Experimental Success/Mirror-B (Patreon)

The low hum and high pitched beeping of the machines contrasted quite a lot with each other, and it was maddeningly regular. Nothing. Hours, days even, of observation, had yielded nothing of interest. Cassandra, or Cassie to her friends, was a young scientist, full of pep and vigor. Well, young compared to most in her field, as she hadn't yet crossed thirty and yet she was already an accredited xenobiologist. Leading in her field, her thesis had not just been accepted, it had been ground breaking and revolutionary.

But what had all of that gotten her?

A post in some backwards-ass planet, observing a backwards-ass species, hundreds if not a thousand years from the development of space travel, let alone FTL travel. Uplifting species was prohibited, and there was very little to be done for entertainment in Administered Populated World 226.

While she wasn't under a complete no-contact rule, she did still have to remain absolutely hidden from the masses, and that meant there was little she could do. Even if she had the machinery to play god in this little planet... she had even thought about reenacting some of the old movies, maybe find one of the locals with an interest and get it on.

Her crotch felt hot and tight at the thought of it, her pants barely containing the monster held within. Pants and underwear made for women had never been the best at containing her extra bits, but she'd take the proper fit over her hips and thighs that they afforded over the little comfort. Besides, as she looked at herself on one of the currently-off screens, she smiled at her own reflection. Thick thighs, fat butt, nice DDs... even her pearly white smile and the exotic blue and pink hair on top of her head, almost all of her was crafted by advanced aesthetic shaper machines.

But as she turned around and gave herself an once over, legs apart, feet at shoulder width distance, her eyes focused on the bulge that was all natural. She'd been born with it, and it was as impressive as a man-made one, if not even more so.

For a moment, she questioned taking it out and jacking off. Her instruments would warn her if anything required her attention, and the lab was set up as a private space for her to do anything she wanted... there were no cameras, and the association knew proper self care involved masturbation to relieve sexual frustration, there were even guidelines to using the locals for sexual relief...

But she didn't have a disguise suite to disguise herself as one of the locals.

Plus, she turned to the scanner that was looking for unusual individuals of the species.

The locals were damn near sexless. They weren't THAT different from humans. Two arms, two legs... they did have one less toe and one less finger than humans did, and their skin and hair were varying shades of blue, but they were mostly... well, for lack of a better term, they were like what she imagined humans would be like if they never underwent puberty.

They were monogender, or in other words, there were not two sexes and visible differences between them, instead there was a single species and almost all of them looked identical to each other, there though of course there were individuals who presented characteristics incongruous with this. Unfortunately, what this meant was that there were some with very slightly larger breasts, and some with very slightly more body hair than normal, other than that...

No sexy blue skinned space babes or space hunks for Cassie.

When she had heard they were tall blue people, she had almost expected to find herself surrounded by extra sexy amazonian babes and Tarzan-esque hunks.

She sighed despondently. Luckily she did have access to a lot of porn, which someone had given her as a joke on her first deployment, but masturbation had lost its luster weeks ago.

Maybe she was just overthinking it. The aliens could be an acquired taste! Sure, she was more into strong muscles, tight abs, powerful thighs that could crush her head like a watermelon!

She shook her head and stopped thinking about it.

By chance, as she was shaking her head, her eyes caught something, and she rushed to the scanner looking over the populace of the planet, looking for anomalies. It had just logged one, an individual that was fairly different from the rest.

An individual that had secondary sexual characteristics, resembling of a human, but so very... alien. So different. So... uncommon. She left the anomaly catalogue program running but transferred the files pertaining to this one specific anomaly to a deeper analysis machine. Unfortunately the planet was too primitive to have large and easily accessible databases with all the data that Cassie would need, but what they did have was physical documents that a probe could scan.

And of course, she had cloaking technology to get it done.

It took a couple of hours, during which Cassie instead tracked down, found and began to observe the alien in question, moving her mobile research platform, the orbital station her lab was on, directly over the small-ish town that the anomaly lived at.

Eventually, the records came back, and there were a few standing out matters, especially with regards to medical information. Most of the species was reasonably similar to humans in a lot of regards, but as a monogender species, they had their differences. They were all to a degree hermaphroditic, and they had a surprisingly sturdy genetic structure that explained why they were all so similar.

This one, however, was a rather rare mutation. They didn't quite understand it yet, but what they were looking at was their own species' idea of muscular hypertrophy, resulting in a slightly taller and muscular individual, a true and proper blue skinned space amazon. Cassie hummed. The entire species had breasts, small though they were, but this... individual reminded Cassie of herself. A taller, more muscular, sexier version of her at any rate.

It seemed she worked mostly doing manual labor, making use of the great physical strength afforded to her by being about two meters tall and what the rudimentary conversion algorithm suggested was about a hundred and thirty kilograms of muscle. Cassie licked her lips, her hand reaching for her crotch, massaging her cock through the fabric of her stretchy and comfy yoga pants, the growing bulge almost matching the bulge in the blue skinned space babe's worker overalls.

Breasts even bigger than Cassie's. Making some quick math and basing it on her own 38DD, Cassie was guessing that alien... woman? was a size 40DDD or even bigger. Usually, Cassie wasn't particular about tit size, she had never turned down a flat chested woman, but... size did have its appeal as well. Perky, big, sitting on an otherwise slim body made them look even bigger...

Oh, and that wasn't all. Despite, again, size not being everything, Cassie would never allow anyone to call her a size queen, she did still have quite the fondness for big cocks as well, small ones were cute but she'd always preferred when she could see her stomach bulging.

And the medical records weren't lying, Cassie's tongue wet her lips as she salivated over that forty centimeter long cock contained in those overalls...

She had to have it.

And that was why she waited until night to do one of perhaps the greatest hobbies of all xenobiologists. Humans used to joke about anal probings from aliens, oh how the tables have turned, because during the night, she used her instruments and devices to abduct the huge blue woman. As the woman was being transported to the observation room, Cassie made one final effort to read through her file, and noted her name.

She couldn't quite pronounce it, but she got the closest thing to it, the name Gin reminded her of a type of drink, then she went into the observation room. As she passed the woman, she ran a hand along the silvery-blue hair that was threatening to escape from the now messy bun it was set into prior after the abduction. Silky smooth, like the aliens' skin, or even moreso.

Slowly, as the anesthetics wore off, the alien opened its eyes.

Cassie realized that due to her looks, its looks, she was having trouble remembering it was a monogender, and not female, species.

"W-What... what happened, where am I?"

Or at least, that's what the translator whispered into Cassie's ear. Her voice went into a device installed into her voice box, and the aliens' language came out as Cassie spoke. "My name is Cassie. I'm from a world far away," she said. "We've come to observe your people, but I could not help but become enchanted by your beauty," she said. "As part of observation, I wish to test our species' sexual compatibility. Would you like to participate?"

"Am I navigating the ether?"

The program took a few seconds to reorganize. Dreaming. She asked if she was dreaming.

"This is real," Cassie said, looking at the naked blue alien up and down. "If you wish, I will return you home, and you will likely wake up in the morning believing whatever you want to believe if you don't forget this encounter entirely," Cassie said.

"But... why me? I'm... so ugly," the woman said. "So big, burly and-"

Cassie raised a hand to her chest and rested it against her own sizable breasts. "For my species' standards you are astonishingly beautiful," she said. "Enough so that I broke protocol, I'm not supposed to do this for months yet," she said. "Because I couldn't hold back when I saw you."

"I'm... flattered," Gin responded.

Cassie shrugged off her white labcoat and then pulled off her sweater, revealing she wasn't wearing a shirt underneath, playing with her breasts.

The alien didn't blush like humans did, but their skin did turn a darker blue around the joints and her breath did hitch.

Man it was a good thing these aliens were also oxygen breathers, that would've been awkward otherwise.

"I, err- is this safe?" the alien asked.

"Totally. Probably."

Her blank stare reminded Cassie that the species did not, in fact, have eyelids, and their eyes instead had a thin, transparent membrane that was almost invisible unless you were looking for it, that kept them moist without blocking vision. Probably a bit of an annoyance for sleep.

"... o-okay!" the blue amazonian space babe of indeterminate gender spoke. "What do I do?"

"You just lie down there and let me take care of your big ol' cock over there."

Cassie climbed on top of the metal slab the alien was on, and crawled towards her, grabbing the mostly erect cock. Among the similarities with humans were the basic proportions of the cock in her hands, though this one was leagues above the size of the average cock in this world and was in line with the man-made genetically engineered supercocks of the inner worlds. Cassie licked her lips. This was the most important test, this species was deemed as safe to interact and even have sex with, but... well, it was up to her to test if it was satisfactory. Given that their cocks tapered to a point, rather than ending in a flared glans, and had a tube-like structure rather than a slit, she was hoping the exotic structure would be interesting.

And humans cared about few things more than they cared about whether an alien species was fuckable or not, so she had to be... thorough with her testing.

So she opened her mouth, big and wide, as she had learned to, and engulfed the thick blue shaft, as her hands grasped its girth. It was... incredible. It wasn't hot in the way human cocks were, the species' body heat was lower than humans' but... more than that...

It tasted of blueberries and cream. And- she was already cumming?! Wait, not she- it, fuck it!

It wasn't common for Cassie to indulge in someone like her, so whatever, she'd ask how the alien would like to be referred to later, Gin's cock was just too good to think about anything else, and even more importantly, its structure, more similar to a stiff tentacle than a human's penis, made it really easy to suck, and it was flexible as well, sliding easily down the back of Cassie's throat.

Gin didn't have external testicles, none of her race did, unlike Cassie herself, which made it much easier to start fingering her glowing blue pussy. This alien species' sexual fluids glowed in the dark, or at least, they glowed in the dark when exposed to the exact mixture of gases in the observation room. Worth investigating later.

For that moment was consumed by Cassie starting to bob her head up and down and enjoying the almost musical, melodious noises of Gin desperately voicing out her pleasure as she experienced what was probably her first blowjob ever. Their sexual culture was very weird, their idea of foreplay was anal, and they never used their mouths for sexual practices.

They also didn't have an ejaculation, instead- there it was! They would sort of enter a state of perpetual cumming, where their bodies would let their glowy semen equivalent spurt out, the sexual fluid seemingly accompanied by bursts of intense pleasure akin to mini orgasms.

It didn't taste like blueberries and cream, it was a little bit deeper, sweeter than that, human cum contained some amount of sugar, by Cassie's guess Gin's cum was mostly sugar, and it was delicious. Beyond delicious even. It went down easy too.

But alas, despite her objections to it herself, Cassie had to pull back, and she was glad she did, the mournful, soulful whine that Gin let out as the blowjob ended was adorable.

A final spurt of alien cum exploded from the tip of Gin's weird dick, now looking a lot bluer and covered in saliva and her own overflowing glowing purple cum.

Cassie half expected it to be grape flavored given that it was purple, but whatever. She pulled her pants down, under her knees and off of her, leaving her only in her panties, which she quickly fished her magnificent shaft out of, stroking its length.

Licking her lips, Cassie looked down at the panting alien, as Gin looked at Cassie's dick.

"It's so big... it's the only one I've seen that rivals mine... and its shape is... so weird, yet so... enticing," the alien moaned. "What is this..?"

"Hm... I guess humans aren't the only species that likes alien sex," Cassie giggled, as she put the tip of her dick on Gin's wet slit. "I'm going to fuck you so hard right now," Cassie said, "and while I'm doing that, I'm gonna be stroking this glorious bitchbreaker of yours," she added, grasping Gin's fat, slimy and pointy cock, stroking it a little, "with my tits," she said.

"With... your breasts?"

"Yes!"

The translation wasn't entirely perfect, there were nuances that were missed, of course.

But Gin certainly got what was about to happen when Cassie pushed her big fat human cock into that glowing blue alien pussy, natural lubricant flying about and purple cum spurting from the alien's shaft's tip, as Gin once again entered that state of weird perpetual orgasm and cumming.

Much like her huge cock, she had a nice, big and roomy pussy, but by no means loose or bad, no, if anything, she had just about the exact amount of room, and the right shape, to accept Cassie's own third leg into her, and soon, Cassie pushed into that almost cold pussy all the way to its end, so that she could get in position to get Gin's blue cock between her tits, shoving it into place between her tits, and wondering if she should've worn a bra that made this easier.

Whatever, it didn't matter, as Cassie began to move, rocking and swinging her hips, arching her back so that she didn't pull back too far, and using the movements of her thrusting and pulling back to move her chest as well, one hand over her chest, her bicep against one breast and the hand against the other, to keep them wrapped around the slightly cold to the touch shaft.

Hissing as she began to feel Gin's tight pussy wrapping even tighter around her shaft, Cassie moaned and gripped Gin's thigh hard as she began to increase her speed, stroking them faster as well, the spurts of cum coming more often and with more potency, at first just barely making it out of Gin's cock, but now, exploding out of it with sufficient force to hit Cassie's face, prompting Cassie's tongue to lick up what splashed near her lips, to great delight as it was extremely delicious.

She wouldn't last long. She was backed up, needy and had only had her hand for companionship for months.

Cassie didn't care that she wouldn't last long, because she was finally achieving one of her dreams and putting her big fat dick into an alien beauty's tight pussy, and she was gonna seed her! She'd make the first deposit in just a moment, now bringing both hands to her chest and while tightening up all of her muscles below her stomach to try to stave off her orgasm, Cassie brought both hands to her chest and began to stroke Gin's cock with all her strength and speed and furious passion, devouring load upon load of purple delicious cum, until she couldn't hold it anymore, and finally-

She came!

Explosively so! She came the hardest she had in years, maybe the hardest orgasm of her life, no girlfriend or boyfriend had ever made her feel that intense...

She fell down, pinning Gin's cock between their bodies, and the difference in height was just enough that Cassie landed on Gin's tits. She took one of them into her mouth. No areola, but definitely a nipple, the same color as the rest of her blue skin but very slightly lighter at the tip. Thinking little of it, she latched onto the nipple and began to suck.

Fucking strawberry milk came out of her nipple!

Cassie giggled almost drunkenly. "Everything's delicious, beautiful and wonderful about you," she said.

"R-Really? You really think so? I, I think you're pretty great too! It's so hot and gooey," Gin said, "no one's ever made me feel the way that you do," she added, "you, you fucked me so well... it's big and so hard, ngnh, ahhhn, and your smell, it's so strong and, and nasty, I love it..!"

Cassie sniffed. "Ngnh... Yeah..."

"Don't stop..!" Gin mewled.

The xenobiologist didn't intend to.

She adjusted her legs and began fucking Gin while sucking on her tits again, not even bothering to pull out to let the massive amount of semen already inside Gin escape.

Whatever the purpose for their union was before, they forgot it when the second round started...

A couple months later...

Gin had learned what kissing was, and quite enjoyed it. Predictably, her saliva was also delicious, with a taste similar and reminiscent to apple juice, but a little sweeter. Her tongue was long and forked at the tip, and very agile and prehensile, she had taken to using it a lot.

Humans and Rebrians, the name of the species, were not just compatible, they were scary compatible, as it turns out. Luckily, Gin's pregnancy was being supported by the latest in medical technology.

Gin and Cassie's kiss broke, and Gin began moving again. They were fucking in the control room, while waiting for High Command to contact them regarding the legality of their relationship. Gin, as it turned out, was considered extremely ugly and undesirable in Rebria, and was unpopular, unloved, bullied and even tossed away by her own parents. She had no objection when a halfway drunk Cassie proposed matrimony to her, and they'd been living on the orbital research station together since.

Finally, as the two kissed once more, the main screen came to life.

"We received your communication, Operator Cassandra, what is- what the hell is going on!?"

Cassie turned her chair slightly and tilted her head to the left. "Ahoy there, command!" Cassie called. "This is my wife, her name's Gin. Say hi Gin!"

"Hi!" Gin called, doing the customary greeting of the planet, which was actually much like a wave, except with the hand turned on its side. It was closer to the gesture some humans made when there was a bad smell in the room, but over her shoulder instead of in front of her nose. As she pulled back, her prominent pregnant belly became easily visible.

Command was not amused.