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“Hey, big sis, can I have one of these drinks?” Young Aryn was on her hands and knees, rifling through the kitchen cabinets for something sweet to snack on when she found something strange — two shimmering bottles filled with bubbling technicolor liquid, each labeled with a single scrawled letter atop masking tape: P, and B.
“I’m not your sis, Aryn, I’m you, and, uh… I didn’t think we had any sodas left? But if you found one, it’s all yours.” Aryn called back from the living room, yelling over the drone of the television. Both girls thought that it was a little weird living with their time-displaced self, but both Aryns had both gotten used to it by this point — although it was a little trickier for the adult Aryn, considering any drastic changes that happened to little Aryn’s body were projected through the time-stream and ended up affecting her too. But one little soda wouldn’t matter, she thought.
If only she had remembered what these sodas really were.
Giggling like a schoolgirl, little Aryn grabbed both of the bottles out of the back of the pantry, looking at them up close. They were both vibrant colors: one a deep, hypnotic blue, and the other a radiant red. “Which to start with…?” Really, she didn’t need to think too hard: the bottle labeled B, whose contents were the same crimson shade as her messy mop of hair. She popped the cork off the neck of the bottle, causing the drink to violently fizz up, and not wanting to spill a drop, she began to chug, downing the whole thing in a few seconds.
“Pwuah!” Aryn exhaled hard, smacking her lips as she savored the aftertaste of the fizzy fluid. She expected something like fruit punch, but it was creamier and richer… tasting almost like carbonated strawberry milk. But something felt off to her only a few short moments later: her heart was pounding hard, she was sweating hard, and her hands were trambling. Was the drink expired, maybe? She tugged at the collar of her white shirt, trying to air out her torso a little bit as her chest felt like it was on fire. Now, Aryn was on the cusp of puberty, and she knew that her itty bitty titties were likely to get a little more sensitive as they started to grow out, but this didn’t feel like that. It truly felt like someone had covered her budding boobs in gasoline and took a match to them.
“Nnngh…” Aryn doubled over, her hands crossed cover her chest, each one gently cupping one of her little breasts. She panted, trying to muster enough strength to call her older self for help, but nothing came out but a quiet moan. It ached badly, but the pressure her palms put on it… it really made them feel better. Like, a lot better. She began to massage her chest, rolling her hands up and down her tender flesh as strange jolts of pleasure began to fill her, radiating from her tits outward. She felt her pussy beginning to tingle, moistening up, as well as her preteen girlcock growing hard in her shorts. Her gropes grew harder and faster, accompanied by a chorus of louder, lewder moans. Aryn was no stranger to sex — or masturbation, technically, considering her one and only sexual partner so far had been her future self — but the waves of pleasure radiating from her immature chest far surpassed any sexual sensation she’d had so far. It didn’t take long for little Aryn to slip her now-stiff nipples between her fingers, tugging her tits outward with reciprocating strokes. Her head spun, so dizzy with pleasure that she didn’t even notice the fact that her boobs were getting a little bigger with each tug.
More and more tender, preteen titflesh pulled away from her chest, turning her barely-there buds into respectable handfuls, into head-sized honkers, into titanic titties. As they grew bigger, the pleasure grew proportionally, breaking in her thousands of new nerves with impossible waves of breast ecstasy. Her tight, white top stretched at first, then strained as more and more cubic feet of plush flesh grew outward, pushing the buttons on her top to their absolute limits — at least until they could hold no more, the fabric tearing and the buttons going flying off into the great beyond, freeing her nine-year-old hyper-tits from their clothing confines. Each massive mammary was as big as her torso when the growth finally started to slow, perfectly round and perky, almost defying gravity with how perfect they were. Aryn could barely believe her eyes — she always wished she were bigger in… certain places, and this was almost a dream come true for her.
And yet… there was still another drink. And if the bottle labeled B grew her breasts, then the bottle labeled P…
She laid back, her massive tits sagging to the side to give the little girl a direct view through her cleavage at the swollen, aching girlcock between her legs, tenting her leggings something awful. She was already pretty big down there for a nine-year-old with a respectable five inches… but she wanted more. She popped the cork off the bottle and downed the fizzy thing in a few short seconds, tossing it aside and paying attention to her twitching, turgid member. She didn’t want to miss a moment of this. That strange boiling feeling once again began to bubble up across her flesh, but despite the sharp sensation along her sensitive parts, she was excited. Waves of tingling pleasure radiated inward from every last part of her body, all focused on her turgid cock and bloated balls — slowly at first, but slowly accelerating, growing the pressure in her loins faster and faster. Her stiff dick already strained the fabric, but with each pleasured pulse it grew thicker and longer, inch after inch sliding from her immature loins. Her balls, modest as they were, plumped up to match her swelling shaft, growing from little walnuts to plump grapefruits, themselves aching and churning with so much loli seed. The outline of her cock’s crown was clearly visible through her bottoms, with a big white stain at the top of the tent as each new inch of growth forced a miniature cumshot up her shaft, again and again until the fabric was completely saturated through with her pre — which, luckily, wasn’t a problem for long as her junk finally grew large enough to tear straight through the thin elastic.
Her skinny five-incher had grown by almost a whole order of magnitude. Gone was her slender, girlish shaft and cute little balls — now she had four fat fucking feet of bitchbreaker thicker than a leg soaring toward the ceiling, totally rock hard and making her lightheaded between the sheer amount of blood such a thing required and the sudden intense burst of hormones flooding in through her body, egging her on to fuck, to breed, to cum. Each one of her nuts sloshed with tens of gallons of jizz, with the pair of them together almost as large as her massive bust — almost. They visibly throbbed and pulsated in sync with her heartbeat like they themselves were a living thing, and each sudden spasm of her sack sent a spurt of pure-white pre up along her four-foot shaft, the pressure so intense it rocketed from her cumslit and splattered against the ceiling. She reached down, rubbing her hands along its veiny surface. She couldn’t wrap her petite fingers around the entire girth even if she wanted to.
It’s perfect, Aryn thought. She always wanted to be bigger, and it didn’t get much bigger than this.
At least, that’s what she thought before her older self came in.
“Aryn…” the twenty-two-year-old had stammered into the doorway between the living room and the kitchen — or, at least, she tried to, considering the state her body was in. Little Aryn was a bombshell of a nine-year-old with a four-foot cock and tits nearly as big as her whole body — and those changes affected her future self, too, plus thirteen years of additional growth. Big Aryn’s balls were scraping against the floor as her tremendous, seven-foot-long girlcock curved gloriously up toward the ceiling, nearly as thick as both of her legs put together. Fat, chunky ropes of sperm pissed from her tip like a faucet, running down the underside of her swollen, throbbing cumvein in multiple thick rivers of seed. Her top was torn open, and jutting from her chest was a pair of mammoth mams, easily half again as big as little Aryn’s own, with swollen areolae capped with stiff, foot-long nipples leaking white themselves like miniature cocks — milk, it seemed. Her pale white skin glistened as she was dripping with sweat, and the older girl looked at her young self with an almost crazed look in her eyes. The sudden growth of her body across the timestream came with it the pent-up desires of theoretical years of disuse. Although she had only had these endowments for a couple of minutes, as far as the canon of the universe was concerned, she was always like this — and the twelve missing years of disuse has left the girl furiously horny. “You found my special drinks, didn’t you? And now we’re… like this… fuck, I need to cum…”
Little Aryn squeaked, looking up at the towering mountain of sexuality before her. She sheer perfection of her massive leaking cock, and gigantic churning balls, and perky, titanic titties… it was almost enough to make the nine-year-old cum by herself. She was salivating, and the tattered remains of her leggings were getting soaked from the faucet hidden behind her balls. Even with her new toys, she wanted — no, needed to feel her own perfect cock inside of her. She struggled for a moment beneath the mass of her new growth, swaying back and forth on the floor until she built up enough momentum to roll over, resting on her tits as she spread her legs wide. She reached back, hiked down what little remained of her leggings, and spread her cheeks wide, exposing that tight, nine-year-old cunny for her older self. “Fuck me, big sis…”
Older Aryn paused, staring at the hindquarters presented before her. She and little Aryn had made love before, of course… but she knew that this wasn’t an invitation for a gentle, slow session of passionate sex.
No… little Aryn wanted to fuck. And big Aryn did, too. She dropped to her knees, and with both palms pressed her springy shaft down to a nearly horizontal cant, the massive tip pressing against her younger self’s cunt. Her cumslit itself was nearly as long as the loli’s pussy, and the fat, throbbing crown only a little smaller than the girl’s entire ass… but Aryn knew that wouldn’t be an issue. Those potions did more than just induce growth, after all. She slowly thrust her hips forward, her tip pressing against Aryn’s tiny cunt, wiggling back and forth, trying to find some purchase along her dripping folds, when, finally, she managed to get a little bit in. And from there, it was much easier as she fed her dick into Aryn’s elastic fuckhole, inch by throbbing inch. Older Aryn bit her lower lip, eyes rolling back in their sockets as the impossibly plush insides of her younger self wrapped themselves around her seven-foot-long bitchbreaker. Sticky, silky walls gripping her tight, throbbing and undulating around her dick, coaxing her for her thick load. Her hands sunk into her own tits, each squeeze firing bolts of pleasure through her, making her cock surge and her pussy squirt as she groped her chest.
And little Aryn was enjoying herself, too — each new inch inside of her tight, underage pussy making her cum over and over and over again, frying her immature brain with the purest pleasure she’d ever felt in her short life. Her sack tensed up again and again, milking the seed from both big bursting balls as her four-foot futa-fuckstick flared out and fired countless blasts of preteen cream that splattered against her underboob cleavage. Again and again, she came, parting the tight canyon that was her cleavage a little more each load with the sheer force of her cumshots, until it forced its way all the way through, her entire tits stained through with thick, sticky jizz. Her ejaculations were near-constant as endless gallons of cum burst from her cock — and it only got messier as big Aryn’s own dick kissed her cervix. Both girls were no strangers to uterus-bounding sex — big Aryn’s dick was just over a foot long when fully hard originally, after all — but they’d never gone any further than that. But the older woman pulled back, taking nearly her entire length with her, and the thrust in hard and fast, her impossibly large breeder effortlessly forcing the loli’s womb open to force foot after foot of throbbing, precumming futacock into her innermost parts. The girl’s belly stretched outward with the outline of her older self’s dick, reaching far enough to press her own cock down, and indeed the bulging tip was just a few inches shy of her messy, cummy cleavage. And while the little girl couldn’t tell, the older woman knew that only about half of her cock was inside at this point — little Aryn was going to be well and truly skewered on her future self’s dick by the end of the evening.
Older Aryn leaned forward, her gargantuan breasts enveloping little Aryn’s body nearly entirely as the woman mounted her like a cur in heat, beginning to thrust harder, faster, forcing as much of her aching, swollen cock inside as possible. It didn’t take long for the fat, cock-shaped bulge stretching out little Aryn’s front to reach her tits and, like the sex-starved girl she was, she squeezed her tits together to give her lover a titjob through her own distended tummy. It was an out-of-this-world experience, feeling the cock inside your cunt, inside your womb, reaching even further beyond to grind against your own constantly-cumming cock and sliding between your tits for some simultaneous paizuri. She could barely even moan anymore as each thrust knocked the wind from her, leaving her to pant desperately in the milliseconds between pumps just to keep herself from passing out — though it seemed more likely that she’d black out from the pleasure first. Aryn thrust deeper and deeper still, nearly hilting her entire length inside until even that tummy bulge slipped all the way through the loli’s tits, leaving the girl face-to-face with the cock inside of her — and that sight was enough to set her off. She had been constantly cumming, sure, but this was the big one. Her pussy squeezed down along every last inch of Aryn’s shaft; her own nipples began to squirt milk, and her cock surged, growing another six inches as she came hard, with one constant, unending flow of heady, musky sperm flowing from her. Her slender legs locked around Aryn’s hips, heels pressing into her adult’s ass, sending a perfectly-clear message: don’t you dare pull out.
And adult Aryn had no intentions of doing so. Her thrusts grew short and sharp, scrubbing the ever-living crap out of Aryn’s insides as her massive balls roiled, tensing up as they prepared to blow. And, with one last, hard thrust and a silent scream as all her nerves fried out in pleasure, she came. Enormous globes of cum pumped up her shaft, ruining loli-Aryn’s pussy even more as they slowly traveled up all seven feet of hyper futadick, hesitating at her tip only to explode outward with intense force. Aryn’s belly-bulge stretched out like she was a cheap rubber, her body recoiling to catch each and every drop of cum filling her. Endless gallons of thick, virile sperm flooded her pussy, her womb, her ovaries, stuffing her insides to capacity after just the first shot, but there was still so, so much more to go. Each shot grew her belly out a little more, adding what looked like months and months of maternity on to her petite frame until her belly was so bloated with cum that she couldn’t even see the distension from her big sis’ ejaculations anymore. And yet, she kept cumming, that big belly growing and growing. As large as one tit, then two, then the combined volume of her chest and balls both, growing well beyond the size of even her older self’s massive tits and nutsack, too. Her belly eventually touched the floor below, and as it kept growing, it started to push her up into the air, bringing older Aryn’s cock with it as it grew and grew, and both of them kept cumming. What was truly remarkable is that not a single drop of cum leaked from Aryn’s pussy — she retained every last drop in her massive, sperm-saturated womb. Her tum grew big enough to shove her cock and tits out of the way entirely, both bits pressing hard against her growing baby-bump, all while her arms were splayed wide in a big bear hug against her new belly.
And, after what felt like a lifetime but was, in reality, only about ten minutes or so, both girls reached their limits. Adult Aryn’s cock grew soft as her giant balls were finally wrung dry, and she slowly pulled all seven feet from her little sis’ cunt with a wet and juicy schlop, her soft shaft baptized in a mess of jizz and girlcum erupting like a hose from Aryn’s destroyed pussy. The little girl was panting hard, her ragged breaths only interrupted by sudden bouts of airheaded giggling as she slowly ran her hands up and down her grown body. She was loving this.
“Well,” adult Aryn said, standing up on wobbly feet. “I hope you learned your lesson. Don’t go looking for my special drinks again, ‘little sis.’” She turned around, just about to step back into the living room when she shot a glance over her shoulder. “Especially don’t look under my bed, Aryn. Not if you don’t want this happen again,” she said with a sultry little giggle. The loli could only moan in barely-there recognition.
She knew that this wouldn’t be that last time she played with these drinks. Just… maybe she’ll wait until she can move under her own power again, first.