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Zalk gave Kalleira a little wave goodbye as they threw themselves down from the top of the lighthouse, feathering their jetpack just enough to land comfortably on the beach below. Every so often the Plaza stores got an entirely new set of good and services to enjoy - she little talking cat creature up at the lighthouse's top ran one such store, and it was usually the only shop on the entire island that kept the same list of stock month after month.
Today was different. Kalleira had actually brewed up something new.
The size potions weren't exactly anything special, but they were good for a few laughs here and there. Being able to shrink down to tiny form and harass their friends was almost as fun as growing to double height and scaring away people hunting for treasure on the beach. Like a lot of things available for purchase at the Plaza, there wasn't much practical value in them, but the fun factor kept them in high demand.
Shaking some sand out of their boots and wandering back to the grassy paths leading up to the island's central tower, they set themselves down on the nearest bench, rummaging through their pack. The new potions were, in all honesty, pretty vague about what they actually did. The height-changing ones were clearly-labelled, but there were a few that not even Kalleria's sales pitch had been able to explain properly.
The one that caught there eye was the corked purple bottle - which had been by far the most expensive. The handwritten label contained no information except three hard-to-read words.
Maximum Size Potion.
With a shrug, they set their bag down beside the bench and uncorked the bottle, swishing it around like a glass of fine wine to see how much was actually inside. Then, after a glance around to confirm that they were alone, they downed the entire thing in a single swig and tossed the empty bottle onto the grass behind them.
For the first few seconds, nothing happened. That familiar vaguely-berry-like taste lingered inside their throat, a slight tingle working through their body as the potion began to take hold. Ordinarily, the size potions were instant, but there was something strange about the light pressure building in their stomach. Little by little, the tingling sensation began to get stronger, pushing through every inch of their body and forcing their spine to stiffen.
Then, without warning, it subsided.
GRRRRLLLlllll llll...
"...Huh."
The thunderous gurgle was joined by another, then another, as the concoction began to do something to their insides. The sudden pike in pressure fell off again, all sorts of weird sensations running through their middle before vanishing just as quickly. All they could think to do was stay seated and ride out the bizarre effects, hoping that they weren't encountering some kind of magical allergic reaction. If anybody had been around to hear the chaos, Zalk's hood-shadowed cheeks would have turned bright pink from the sheer embarrassment of what was happening.
Something was changing. Something felt off. Moving one hand to their stomach in order to soothe the chaos with a few careful rubs, Zalk froze in surprise as they felt their hand touch flesh far easier than normal. They weren't exactly the thinnest mage around, owing to their diet, but they had at least tried to keep a trim figure where possible. It took them a few moments to even consider that the soft, warm surface in their palm was their own, and a quick glance down confirmed it.
The stylish crop-top-style robes that they normally wore left nothing to the imagination. That fairly slender midsection of theirs was no more, replaced by the belly of somebody far, far larger. It was enough for the lower shelf of their underbelly to extend out towards their thighs, spilling out over their waistline like a soft stack of light flab. With a tentative slowness, they slipped one hand under the heavy belly they now possessed and tried to heft it up, immediately noticing just how much had been added to their figure.
This wasn't the kind of body fat that they could have developed without noticing it. This was the potion's doing.
Reaching to push themselves up from the bench, they felt another roaring rumble break free of their stomach. Gripping the armrest of the wooden bench and pushing with as much effort as they could muster, they stumbled upright, one hand still holding their softened belly from beneath. They couldn't believe this was real - their middle felt so soft, so warm, so heavy, and they couldn't even begin to guess how many pounds they had apparently put on within only a few seconds. The garden walk area was still clear of other people, but that didn't make it any easier to decide what they should actually do.
Another gurgle. The tingling returned, and Zalk looked over their body again, letting loose a surprised gasp as their belly thickened out a little further - along with their arm. They didn't need to look down at the rest of themselves to guess that the same was happening all over - their pants were beginning to feel tighter, riding slightly lower across their ass, and the fancy robes they wore were starting to suffer the same problem.
Grrgrggllll…
They were gaining weight. Rapidly. Not just across the middle, but all over. They had chugged the entire thing all at once, just like any other potion, but the effect was happening in stages - and there was no telling where it would end.
Any sense of worry vanished as they realised the implications. The mild panic gave way to a latent curiosity as they began to wonder if the Maximum Size Potion was really capable of what its label suggested.
A red flush began to show from beneath their hood as they began to toy with the heft across their middle, embracing the softness with all they had. There was something incredibly satisfying about feeling the weight there, lifting up their stomach or toying with the slightly-more-defined tits that were beginning to form as a result of the added pounds. Already, they looked on par with somebody who lounged around eating snacks all day and night, but the worrying rumbles and groans from within their stomach told them that the process was just beginning.
Grrrnnn…
It must have been only a minute or two at most, but any semblance of Zalk's original slim build had already vanished. Instead, there was just a plump, doughy mage struggling to fit into their rapidly-tightening outfit. A flustered mage, at that.
It didn't take much longer for another groan to push out of their stomach as the next wage of growth began, a strange burbling forcing its way out of their fattened gut as they began to swell outwards even further. The blue-tinted cloth belt around their waist was being pushed to its limits, the fabric visibly starting to stretch as the sheer girth being added to their waist began to work against it. This time, there was no subtlety in how they were growing: Zalk was barely being contained by their outfit, with everything except the hood struggling to even keep itself in one piece. Their belly was beginning to bulge out far enough that they needed both hands to hold up the mound of soft flesh, with their freshly-formed rounded tits following suit. Their arms were starting to thicken from the wrist upwards, making every movement clumsier, and there was no doubt in their mind that their thighs would burst out of their pants sooner or later.
All they could do was moan, groan and let loose little gasps of breathy pleasure as their body continued to grow of its own accord, every new addition to their waistline only making their face turn redder and their body heat up further. They had gotten huge before plenty of times, especially with magic, but it was always a self-directed exercise or something they had direct involvement in. This potion was different - this potion had undefined limits, and Zalk was prepared to see just where those limits lay.
The weight was making it hard to stand, but Zalk never really knew how to get themselves comfortable for things like this. It didn't matter that much anyway - before they got the opportunity to sit back down on the bench, another groan escaped their stomach. Within moments, the fabric around their waist began to split as the belt began to slowly tear, strained beyond its own physical limitations just trying to keep their pants on. The audible ripping caused a strange response in their brain - it was both the hottest and most concerning thing they had heard all day.
On one hand, it was a milestone worth breaking, and bursting out of your own belt never failed to appeal. On the other hand, the potion's effects clearly didn't care to re-scale clothing alongside the wearer, unlike all of the other size potions Kalleira sold.
It was no surprise that the belt was beginning to struggle. The fat belly Zalk had developed was still growing, progressing into a small mountain of soft, comforting flab that was making it hard to stand correctly. Keeping both hands under their belly to support it was only causing more problems than it solved, especially since the arms attached to those hands were beginning to thicken out faster than they had been prepared for.
Mrrrnnn… grrrrlllg…
Yet another rumbling groan from the depths of their stomach cut their train of thought short.
The belt simply gave up. One final push from their stomach and waist was all it took for the fabric to split right down the middle, tearing the entire garment in half as it buckled beneath the sudden excess of flesh it was trying to hold back. Their pants began to suffer a similar fate, tearing around the weakest points as the material met its match. It was exciting to feel their entire outfit straining just to contain them, their own body starting to overwhelm their clothing with every passing minute.
The potion’s effects were beginning to ramp up. Then next ominous gurgle from their stomach was immediately followed by loud, frantic ripping as their thighs finally pushed the fabrics to the point of no return, individual seams bursting one by one under the direct assault of their thickening body. With no belt left to try and hold everything in place, their outfit began to fall to pieces – and with no outfit, their body was able to grow freely.
Zalk practically collapsed on their ass as they felt themselves swell out even faster, the undefined heft of their chest and belly making standing much harder than it needed to be. Their midriff was growing beyond the proportions they ever should have expected from such a small potion bottle, but it wasn’t the only thing growing – their arms, legs, ass, even the cheeks hidden beneath their hood, all of them were thickening out just as nicely.
They were getting taller, but not because of any added height. There was simply too much of them for their body to contain everything in any reasonable space anymore, and the flab was spilling forth without anything to hold it back. Their figure was far from merely heavyset now – their belly had been fattened out to the point that they couldn’t even reach the apex, not that their plumped-up arms were going to keep that range of movement for long. Their massive gut was being accompanied by a suitably-large body, one that was still growing at the whims of the potion mixture inside them.
There was no denying that they were probably going to get huge. Already, they were large enough that the bench would have probably snapped in half from the weight alone, but that was never where these things ended. Zalk had a very strong hunch that this ‘Maximum Capacity Potion’ was going to stay true to its name, and that meant that they would be big by the time the mixture wore off.
They had absolutely no complaints about that.
Huffing quietly to themselves between every sudden spurt of growth, Zalk began to wonder if the groans and moans coming from their growing gut were even part of the potion anymore. The added space was causing all kinds of havoc in their insides, and the urge to let loose a powerful belch was becoming harder and harder to ignore. The potion wasn’t just making them larger, it was filling them, forcing some kind of tingling air into their stomach and building the pressure up in a way that they hadn’t been anticipating.
GWOOOrrrrble…
There was absolutely no way they would be moving anymore. Their fattening arms had begun to reach the point where they had barely any range of movement left, both shoulders and elbows trapped beneath a thick layer of plump flesh that was getting rounder and softer by the minute. Their legs were becoming similarly useless, each thigh fattened up until the only defined shape left as the base each boot – and even then, the leather was beginning to creak.
The rest of them was fairing no better against the swelling. Their belly had become almost unrecognizable, a mountainous mound of soft pudge that was beginning to take up most of the footpath in front of them. Their ass had expanded to accommodate the new size of upper body, rounding out to the point that it was just another pair of hills one would have to climb to meet Zalk face to face. Even their once-flat tits were resting lazily on top of their belly like heavy weights, each one sagging slightly to the side.
They were getting so huge, and it was bringing a sweat to the exposed parts of their body – that, or the excessive body heat was working against them.
Cursing under their breath, they let loose another satisfied moan as their stomach groaned again, threatening to keep them growing. The weight, the heft, the lack of motion, the added flab on every inch of their body, it was all leading to one forgone conclusion.
They were – or were at least on the verge of – becoming a complete blob. Every passing minute brought more pounds to their destroyed waistline, fattening them up from every angle and turning them into an even larger mountain of mint-green fat. At this point, they were large enough to take up the entire floorplan of the tower’s DIY store – or fill one of the plaza’s corridors. They were enormous, but the groans of their stomach hadn’t stopped, or even begun to settle down.
The pressure was building and the tingling hadn’t stopped. They were massive, but they were still growing. Ominous, strained groans left their stomach as the sensation grew stronger and stronger, the potion working some kind of strange magic on their stomach, stirring everything up, forcing-
“BWOOOOAARRPhhhh… hhhahh… hnn…”
The thick belch echoed throughout the plaza. There was no way in hell that nobody didn’t hear it.
Groaning to themselves and doing their best to catch their breath, Zalk sat still for a moment – not that there was much else they could do. Size potions didn’t wear off on their own – and the stock of Normal Potions they had in their bag were the only way to get back to normal.
Another light belch slipped out as Zalk tried to turn around and grab their pack, failing to even see the bench that they had left it beside. Either they weren’t able to turn as much as they expected anymore, or their own ass was blocking the view – perhaps both.
The sound of chattering voices began to approach from the central tower, summoned by the mighty belch that had been forced out of their throat, and the pink flush on their cheeks began to burn a little bit brighter. They would just have to wait for somebody else to hand them the potion – when they were done enjoying Zalk’s new size, of course.
Knowing some of the people who frequented the plaza, there was a good chance that a few would pick up the new potion for themselves.