An Unusual Purchase - Part 2 (Commission for RezRaz)

TAGS: Inflation/Gas Inflation, Helium, M/M

---===---

Food for thought, really, especially given that there was still a good hour before Za’Vark returned home, an hour which Niz had to spend looking for where the damned canister had gone before he ended up outgrowing their home. It was one thing to engage in sexual debauchery of a scale unimaginable to most people, but he still liked having a TV and a games console that hadn’t been flattened into a thin disk of metal and electronic solder; then again, there was something to be said about letting his body bulge outwards, filling with air as it began to lose its definition and round out, giving him more of the appearance of an overinflated balloon than anything else and deftly playing into so many of his other, minor fantasies. It wouldn’t be until quite a bit later that his body began to reshape itself back into what it used to be, at least proportion-wise; it was a process as unknown as the gas’ composition, but somehow the Kig Yar went from big and bulky, to big and round, to simply big, effectively a large-scale copy of himself that just happened to take up almost the entirety of the living room. He struggled to shut off the canister, though less because he had to use the tip of his claws to do so and far more thanks to that voice in his head telling him that he should stop and consider if he really wanted to give up what he had going there; maybe he should focus more on indulging and less on worrying about whether or not it was the right thing to do. Then, maybe, he could finally have some fun for once rather than having to concern himself with insurance payments and whether the upholstery had to be cleaned up.

It was for this reason and this reason alone that Za’Vark didn’t come home to find that Niz was merely big enough to take up most of their living space, but something far, far larger than that. The “smaller” of the two spent so much time arguing with himself over whether or not he should be having fun with his growth that he ended up going with the flow anyway, and only really remembered who was about to show up when the familiar sound of his mate’s car puttering down the street and into the underground garage triggered some kind of automatic response on his end that brought him back to some semblance of a reality. At that point, it was less about enjoying himself and more about setting up a surprise; buying the gas canister was something Niz did for the both of them, after all, just not for his own personal enjoyment, and it was equally as important for the Sangheili to have fun as it was for his own buttons to be pushed. That said, getting anything done at all was easier said than done; maneuvering in tight spots when one’s body was bigger than the room it was struggling to exist within made it slightly difficult to strike an alluring pose, even if it was helped by his odd lack of weight.

Za’Vark had absolutely no clue what was waiting for him on the other side of the door. The transformation had been oddly silent, with none of the neighbors really paying attention to the odd moan that managed to break through the thick walls; by that point, they were used to the two young men being sexually active on a daily basis and had learned to tune it out. Nor was there any outward sign that something might be wrong; with the couple’s apartment being on the fifth floor, it was hard to make out any details from ground-level, plus the Sangheili wasn’t really looking up and waiting for something strange to happen… and even if he was, he would only have noticed an oddly-coloured tint to the window, which he’d probably attribute to the setting sun shining on it at a weird angle. Thus, his thoughts were the same ones he always had during the short elevator ride up to his home: what he’d cook up for dinner, how much time he could spend snuggling with Niz before they inevitably ended up on a bed, and most importantly, what fantasy they would be enacting that night. The knowledge that his mate was planning something had long-since become something so normal and expected that Za’Vark just started assuming it was a very early birthday plan, and filed the odd reactions and giddiness to Niz just being Niz.

It was therefore with no small amount of surprise that the Sangheili opened the door to see… a foot. Or rather, the sole of a foot, big enough to fill up the entirety of the doorway and apparently attached to a leg that had been bent for so long that the first reaction it had when having the door open was push that damned thing out as far as it could go, resulting in the hallway outside their apartment suddenly being blocked off by a colossal stomper taking up all the space from floor to ceiling, scraping the latter with its talons. From within their home, Za’Vark heard someone sigh with delight, presumably at finally getting to stretch out after such a long time cooped up in a tight environment… though why exactly that was his first thought did very little but thoroughly confuse him, at least until his brain started putting the pieces together for him and the Sangheili let loose a yelp as he suddenly realized just whose foot that was.

As soon as he did though, he very quickly learned that his body was well-equipped to handle extreme speeds, as he bolted into the apartment proper in a mad dash to confirm that he wasn’t just hallucinating, and Niz had indeed somehow broken through the barriers holding the two of them back for so long. He could scarcely believe it even when it was there right in front of him, even when he laid hands on that gorgeously oversized body, even when he heard Niz’s voice speaking out to him, cooing and crooning, whispering sweet nothings into the very air, that the Sangheili might hear them and rejoice at a dream come true. He could barely believe it even when his body began climbing theirs, acting more on instinct than anything else, though the sight of a glorious giant was slightly marred by how little room there was to stand on top of them; the Kig Yar had become so immense that there were scarcely two feet between their torso and the ceiling, leaving Za’Vark incapable of doing anything but kneeling atop his engorged lover… which, as soon as he thought about it, really did work in so many different ways that he couldn’t even begin to list a fraction of them.

What words could even be exchanged between them? None were needed, and indeed none were wanted; all that mattered was that Niz somehow managed to grow, somehow succeeded in becoming the kind of hyper-sized hunk that he always dreamed of turning into, and he was right there for the both of them to enjoy. It’d be almost wasteful to spend time commenting on it and not just jumping into action as immediately and with as much gusto and energy as they could… hence why they went with the latter option the second their eyes met. It was made slightly more difficult than expected by virtue of their new size difference; as much as the couple had fantasized about it before, it was one thing for the larger of the two to have about two heads on the smaller one, rather than being room-sized and still needing to keep one arm inside a bedroom and a leg outside in the hallway in order to fit properly. The very atmosphere of the living space itself was stuffy, unbearably hot, but that hardly made a difference; if nothing else, it just drove the Sangheili into deeper depths of passion as he turned around and carefully navigated his way to his partner’s nethers, hoping that his cock was just as solid as the rest of him was.

Za’Vark wasn’t worried about how any of this had happened; all he knew was that Niz was a giant, Niz felt like he’d been pressurized to the point where his skin barely had any yield to it, and all he wanted to do was grab onto that delectably oversized cock and live out his own, personal fantasies of being little more than an adornment on a shaft big enough to smother him. Truth be told, it was hard constantly being on top; sometimes, Za’Vark just wanted to be the one who got smushed by a much larger giant, the one whose body was pathetically tiny in comparison to their partner, a role that he very rarely got to play into given Niz’s own… difficulties with their size (or lack thereof). Now though? Now there was nothing and no one in the way, nothing and no one to tell he him couldn’t just crawl over to his partner’s base and marvel at just how massive that rod was, pushing up against the ceiling with enough strength to make parts of it start to crumble in tiny clouds of dust and plaster. Nothing and no one to hold him back from opening his arms as wide as he could and embracing that gigantic rod like it was a lifesaver, his eyes rolling upwards into his skull the moment he felt it throb and pulsate with each of his partner’s heartbeats, its girth thickening further as the stimulation it received made its equally-gigantic owner squirm and writhe in what little space he still had left.

This only worsened the tight spot the both of them were in, because it quickly became clear that even at those colossal sizes, even with the simple act of himself existing in that state, Niz wasn’t anywhere near fully hard; the poor thing really did need an expert touch, the tenderness of a lover like Za’Vark, who truly understood their body and knew exactly what to do with it. Being a responsible partner above all other things, the Sangheili made sure to put his all into it, deliberately going out of his way to exert himself to the extreme, working that shaft until he began to feel genuinely dwarfed by its imposing presence, and somewhat worried that he might be crushed beneath it as the amount of space he had to work with grew smaller and smaller with each time he rubbed his whole body against it. And yet, despite this, the overall feel of it never really changed: that overwhelming sense of pressure from all sides as if Niz had been filled with air and his body was filled with nothing but pressurized gas, leaving the poor thing feeling so pent-up and unable to deal with anything that all the Kig Yar could do was moan and beg for his smaller mate to help him with how much they wanted to cum. Za’Vark, once more priding himself on being responsive to his lover’s needs, redoubled his efforts in getting them off; if Niz wanted to cum, he was going to cum.

Surprisingly, they still lasted a respectable amount of time, despite the fact that they were very clearly on edge for the duration. This left the Sangheili thinking all sorts of immensely productive thoughts; what if Niz’s stamina had improved in proportion to their size? What if they could go for hours on end if the two of them started from nothing like they usually did? Za’Vark wasn’t even thinking about the obvious practical problems that came with having a lover that was bigger than the house they lived in, nor was he considering the very real possibility that the two might end up flooding the whole apartment the moment the large, overinflated Kig Yar actually achieved orgasm. All that mattered was the rhythm of their lovemaking, the thrusting, the bucking of hips, the moaning, the screaming of names, the demands for more, the… conspicuous absence of slick pre to glaze the both of them as they were bathed in its potent scent, it was all there (sans the last one, for obvious reasons) and it was all too much. The Sangheili felt his own edge approaching even faster than his partner’s did somehow, and the two were lucky their climaxes still managed to align, against all odds…

… at least in terms of time. Comparing the magnitude and intensity of the two orgasms would be frankly pointless, given the size disparity between the happy couple; if beforehand, Za’Vark could easily cover Niz’s chest in his own spunk, and in fact had done so a few times as part of their occasional roleplay sessions, now he’d be lucky if he could make it through without his entire body being coated from head to toe in the Kig Yar’s seed! Not that he minded, of course; if anything, he welcomed the opportunity for a role reversal, relished the chance to lose himself in the tidal wave of cum that was sure to erupt from the tip of that immensely bloated member, even when his own load was already spurting out and splattering against his chest. He was stuck beneath a cock several times bigger than his entire body and that was all that mattered, and when Niz’s form seemed to tremble from head to toe when he finally crossed the threshold, all the Sangheili could really do was close his eyes and wait for the oncoming storm.

The first thing he heard was loud splashing above his head, when gallons of the Kog Yar’s potent seed slammed against the ceiling, Niz groaning loudly enough to rattle the windows, his toes curling so much that the talons at the end of them scraped against the walls, both within and outside their apartment. It seemed his whole body was retreating into itself just before the final explosion, and with a clenching loud enough to nearly trigger a second climax in Za’Vark, the full cumsplosion properly began; within seconds, it seemed like every surface in their apartment was coated in the stuff, buried beneath an inch-thick layer of spunk that only grew thicker by the moment, Niz’s claws sinking into the floor and the one knee still inside their home opening a brand new hole into the apartment above theirs. The giant’s groan turned into a mighty roar, so loud that the Sangheili riding his dick almost had to bring their heads to protect his hearing from being blown to pieces… almost, because there was just no way Za’Vark would relinquish their hold on their mate’s colossal pillar.

The climax itself didn’t last for much longer than normal though, at least the normal one; big as he may be, Niz was still proportional to his old self, and after a few more spurts cracked open the ceiling panels and oozed out of the front door, the flow stopped… but Niz himself didn’t. He was still squirming, still fighting against his own arousal, and it took Za’Vark a few seconds to really understand why; there, above his head, the thick slathering of cum that had been stuck to the ceiling had a hole blown clean through it, almost like someone had cleaned up a wide circle, a circle that kept widening the longer he stared at it, moved by an invisible force. It was only after the Sangheili noticed that the Kig Yar’s body was starting to shrink down before his very eyes that he put two and two together and finally understood what was going on: with his proper load gone, Niz was somehow pumping out the air inside of him!

It was hard to understand how that was even possible, but neither of them were in any position to care; it played straight into their fantasies and worked wonders for their already heightened arousal, giving Za’Vark in particular plenty of reasons to make good use of that giant shaft he was hugging before it was returned to normal. He grinded against it with whatever energy was left inside of him, ruining his stamina for the sole purpose of appreciating it before he lost it for the foreseeable future; after all, whatever his partner had done was clearly temporary, so best make use of it while it lasted. On the other side of the equation, Niz himself was simply too beaten up by his own monumental orgasm to really do much beyond meekly protest against “going back”, writhing in place in a weak, pathetic attempt at locating the canister, which by that point was probably halfway down the stairs to the ground floor. Inch by inch, his body deflated, returning him to his previous state while thankfully maintaining his proportions; no flabby skin or extra fat rolls, just the Kig Yar as he’d always been: tiny, smaller than his mate, and utterly thrashed by his own unbridled lust after a lovemaking session.

The two remained lying down on the ground, thoroughly exhausted and unable to do much of anything but gasp for breath and hope to find some, even when it became clear that the musky, warm atmosphere was going to work against them. Not only was the whole apartment covered in cum, but the air expelled as a result of the macro gas escaping Niz’s body had increased the temperature in there so much that the two of them were sweating something fierce… and yet they couldn’t bring themselves to care, not when they could cuddle with one another in the mess they had made after finally living out a dream scenario in exactly the way they had fantasized about it for years. It was hard to feel worried about the clean-up they were going to be responsible for when their heads were still high in the clouds, fondly remembering the experience they just went through, running through it several times a second in order to milk it for as much enjoyment as it could bring them; it would stick with them for years to come, for even if they managed to repeat it, one’s first time was always the most special one, and the first chance to grow like a giant was no different.

Still, some explanations were in order… eventually. After what felt like hours, and was certainly enough time for their neighbors to start noticing something was wrong, inspect the outside of their homes and promptly start shouting about the mass, the two lovers returned to some semblance of reality, their eyes no longer glazed and their grip on one another loosening just enough that they could properly move again. The protestations of the people outside, as well as the loud demands for an explanation, didn’t really register with them; merely one another’s soft, welcoming expression, the look they gave one another when they woke up in the morning after a particularly heavy liaison the night before. It made them want to resume cuddling, but they both knew that if they did so, they wouldn’t ever stop until they fell asleep; as much as they might want that, there was cleaning to be done, and then dinner to cook.

Easier said than done though; there was just so much spunk everywhere, especially outside their home, that the two roomies gave up trying to explain it and decided to just take the blame and move on, offering to clean everything up themselves and pay for whatever damages were done to the building. Thankfully for the both of them, the situation itself was so bizarre and unexpected that their neighbors harbored far less anger than they did concern, a few even asking if they had to contact the proper authorities to let them know there was a hyper living in the house, something that both the Sangheili and Kig Yar did their best to convince them wasn’t necessary; it was just a one-off event, something they did for fun with an “experimental treatment”, nothing more. This didn’t really convince anyone, but seeing as Niz was tiny again, no one was about to kick up too much of a fuss, especially when there was a massive clean-up operation to be done.

At the very least, it made for an excellent opportunity for the Kig Yar to explain himself after his larger self barged into his partner’s life as inexplicably as it had. Za’Vark had a million different questions, not the least of which was whether or not this had been the surprise that Niz had very clearly been trying to hide from him for goodness knows how long by that point (it was hard to remember details, his brain was slightly off-kilter from everything it had gone through). The once-more smaller of the two allowed the Sangheili to get everything out of their system, knowing that it was pointless to try and explain every little detail while curiosity still burned so brightly; instead, after Za’Vark was clearly done and struggling to find something else to say in order to fill the silence between them, Niz recounted what happened: everything, from when he first saw the ad, to his exploration of the website, even all the pointless filler in between him placing the order and it arriving, such as what he had planned for them to do and how scared he was that it would be wasted money. He went into excruciating detail regarding the growth itself, making sure not to skip anything, not even the most seemingly inconsequential titbit about what he was feeling or thinking, in a deliberate attempt to get his mate riled up and ready to go once more; Za’Vark had to actually ask him to stop at a few moments just to calm himself down, lest he make all that mopping they were doing very redundant indeed.

“So wait, you just huffed some gas and it made you bigger? Is that it?!” Za’Vark demanded to know incredulously, “If I’d known it was that easy…”

“I’m not sure it is tha- hold on, don’t step on that - dunno if it’s really that easy. I mean, it was cheap, but at the same time…”

“I could have just been a dud?”

“Pretty much, yeah.”

An interesting proposition, and not one that either of them really wanted to entertain. The only thing that mattered at that point was that the potential scam was actually the real deal, and seeing as the canister was still somehow intact and had miraculously remained within the confines of their flooded apartment, its nozzle and hose having gotten stuck under the door, it was still reusable; all it needed was a little bit of polish and a hefty dose of water to wash off all the cum stuck to its surface and it was ready to go again, and given what the pressure gauge was telling them, most of its contents were still inside.

Niz protested this initially, claiming there was no way that he hadn’t already used up most of the macro gas; it was ridiculous to expect otherwise, given just how long he spent huffing that thing… and the fact that he had already made up his mind about buying several more units and really didn’t feel like being dissuaded of this notion. But no, the Sangheili was entirely correct; a cursory look at the canister’s pressure gauge revealed that it had, at most, only lost about ten percent of its full pressure, presumably still holding enough of the gaseous substance for the two of them to have extensive fun with.

This, however, posed a bit of a problem, since neither of them were really in the mood to spend hours cleaning up after every single time they felt like indulging in their size fantasies (given that they’d be doing nothing but that, if they were to be honest), and their neighbors might very well take umbrage at them disturbing their peace and quiet every other day… or far more frequently, given their quite active sex life. Moderation was needed, which was itself one hell of a challenge for two people who had just been given the means to fulfill their dream kinks in all their overblown glory and now had to finagle a way not to indulge in it until it grew boring.