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twitchesandstitches · 5 years

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Commission for @alt-hammer of a Karkat/Terezi/Nepeta polyamory romance set on an AU where the trolls live on Earth and, after a year away, have returned to Karkat for a sleepover whle moving into his place and got STACKED

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The photo lurked in a crowd of other pictures, of varying sizes; some were pretty much the same size as it, and others were a lot bigger. Still others towered over it like a very sweet tiger over a kitten, making the little photo look ridiculously tiny.

There was probably a pretty good metaphor in that, wagered Karkat Vantas.

The photo he was staring at was the absolute oldest one, taken by the Parent Trio themselves; he, Nepeta and Terezi had barely been more than larval wrigglers there, hardly popped out of their cocoons and still poking at the humans for the exotic thrill of it. He was a bit stunned by how small Nepeta and Terezi were in this one; they were barely any taller than him, Nepeta wiry, Terezi very stout, and with Karkat’s more feminine build, and the way they had always been sat Vantas-Leijon-Pyrope, there was also a sliding scale of ‘round to pointy’ horn shape. A bit inverted for body shape, but whatever.

He followed the trail of photos taken over the years. They always sat in the same way, but always kind of teasing; Nepeta bonking Karkat with her horns while Terezi had him in a headlock, for example, back when they were in middle school with their human friends. The photo passed; so did the years, and there was a common theme there. Terezi and Nepeta got bigger, and Karkat did not; circa the college years, he was sitting upon their thighs just to be in frame with them, and their large bustlines pressing into his back in a way that was very distracting and they were totally doing on purpose.

He tried not to crack a grin at the memory.

Finally he looked down at the photo in his hands, taken just that morning to celebrate Nepeta and Terezi moving in after a year away from home, establishing their careers and incidentally hitting their full adult growth, and taking their respective careers of intrepid zoologist and internal affairs agent by storm. He’d been living a pretty ordinary life, by all accounts, in technical assistance calls. Even before they left for that fateful year, and they had to continue their relationship mainly via video calls, he wondered why they stuck with him.

(‘It’s nice to come home and know it’ll always be there, nice and safe,” Terezi had said once, before kissing him on the cheek. Usually that was for teasing, but he supposed this time it meant something special.)

Karkat selected a special place of honor for the photo and placed it where it would loom over all the others, like the girls did to him. Right behind the other photos, plainly visible and the new glass still shiny on it.

On the photo, Karkat was doing his best to look stern and serious; hard to do, sitting on a chair that made you look tiny, just to get into frame. The two women were next to him, sitting in a way that accidentally (and he had doubts about it being an accident) pressed their door-breaking hips right into him; both their hips had to be almost wider than he was tall! They were a lot bigger than him, more than twice his size, and while he was small for a troll, he was still bigger than a human; they would have towered over any of the beings native to their adopted world, and even over other trolls.

In the photo, he looked kind of stunned. Kind of funny, looking it at from this angle, but he still remembered the weight of them pressing against him from both his sides and above; the sense of mass like their personal space included him too, how their bustlines had grown so large he couldn’t look them in the face if he got too close. That his horns were about level with their waists. They were just so damn big.

Their hugs were a lot more fun, though.

Nepeta, in the photo, was grinning; her thick lips framed an open smile as she hugged Karkat with one wiry arm. Shaped rather like an hourglass (huge boobs, small waist, huge hips, all corded with muscle), she was at least nine feet tall, her breasts bigger than her head and filling out the lab safe gear she was wearing. She’d still just come off her shift at the biology labs for this photo. A long tail, covered in the same thick and fluffy proto-fur as the cropped hair hanging over her face, curled around both Karkat and Terezi.

Oh boy. Terezi; he blushed at the memory. She looked too big to even fit into the frame, a big and… motherly looking troll, like a personification of the very idea of the Hot Mom everyone had a crush on. Big all over; massive boobs, a soft and plump gut hanging over her belt line, absolutely massive hips, huge thighs wider than Karkat’s whole body, and she was even taller than Nepeta to boot, at least a full head-and-shoulders more. Even sitting down, cackling up a storm and doing the neat trick of giving Karkat noogies but being a sweetie about it, she emanated a weird charisma. The tightly pressed and professional business suit of a lawyer she wore (the cleavage cut low, not because she wanted to but her boobs were just so big that low cuts popped in) seemed incongruous.

Appearances were deceptive. Terezi Pyrope and Nepeta Leijon were by far some of the most skilled, competent and smart people in the whole world, and he was still a little offended on their behalf that they wanted to spend their lives with him.

He knew them well; Karkat had been dating the two of them ever since high school; technically middle school, if you believed their parent’s interpretation of things. Multi-person relationships were not so uncommon these days, especially among trolls, and definitely after the discory of ancient troll artifacts depicting cultural touchstones of their unknown homeworld from before they had ever come to Earth; the translated notions of pansexual relationships based on different sorts of interpersonal dynamics had been an interesting one, and the discovery of it had put Aradia’s mom, Damara Sr., right in the spotlight.

She was a generous lady, bankrolling Terezi and Nepeta’s education like she had, and they had really gone places in but one year. To the law circuits, to the most prestigious laboratories in the world… and he’d been with them all the time, dating mostly by distance, over video call and e-mail, but they’d all been loyal to each other even as fame seekers came calling to earn their favors.

‘Terezi and Nep have got weird taste,’ Karkat concluded. Those two women had turned down some big stars, sticking with him. He was just the guy who kept the house for them to come home to, or so he’d thought of himself.

There was a soft motion from behind him, a sense of air being moved, and he didn’t even have to look around to know that Nepeta was standing nearby now, her tail swishing gently. He turned to face her and instantly blushed, staring back at the ground.

Nepeta’s boobs… were so… BIG. Where was her face at!? Where am I supposed to look… oh damn, that is BIG… don’t look, don’t look! BE A GENTLEMAN, YOU DENSE VAGABOND.

“Aw,” Nepeta cooed, perfectly aware of what he was thinking, and she moved over to him, bouncing enthusiastically all the while. “Come here!” She scooped him into a hug; he squeaked as he was lifted off the ground, against a much cooler body and then a lot of softness that he sank into, like a big and slightly sloshy bed. He nearly vanished into her cleavage as she hugged him, purring rumbling all around him.

And then, she kissed him on the forehead, holding him up higher to do that.

She put him down. Karkat wobbled faintly. “Are you going to keep doing that every time you see me now…?” He said weakly.

Nepeta nodded firmly. “I have to make up for lost time. I haven’t been around you for too long! Me and Terezi promised!”

Karkat felt his heart skip several beats at the thought. He felt warm and fuzzy, thinking about it. He was just a solid romantic.

But, to buisness. “Okay, we got everything ready for our official first night together as a… uh. Proper romance trio?”

Nepeta frowned. “I don’t know.” She turned her head and yelled, “TEREZI!”

“WHAT?!” Another voice bellowed from elsewhere.

“DO WE HAVE ALL THE STUFF WE NEED!?”

“I DUNNO! BRING IT HERE! MIGHT AS WELL GET EVERYTHING READY!”

Karkat nodded with a grim purpose totally inappropriate to the situation. “IT WILL BE DONE!”

“COOL, THANKS!” Terezi said. “I’LL BE DOWN, GIMME A SECOND!”

“WAIT, YOU DON’T NEED TO-” There was a loud stomping noise, as if of stars taking a very curvaceous weight they were not built for. Karkat groaned. “Never mind…”

Nepeta’s mouth worked, calculating the damages likely to ensue. As she did, her horns gouged right into the ceiling; she was just too tall for it otherwise. “Oops…!”

“Never mind! Gotta renovate this place anyhow.”

“I’m sorry!” Nepeta said anyway. “I don’t want to ruin your house! Our house! Um. Sorry!”

“...Eh. Place has been empty for a while; it’s mostly just been me here.” He froze up. He had talked about a lot of things to Nepeta and Terezi since they left and he’d stayed behind, but he’d never quite found a way to put into words the numbing sense of isolation.

He had missed Nepeta’s bone-crushing hugs, the way Terezi threw an arm around his shoulder and crushed his body to her own ithat wasn’t quite bullying. He missed their voices on the air, the sound of them singing off-key to drown out an especially annoying commercial.

(“Come on!” they’d yelled, years ago, when they had been small; Karkat had been slightly smaller, but they had been just as tiny as him, three rambunctious gremlins, their horns like a sliding scale of round to pointy.

He’d wandered over, grumpy and pouting, but he bellowed louder than either of them, and they picked up the song with him, discordant and screeching until Dad Vantas came down and promptly joined. Then he headbutted the TV and dared the kids to do the same.

He still remembered how cool Terezi and Nepeta’s hands felt on his hot blooded arms.)

“Having to get repairs done is totally worth have you guys here, full time,” he said, straying back into his usual persona.

Nepeta gave him a very knowing look that calmly indicated she wasn’t buying into his deceptions, and she smiled. “Sorry anyway. Look… I got some meat pies for us earlier. Let’s bring them up.”

“Yeah, sure.”

Karkat dropped to all fours and galloped into the kitchen, the bulk of Nepeta right behind him. She paused at the entrance and he gamely ignored the severely wrecked doorframe and the spaces that had apparently been carved out for some distinctly curvy frames much too large to fit into a Vantas-sized doorway. He walked past a trailer of crumbled plaster and glanced up to the ceiling. There was an impact point, as if of an unwary head boink-ing into the ceiling, and two wavering tears right into it, apparently scooped right out with easy force, and they went all the way to the table… and another pair going back out. They were pretty wide and, he was sure, a perfect match for Nepeta’s slightly concave horns.

He pretended it wasn’t there. No reason to make her sad.

Even so, he went to the closet and got out a little cleaning robot he’d gotten Dave to design into a crab-like shape. It swore in a very creative mash of randomized pretentious insults and obscure slang; that would have been Sollux’s part of the gift. He sent it to clean up the mess and went to get the pies.

He tried, at least. The table was built to his specifications (a little bigger than an average human, but smaller than most trolls), but the specially woven basket was almost wider around than the tables entire diameter. Filled to the brim with enormous pies that had to weigh a couple dozen pounds each, stuffed with juicy meats and savory sauces, each one nearly as big across as Karkat’s torso and promised to feed an entire family for a week. They’d probably make mouthfuls for Nepeta and Terezi, though.

“This is just a few pies, huh!?” He said, grumpily.

Nepeta grinne and patted one huge hip. “A growing girl needs lots of food to build up!”

“That’s the excuse you’re going for?”

“Yep!”

There was a loud stomping behind him, at the newly expanded doorway to the kitchen. It was both an announcement, declaration of intent to enter, and lurking beneath that, a quieter invitation.

It was a very layered noise, but that was just Terezi Pyrope all over.

Karkat turned and looked up, and up, and up some more, at an absolutely enormous teal-blood troll woman. He’d been vaguely aware that the two loves of his life had kept growing when he had just sort of petered out, and that puberty was a gift for them that never stopped giving, but it had been one thing to get a vague idea of on video call. It was totally different to see their full enormity in person.

Terezi didn’t so much move as swagger, and her hips suited a motion like that; they were so wide, testaments to absurd fertility, that she couldn’t even fit them into the doorway, and she was too tall to fit anyway. She ducked down, swinging one hip in and then the other in a surprisingly quick jerk. Her breasts heaved, pinching against the doorway, just too big to fit through so they were pushed together, as if by a rather mean-spirited push up bra. Terezi grunted with effort, heaving and struggling, her broad shoulders flexing…

Nepeta winced, covering her ears in expectation of an architectural problem. Karkat avoided further stress and just blurted out, “Oh, hell with it, just smash through!”

Terezi did so. A lot of plaster rained down, and a bit of framework crumbled around her waist as she stood up, and bonked her head into the ceiling just like Nepeta apparently had earlier. “Ow!” She ducked down again, too tall for this room. “Stupid low ceilings…” Karkat grimaced at her, and Terezi verbally backpedaled. “Uh, it’s a good low ceiling though… yeah. Your ancestors should be proud. ...I think?”

“Damn right!” Karkat retorted, mostly on reflex. It was a family joke that the house had been in the Vantas bloodline, in its various permutations, ever since trollkind had first come to Earth from wherever it was they’d originally come from. The archaeological evidence that pinned the earliest trolls at beng at least around six thousand years on Earth made the claim of owning this spit of land extremely unlikely, since at that point Karkat’s most distant ancestors had probably been crawling around central Asia with the semetic branch of humanity they would eventually be considered blood-brothers to, several continents away from this house.

It could be very hard to tell the difference between a running Vantas joke and a logical impossibility the family had nonetheless wired into their brains. Certainly Karkat’s father, Kankri, thought it was important to keep the joke going with a totally straight face.

Terezi grinned, but given how huge her boobs were, it was really hard to tell; they looked almost bigger than Karkat’s whole upper body, and projected out from Terezi’s torso like a cliff face, her t-shirt hanging loose from their contours. Her face, gorgeous as it was, had become a rare sight for him.

Terezi seemed to fill the entire kitchen, even though she wasn’t that big. She was too tall to comfortably walk into a human-sized room, and too wide (and too curvy, and too busty) to deal with ordinary doorways without breaking them, but the fact that she was probably around ten feet or so tall didn’t account for the sheer weight her presence had.

Terezi was charismatic; she could have been a leader of humans and trolls alike, and he’d eagerly followed the news accounts of her terrorizing corrupt court rooms and bureaucracies into shape. The terror of bribe-bought officials and authorities too eager to employ force or keep people controlled, Terezi came and swept the landscape like a dragon in a fantasy story, leaving behind ashes that she grew into a much better organization.

She put a hand on his shoulder, and leaned down enough so that her face was on level with his. Her thick lips brushed wetly against his mouth. “C’mon,” she murmured. “Let me gimme a hand.”

“Both of us!” Nepeta chided her. “We’re all in this, all three of us!”

“Yeah, that too.” Both women placed a hand on Karkat’s shoulders and gave him a pleasant squeezy touch. He almost fainted; after so many years of barely being in their presence, he was being spoiled terribly by them!

Terezi stood up, and lifted up the basket without any real sign of effort. Her arms were bulky, soft, and had no real definition, but he had felt her arms, and the muscles there put bridge cables to shame. He contemplated faking a swoon just so he could fall into her arms, but decided against it. She’d probably let him drop and then she would pick him up and tease him so bad.

Terezi winked at him. “Let’s get going,” she said, and stifled an odd sensation, as if of a little surge building up. Nepeta felt it too, but it was so minor, neither of them thought to say anything.

They did feel very hungry, though.

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Several hours passed as they got everything ready.

At last Karkat sat down on what was, to him, a mattress so thick and heavy that it could double as a very gradual bounce house. To Nepeta and Terezi, it was a comfortably thick mattress, sized up for their particularly sizes. It was stable enough, and steady enough, to support a little blanket, and all the food and drinks they wanted on a nearby tray. Approximately a dozen kegs worth of different fizzy drinks, bowls of snacks and tasty treats that Karkat could have slept inside.

The room was large, the ceiling newly renovated for the two ladies to actually be able to stand up in. Nepeta sat up and waved her arms excitedly, stretching her claws out. Terezi lounged on a small pile of blankets, rolling around and cooing. “Someone get a movie queued up,” she mumbled. “I’m feeling it~!”

Karkat, dwarfed by the two giant women, sat in their shadow and he examined a little agenda clipboard. He rifled through it. Food? Check. Drinking things? Check? Terezi and Nepeta? Very check. Karkat? HE poked himself, felt quite real, and he checked that off too.

Terezi rolled her eyes; presumably; she had been blind since birth. She left him too it and swallowed a meat pie whole, frowning at the rumbling in her belly. “Geez, I’m starving.”

“Me too!” Nepeta outdid her, gulping down two extremely large sandwiches at once, her jaws stretching to fit them in.

Karkat didn’t pay much attention to them begin to gorge, or their puzzled comments on why there were suddenly so hungry, and if he had he might have put two and two together. As it was, he selected a queue of movies for them to watch, all things they had seen together in the past as a kind of tribute to the good old days, and celebrating the new ones to come.

When he was done, Terezi and Nepeta were sitting upright, their guts rumbling very loudly. “Uh,” he said. “You two all right?”

Nepeta winced. “My tummy kinda hurts. And my boobs!” She gestured towards her heavy bustline. “It’s itchy!”

“Me too,” Terezi said. “This feels familiar.”

Nepeta nodded. “Yeah! I… oh. Oooohhh.”

Trolls have growth spurts. It was a biological thing. They usually grew gradually, but sometimes, a growth spurt hit all at once. It needed a lot of nutrition to fuel the growth, but once it hit, it was intense.

And intense it was; though it took not much more than about half a minute of furious biological activity, it seemed longer, and Karkat saw it for the first time in person. Terezi and Nepeta’s growth spurts had been big, he knew the results, but it didn’t prepare him for the sight of their overhanging t-shirts straining as their breasts abruptly swelled bigger, dozens of pounds of flesh growing on the spot!

“Eep!” Nepeta squeaked, trying to cup herself and failing. A few seamlines popped as her cleavage dove, the suddenly constraining fabric forcing a lot of new breast-flesh upwards. Her boy shorts creaked as well, in a way indicated her thighs had swelled so much the sides were touching even now, and her butt growing so much her shorts looked like a thong from the back!

Terezi sat back speculatively as her body grew in the same way as Nepeta’s, perhaps a bit more dramatically with how much larger she already was. Her boobs appeared to double in size! Already bigger than her head and upper torso, they expanded with some audible milky noises to be large enough to overflow right into Terezi’s lap, over her thighs, and even right onto the bed. Perfectly round, fabric creaking and t-shirt peeling away from all but the most awkward of her contours, so much boob that it was being pushed upwards into two hills of cleavage, rising higher than her eyes.

And she, and Nepeta, were still growing.

Eventually it petered off, with one particularly dramatic flounce from Terezi. She doubled over, nearly flopping right onto Karkat boob-first, nailing him underneath her. He sank into her new assets, and made an adorable squeaking noise.

“Oh, wow… this is a, a lot!” Nepeta said, examining herself. She turned to Karkat. “Are you okay!?”

“Yes,” Karkat said, ratherly muffled from all that Terezi on him.

Terezi leaned up and fell back down again, her increasingly gargantuan backside wobbling heavily in her pajama pants. They looked more like leggings now, though. “I’m okay, I’m fine! Just gimme a WHOA!” She overbalanced and flopped over, again, but this time NEpeta dove forward and pulled Karkat out of the splash zone.

Terezi did a thumbs up. “Nice work… ooh, this is gonna be an adjustment.”

“That was on purpose, wasn’t it,” Karkat said weakly, his body still tingling.

“The growth?” Terezi replied. “No. Landing on you?” She turned from her faceful of boob, grinning. “Maaay-be!”

Nepeta hugged him, and he fit very snugly into her expanded cleavage. It had to be going from her collar all the way to her ribs! Not as huge as Terezi’s upper body not being totally concealed, but still, that was big. Karkat sank in, and was quite content with that. “See? I told you we needed the nutrition!”

“Hmph!” He squeaked. “Let me go…!”

“Nuh uh. Make up for lost time, remember?”

Terezi snuggled over, with some difficulty; her new bust size was throwing off her balance too much. But she locked up with Nepeta, Karkat neatly pinned between them, and Terezi first kissed Nepeta between the horns, and then Karkat, her breasts pushing against Nepeta’s so that Karkat was lost in a world of giant girlfriend boobs.

“You’re sneaky,” he managed to say, too dazed to be more clever.

Both girls giggled as a movie started to play, and they hugged each other and their tiny boyfriend more enthusiastically.

#/#//#///#////#/////#commissions #my writing #fics #alt hammer #twitchy!homestuck #twitchy!terezi #twitchy!nepeta #twitchy!karkat #queued

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