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The Reaper War was over. The reapers were defeated. It was a cause for relief and a long break for the crew. Everyone was in agreement and they made plans of what they were going to do next. Shepard himself chose to take out a ton of shore leave so that he could go out on vacation, and coming with him was Grunt. At first the krogan wasn’t sure about doing so, still having plenty of fight within him but a bit of convincing was all it took and he laid down his arms, also cashing on his shore leave so they could wind down together...

Sharing a bed, Shepard was the first one to wake up. After a yawn and stretch he looked over at the krogan that was still sleeping deeply, taking up the majority of the bed as he snored. After that whole experience with the portal underwear, he and Grunt had become regular fuckbuddies. It was hard to resist the exhilaration that could only come from a krogan cock that was further enhanced by experimentation. Grunt was all too proud of his greater size and huge quads that hung beneath them and had become very used to dominating the human.

Pulling the blankets off, the first thing that Shepard laid his eyes on was Grunt’s cock while it was in a flaccid state, now sitting heavy between his legs at 15 inches. The unique alien cock was akin to a human’s having a thick foreskin that doubled as a protective layer. The tip was wide and bulbous like the head of a mushroom, the opening being circular and grape sized. At the middlepoint of the cock was a fat medial ring that even made the foreskin rise. Just looking at it was making the human tingle with excitement. Now that they were on shore leave, the two had plenty of time to each other. There were no missions to get in their way and it was early enough that there would be no one to disturb him. And that was a good thing, because just looking at Grunt’s cock was making him antsy.

Having no reason to deny himself, he simply reached out with both hands and started to trace his hands along the other male’s groin. He could feel the rough, thick skin meant to protect the area but it was still able to be tugged back, exposing the tip when he did so. Just these simple touches were enough to make Grunt groan but he remained sleeping, just shifting a bit as Shepard’s hands were exploring the cock that was even bigger than before. With it’s bigger size came a higher libido that Grunt let guide him, either pulling his commander away or discreetly fucking him anytime via the portal underwear. And though it felt amazing, Shepard couldn’t deny that it could also be a major annoyance that forced him to either hide himself away or abruptly call off meetings so the others wouldn’t know...

But now that they were alone, he was free to do as he wished. His touching was already causing the flaccid shaft to stir and swell up. Rather quickly, blood was flowing into the phallus, making it harden and extend out further. Gradually, with the help of Shepard’s teasing touches, the krogan’s length went from 15 inches to twice that, standing at 30 inches when all full mast, certainly long and thick too. The sight of it in this state was something that he could never get used to. Standing up so tall at nearly three feet long, Shepard was just as eager to interact with it and wake up the krogan.

Still using both hands, Shepard began to stroke Grunt’s cock, further admiring its size, feeling it start to pulse in his grip. Tugging the foreskin up and down, he watched the tip repeatedly appear and disappear. It didn’t take long for Grunt to start leaking precum from the circular shaped opening at the end of his blunt cocktip. From his large, over-productive quads came a slow but plentiful rise of precum that started to run down, reaching Shepard’s hands and being used to give even more pleasure.

Just seeing the precum was enough to make the human act. He came in close and raised his body up so that he could push his mouth against the tip. It was a good thing Grunt wanted to fuck so often, it kept his body used to the amount of size, that and a bit of experimenting he went through to make himself more durable. Getting right to it, he wrapped his lips around as best he could and started to push down, deciding it was best to not question the science that allowed his mouth to stretch out so wide without any pain now or afterwards, feeling the tip sliding over his tongue and into his expanding throat.

While taking in more and more he had his tongue moving to lap up all the precum that had already gotten all over, in addition to the stuff now gushing out from the tip with greater force. He did have a bit of trouble getting into his lower throat, but Grunt thrusted in reaction to the pleasure, his strength being enough to get through. From there, Shepard started to eagerly bob his head up and down while stroking the rest with his hands, getting into a brisk pace right from the start. The sounds of his throat being used could be heard, along with the increasing volume of Grunt’s voice, him trembling and squirming more against the actions being done to him.

Grunt was starting to move his hips more and more against the sailing motion of Shepard’s mouth, allowed to move so seamlessly thanks to the amount of precum glazing the walls of his throat, his strength stuffing more and more of his cock, now having nearly the whole thing in. The pulses were getting stronger but Shepard went even faster, letting his own excitement guide him. Another minute of this led to a loud groan that reverberated throughout the room. His throat was stretched further from the tip flaring out like an equine’s would, it throbbing as well as the high powered and plentiful blasts of cum were released, instantly filling up Shepard’s throat, coming out with so much power that it was forced down into his stomach, it getting quickly filled up and even swelling out to hold all of the cum being pumped in.

Even in his sleep, Grunt was putting a hand down on Shepard’s head to keep him in place, letting out more deep groans as he pumped more of his loads into the human’s inflating stomach, letting out a deep sigh of satisfaction when the last one came. Of course his massive, coconut sized balls hardly appeared to change despite the amount of cum that had Shepard’s stomach jutting out, hanging heavy like he was pregnant four times over. The hand eased off and Grunt continued snoring while Shepard eased off and rolled over. Something got wedged under him and the TV turned on.

Playing on the TV was an ad for the Debauchery Station, a place that was perfect for those looking for a good time. The station was also rather famous for being a hub where many popular pornos had been made. It was playing at full volume, the noise getting Grunt to stir even more and open his eyes with a more tired sounding groan this time. By then Shepard managed to get the remote and turn the volume down but the ad had left an impression on him and got him to think...

Once Grunt was actually up, seeing the messy state of his cock and then Shepard’s stomach, he chuckled and offered to make breakfast this time. Of course the krogan ate more than the human did, eagerly scarfing down the meal.

“I was thinking, Grunt,” Shepard said, breaking the silence between them. “We ought to really take advantage of all this time by going somewhere.”

“Sure, but where?” Grunt asked. He clearly wasn’t paying full attention, still keeping his eyes on the meal.

“You don’t worry about that. I’ve already got a place and mind I know you’re gonna love it,” Shepard promised, leaving the krogan to shrug dismissively.

***

Shepard made sure to lead the way and keep Grunt unaware. But that was hard to do, getting himself and the krogan packed. And then the journey itself to the station took them several hours. Once they actually got to the station, he was the one to fill out the papers and did so quickly to ensure Grunt wouldn’t catch on. The krogan stood by looking rather annoyed, having their luggage carried in his hands. Shepard made sure that the portal toy and underwear weren’t brought along, much to the bigger male’s frustration. It was obvious to him that Grunt had hoped they would stay home and just have sex all day. Well they would still be doing that, but this place would provide so many means of doing so. Once it was all over, an employee of the station checked it over and led them to what would be their room.

“Whoa...” Grunt said as he looked around. The place was huge, having all the amenities one would ever need, completely decked out for them already. It was like a luxurious apartment rather than some motel-like room he was expecting. This put him in a better mood and adding to that was the huge bed that was even bigger than what they had on the ship, and it was sturdy too, being reinforced to handle big guys like him and countless rounds of even the roughest sex. Still unaware of all that though, Grunt was simply making himself home. Shepard did the same as it was actually pretty late for them.

Even though the bed was so massive, Shepard wound up sleeping on top of Grunt, getting rather used to his big, rough body. And that morning, it was Grunt who woke up first with the hardest erection he’s ever had. The sheets were lifted high by his thirty inches, practically turning the bed into a tent. Shepard stirred and noticed his legs were spread by the pulsing pole of flesh. He chuckled and closed his legs together, squeezing on the shaft, making Grunt jerk and huff.

“Morning,” Shepard said in a slightly teasing tone.

“Same to you,” Grunt responded. “Can we-”

“Actually, we’ll be having breakfast first,” Shepard said. He turned himself around and started to straddle the other male’s cock, kicking against Grunt to get him out of bed. This worked, making the alien groan as he got out of bed and walked towards the kitchen, his cock jutting out and having enough strength on its own to hold up the adult human. This was all purposeful on Shepard’s end. There was so much to do here and he figured it was best to keep Grunt pent up, he would be more eager to actually try out the station’s various facilities.

As the breakfast was getting prepared, Shepard made sure to tease the cock, keeping it rock hard. Occasionally he would rise up to kiss Grunt, showing that he wasn’t being malicious. By the time the food was ready, Grunt was in a much better mood and the food distracted him from his needs for the time being.

“If you dragged us all the way out,” Grunt said when he was finished. “Then it must be for a good reason.”

“You’re gonna love it here,” Shepard promised him. “Just keep an open mind.”

Grunt didn’t understand what that truly meant until he meant until they were outside of their rented room and walking along a path that took them past many shops. Looking around and stopping at a few, Grunt was taking notice that all of them were...sex themed. Selling toys, devices, even capsules that one could take, each having their own affects. As they checked out a few shops and even got some things, Grunt hadn’t noticed that they weren’t actually paying for anything. Shepard was taking full advantage of the perks the “Premium Package” came with, putting various things in the bag he was carrying, hoping to eventually use all of them.

The place where they actually stopped was a spa. Shepard decided to register them for a special massage. Grunt wasn’t entirely sure but decided to go with it, being led into a locker room where they could undress and store their things. Both soon clad in nothing but towels, the human and krogan pair stepped into the massage parlor and were led to their respective tables, Grunt of course needing one that was big and strong enough to support him. He still wasn’t sure about all of this, even growling when he was first touched but a word from Shepard made him relax.

A staff member came in close and began to work on the krogan’s nearly nude body. He had experience with the species and knew what to do when it came to their sturdy bodies and where their sensitive areas were. Grunt allowed himself to be touched and was quickly surprised to feel the masseuse climbing up and then straddling his back. Their hands and fingers started to effectively knead away his tension. Even though the touches were so simple, Grunt felt himself starting to become relaxed, his growls turning into deep sighs of relief. Tension and aches he never noticed until now was all getting worked out, making him all the more relaxed. Nearby Shepard was receiving a similar treatment; of course it was easier for the staff to massage him.

While still getting his massage from the one on his back, Grunt felt others touching him from both sides and this time he let them do so. Their added touches were adding to the relaxation, keeping him calm and soothing him further. He started to drift off, his mind slipping into a trance of sorts. After a while he was pulled from it because the nature of the touching had changed. Grunt could feel it: while they were still technically massaging him, there was something different about this. Subtle at first but becoming more obvious was their hands becoming more teasing and grabby, reaching under to feel up his pecs, going further down his body to stroke over his hips and rump. Even with the towel covering his lower half, the krogan’s quads and slightly inflated cock were poking out as he lay on his stomach.

So they started to touch that as well, still keeping their contact light. Tracing over the bulges with their fingertips, gently cupping and rubbing...they weren’t outright playing with Grunt’s balls or directly stroking his cock but were doing a good job of further exciting him, made evident by the state of his length: swelling out further in terms of both thickness and length. The growls returned but had a needy tone. He was reminded of how Shepard had teased him that morning, leaving him without the morning release he was used to. As he was just starting to put some pieces together, Shepard was already very aware and had made sure things would play out this way. In fact coming to this station was his way of getting back at Grunt from all of those times with the portal underwear. Now it was the krogan’s turn to be teased and left in a pent up state...

Lucky for Grunt, Shepard didn’t intend to be petty and leave him like that for so long. That would be a waste of a trip. No, he waited just long enough for Grunt to show signs of near desperation, reaching that state of needing something to push his cock into. That’s when the massage came to an end and they were being led off. Grunt was taking heavy breaths, the front of his towel lifted and his cock boldly jutting out for the rest of the staff to see. Luckily, the place they were being led to was private, where it would be just the two of them...

Just outside of the massage parlor, Grunt and Shepard were taken to a hot spring area but instead of sharing the bigger spring with the majority, the human had requested a private one that was big enough to fit them both.

“So, how are you liking the place so far?” Shepard asked when the staff departed.

“You knew what kind of place this was all along,” Grunt accused.

“I was wondering how long it would take you to figure it out,” the human chuckled. “What do you think?”

“I think this is your fault,” Grunt said, referring to his pulsing and leaking cock. “So you’ll be the one to take care of it.”

“Naturally...but first...” Shepard started to enter the hot spring, letting out another comforted sigh from the heated water. It felt perfect after that massage. Grunt stood outside out of the water, starting to look annoyed again when Shepard motioned from him to join him. The krogan caved and started to walk into the spring, sitting down and also letting out a sigh from the water’s temperature. That seemed to keep his mind off of it. The two sat across from each other, enjoying the spring and making some light conversation about the station. Now that Grunt was aware of this place’s nature, he asked some questions that were answered and he too became intrigued to experience more for himself. There was a plethora of shops, other facilities such as a full gym, and even the porn filming studio the station was famous for. That really piqued the krogan’s interest.

“Well then, how about we get in some practice?” Grunt asked as he pulled himself out of the water, sitting on the rim of the pool, having his feet still submerged but cock and balls out and dripping with water and precum.

Shepard didn’t attempt to tease him this time, nodding and approaching, getting on his knees while still in the water, having his face at level with the krogan’s sack. He was quick to run his tongue along the uniquely shaped ballsack, getting the first pleasured moan out of Grunt. This was exactly what the bulky alien had been waiting for. After that massage and soak, his body felt more sensitive than usual. The simple sliding of Shepard’s tongue made him nearly jump. Shepard noticed this too and chuckled before he gave his next lick, making sure his reach went further. He swept over one big orb to the next, making the pleasure transfer as well.

Going back and forth between them, the human brought his face in even closer and started to just nuzzle against them while still licking, smearing his own spit and the precum that was dripping down the length all over his face, making the alien huff and squirm more. As he licked, the taste of it was getting all over the human’s tongue, giving him even more of a reason to keep up his actions. Against his wet and sticky skin he could feel the two orbs in front churning, full of so much cum just waiting to be released. He could have easily gone all in, licking and stroking the huge shaft but instead he decided to keep teasing Grunt by sticking to just his testicles.

Grunt was quicker to catch on to what the human’s aim was and he caved this time without making a fuss, gripping and starting to pump slowly at his cock while Shepard gave all of his attention and touch to his quads. With more force, Shepard started to run his tongue back and forth, still stroking the front pair of balls while his hands reached out, under, and around to give attention to the back pair. Massaging all four balls with his mouth and hands was making Grunt’s pants all the louder and deeper. The rough skinned spheres were stirring even more, leading to a greater amount of precum that was spilling down to be tasted and savored by the human.

Wanting to take things further, he focused on an orb and started to suck on it as best he could, swirling his tongue all over, slathering it in his saliva, bringing about more tingles and waves of pleasure that traveled across the entirety of the krogan’s body. Above him he could hear the pumps of Grunt’s hands, becoming all the sloppier from the amount of cum getting smeared onto his fingers and palm. Pulling back and diving his mouth onto the other ball in front, Shepard was using his mouth and hands as effectively as he could, his focus being purely on giving the krogan pleasure, wanting to hear his voice intensity.

Grunt wasn’t expecting Shepard to put this much effort into this. The smooth trailing of his hands, kneading and even gently squeezing his fat orbs while licking, suckling, and rubbing his face against the ones in front, making sure each of them were given effective stimulation. He was still marveling their size, each a bulging coconut sized orb so full of heavy fluids. There was so much precum cascading down Grunt’s cock, oozing onto his face and hands but the balls themselves seemed to be completely unaffected.

“Yes! Keep sucking on them!” Grunt said, embracing the feelings that were given to him. “Let me see how much you want my quads!”

Doing just that, Shepard put even more effort into his actions while letting out muffled moans of his own. He could feel his own cock pulsing without it being touched. Just being able to worship the quads so effectively was enough to keep his body charged. That surge of excitement was put to good use, his licks and sucking becoming harder while listening to Grunt jerking himself off.

Grunt let out more low noises as he stroked himself, admiring his own greater size while Shepard was focused on his quads. This was his source of pride as a krogan. Even if he was tankborn and didn’t grow up in his kind’s culture, this was something that set him apart from the others. Pulling his fat foreskin back and forth felt so good, especially when his fingers were rolling over the bulging medial ring. He had hoped for much more but was really starting to appreciate the unique feeling of Shepard worshiping his balls only; sucking and licking them with clear passion, moaning and rubbing himself against them over and over. Giving all four balls attention was making his precum flow freely and so much was coming out at once, oozing and jetting out from his grape sized urethral opening. Using all of that fluid, he began to pump his cock faster, partially thrusting into his hand when it came down, making the feelings all the stronger for himself.

“Getting close?” Shepard asked. He was so used to Grunt’s loins and the way they acted.

“Yeah, I am,” Grunt chuckled. “Just...don’t stop!”

That was an easy enough request to fulfill: Shepard pushed himself further to lick, suck, and caress the quads with greater effectiveness, feeling the cum sloshing around inside of the rough-skinned spheres, how hard all four were stirring by now. By now an excess of hot and sticky precum was raining down on him, making his upper half completely slathered in the fluid. It made his stroking so simple to do and he lapped up as much of the fluid as he could, never tiring of the strong taste on his tongue.

Against this stronger degree of pleasure, Grunt jerked and pumped his fist with greater force, finally reaching his peak. He raised his voice, yelling out while squeezing his swelled medial ring. His entire cock was throbbing hard and the exposed tip of his cock was flaring outwards, expanding to a greater size to ensure insemination. But instead it was shooting out, its consistency much thicker than the precum that came before, being launched from the cock with so much force, hitting one of the walls and flowing downwards into the hot spring’s water.

Still giving all of his attention to those quads that were drawing up and squeezing against themselves, Shepard felt even more hot and gooey liquid flowing down onto him, moaning from the sheer thrill of making Grunt cum so hard. It was enough to make him moan and buck his hips, releasing his own seed into the heated water. But his climax was hardly anything compared to Grunt’s. Having his balls stimulated while he was cumming gave the krogan a rush like no other and he just kept releasing huge torrents of his spunk, his cock being a cannon that was erupting nonstop, bathing the human and filling up the hot spring so much that it was becoming more cum than water. Shepard and Grunt continued to stroke his cock and balls respectively for an entire minute more until it came to an end, leaving the krogan to groan out deep and long, feeling the heavy afterglow of releasing so much at once. Shepard let go of the quads and felt how sticky the heated water was as he remained kneeling in it. Now he was pretty much bathing in a pool of krogan cum that was kept hot by the natural spring.

“Mind if I join you?” Grunt asked, his tone conveying his much better mood. He didn’t think twice about slipping into the heated pool of cum, letting out a relaxed moan. “You were right. I think I’m gonna like this place,” he said, reaching a hand out to pull the human in close...

***

The next day, Shepard was roused from his sleep by a series of deep grunts and thumps coming from one of the room’s corners. Opening his eyes and looking in the direction of the noise, the human saw the krogan thrusting into the wall.

Learning from yesterday’s experience, Grunt did some exploring of his own and learned that the room had an attached gloryhole with buttons that he could press to let others at the station know that he was looking for some fun. It didn’t take long for him to feel a pair of hands stroking his large cock and by now he was pumping into what was definitely a tight, lubed ass. He was still rocking his body when he heard the approaching footsteps, looking over to see that it was indeed Shepard walking up to him.

“Morning,” the human said, getting an up close look at Grunt pumping his cock through the hole. It wasn’t merely a carved circle in the wall. From what he could see, this gloryhole was a sophisticated panel, its entry hole could expand to fit various sizes and attached were a pair of bars that Grunt was gripping so he could rock his lower half effectively. “I’ll make you breakfast when I’m done.”

“Any way I can help speed that along?” Shepard asked, feeling his stomach starting to growl.

“Hehe. You can get behind,” Grunt said, making his backside stick out more.

Shepard smirked and got down on his knees again, having an underneath perspective of Grunt thrusting away, making his balls swing back and forth. Looking further ahead he could see the cock’s length getting shoved in and pulled back, the portion moving in and out being slathered in precum already. Determining that Grunt had been at this for a while already, Shepard knew just how to proceed.

He lifted himself, not going for the balls again. This time his aim was for the krogan’s rocking backside, which he got a hold of so that he could keep close to it. When he had his face close enough, he ran his tongue over the rim, feeling how it winked in response to his touch. Giving it repeated licks was making Grunt all the more vocal, receiving pleasure from both ends was making his heart pound and his body with more strength.

“Mmm... Not bad...” Grunt said aloud, finding himself really enjoying the soft touches of the tongue against that area. It was bringing him more pleasure than he would have expected, not having much experience in having his own hole played with. Pumping his cock deeper into the gloryhole also had him pushing back harder against Shepard’s tongue. Ready for this, Shepard put more force into his own actions, focusing his tongue on the rim itself, pushing against it until the ring of muscle started to open up, this really made Grunt moan out.

“M-maybe I could get used to this...” the krogan panted. He wasn’t willing to admit yet that he was enjoying the feeling of something in his ass. “Just don’t get cocky...” he growled, hearing Shepard chuckle behind him.

There was a certain kind of excitement that came to Shepard when he was able to orally penetrate the krogan, prodding his tongue against the warm anal walls for the first time. He felt how they would twitch against his touch and how tight the passage was, putting up some resistance against his intrusion. Moving it about, he worked to worm his wet muscle in further, earning himself an even deeper grunt from the alien. The clenches were strong, proving that Grunt was just as strong on the inside as he was out, but Shepard worked with patience instead of brute force, delivering more strokes to the surrounding surfaces, his stimulation relaxing and loosening up the krogan’s tunnel.

“Fuck! Don’t stop now!” Grunt growled. With much more of Shepard’s tongue inside, Grunt was feeling the shocks course through him. And they came from such simple movements, the human dragging his tongue along and pressing at certain spots. It was a bit different but Shepard managed to find the krogan’s prostate, giving it plenty of attention while Grunt was still roughly humping away, feeling himself getting all the closer to his climax.

Enduring the tight hole on one end and deep licking from the other, Grunt kept moving his body for as long as he could but with his prostate being touched like this, he could only last a few more firm pumps. His climax was stronger than usual too, his prostate still being stroked as he was cumming. And from this came large gushes of his rich, viscous cum that was rocketing out, hurtling into the one on the other side of the gloryhole. Thick ropes of cum were seen splattering out from the stretched rim, splashing back onto Grunt’s crotch and oozing down his pulsating quads. There was no doubt the one on the other end had an overswelled stomach. The gaped state of their hole could be seen when the krogan pulled his cock free and Shepard removed his tongue as well.

“Oh that was....” Grunt hummed as the gloryhole closed itself, being an impressive sight. “I think I don’t mind being rimmed...but nothing more!” he then insisted. Shepard agreed without protest but thought he could see Grunt blushing. As promised, breakfast was made and they were both treated to a good meal. Grunt asked about the day’s events and Shepard revealed that he had a place to go in mind...

***

They were again making their rounds among the various shops that were lined up to their left and right sides. Like before they passed shops selling various toys and specialized lubes but didn’t stop to browse. Shepard was leading the way directly, clearly having a certain place in mind that he wanted to visit. Taken to the end of the shopping street and turning a corner had brought them to a specialty clothing shop, just as the provided map of the entire station said.

“What’s this?” Grunt asked curiously. He got his answer when he and Shepard walked into the store. Various arrays of sexual clothing, made for tops and bottoms alike, were all on display. The krogan’s expression changed into one of curiosity as Shepard led him around the shop, bringing him to the section meant for tops.

“What do you think?” the human asked as he watched the krogan browse and sort through various outfits.

“I think.... Oh!” Grunt’s eyes fell on a large leather harness set. “This. It’s perfect. And I’m certain it's in my size.”

“There’s a changing room,” Shepard pointed out. “Let’s make sure.”

Grunt nodded and together they went into the changing room. Shepard watched as Grunt put on the harness set, first the pants that were open in the front and back, letting his loins and ass hang out for all to see. And the top set thankfully fit him perfectly, even highlighting the beefy, rugged form of his body. Grunt didn’t wear much most days but there was something about this outfit in particular that was making Shepard feel antsy.

“What do you think?” Grunt asked. He just had to look down because the tented state of Shepard’s pants served as an answer. “It’s not enough to wear it. I think this needs a test run...”

The next thing Shepard knew, he was lifted and upside down with his pants already off. Grunt was holding onto him, licking his lips before pushing his thick tongue right past the human’s hole, making quick work of digging in deep and grinding against the walls, slathering them in his thick saliva, stretching him out at the same time.

“Ooaahh! G-Grunt!” Shepard had almost forgotten that he needed to keep his voice down, that there were employees and staff alike just outside of the changing room. That task was easier said than done. Grunt wasn’t making it simple for him at all, licking with a roughness that forced such strong waves through him. It took no time at all for him to feel stretched and filled from the tongue. Heat was intensifying from the amount of saliva getting smeared all over as well, being another sensation that kept him struggling to not moan aloud. And when the tongue pulled out fully, Grunt gazed upon the gaped hole he was responsible for, feeling his massive cock throbbing with need, his body tense with anticipation and need for what was about to come next.

He flipped Shepard over, still having a hold on the human, now having the tip of his cock leaky aligned with the human’s freshly licked ass. He pushed Shepard down and both let out a quiet moan from the respective stretching and filling they felt. Not stopping until he was in completely, there was an obvious bulge in Shepard’s stretched stomach. Just after hilting, Grunt started to thrust into the other male, pushing and pulling his length against the tight and hot walls. The pleasure was intense right from the start and grew stronger from Grunt putting even more force into his actions, applying enough force to make their bodies thump together upon contact.

Even if they were keeping their voices down, the sounds of their fucking were easily heard, making their hidden actions plainly obvious. For one, the smacking of Grunt’s quads could be heard as they slapped against the human’s backside. Grunt moved them both, pushing Shepard’s body against a wall, having him pinned. Against his back was smooth paneling and from the front, he felt the krogan’s rough skin grinding against his own chest.

“Grunt....” Shepard moaned, finally letting his voice be heard. He was going to say more but that was immediately reduced to more incoherent noises. Grunt was thrusting into him all the harder, making the changing stall thump in time with his movements. The tip poking out was even larger than before. Both could feel it when the krogan thrust all the way in. While they fucked with increasing intensity, the pair were already failing to keep themselves quiet. They were both moaning out loud and panting deeply. The harsh smacks of their bodies meeting continued, becoming wetter and sloppier from the abundance of precum that was currently leaking out from the human’s stretched hole, dripping down onto the floor and forming a puddle that was slowly expanding.

Maintaining this speed and roughness, the pair could feel themselves getting close to their limits again. Wanting to finish strong, Grunt was going even faster and even harder, having Shepard all but yelling out from being filled so deeply and having his prostate touched over and over again. It was easy for the alien, slipping his cock back and forth against the precum-lubed walls. The next hard slam against his prostate and outward bulge of his stomach was the thing that undid the human. He shot ropes of his cum in between their stomachs and onto Grunt’s heaving chest. Coming right after was Grunt’s roar and the hard pulses of his cock. As it was being shot out, Shepard felt his stomach swelling outwards even more, making room for the torrents of spunk that were firing into his depths, further inflating his stomach as more and more was released, all while they were both riding the shared high of climatic bliss.

They were still panting hard when Grunt pulled his cock free, making Shepard groan yet again, his hole immediately leaking so much cum onto the already messy floor.

“Yeah, it fits perfectly,” Grunt said with a grin and chuckle as he started to lower Shepard onto his feet.

Grunt kept it on as they walked out of the changing room and up to the front counter, paying for the clothing that was already marked with the krogan’s seed anyways. They stopped at a few more shops, passing a kiosk along the way. Grunt got to see the map of the station himself and was very intrigued by the gym facility. That sounded perfect for him. Shepard agreed to go there next as well. Like the large room they were given, the gym was a huge facility with state of the art equipment. Walking in clad in nothing more but his new leather gear, the large muscular alien caught plenty of attention, helped by his loins hanging out in the open, his cock and quads swaying with weight in time with his steps.

He and Shepard went their separate ways at first. Grunt went for the heavier equipment, not paying any mind to the many eyes that were on him. While having his body on full display, he settled down onto a large weight bench, taking hold of the bar that was loaded up with some of the heaviest disks available. After taking a breath he began to lift the weights, letting out a low grunt from the bit of strain but he was able to handle it without trouble, lowering the bar to his flexing chest and pushing up, making his already thick arms swell further, the muscles beneath his skin firming and becoming all the more defined for anyone watching.

Meanwhile, Shepard was doing cardio on the treadmill, being close enough that he could watch Grunt doing his own workout. The krogan had garnered most of the gym’s attention. Without even trying, Grunt’s body was vying for attention. The dominant noises he made, how his large form stirred...the repeated metal clanking of the bar being lifted and lowered in a now steady fashion. Grunt was aware of those watching but his focus was working out, making up for the last few days he went without, feeling satisfaction from pushing his body to keep doing the reps. He wanted to grow even bigger and stronger. This want came from the natural lust for fighting his kind was known for, but also for Shepard’s sake, to become a krogan that Shepard wouldn’t be able to keep his hands off of.

Time slipped as he got into the zone, feeling the rhythmic repetition of lifting the weights, the satisfying light ache of his muscles becoming trained to become even bigger. The only thing that snapped him out of it was the sight from Shepard, who had come to him after finishing his own workout on the treadmill.

“Had enough?” Grunt asked while still going.

“For now at least,” Shepard admitted as he wiped his sweat away with a towel. “How about you?”

“I’d like to stay for longer,” Grunt said. “But you’re welcome to assist me.” As he spoke, Grunt’s cock started to stir. It was already swelled a bit from the blood pumping all throughout his body but now it was expanding and lifting to its full mast, the prominent 30 inches making those watching audibly gasp. As he continued his weight lifting, Shepard was climbing on top of him. The human shuddered as he felt the krogan’s body shifting and tensing beneath him, the muscles firming in time with Grunt’s huffs.

Going down brought him right to the fully erect cock, throbbing hard with power. Instead of just admiring it, Shepard stood up so that he could get the tip lined up with his ass. Still slick from the sex they had earlier, he didn’t have much trouble pushing himself downwards, sliding towards the base of the cock, making them both moan as he stuffed himself full, his stomach stretching out as more and more inches disappeared past his stretched out rim.

Shepard only needed a moment to collect himself. He started to move his own body, bouncing himself up and down while biting his lip, feeling the cock grinding against his walls, already releasing precum into him. A rumbling purr came from Grunt as he felt the cock hugging all of his inches, sliding along at a steady pace. His focus on the weights had not been broken. They were still being lifted as he felt Shepard riding his cock, hearing the human’s moans in time with him going downwards, stretching himself out and making his own stomach expand.

After a while of this, Shepard’s bounces were no longer enough for him. Snarling, the krogan started to hump in time with the riding, feeling how hot and sloppy Shepard’s ass was by now. Along with the sounds of their sex were the surrounding groans and wet slaps of others jerking themselves as they watched, keeping themselves quiet as to not disturb the show happening before them. Knowing that they were enjoying the show, Grunt put more effort into thrusting, making Shepard’s moans all the louder. All of this was becoming more intense as the speed and force picked up. Fucking the human while lifting weights at the same time gave Grunt plenty of pride. Everyone was watching him, wanting to see what would happen next...

The next thing he did was snarl through his clenched teeth, making sure that all of his inches were planted in deep, his cock letting loose a flood of his cum, making Shepard feel hot and full in an instant. Shepard continued to grind himself against the shooting shaft, moaning as he was being seeded, the cum being released with so much power. The excess was gushing out, the massive loads of cum pouring from his stretched rim and gushing all over the weight bench and onto the floor. It was a huge mess that the staff would have to clean up. But the pair were satisfied and so were those watching, keeping a firm hold on their cocks as they came and let loose their own ropes of jizz. After racking the weight, Grunt also pulled his cock free, leaving Shepard’s ass to leak and his stomach to deflate.

“That was just what I needed,” Grunt said. “How about we go to the showers?”

“Sounds good to me,” Shepard agreed, being surprised that Grunt was picking him up and carrying him in front of all these people, carrying him off to the locker rooms to get cleaned up...

To end the day, the pair decided to try out one of the station’s restaurants. It was a rather nice one. The interior was inviting, the color scheme consisted of reds, whits, and gold yellows. The table they were led to was covered with a big cloth and menus were given to them. After giving the orders, the pair were made to wait for their food to arrive. Seeing how long the table cloth was, Shepard was already given an idea. He looked around at first before diving under the table.

“What are you doing?” Grunt asked. But he was given an answer when a pair of hands started to fondle his cock, making it stir and firm up. “S-seriously, here?”

“You didn’t mind at the gym,” Shepard whispered from beneath the table, feeling the cock getting fully erect against his fingers. “That was different. It was-”

His words were cut off by his own moan. Shepard had been quick to turn himself around. While on his hands and knees, Shepard pushed his body back and made his whole spread around the fat cocktip, suppressing the moan that welled up from his center. He got into right away, fucking himself on the krogan’s dick, using the large alien’s shaft as a toy to pleasure himself with. His own swinging cock was already leaking plenty of precum onto the floor. So many of his sweet spots were being touched, making him want it even more.

“Shepard...” Grunt hissed, leaning forwards and balling his fist against the table.

The human responded by pushing himself even harder, riding the cock all the faster, letting out small moans as his stomach was getting repeatedly stretched out. The thrill of doing this, the risk of being caught, had brought out a side of Shepard that wasn’t usually seen. He let a desire for mischief guide him, pushing back further to make sure that every inch was taken, listening to the quiet grunts from the krogan, and the wet ‘pop’ of the medial ring going past and being tugged from the spread rim.

Looking back and forth, Grunt dared to thrust in time with Shepard’s next push, shoving his cock in as far as he could, making Shepard moan out just a bit louder. He couldn’t help it; squirming hard against the feeling of being stuffed so deeply, feeling the precum shooting into him. He was releasing precum as well, making a small mess of the fine carpeting he was kneeling on top of.

Now being roughly penetrated every time he pushed himself back, Shepard felt the cock’s tip touching his deepest parts, the sensation of being kept feeling full, his prostate getting flattened by the shaft rolling back and forth. At the same time he could feel the precum from Grunt’s churning balls oozing back out of him, dripping down his thighs.

Working together, they were going even faster, the wet sounds of the cock sliding in and out were becoming all the louder, along with Shepard’s gasps from his prostate being struck all the harder. Though he was the one to start this, Shepard was the one undone first, shaking and almost crying out as he started to cum, squeezing the krogan’s shaft hard repeatedly. Right after, it was Grunt’s turn to shudder and keep his voice down as he came with force, feeling all four of his quads drawing up and sending his cock through his cock. Jetting out from the flared tip, it was all pouring into Shepard’s guts, making a further mess of the floor beneath.

The staff didn’t seem to notice when Shepard was back up and sitting in his chair. There was still a pool of cum that had yet to ooze out further than the cloth’s reach. By the time their food was ready, Shepard obviously wasn’t feeling as hungry as before but Grunt was eager to dine and very much enjoyed the food... Once they were done, the two were quick to pay and take their leave, knowing the staff would eventually find and clean up the mess they had made.

***

They spent a few more days, doing the same as they had before: cruising the local shops and facilities while having plenty of sex either in their room or within the facilities themselves. Every morning Grunt would get his morning climax out through the gloryhole and Shepard would lead them to another place that they could try out. But there was one location that Shepard wanted to try out from the beginning. But he felt it was best to wait until the last days of their stay, something they could make to remember the experience.

He again led Grunt without telling them where they were going. This place was where their porn was shot and distributed. And Shepard had already booked for them to star in one.

“You...what?” Grunt asked when he was told.

“I thought it would be a fun way to remember the trip,” the human explained as they continued walking.

“Hmm, I suppose it is,” Grunt hummed.

Once they were checked in, staff led them into a room where they first got cleaned up and then they were told to wait a bit for their turn. Eventually they were called from their waiting room.

“So, what are we meant to do?” Grunt asked as they were standing before a bedroom set.

“Just do what you want,” the one manning the camera said. “This is your custom porno.”

“Interesting,” Grunt said with a growing smile.

After a bit of prep and confirmation that they were ready, the recording crew started up the camera. The premise was a stud krogan and his human pet. It was something the facility hadn’t recorded before so they were excited and for the duo, they would more or less be acting as usual.

The recording started with Shepard already naked and on the bed, having his ass out and presented for the krogan that had just walked into frame.

“You’re finally back. I’ve been waiting forever to serve you, master...” Shepard said, playing the part of a needy human pet-slut.

“Well, wait no longer. I’m here and have a need for your hole,” Grunt said. He was clearly still trying to get used to acting. His raging lust helped his words come off as genuine and so did his massive erection, it jutting out while being stroked with his hand.

Finally Grunt approached and when close enough, he gave a smack to Shepard’s ass with one of his hands, spreading the cheek and exposing the hole in between. Sucking on his fingers on the other hand, Grunt removed them and started to push his thick wet digits against the soft ring. Of course Shepard was pre-lubed so Grunt’s fingers eased their way in. As Shepard moaned, Grunt made a small show of his fingers going inside.

The moans coming from the human were genuine as he felt himself getting stretched by the two digits sinking all the further into him, putting pressure on his walls and touching his sweet spots along the way, in fact Grunt made sure to press on them as he started to pump the fingers back and forth. Even though he was prepared in advance, the pleasure was still strong and he couldn’t help but shake and tense from the way he was being fingered.

he was left gasping when the fingers were pulled free, feeling how stretched his rim was already. Seeing it for himself made Grunt’s already raging arousal flare up even more. Pulsing with power was his cock, being grabbed and maneuvered so that he could line it up with and press against the stretched entrance.

“Are you ready?” Grunt asked, his voice being deep and commanding in tone. Shepard responded with a nod and Grunt got a hold of him, flipping him over. Now that he was on his back, Shepard felt the krogan’s hands were now on his hips, getting a firm hold to keep him in place. They shared a moan as the cock’s tip began to push its way inside. The fingering had done well to prepare the smaller male but his passage was still getting further stretched by Grunt’s huge cock, giving the krogan plenty of tightness to push his way through at the same time.

“Fuck! You’re so big!” Shepard said. He and the recording camera were watching as Grunt’s inches disappeared and the bulge in his stomach formed and gradually expanded. The deeper the krogan went, the more his midsection was stretching out. The medial ring did halt the insertion somewhat but a simple push from Grunt was all it took to get the full length of his cock in, making the bed rock and Shepard gasp aloud yet again.

Once it was all in, Grunt got started. He pulled back and shoved his way back into the human’s depths, making him take a cock that should have been impossible for him to handle. But he was and clearly enjoyed being stuffed so full. Whether he was being recorded or not, there was no way he wouldn’t have been moaning out and clenching down hard on the huge shaft that was spearing its way through his insides.

“That’s right! Tell me how much you love that krogan cock!” Grunt bellowed. Heard with Shepard’s even louder moans were his own deep and dominant sounding grunts. They came in mind with him pushing and pulling his hips, making his cock grind against the tight walls in either direction, its silky texture making his cock throb and leak all the more. After the next thrust forwards, he started to hump hard, holding nothing back.

From then on, all that Shepard could do was keep moaning out. Over and over again, without a pause in between, Grunt’s cock was battering his insides in the best of ways. The reinforced bed was still getting rocked, its supports creaking in time with the movements. Shepard hardly noticed the camera moving around to capture more angles, settling into a position that allowed the potential viewer to see the human’s erection swinging and flinging ropes of precum.

The recording was going on for much longer than average. Grunt had been fucking Shepard nonstop for about 12 minutes now. By then plenty of precum had been released from both. Shepard’s stomach and chest was streaked with his own fluids, clinging and glistening against his skin. Meanwhile, Grunt had been leaking so much precum that there was a thick trail connecting the stretched rim to the puddle on the floor that was still expanding and the bed’s sheets were completely soaked.

“You’re close...” Grunt said. His own cock was pulsing hard, but he was still going strong, not at all close to his own orgasm. But Shepard was clearly struggling to hang on. It seemed that at any moment he would be blowing his load.

He reached his hand out between Shepard’s legs, suddenly gripping the human’s erection in his rough hand. If all of this wasn’t enough, Grunt started to pump the length up and down. It only took a few firm strokes to make Shepard cry out and arch his back. Cum came spurting out from his tip, flying out and landing onto his stomach. The camera made sure to capture the sticky ropes coming out and splattering onto Shepard’s skin. It focused on him for the whole of his climax, recording every moment of him cumming on himself.

Once his climax came to an end, Shepard took notice of how hard Grunt was throbbing inside of him but the krogan wasn’t as close as he was. Grunt’s hand returned to his other hip, keeping a strong grip as he leaned his large body over Shepard’s, letting out another dominant growl that made Shepard shake.

Making use of leverage, Grunt started to ram his cock in hard, reaching it even further, pressing down on all of those spots harder too. Shepard’s body responded by clenching down against the shaft, giving Grunt something even tighter to push into but with his raw strength, Grunt continued to ram his way through to the human’s depths.

The smacks of his huge quads careening into his ass, the thumps of them being both sharp and wet from the mess of oozing sticky precum. As Shepard was back to moaning out, Grunt was using his body to pull back and thrust forwards. Unable to speak from the amazing amount of pleasure he was feeling, Shepard expressed how he was feeling by wrapping his arms around the bucking krogan as best he could. The smacks of their meeting was becoming all louder, and so was their combined voices.

“That’s what I love about you humans! Always so damn tight!” Grunt said. he put more weight down as he began to thrust in even harder, still striking all of the human’s tender spots within his ass. Over and over again, relentlessly, Grunt was using the human and playing the part of a brutish dom that was aiming to breed his pet.

Feeling the bigger body grinding on top of his, Shepard felt some pressure on his stomach. It had swelled up so much from the precum being spurt inside of it. The excess still leaking from his ass was further soaking the bed that was also getting rocked from the forceful pumps.

All over again, this was becoming too much for Shepard. Happening much sooner than he expected for the second time in a row, he was completely undone by the force of the krogan’s actions, the next knead of his prostate led to him shooting his cum across the krogan’s stomach and chest this time. Grunt continued to push through the hard clenches of Shepard’s ass, powering through the other male’s climax, making the human shoot even more with harder force than before.

Now pumping against those rhythmic squeezes and doing this for so long, Grunt felt that everything was about to come to a head. Instead of slowing down or easing up, he maintained the power and speed, ramming his way towards that climax, he felt his cock pulsing harder against the overly lubed anal walls.

“Rrrrgggh! Here...it comes, pet-slut!” Grunt managed to thrust his way in a few more times before completely bottoming out, having his balls pressed firmly against Shepard as they were drawing up. Finally, he was the one cumming, after outlasting Shepard twice. The human on the receiving end of it all could feel his stomach inflating, being pumped full of so much cum. It was quickly inflating due to the huge amount of jizz pouring into him at once.

The feeling of heat and fullness from deep inside was becoming more intense, obviously from his stomach growing all the larger and in an even greater amount than before. The thick fluid was gushing out from Shepard’s spread, pooling into the already soaked bed, spilling over the side, and trailing heavily on the floor. Everything was getting soaked in the krogan’s essence; Grunt’s climax had to last about two full minutes and by the end he was slightly deeply from the sheer relief and pleasure he felt.

“Now you know your place,” Grunt said as he looked Shepard in the eyes. He slowly began to pull himself off, tugging his cock free ass well, making a loud and wet ‘pop’ sound when his medial ring and then his tip came free. More cum came leaking out of the smaller male’s hole, leaving him moaning and covered in the combined mess of his own and Grunt’s seed. After all of that, Shepard didn’t have the energy to get up quite yet. But he was more than satisfied with the entire experience, hoping the recording crew got plenty of good footage.

“That was...incredible!” one of the staff members shouted. “We need to get this edited now! You two are gonna be major stars.”

“Huh. I never thought I’d add ‘porn star’ to my credentials,” Shepard chuckled as he managed to sit up.

“I wouldn’t mind doing this more often...” Grunt admitted. “And I think a lot will want to see it.”

After getting themselves cleaned up, Shepard and Grunt continued to enjoy their stay at the station until their last day came. When it did they were given the CD of their custom porno and wished very well by the staff that clearly took a liking to the pair. That was good because the human and krogan were already intending to return very soon...