Parasitic Repopulation - MTF Alien Parasite TF

The vagina-overtaking parasite from a previous story is back, but this time, the victim is an unsuspecting young man...

This story started a few days earlier, when an alien parasite species started its new life on Earth by creating their first broodmother Queen. For days, this Queen had been rapidly laying eggs, giving birth to new parasites that would proceed to spread their Queen’s message across her home city – and soon, the world.

The baby parasites appeared just like slugs, meaning most humans paid them no mind. They would crawl into the ventilation shafts of homes, get into cracks in the walls, and crawl through open windows to find their targets.

A womb was the preferred target – it was easy for the parasite to crawl inside a vagina, and wait until ovulation. Then, it would squeeze into the cervix, and attach itself to the womb – spreading its hormones throughout the host’s body whilst laying eggs of its own. Whilst the host’s DNA changed, so did the DNA of their eggs – after the parasite’s own eggs had completed their term and the host had ejected them, the host’s own eggs would be used to create a new species.

But this species would need the aid of men to flourish. Women immediately transformed into their new forms when the hormones spread by the parasite would reach a certain level, meaning human men would avoid these ‘monsters’ and ‘aliens’.

The parasite needed to infect men – or any human with a functioning penis, for that matter - to survive.

Finding the correct spot on a penised individual would prove tricky for the parasite – the anus would result in the parasite to get ejected, and the penis had too small of a hole for the slug to enter without being noticed.

The parasite would find that to keep the male from transforming and properly mating with transformed females, it would have to burrow into its brain. But before the parasites learned this, they tried going through the stomach, which had… different effects.

The parasite would slide down the host’s oesophagus whilst they slept, attaching itself to the stomach wall to spread hormones. The eggs the parasite would lay as well as the parasite itself would die, but the hormones would still have an effect that would last a lifetime.

Enter Damian, the first host to be the unfortunate receiver of this… gift. He would not have to give birth to the parasite’s eggs, but he would become the first of his kind.

The sensation of the parasite sliding down his throat woke him up, nauseous and convinced he would vomit. Damian fell out of bed, heaving as he rested on his hands and knees.

Something was wrong – he could feel it. A strange sensation spread through his stomach as the parasite’s mouth bit down onto the tissue lining, beginning to spread its hormones through Damian’s digestive system.

His stomach rumbled, and his penis itched. Getting up proved no use – as soon as he pushed up from the floor, Damian’s world began to spin, and he fell back onto his bed. He lay there, trying to gather his thoughts. What was going on? Had he caught a stomach bug? An STD?

In reality, this was… neither and both at the same time. The parasite’s hormones had set in motion an irreversible change within Damian, one he wasn’t too sure he would like.

The itching in his pants was beginning to subside, making way for a tight feeling between his thighs. Something didn’t seem right about his crotch, and Damian felt compelled to take off his pants to check.

The dizziness made this a rather difficult task, not to mention – something else seemed off about his body. He felt taller, bigger than usual at least – and his fingers seemed slippery, his sweatpants getting stained with what seemed to be sweat as he struggled to pull them down without getting up off the bed. His boxers followed just as strenuously – and Damian had to spread his legs to fully grasp what had happened to his penis and scrotum.

A careful finger slipped between the lips of his newly formed labia, and a pleasured moan exited from between Damian’s ‘real’ lips as he found his clitoris, formerly his penis’s head.

The slippery goo that was oozing from every pore made his hand slippery, seemingly the perfect type of liquid to use as lube. Damian gave his new anatomy a warm welcome as the parasite’s hormones continued to change his inner workings – his testicles changed shape, moving up into his abdomen as sperm cells turned to eggs – leaving this newly formed young woman with an unusually large number of eggs. A cervix and womb formed attached to the vagina Danielle was currently ravaging with her index and middle finger, moaning turning to yelling as she orgasmed.

Her hips ballooned, growing wide and plump as the skin turned grey. Her legs had stopped responding to signals from her brain, as they slowly morphed into one, solid grey limb that would proceed to grow longer, but not nearly as long as the Broodmother Queen’s tail. The Queen wasn’t the only one who would be allowed to get pregnant, like with bees, but she was the only one who was not to ever leave her den and give birth continuously. First to parasites to keep infecting the remaining humans, later to a new generation of followers as the members of her new hive would come from all over the world, treating her apartment as a temple, taking care of her and worshipping the Queen the parasites had chosen to start their new colony with.

Danielle’s transformation hadn’t ended yet – her entire body was now grey and oozing the lube-like substance that might make moving around difficult the first few hours, and her hair had grown long, silky and black. The final adjustment her body would make were the breasts that would grow in long after Danielle had satisfied her lust – they grew plump, soft, round, and perky, with large, suckable nipples. When she awoke, as if by instinct, Danielle made her way to her door, her tail slithering behind her as she did.

This parasite may have failed in its objective to possess a male to procreate with a successfully transformed female, but it had proven something else – any being that came into contact with the hormones the parasite and its eggs secreted, would transform into a female, fertile being that sought nothing but lust and to aid with the expansion of the species.

Soon, the human race would cease to exist, and all of Earth would be home to this new species. There was no stopping it.