As Yang and Blake busted into Neo's hideout, they were prepared for anything. Sure, she'd already been busted, so it's not like she was going to be a problem herself, but still, it was better to be safe than sorry. When they got in, they were surprised by how normal everything seemed. If they didn't know better, they would've just thought this was nothing but a regular apartment. Not even poking and prodding for secrets pulled up anything. At least, not until they got to Neo's bedroom. There wasn't anything fancy, other than a large bed. Everything was up against the apartment's exterior wall, with a nice clear path across the bedroom into the ensuite bathroom. However, Blake eyed the clear wall suspiciously, before stepping back out of the room.
"You seeing something, Blakey?" Yang asked, now eying up the wall herself.
"This room's smaller from the outside. I think that's a fake wall," Blake stated.
"Huh, clever. Not sure who's smarter, Neo for setting it up or you for finding it," Yang said cheerily.
"Flatterer," Blake retorted, not quite managing to keep a small grin off her face. "Now, where does this thing open?" she asked rhetorically as she went back up to the wall, examining it for any kind of opening. Yang joined in, knocking on the wall to find gaps behind it.
"Okay, there's definitely something back there. Maybe…" Yang thought out loud before changing approaches. Instead, she placed her hands on the wall and tried to slide it to the side. Much to her surprise, it worked, with the wall folding into small segments. What the pair found behind that wall was quite a surprise. There was a very large metal tank with the words 'big shake' spray-painted on it up in one corner. From that tank ran a hose with a split end., with a mechanism on it that allowed for a controllable flow. That sight was so unexpected that the pair almost missed the safe at the other end.
"Well, that's… something," Blake commented.
"It explains why Neo was just about to burst out of her clothes," Yang added.
"R-right, sure," Blake replied, trying not to look at the tank and focus on the safe.
"C'mon, I know you were checking out her mega cleavage. I'm not gonna judge, I was checking out her huge ass anyway, I swear that thing was about to explode out of her pants, still not as nice as yours though," Yang teased. Blake went bright red at Yang's comments and started not looking at the tank even harder. "Her gut though, I could take it or leave it."
"M-maybe we should focus on opening that safe, in case there's evidence in there," Blake quickly tried to change the subject, with her slightly shaky voice making that very clear.
"Yeah, go for it, babe. I'm gonna figure out how this thingy works," Yang replied, going up to the tank.
After the pair got working on their separate tasks, Yang spoke up.
"Hey, if this thing's got a split hose, do you think she was getting it on with someone else?" Yang suggested.
"Don't know, trying not to think about our enemy doing that," Blake flatly answered, her ears straining to hear the clicking of the safe. That was roughly when the safe made its final click and the door was ready to swing open. The partners took a peek inside, and their eyes went wide as they saw stacks and massive stacks of Lien and dust cartridges, along with a folded piece of paper. As attention-grabbing as all that money and dust was, they eventually took a look at the folded paper. Surprisingly, it was a recipe.
Neo's Big Shake
Ingredients:
Whole/Full Cream Milk
Heavy/Thickened Cream
Strawberries and Bananas
Chocolate Syrup
Ice Cream (any type)
The 'Special' Dust
Blend all ingredients together, pour into tank
"Huh, wonder what kind of shake this is?" Yang thought, looking back at the tank.
"It… actually sounds kind of nice," Blake admitted.
"Wanna try some of it? I think there's still plenty in here," Yang offered, knocking on the tank and making a small thud sound. Blake thought for a moment.
"Maybe… but only if you have some too," Blake counter-offered. Yang shrugged casually.
"That's fine with me, I was gonna have some anyway."
With that, the couple took the hose, which went all the way to the bed, and switched on the tank's pump. After a moment of the pump humming away, the shake began to flow through the tube and into their mouths. As soon as it hit their tongues, they both let out muffled sounds of enjoyment. After a while, it could be argued that that enjoyment was reaching all the way into pleasure, at least judging by the noises. It helped that, as they swallowed down the shake, their cores began to tingle with arousal. That, along with the incredible taste, kept them drinking. They kept going as Yang undid her jacket and Blake undid her vest. They kept going as Yang undid her belt and Blake partially unzipped the flies on her shorts. All of this was to accommodate their bulging, filling bellies. They kept going and going until they were literally at their limits, their bellies aching and taut.
"Guh, that was too good," Yang groaned as she shut off her end of the hose.
"Mmf, n-no wonder Neo got so fat," Blake agreed in a husky tone.
"We gotta have more of that some time," Yang said, her voice sounding as needy as it was horny. "B-but, uh, before we do that, I… uh… gotta go to the bathroom," Yang lied badly.
"Y-yeah, sure, I'll just wait here," Blake acknowledged, definitely not in the mood to push against any sort of lie.
Quickly, Yang shot into the bathroom, locking the door and checking it twice. Once she knew she was definitely not going to be interrupted, she sat on the lid of the toilet and removed one of her gloves. She slipped her now bare hand into her shorts, beneath her panties, and into her core. She was too horny for foreplay, too horny for teasing, she just needed an orgasm, and she needed it now. She used her other hand to muffle herself, and that was definitely needed, as she was squirming and moaning within seconds. Yang knew she had a bit of a short fuse, but she was racing towards an orgasm. She was very surprised when she went crashing into an orgasm in only a minute, but it felt too good for her to complain as she kept fingering herself to drag out her orgasm and wring out every last ounce of pleasure.
Little did she know that Blake, just on the other side of the wall, was doing the same thing, laying on the bed furiously fingering herself as she threw her head back into the bed's pillows. Yes, both of them were certain, they needed to do this again.
Using the money they found in Neo's safe, the couple rented out Neo's old apartment so that they could keep having access to Neo's set-up. It was also nice for them to have a private space away from Ruby and Weiss. That private space came in very handy, as ever since their first time at Neo's, they were spending a lot more time being intimate with each other, even more than they were before as a couple. Every time they went to Neo's old apartment, their new apartment, they drank the shake until they were filled to the brim, before splitting off for totally legitimate reasons and desperately masturbating. Neither of them was entirely ready to admit that they were getting horny from being full, that seemed like a fetish that neither of them wanted to reveal to the other.
Of course, their regular visits had more effects than just an increased sex drive. At first, it was just coming back to Beacon Academy with bellies round and full, but before long their bellies were just as round while empty. Their now pudgy bellies began to press against their combat gear and their Academy uniforms, slowly creating gaps between the buttons. Their breasts crept up and up, slowly reaching new cup sizes and straining their tops. Their rears plumped up, filling out their shorts and making their uniform skirts risk showing more than they should as their rears bounced along with each step. Their thigh gaps disappeared as their thighs grew thicker and thicker until they were rubbing against each other almost all the time. It was impossible to avoid the thought, they were getting fat, and it was all because of that shake.
It was just too darn good to give up though. They always made sure to collect the ingredients they needed, even figuring out what the 'special dust' was and how to make more of it. They diligently made sure the tank was regularly emptied, usually into their bellies, cleaned, and refilled. They even began to experiment with new ratios for the shake. Those experiments were what changed their relationship with the shake, and with each other.
One day, when the couple decided to increase the proportion of 'special dust' in the shake, things started to feel different. They were enjoying it even more than usual, and they were feeling much more open to the whole 'getting fat' thing. Hands began to wander to their own and each other's fat bodies. They were even pausing drinking occasionally.
"Mmf, I swear, you get sexier every time we come here," Yang said, her voice dripping with lust.
"Just keeping up with you, dear," Blake purred as she brought a hand up to sink into Yang's breast.
"Mmm, you know what'll make that feel even better?" Yang asked. Before getting an answer, her jacket was off, shortly followed by her tube top. Yang then took Blake's hand and slipped it under her purple lacy bra, letting Blake get a handful of Yang's heavy, bare breast, and letting Blake's thumb reach and tease Yang's erect pink nub.
"Oh, that's how you want to play it?" Blake teased. "Well, try this." With her free hand, Blake grabbed one of Yang's hands and pulled it towards her. Her shorts were already undone, so it was easy for Blake to slip Yang's hand in so she could grab a nice, big handful of Blake's bountiful behind. Yang happily took Blake up on her offer, squeezing and playing with Blake's plump ass. The pair then went back to their hoses, drinking more and more. Their hands kept playing with each other, teasing each other, as they moaned and groaned. Before long, their closeness meant that their bellies were touching, being so large and full of the wonderful weight gain shake. That little bit of contact really set the lovers off. They began to grind up against each other, skin on skin as they found themselves reaching new heights of arousal. When their bellies reached their limits, so had they. They shut off the pump, tossing the hoses aside, before mashing their faces together, their outrageous lust stopping them from even considering taking it slow. They buried their tongues in each other's mouths as their hands got adventurous, groping every sensitive spot on each other's bodies. When Blake's hand began to grace Yang's puffy lower lips, Yang broke off from their makeout session to lean in nice and close to Blake's ear.
"No teasing, just fuck me. I need this," Yang growled into Blake's ear.
"Fuck me too, don't hold back," Blake whined back. In an instant, both of them were knuckle-deep in each other's cores, fingering each other as if their lives depended on it. They barely flinched at the first orgasm, its pleasure only spurring them on to the next one, and the next one.
The pair completely lost track of time, giving their bodies and minds up totally to pleasure. When they were finally completely and utterly exhausted, they flopped down onto the bed, their skin flushed with a sheen of sweat from the exertion. Their bosoms were heaving as they caught their breath. They held each other close, just taking in the view of each other's plump bodies.
"I… have to admit, I really, really like this," Blake whispered to Yang.
"The sex or us getting fat?" Yang asked.
"Both. All of it. I just want more of everything," Blake answered, her voice sounding almost rapturous.
"Gods, I'm so glad you said that. I was worried I was the only one that wanted this," Yang replied, laughing out of relief. There was a comfortable silence between the two of them as they savoured the moment before Yang spoke up again. "Say, how big do you wanna get? How big do you want me to get?"
"Bigger." Yang was a little surprised at Blake's answer and took a moment to process it.
"Just… 'bigger'?" Yang asked. Blake nodded.
"No limits, I just want us to keep getting bigger and bigger," Blake clarified, her voice making her utter horniness very, very obvious.
"Well, guess there's gonna be a lot of me to love," Yang purred as she pulled Blake in for another long, passionate kiss, this one being much more relaxed than the one they shared while in the desperate throes of pleasure.
The couple kept up their visits to the apartment, drinking the shake until they were full and having sex until they were exhausted. As they kept visiting, they kept needing to drink more and more to fill their bellies, and they needed more and more sex to satisfy themselves. This carried over to when they were up at Beacon. They were slipping into closets and bathrooms for quickies between classes, they were sharing showers for some shower sex, and their hands were even wandering into each other's panties during classes. Their sex drives had skyrocketed, and they were more than happy to give in to those urges.
Of course, their sex drives weren't the only things to skyrocket. Their weights ballooned to ludicrous heights, to the point where it wasn't safe for Yang to be on the top bunk at Beacon anymore. They, individually, could outweigh some teams on their own, and together they easily outweighed almost every team in Beacon and beyond. Their bodies ballooned as they became fat blimps of women. Both of them ended up with large, rounded bellies, with Yang's being rounder and firmer while Blake's had more rolls and hung down further when not contained by her clothes. Beyond that were more noticeable changes. Yang ended up the more top-heavy of the pear by a long-shot, ending up with breasts that needed custom-made bras and heavily altered shirts. Meanwhile, Blake was very, very bottom-heavy, her rear requiring massive skirts just to allow her to maintain her decency, while also requiring her to be very, very aware of her surroundings so that she didn't hip check someone into oblivion or get stuck in a doorway.
Despite their frankly ridiculous sizes, the pair still managed to keep up a respectable performance at Beacon Academy, enough so that the pair managed to graduate and become full-fledged Huntresses.
The couple were laughing with each other as they entered the apartment after their graduation, Yang helping Blake squeeze through the door. In her flowy white dress, Yang looked like a massive cloud, while Blake in her tight black dress looked like a supermassive black hole.
"I still can't believe we got through that without panties," said Blake with a lewd grin on her face.
"Or that we managed to jack off in the middle of graduation," Yang added.
"I really thought we'd get caught once we started fingering each other," Blake admitted.
"Yeah, but we're so good at coming quietly that we don't need to worry about that," Yang bragged. She came up to Blake and attempted to wrap her arms around Blake's belly, only barely reaching her back and not even getting close to getting her hands to meet around Blake's back. "But, no need to hold back now," she purred as she grabbed Blake's dress and lifted it up and off over Blake's head, quickly leaving her in just a plain black bra. Blake immediately retaliated, grabbing and removing Yang's dress too, leaving Yang in an equally plain skin-tone bra, although while Blake's actually fit her, Yang was on the verge of spilling out of hers. The girls then made quick work of their bras and any other accessories they were wearing, leaving the couple nude as they waddled towards the bedroom.
"You set up the shakes and stuff, I've got something I need to grab," Yang said as she shuffled over to the bedside table. She retrieved a pair of bullet vibrators from the drawer while Blake topped up the tank and brought the hoses over to the bed. As the pair sat down on the bed, resting against the headboard, Yang revealed the vibrators. "I wanna see if we can empty that tank in one go. We'll be horny as hell once we're done, so we better set up these vibrators so we can come even if we're too big to fuck." Blake smiled and brought Yang in for a quick side hug.
"I love this plan. Let's do this!" she declared. The couple slipped the vibrators into each other's cores and took the remotes before getting the pump going. As soon as the shake hit their mouths they were in a state of ecstasy and bliss, an arm around their lover as they drank and drank. It wasn't long before the itch of arousal began to make itself known. The girls quickly decided to deal with that by switching on their vibrators. Even at their lowest setting, it was really helping, but it could only do so much. As they drank and drank, they were getting hornier and hornier, squirming in place from arousal. The girls turned up their vibrators, and soon their first orgasms hit. They did their best to control themselves, to make sure they kept drinking without spilling a drop as they came hard.
As they kept drinking, their cavernous bellies began to fill up. It took a while for it to be noticeable, as their bellies were already enormous, but the shake tank had enough to even fill them up. As their bellies bloated with the fattening shake, their arousal rose and rose, quickly bringing them to another orgasm. It felt like an eternity that they were drinking for, but it was the best eternity ever, one of deliciousness and pleasure. Even as their bellies began to reach their limits, aching with fullness, they still felt incredible. Even as their bodies were weighed down by the shake tanks that their bellies were becoming, making it harder for them to squirm and gyrate with ecstasy, they still felt incredible. All they needed was their incredibly delicious shake and orgasm after orgasm.
After goodness knows how long, the tank was finally empty. The pump had nothing left to pump, as it was all in the couple's bellies. With the hoses useless now, the couple discarded them and, through the constant moans of pleasure and arousal, they spoke up.
"Hurts… so… goood!" Yang moaned.
"Need… to… come," Blake gasped.
The pair upped the power on their vibrators to their maximum and leant in for a lazy, sloppy makeout session. The orgasms came hard and fast, rolling through their immense bodies over and over and over again. They murmured out compliments into their kisses, constantly interrupted by another orgasmic moan. They took as many orgasms as they could handle, not that either of them could keep track of how many there were. All that was on their minds was gluttony, lust, and each other. Eventually, the girls finally reached their limits and they had to slow down.
As the girls switched their vibrators back down to their lowest settings, they flopped back onto the headboard, their combined weights making it creak.
"Aah, that was great," Yang said in a breathy voice. "I swear, all I wanna do is have the shakes and come forever."
"Mmm, so do I, but we'll have to do some Huntsman work at some point. Neo's money won't last forever, and we'll need it for the ingredients and for clothes to cover us," Blake explained.
"Yeah, I know. These udders aren't cheap to cover up," Yang agreed, reaching up and giving her enormous breasts a quick squeeze, which managed to pull a sharp, sudden moan from her lips. "Doesn't mean I'm gonna cover up at home. More shakes, more sex!"
"At least, until we're too big for sex… like right now," Blake corrected, running her hand down her belly, or at least as far as she could reach up the curve of her yoga ball of a belly.
"I'm not too big, I could get up and bone you any time I wanted," Yang boldly lied. Blake couldn't help but let out a quiet giggle.
"Right, sure you could."
And so, the girls went on enjoying themselves, living a wonderful life of unbridled gluttony and lust together, even if they occasionally had to drag themselves out of it to do actual work from time to time.
[AN: So, the recipe in this fic is a real weight gain shake recipe, which I can't post a link to because this site hates links, but whatevs, I tried. It'll show up on my posts on AO3 and Deviant, so you can find the links there.
The original recipe included peanut butter and some peanut butter powder, as well as some weight gain powder, but I skipped those and added dust and ice cream to make it more like it'd be Neo's. I've never made the original recipe, let alone the altered recipe from the fic, so I have no idea how it works, but I doubt it's as effective as I made it in this fic.
Also, the spirit of horniness compelled me to write pretty much everything up to their post-graduation scene in one night. Unfortunately, that can only propel someone so far, and I still needed to go to sleep around 1am. Still, I got it done shockingly fast.]