigil. It was commonly used to massively boost the breeding potential of animals, especially the endangered animals that traveled across the skies in the ark that transported mankind to Caleria. Use of the formula was illegal in most territories, except in the case of sentencing the worst of criminals. But for Dark Sigil that operated in the shadows, in between the boundaries of the major continents, it is a commonly used formula due to its overall potential.

Jake pressed the release button on the control panel before him. In the other room on the other side of the one way mirror, Linda lay helplessly strapped to a mounting post, naked, and fully exposed. She could hear a large slowly open behind her, which was followed by the sounds of a clearly hot to trot stallion clopping towards her. Linda's vagina had been rubbed down with a fluid that made her smell like a mare in heat, and the stallion himself had already been injected with the new concoction developed by Jake. Without a moment's notice, the stallion mounted Linda, his aim true, and plunged deep inside the woman. For nearly a minute, the stallion thrust violently as he humped his mate. Despite Linda's cries, the stallion distended her abdomen more and more with his large penis. Unbeknownst to Linda, the more her body received the stallion's precum, the more permeable her flesh became. Finally, as the stallion was nearly balls deep, his penis had started to visibly throb and pulse, releasing his seed inside Linda.

Rather than the cum spilling from Linda's folds, her vagina formed a seal around the hilt of the stallion's penis. The large reproductive rod suddenly melted and merged with Linda's innards, and her flesh crept up along the stallion's genitals, fusing them together. Linda's hips sank inside the stallion's groin, and her flesh shifted and changed, forming the beginnings of the stallion's new sheath. Her legs curled and fused with the stallion's testicles, and her arms rapidly melted into her torso. The pulsing that had once been the stallion's penis transferred to Linda's half cockified body. The woman gagged at the taste of horse semen flowing into her mouth from deep within. Her body continued to distend and disfigure, her organs melting away into nothingness, her voice slowly becoming mute. Linda's malformed torso lifted from the mounting post as the stallion tensed, and a rush of cum ejaculated from her supple lips.

Content, the stallion dismounted from the mounting post and dragged Linda with him. The half transformed woman slapped against the ground with a resounding thud. For a moment, Linda laid there on the cold floor, her former body dangling between the stallion's powerful legs. Her eyes raised to the one way mirror, and in horror she laid witness to her predicament. From the waist up, Linda's body almost fully retained its original appearance, albeit missing both arms. But at her waist, her skin formed into the stallion's medial ring that lead into a thick, meaty penile hilt. The woman screamed silently, crying, tears rolling down her cheeks.

"Odd that she didn't fully transform," Gwen commented. "It can't be helped. The new formula was largely untested, and EGF X-4's sperm has been proven to be somewhat unstable," Jake replied, notating his observations on his clipboard. "Regardless," he continued "As long as X-6's genomes successfully fused with the stallion's, and the stallion is able to produce a hybrid offspring, then I'd consider the experiment to be successful." Finishing up his notes, Jake turned and said "We'll give the stallion 24 hours to make sure the formula is out of his system. After that, prepare a modified breeding mare." Gwen's eyes went from Jake and back to EGF X-6 and watched as the stallion's penis slowly retracted into his sheath, the medial ring rolling over X-6's wracked face before completely pulling her inside his groin. "Got it," Gwen replied.