Futa Force Ch 01

This story contains futanari, Futa/F sex, BE, AE, Penis Expansion, cumflation

When the rift first opened most people assumed the end of the world was nigh. Demons began pouring forth to ravage the world and bring the time of humanity to its end. But the people of Earth refused to go quietly. A Coalition of nations was formed with the foremost experts on every field imaginable at its heart. New technology was developed at an astounding rate and as demons began to fall by the dozens and then hundreds, the demonic technology was reverse engineered and used to supplement the Coalition's might.

Instead of winning battles and burning cities the demonic army was now in full retreat. Having been beaten back by the humans on every front they now retreated back to the rift into hell, suffering immense losses on the way. Humanity celebrated its victory over the demons, but the rift didn't close.

The demonic rift was studied extensively after the demon armies departed. Attempts were made to send probes through but it seemed that nothing was able to pass through the dimensional rift. Attempts to destroy it were made as well using all manner of explosives and other weaponry but nothing had an effect on the portal. The only logical conclusion was that the rift could only be closed from the other side and that since it hadn't been closed as of yet, the demons were planning to return.

A permanent garrison was established to guard the rift and keep a 24/7 watch for the inevitable return of the demonic hordes. The demons, of course, did return but when they did, a new strategy was employed.

It wasn't until months later that an energy surge was detected at the rift, likely signaling the start of another invasion. This time, however, instead of a demonic horde swarming forth a single figure strode out from the rift. The lone demon had a body resembling that of a human female with the exception of her horns and a thin tail that she twirled with her hand. Her skin was a pale purple and her eyes a deep red.

She was over six feet tall and had enormous breasts easily the size of watermelons. The numerous soldiers looked on in bewilderment, unsure if they should blow this intruder away or not. Unbeknownst to them, the fight was already over.

Within seconds the closest soldiers were overcome with intense lust and dropped their weapons in favor of stripping down to make love to the demon invader. The succubus grinned as she grabbed the nearest soldier and threw him to the ground before mounting him. He came seconds later, the succubus' demonic pussy quickly draining him of his essence. More troops began crowding around the demonic slut, eagerly waiting their turn to ram their cocks into her pussy or ass.

The succubus groaned happily as more cocks blew loads into and onto her. The soldiers collapsed after they orgasmed, drained off their life essence by the lustful demon. The female soldiers resisted the aura of lust emanating from the demon slightly longer than their male comrades but were eventually overtaken all the same and soon joined the growing orgy.

Miles away in the secure bunker below Coalition headquarters the top generals and scientists argued over the best course of action. An orbital strike had already been ruled out due to the collateral damage it would cause. Snipers didn't seem to be an option either since every time a sniper got the succubus in their scope they were overcome with lust and became unable to pull the trigger. The satellite feeds had revealed another disturbing fact: the succubus was growing.

Over the past hour or so she had grown from just over 6 feet to well over 7, with her overgrown tits and ass ballooning bigger as well. The range of her lust aura seemed to be increasing with her size too, which meant they were on a time limit to deal with her before the whole planet fell under her spell.

"Just nuke the bitch and get it over with!" The general slammed his fist on the table angrily.

"We'd be killing our own troops and we don't even know if that will kill her!" The chief of defense was growing tired of this argument.

"They're dead anyway! Her range is increasing and if we don't do something we'll all be sucked dry by that demon whore within a week's time!"

"I won't be responsible for killing hundreds of our own people!"

"You'll be killing millions instead if you do nothing!"

The doors slammed open and a frantic assistant rushed into the room. He hastily saluted, "Sir, it's Dr. Luna. She's requesting permission to deploy her test subject. She believes this is the exact scenario she's been preparing for!"

The general rolled his eyes and huffed angrily. The chief ignored him and addressed his assistant. "She really believes she can stop this thing?" He pointed at a monitor showing the succubus continuing to fuck the life out of dozens of soldiers at once.

The assistant nodded, "Without friendly casualties and minimal collateral damage she says."

The general laughed, "Bullshit! Her project is a load of nonsensical witchcraft and we all know it!"

The chief rubbed his temples and sighed. "Tell the doctor to deploy her subject." He turned to the general, "If she fails, we drop the nuke."

The assistant rushed out of the room as the chief turned to watch the video feed. "God help us all if she fails."

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Doctor Luna Suarez sat at her desk sipping coffee as she reviewed her research notes. Before the rift had opened, Dr. Suarez had been a rather unknown geneticist whose specialty had been human augmentation via genetic alteration and enhancement. It was a mostly theoretical field seeing as very little was actually known about how to safely and effectively alter a human body via gene splicing and similar methods.

There were ways to perform gene therapy on an unborn child of course to minimize the chances of hereditary conditions and the like, but Luna always wanted to think bigger. The doctor had been studying for years, determined to find a way to augment a person's body after they were an already grown adult. She had made little progress, that is, until the demons arrived.

Luna had been one of the first scientists recruited to join the Coalition's growing science team. She had been tasked with analyzing the demon's DNA and potentially utilizing it to make super soldiers. All attempts at creating a traditional super soldier had failed however and Dr. Suarez had been relegated to simply studying the demons in general. Over time Luna became something of an expert in Demonology, an obviously brand new field of study.

As more demon corpses and weapons were recovered from the aftermaths of battles so too were other demonic relics and artifacts that the invaders had brought with them. Luna quickly deciphered the demonic language and had begun learning a great deal about their culture and their goals... and also their weaknesses. She had also discovered something else. Something far more strange and sinister than anything she had yet seen.

It seemed that the demonic hordes were ruled by a caste of exclusively female demons known as Succubi. While the average, lesser demons tended to be brutes who favored overwhelming force as their main tactic for conquest, the Succubi favored a different strategy. It seemed that each Succubus had the power to drain an individual's life force via sex or, more accurately, by simply making them orgasm in close proximity to the Succubus herself.

The Succubus gave off an overpowering aura of lust that made even the most hardened soldier weak to her charms. Anyone even looking at the feminine demon would quickly lose control and give in to her desires, which were always sex related. The Succubi's power would grow as she absorbed energy and her aura of lust could rapidly engulf even an entire planet.

A single succubus could eradicate a planet within weeks as she grows stronger with every load of cum that she forces from her victims. Succubi were also, it turns out, far more resistant to common weaponry than even their bloodthirsty brethren. Anyone who attempted to destroy a succubus using overwhelming force would inevitably kill many of their own troops and likely not even kill the succubus in the process.

Luna had brought this knowledge to the Chief of Defense and his generals but had been thoroughly rebuffed. They thought she was crazy. Why would an enemy with as much power as these demons ever resort to some kind of insane tactic like fucking their enemies to death? Luna had a hypothesis: the demonic hordes were a bait and switch. The demons expected their enemy to withstand the initial assault and then, when they inevitably grew cocky, the Succubi would arrive.

Luna believed the entire purpose of this invasion, and likely many others throughout the cosmos, was to pave the way for a succubus to absorb the lives and sexual energy of a planet's inhabitants. Brute force couldn't defeat this enemy. You fight overwhelming force with overwhelming force, so what do you fight overwhelming sexual power with? Dr. Suarez had created her answer.

Luna glanced over at the monitor showing the camera feed of her test subject and bit her lip. Her budget had enabled her to create one successful subject: a human-demon hybrid, the perfect weapon against the Succubi. Luna blushed as she watched her magnum opus, a woman named Selina, thrust into a hole in the wall of her room. There was little about Selina that would make anyone think she was part demon apart from her violet eyes... and her two foot long cock.

Selina grunted in pleasure as she slammed her dick into the specialized onahole in the wall. Her heavy, melon sized balls smacked the wall loudly with each inward thrust. Luna slipped a hand into her pants as she watched the futanari fuck the wall with increasing vigor. The first few subjects had been failures, too much demonic DNA had led to undesired mutations and driven the subjects mad.

With Selina, Luna had used a new approach that involved enhancing the subject's natural lust and libido to its absolute limits before splicing in demon DNA. As a result, instead of being overcome by the demonic enhancements, Selina's body embraced them and used them to drive her lust and sex drive to even greater heights. Mutations still occurred, of course, but this time they were only the ones that Luna had intended. Selina grew taller and her breasts and ass grew larger while she sprouted an impossibly large cock and balls below.

Luna stifled a moan as she rubbed her clit. She had done all this to help humanity and stop the demons, but that didn't mean she couldn't enjoy the fruits of her labors as well. She gasped as Selina climaxed, an explosion of cum erupting from her cock as she did. Each orgasm seemed bigger than the last, Luna was beginning to doubt whether they would be able to contain Selina if her lust kept growing. All thoughts of the future left her however when she reached her own orgasm, soaking her panties in the process.

Selina grunted as she pulled her cock from the onahole, a cascade of cum flowed out of it once her gigantic dick was no longer plugging it. The futa's body glistened with sweat and her still rock hard dick leaked cum. Luna couldn't believe how perfect a success she was, the doctor was about to start rubbing herself once more when a knock at the door startled her. She quickly turned off the monitor and made sure she looked presentable.

"Come in!"

The flustered assistant rushed in, clearly out of breath from running across the complex. "The Chief says it's time! You can deploy your prototype immediately!"

Luna grinned, "About damn time! Tell him to have a shuttle ready, I can have her deployed within the hour."

The assistant nodded and took a deep breath before once again running off. Luna flicked the monitor back on and was unsurprised to see Selina once again fucking her wall mounted onahole. She pressed the intercom button on her desk, "The time has come Sel! How would you like to put that dick to work on a real pussy?" The futa paused her thrusting and looked up at the camera with a gleeful look.

"Let me bust this nut real quick and then I'll be ready! Wouldn't want to get too pent up on the ride over." The futa resumed slamming into the wall with renewed vigor, obviously aroused further by the idea of finally being able to fulfill her true purpose. Luna smirked knowingly and began to gather her things, she would need to document this test run of her project after all.

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The remote operated shuttle screamed through the sky as it sped towards the rift at Mach 6. Dr. Suarez was briefing Selina on the situation via long range communications. "She's grown steadily over the past few hours. Intel states she's nearing ten feet tall at this point and her lust aura has expanded to ten miles in diameter by our estimations. Pretty soon the entirety of the nearest city will be joining in on her orgy and we expect things to get exponential at that point with her size and aura increasing at an unstoppable rate."

Selina couldn't help but get aroused upon hearing all this. "It's a good thing you made me then! I'll fuck this bitch so hard she won't know which way is up when I'm done with her."

The doctor chuckled, "If I did my job as well as I think I did then you're probably right. If all goes well you should be functionally immune to her aura. Instead of making you a mindless sex slave it should just make you even hornier than you usually are."

Selina's cock jumped at the prospect of becoming even more impossibly horny than she already was all the time. This would be a true test of her sexual abilities and a chance to prove that, despite everything, she was still human and would fight to her last to protect her home.

The shuttle touched down at the edge of the rift regiment's staging ground. Luna nodded at her former test subject, "Good luck!"

The ramp opened and Selina strode out to meet her foe. The futa was entirely naked, no point in wearing a uniform when she was just gonna tear it off shortly after landing anyway. As soon as she stepped out of the aircraft her cock sprang up to full mast. The air was permeated with the succubus' lust inducing pheromones.

Any regular person would've been overcome in an instant and made into a near mindless sex slave, eager to give their sexual energy, and their life, to the succubus. Dr. Suarez had been correct though, the lust aura was simply making Selina hornier than she had ever been in her life. The futa gasped and moaned as her cock grew harder still and even gained a couple inches in length. She needed to fuck. Now.

Selina walked towards where she sensed the origin of the lustful aura to be. Her demonic DNA allowed her to sense the succubus' location as though part of her very being was desperate to find her prey. Selina rounded the corner of a pile of rubble and spotted her quarry. The intel had clearly been outdated. The succubus was approaching twelve feet in height with breasts the size of cars and an ass as big as a tractor.

The monstrous female demon was kneeling down, surrounded by dozens of people. Selina could see at least three men between the demon's soft thighs, thrusting away at her huge pussy and another four wedged deep between her ass cheeks obviously fucking her other hole.

A dozen women rubbed and humped at the succubus' supple curves, moaning and squirting as they orgasmed again and again. When one collapsed after being drained of their life essence another two took their place. The deadly orgy continued to grow bigger.

Selina's cock leaked precum as it throbbed. She had never been this hard before. The pheromones were more concentrated so close to the succubus, it was almost enough to make the futa lose control. Almost. She steadied her breathing and steeled her resolve, time to end this bitch.

Selina flexed her cock, launching a massive glob of precum towards the giant demon. The succubus paused and sniffed the air. She turned towards Selina with a manic look on her face.

"My my, aren't you a fertile one!" The succubus shooed away the people fucking her, putting her full attention on this newcomer. "I didn't think anyone on this pathetic planet had as much sexual energy as I'm sensing from you." She eyed Selina's throbbing cock and licked her lips. "You might actually fill me up too... at least until I drain you and grow again! I may actually enjoy sucking you dry!"

The ground shook as the twelve foot tall succubus approached Selina in a few long strides, her ass cheeks and tits clapping loudly in tandem with her steps. Selina was taller than the average human woman, over six feet, but she felt minuscule compared to this massive sex demon. The succubus's pussy was huge and leaking gallons of sweet smelling lubricant onto the ground and onto her thick thighs.

A wicked grin was plastered on the demon's face as she grabbed Selina and lifted her off the ground. Selina let out a soft moan as her diamond hard cock deposited a large glob of precum into the succubus' cleavage. The succubus chuckled and ran her long tongue along the two and a half foot length of Selina's cock. The futa shivered as more precum poured from the tip of her dick, much more total volume than a full blown orgasm from a regular cock.

The succubus moaned seductively and took the melon sized head of Selina's dick into her mouth. Selina's yoga ball sized nuts gurgled and swelled even larger as her cum production increased further. The succubus hummed in approval as she saw Selina's cum factories bloating bigger. She tightened her grip on the futa and shoved the entire length of the nearly three foot cock down her throat. Selina gasped as she watched the demon's throat bulge from the tree trunk thick dick she was swallowing.

The succubus looked into Selina's eyes as her lips reached the futa's pelvis. The demon winked and then pulled Selina back until just the tip of her fat cock was still enclosed between the plush demon lips. Selina groaned. Untold pleasure washed over her as the succubus began pulling her back and forth, fucking her own mouth with the futa woman's massive cock like it was a toy.

Selina's balls slapped against the succubus' chin at first and then began clapping against the demon's bouncing tits as they bulged ever bigger with cum. Selina's lower body was quickly coated with saliva as she was forced to mercilessly throat fuck this demonic whore. The succubus' saliva had the consistency of lubricant rather than actual saliva, just another sign that this creature was built purely for sex. Selina gasped and moaned as she felt herself growing closer to orgasm.

She had never gotten a blowjob before, her cock obviously much too large for any human to take orally, or in any hole for that matter. The succubus clearly noticed as she sped up her blowjob. She hummed again, causing vibrations to flow through Selina's dick in the most pleasurable way.

"Ohhhh fuuuuuucck!!" Selina cried out in spite of herself. She felt her cock stretching longer and thicker as she approached an explosive climax. Her tractor tire sized nuts rumbled as her cum production increased even further. "Yes! Yes! YES!!"

The succubus hilted Selina's cock in her mouth, her lips forming an airtight seal so as to let not even a single drop of cum escape. Selina nearly blacked out as her dick exploded. A hundred gallons of cum blasted into the demon's stomach within one second of Selina's orgasm. Two hundred gallons the next second, then three hundred and on and on as the futa blew the biggest load of her life.

Selina grabbed two handfuls of the succubus' hair and held tight as she rode her orgasm for a full minute, then two, then five. The futa could barely comprehend the heights of pleasure she was reaching as her orgasm held strong into its ninth minute. Thousands of gallons of cum stretched the succubus' stomach bigger and bigger.