Jack Assists an Alien

The Ixaena were going extinct. The outbreak of a foreign disease, imported through interstellar trade, had left them with a population that was largely unable to reproduce. The hope that this would only affect the current generations was soon proven false, and the species slowly started to dwindle in numbers as each generation was smaller and smaller. The ruling Council thought they had no choice but seek outside help, and found a solution. Ixaena young could survive and be born perfectly healthy through the use of a host. The trick would be to find volunteers among the stars. There weren't many races that would be compatible, but they would ask every single one of them.

Which brought them to Earth.

Jack Lindsey was about to graduate college with a degree in xenobiology. The opportunity to be directly involved in the Ixaena re-population experiment would not only look amazing on his application to Ph.D. programs, but it was a once-in-a-lifetime experience. Naturally, he volunteered. His friends teased him about it, but no one was surprised. Jack was always been the first one out the door when any new... well, anything, really, was being offered. He was high energy and kept to a regular routine to stay fit and healthy. He was in peak physical health, and was looking forward to fulfilling the fertilization portion of the project. Yeah, he had a bit of a xeno fetish, which was another source of the teasing.

The Ixaena had promised to care for the hosts who volunteered, though Jack personally didn't know any women who wanted to participate. Humanity didn't really know anything about the Ixaena; they kept to themselves mostly, participating in trade agreements that frequently involved passing through their sector of space rather than actively trading resources. Most of Jack's friends felt bad for the dying race, but no one wanted to risk any number of complications that could happen without some more study being done. Unfortunately, the Ixaena didn't think they had a lot of time to turn around their decline, so whoever volunteered would become the study. This did not engender confidence.

The Ixaena were also firm that there would be no monetary compensation. They didn't want to take advantage of anyone in a bad situation who might be tempted to sell their services; the very idea seemed to horrify them. They wanted full voluntary action. Needless to say, there weren't exactly lines of people wanting to get involved.

The experiments were being conducted at the National Institute of Xenobiological Studies. Jack was instructed to go to the east wing, where he was then guided through long pale corridors into what looked more like a hospital ward than a research lab. He didn't see any patients, just a few men being interviewed by men and women dressed like nurses, the occasional harried person in a lab coat.

"Here we are," the woman in a lab coat that had been guiding him said as they stopped in front of a large sliding door. "The Ixaena you'll be fertilizing is inside. All your paperwork is in order, so just step right in and say hello. All of the Ixaena we've interacted with have had an intuitive grasp of Earth languages; some of us suspect they may be telepathic, but so far their official communications have always been through a translator box."

Jack nodded and took a deep breath. "Here goes, then."

The door opened, and he stepped inside. The room was warm and humid, as Ixaena preferred. It was dark but he could make out a shape across the room, about his height but much wider and amorphous. The door closed behind him and a dim light came on over his head, leaving the shape in the dark.

"Greetings," said a translator box from the shape's direction.

"... Hi," Jack said after a moment. This was not what he'd been expecting at all. "Why is it so dark in here?"

"Do not wish to frighten with appearance. Thankful for volunteer, for eternity of Ixaena."

Jack smiled a little. "I haven't done anything yet, but thanks. You don't have to worry about frightening me, I'm a xenobiology student. I know what Ixaena look like."

"Pictures. Not the same. Yet will comply, if at ease."

The room went from dark to dimly lit, the Ixaena moving toward him with a wet, slick sound. The deep magenta mass rose up into to a vaguely humanoid form with a writhing base reminiscent of a snail instead of legs. It was right -- this wasn't like he'd seen in pictures. Ixaena in textbooks were emphasized to be capable of taking vague shapes and forms, but always seemed like... jello people.

"Apologies," the Ixaena said, "this one is not skilled with form mimicry."

"You don't have to be," Jack tried to be reassuring. The alien he was here to have sex with was self-conscious? That was kind of adorable. He internally shook himself; he was here for a reason, and beating around the bush wasn't going to help anything. He started undressing, tossing his clothes behind him. "So, how does this work?"

"Uncertain," it rippled as it watched him. "Human must inject genetic material, take fertilized mass into self."

He smirked, his boxers coming off. Yep, I'm standing naked in front of an alien talking about my genetic material. This is surreal, but not in a bad way. "So I just have to ejaculate... somewhere in you?"

More rippling. "Studied human anatomy. Uncertain how to make... want volunteer to... benefit?"

He blinked. "You want to make sure I feel good?"

"Yes."

That was kind of sweet. "Ok. Well, the, um, genetic material is coming from here," he gestured to his half-erect cock, "so, one way to -- whoa!" It swarmed toward him, engulfing his legs in its lower mass all the way up to his cock. It lightly tightened around him, the soft gooey warmth unsettling at first but quickly becoming pleasurable. "Uh... good start. My name's Jack, by the way."

He suddenly thought of warm sun on rocks, an impression in his mind he couldn't imagine where it came from.

"Names do not translate," the translator box said.

Oh. Was what he'd just thought been a name? "Sun on rocks? Sunshine for short?" His thoughts were soon scattered as a sucking sensation around his cock started, his legs slowly pushed apart as more of her pressed toward his ass. He briefly wondered what the hell kind of research it had done to figure out how to pleasure volunteers, before all thought fled as it pressed inside him and he was suddenly very glad he and his ex had tried pegging a few times. He'd loved it, her, not so much.

He groaned as the alien entered, trying to put his hands somewhere but only finding soft... goo.

It suddenly formed firm shoulders for him to grab. "Sun is acceptable. Jack will say if in pain or discomfort?"

He nodded frantically, "Yep, I'll tell you. Can you do that motion on my cock again, the..." he trailed off as the sensation of being licked on all sides at once overwhelmed him. Sun moved deeper into his ass too, so soft and slick but thicker than he'd expected. It was a strange sensation, having something so soft inside, but still stretching him. He let out a tiny sound of pleasure, his hips bucking a little as the slow push continued. It was slow delightful torture. He writhed where he stood as it kept going, pushing further and further inside him.

He glanced down and saw his abdomen bulge. He didn't feel any pain at all. He hadn't told it to stop, would it keep going? Slowly filling his bowels, making its way up his intestine if he let it... "Pull out," he said. "Not all the way, but..." his jaw hung slack as it pulled out for a while. It didn't need his prompting to push back in again. Soon Sun was pumping his ass, absolutely filling him as he watched his abdomen bulge and contract again. This should hurt more, he vaguely thought somewhere in the back of his mind, how does this feel so good...

Then it vibrated.

He came, hard, a his sight going white as all movement around and inside him stopped.

"Vital signs are erratic."

He laughed, surprisingly tired. "I bet. 'S ok."

Sun lost all semblance of humanoid form, instead spreading around him to support his weight. Eh, fuck it. He relaxed and sort of fell into the alien, like a waterbed. "Um. You're still in me," he said.

"Fertilization was success. Gene pools are compatible. Require incubation for young to develop. Host organism likeliest."

"You can tell it worked already?"

"Yes. Can now use to stabilize offspring, provided offspring is incubated and fed until stabilization is complete."

"Right. The host organism you mentioned...ah!" His insides were sensitive as Sun shifted inside him, as if switching out which part of it was in there.

"Will keep healthy. Observe, keep safe. No pain, only pleasure."

It took his brain a solid two seconds before he jolted upright, as upright as anyone can sit up quickly on a waterbed of sentient goo. "Whoa wait a minute, you mean me? How would that work?! I don't have the internal organs for carrying a baby, of any species!"

"No more female volunteers for Ixaena," Sun said. "Small number, yes. Now none. Only fertilization. Futile without host. Please. Need Jack."

He felt sadness mixing in with his panic, and realized it was coming from Sun. "Look, I want to help, I really do. But I ask again, how would that even work? Where would you put it?"

The mass inside his ass moved, making him grunt in surprised pleasure, "Here."

"You're um," he licked his lips and focused on breathing. "You're secreting something, aren't you? Something to keep me from feeling... worn out, down there."

"Promise only pleasure, no pain. Will feed Jack, and offspring feeds off Jack."

Fuck. He was in the metaphorical arms of a telepathic horny-hormone-secreting alien that wanted to put a baby in him. He'd be helping to save a race from extinction, so there was that. And it was probably going to be the most sex-filled however long of his life...

"How long does the offspring have to incubate?"

"One month, Earth time."

A warm, eager feeling spread through him. Sun was probably encouraged by the question. One month wasn't much. Hell, compared to human pregnancy, one month was nothing. A month of great sex and being waited on hand and foot?

"Ok. Sure, what the hell, let's do it."

A flood of happiness overwhelmed him as Sun writhed beneath and around him, as if giving him a full body hug. "Thank you, Jack."

His response became a wordless moan as the mass of goo inside him throbbed and pressed deeper. Sun engulfed his cock, already hard again as a flood of sensations covered him, every inch of his skin warm and sensitive to touch, his nipples hard as it brushed over them, his ass stretched wider as more of it pressed inside. He could hardly think, everything a haze of sensations, his heart pounding as his hips bucked of their own accord, desperate for orgasm.

A tendril formed near his face and he opened his mouth for it. Seemed like the right thing to do in the moment. It tasted like rain and rosemary and honey on his tongue as it slid inside, the speed on his cock increasing as the tendril hit his gag reflex and shoved past it. He grunted in surprise, the urge to cough easing as something loosened his throat. His head was spinning, his ass so incredibly full and now his throat stuffed, he never expected anything like this to feel so fucking incredible...

He came again, more goo shoving inside him as a gush of warm liquid suddenly hit his stomach.

"Nutrients and remove pain," Sun said.

He nodded weakly, exhausted, and glanced down at himself. His formerly tight abdomen bulged forward, bloated. He looked around in a light headed daze, the tendril in his throat moving easily with him. Sun was still supporting him at a diagonal angle, sort of half reclining.

"Jack is exhausted. Can sleep here."

He felt warmth all around him, like a thick blanket. He was pretty tired after all that... and possibly a little in shock from the whole alien inside him thing. So, he fell asleep.

When he woke up, his abdomen had gone from "a little bloated" to "small beer belly." How long had he been asleep? He tried to pull the tendril out of his mouth, which didn't work at all, but Sun picked up on his panic.

"Calm, Jack. Still safe. Slept for five days. Offspring has settled well."

Five days?

"Jack is not calming."

He vigorously shook his head. No shit he wasn't calm! He tried to get the tendril out of his mouth again, with the same result. He groaned in frustration.

"Will keep Jack calm. Sleep."

He bit. It was kind of like biting a warm gummy bear, but it had the intended effect. Sun pulled out of his throat fast, a sense of alarm washing over him.

"Don't you dare keep me asleep the whole time!" he shouted as soon as his mouth was empty.

"Hibernation is easiest solution. No discomfort."

"Plenty of discomfort! I need to know what's going on. I don't want to just wake up one day about to give birth! That sounds fucking terrifying."

Sun was quiet for a long moment. "Oh."

He laughed, bewildered. "Oh? That's the best you've got?"

Sun shifted around him, almost... awkward? "Recognize discomfort with process. Unnatural to human male experience. Desire to keep... Ensure completion."

Jack sighed. "You put me to sleep so I wouldn't freak out and back out down the road."

"Uncertain of metaphor, but likely yes?"

"Yeah. Ok." He rubbed his face, "Alright. I don't know how I can convince you, but I fully intend to see this through. If you're worried about it... I don't know. Do you want to sign a contract? Make it so I can't back out at all?"

The translator box didn't have a lot of emotional variation, but Jack somehow knew Sun was offended. "Willing host only."

"I am willing!" Jack gestured to his stomach, "It's already in me! This is just security. Does that make sense? Your people do trade deals with other races, this is just like another trade, right? You said there would be no pain, and plenty of pleasure. I said, ok, sure, put your baby in me... oh god that sounds terrible when I put it like that, but anyway, that's the deal! No putting me to sleep, right?"

"Understood, Jack. Apologies. Nervous."

Jack chuckled, "I got that impression, yeah."

Of course, being awake did mean it was a lot easier to be bored. He managed to convince Sun to let him regularly stand up and stretch, do some basic workouts to keep himself active. The alien wasn't happy about it, concern for its offspring plainly evident, but Jack was able to assuage some of those worries with stories of how beneficial moderate exercise was for pregnant humans.

"How come I haven't seen any lab techs?" Jack asked one day while he warmed up with some yoga poses. He was on all fours, arching his back like a cat and flattening it again in a cycle. His baby bump (he still hadn't quite wrapped his head around that, despite its growth) would have put him at about four or five months if this was a human pregnancy. Instead, it had only been about two weeks.

"They monitor," Sun said from its position a few feet away. "No outside contact once fertilization and implantation successful. Cannot risk contamination."

"Right," Jack breathed. "Your people nearly died out due to a plague, you're sure not going to risk exposing your young to alien contaminants."

"Correct. Do not fear, will contact help if any distress or danger to Jack."

He smiled, "I'm not worried about that. I was just curious."

Sun pulsed a sense of contentment, and moved closer to him.

Then he froze.

Sun was instantly alarmed. "Unwell?"

Jack had to force himself to answer. "I think I just felt the baby move."

He nearly fell over from the overwhelming joy he felt from his lover. Sun swarmed over him, wrapping him up to caress his belly. He laughed. "Easy. It was just a little bit..."

The answer he got was a euphoric jolt of emotion, just pure ecstasy. This meant the world to Sun. Hell, it meant the survival of its race. This was a major milestone.

... and he'd automatically thought of it as his lover, hadn't he? This wasn't the 'for science' good Samaritan relationship he'd expected.

"Sense anxiety," Sun said. They really needed to do something about the emotional options on that translator box. Everything sounded the same, but he could feel the emotions were different. He felt a lot of emotions from Sun, lately. Could the baby...?

Nope, he was immediately dismissing the idea that the developing alien currently housed in his guts could be acting as some sort of psychic conduit. Still. He did seem a lot more sensitive to Sun's moods over the past week, and vice versa.

"I'm ok," he said. "I'm... yeah, anxious. Feeling it move somehow makes it all more real. I'm glad," he hurried to add, cognizant of his alien's tendency to freak out, "it was just unexpected."

"Awed by Jack's selflessness," Sun said, with more tenderness than the translator was rendering, he was certain. Sun stroked his belly, secreting some sort of substance across his skin. "Will help with further growth. Keep strong and flexible." Sun vibrated all around him, almost like it was purring as it pushed against his ass. "Internal important as well."

"Uh huh," Jack nodded with a smile, his eyes closed as his mouth drifted open. "You know, if you want to fuck me, you can just say so."

"Stated truth," it said, adorably petulant. Then it added, "Also, yes. Enjoy pleasure for Jack."

Jack's cheeky rebuttal transformed into a moan as Sun entered, slick and pliant before becoming thick and firm. They'd done this enough times now that Sun was comfortable experimenting with texture, something Jack had been delighted to discover it could control on command. As Sun started moving within him, he could feel ridges forming along its makeshift cock, hitting him perfectly with each stroke, filling him deeper with each thrust.

Jack's knees gave out, falling back into his lover's mass, his cock stroked as Sun fucked him, tendrils forming to tease his nipples. He gasped as the baby moved again, pressure on the thick mass inside him stimulating and shockingly arousing. Sun didn't say anything, but its movements shifted to move in time with the baby as the tendrils at his nipples increased their attention, the mass wrapped around his cock soaked with his pre-cum as it held him on edge. Soon his nipples were swollen and red, his cock was rock hard to bursting, and if he'd denied any link between offspring and parent before, that was proven patently false by how clearly they moved in tandem, every stroke of his prostate accompanied by a wriggle of the life within him.

Fuck, he was going to orgasm from feeling his baby move--

He cried out, overwhelmed as climax rocked his core, his whole body feeling on fire as Sun held him.

"Incredible Jack."

He laughed a little, exhausted. "You're not too bad yourself."

Jack grunted as he woke, yawning around the tendril in his mouth. The baby was moving again. His hand drifted to his rounded belly. In three weeks, Jack had grown to look like he was past his sixth month. The baby filled his intestines, now stretched who knew how much. Something in Sun's secretions had made his skin and muscles elastic. He didn't know if he'd go back to normal after. Neither did Sun. It was too late to think about now.

Sun secreted the nutrient painkiller he'd been living off of for weeks. He hadn't been hungry once, and true to its word he hadn't felt any pain, only the occasional discomfort thanks to his new size. It was hard to adjust to a growing belly when he got so much bigger every week.

Feeding done, the tendril slowly withdrew.

"Baby's moving a lot this morning," Jack said.

"Yes." Sun slid over his belly, feeling the wriggles and small vibrations. "It grows well," Sun said, pleased.

Jack laughed a little. "Good. It's getting pretty big."

"Will grow larger."

"That... doesn't surprise me."