SERN's Weight Supplement Study (Patreon)

WARNING THIS STORY CONTAINS: Steins;Gate Women Weight Gain

WORDS: 5000

Okabe finds himself in a timeline where Kurisu, Mayuri, and his other female companions have signed up to try SERN's new weight supplements. As the girls' appetites and weights grow, the young man struggles to find a way to talk some sense into them to prevent a world overtaken by obesity.

This was a commission for OldReco45 on DA: https://www.deviantart.com/oldreco45

Commission Info: https://www.deviantart.com/eyebeast/journal/Commission-Info-615442807

--------------------------------------------------------------------------------------------------------------

            Okabe never knew what he was going to get when he moved timelines. At first, the one he had landed appeared to be mostly peaceful. SERN had seemed to cease its search into time travel. More importantly, his friends were no longer endangered by the group’s schemes. What was of note was how open the company had become with its research. Specifically, how it made calls out to the public for volunteers to try out their new products. While he tried to warn the others of the company with vague threats, it wasn’t enough. In the end, the need to fund their own homemade lab convinced two of its members to volunteer for the sake of getting extra cash.

            The scene was a mostly familiar one for Okabe. Seated in the lab, the brown-haired, young man clad in a lab coat watched on as his childhood friend, Mayuri worked on a cosplay. As her finger skillfully moved the thread, her elbows ruffled part of the blue dress she always wore. The garment laced with black accents to match her short hair used to be a loose fit around her body. However, that was before several weeks’ worth of SERN’s weight supplement trials had given the formerly dainty woman some “additions”.

            Reeling back her hand for another loop, Mayuri accidentally bumped her elbow into the persistent potbelly sticking out from her mid-section. The momentary fumble made her jostle in her seat and threaten to pop apart the B-cup bra holding back her now C-cup breasts. Recovering from the sudden interruption, she took a moment to adjust her seat and pull her skirt out of her bubble butt before continuing.

            Before Okabe could make another attempt to force himself to speak up about Mayuri’s weight gain, he heard another set of footsteps coming up the stairs. The smell of something warm and delicious came before the sight of familiar, crimson red, long locks. The strands were flung back as Kurisu stumbled in with her arms loaded down with food.

            “Sorry I took so long,” Kurisu said as she dropped the bags off on the table. “I’m not as fast as I used to be for some reason.”

            Standing back from the stash, Kurisu took a moment to catch her breath. The opportunity provided a chance for Okabe to get a look at the way her brown coat had to strain against her own added chub. Her black pants were a tight fit around her plumper buttocks, mirroring the struggle her red tie had with trying not to get stuck between her breasts. Upon seeing the way her belly bulge struggled against the restraints of her white shirt, Okabe finally worked up the courage to speak up.

            “Maybe you wouldn’t have that issue if you were able to control your appetite,” he bluntly stated, gesturing between Kurisu’s gut and the spread of food.

            “S-shut up!” she shouted back. “It’s not my fault that I can’t control the cravings.”

            “Especially when the supplement makes everything taste so good,” Mayuri chimed in, reaching into the food collection to help herself to a box of chicken tenders.

            “The two of you need to exert at least some self-restraint,” Okabe insisted. “Especially when it’s potentially a scheme from SERN.”

            Kurisu’s embarrassment gave way to an exhausted sigh. “Are you still on that theory again? SERN isn’t up to anything shady. They’ve gone clean.”

            “Yeah, you should really calm down,” Mayuri added, holding out a box of chicken for Kurisu.

            Realizing the futility of explaining his paranoia, Okabe decided to go a different route. “Whatever SERN is paying for your participation is eventually going to be outpaced by your eating habits. Not to mention what you’ll need to get larger clothes. After all that, what will you be left with other than extra weight to slow you-“

            Seeing the dagger-like glare in Kurisu’s eyes, Okabe wisely shut his mouth. Retreating to his chair, he left the girls to their food. No longer plagued by his rude comments, the girls were able to fully enjoy their two-woman feast. Seeing them relentlessly chow down, he kept glancing down at their bellies. While their weight gain was concerning, he saw it as a way out of the strange situation. He was certain that eventually, with enough fat and torn clothing, they would come to reason. This plan tried to persist in his mind even as the pair licked clean a pair of boxes before moving onto their third and fourth servings.

--------------------------------------------------------------------------------------------------------------

            Okabe would take any excuse to leave the lab, if for nothing else to keep his mind off of things. Lured by the prospect of further funding for both the lab and their own expenses, Mayuri and Kurisu had continued to participate in SERN’s experiments. On more than one occasion, his tongue had slipped to let out comments he intended to make them realize what was happening to their bodies. Unfortunately for him, those words were seen as merely insults that were quickly ignored in favor of further indulgence.

            As the young man was dreading the inevitable walk back, he spotted Daru waiting outside the front door of the café. The Mayqueen Nyan had been a typically frequent meeting spot for the two young scientists. It wasn’t out of place to see the barrel-like Daru fawning over the maid café when he wasn’t busy fiddling with something in the lab. However, Okabe realized that it had been an unusually long time since he had last joined his otaku companion here.

            “About time you showed up,” Daru said with a tip of his baseball cap and wave of his hand. “Almost made us miss the reservation.”

            Okabe let out a groan. “I know Faris is your favorite, but the other maids can serve us just as well.”

            “Not all of them are the legendary Faris-tan,” Daru replied, leading the way inside the establishment. “Besides, she’s gotten even cuter thanks to her makeover.”

            The mental image of the constantly “NYA”-ing young woman with pink hair styled into twin drills already seemed pretty adorable in Okabe’s head. Sure enough, her usual pair of false cat ears upon her head made her easy to spot amongst the other maids. At any moment, he expected to see her skinny form flaunting around the usual black maid dress adorned with white lace and frills.

            Okabe was left stunned as he finally got a good look at Faris. While she still sported the same hair style and upbeat attitude, her slim form had been inundated with a thick layer of chub. The added weight strained at the seams of a large version of her uniform; leaving little to the imagination when it came to her curves. Despite the added heft, she still swayed around the café, greeting the other guests until finally reaching her companions.

            “Welcome NYA,” Faris greeted, her chubby chin shaking from her warm smile. “I already have your table set up for you. NYA-ow follow me,” she added, swaying around her hips to shake the white ribbon positioned between her thick ass cheeks.

            “Faris, how did you…” Okabe trailed off, having finally learned to hold his tongue.

            “Are you NYA enamored by my fluffy beauty?” Faris asked, purposefully shaking her belly bugle. “It’s all thanks to the NYA-wonderful friends of ours, Kurisu and Mayuri. They told me about SERN’s NYA-mazing study.”

            “Why? It’s not like you need the money.”

            “Because this looked so soft-NYA,” she said, grasping at her belly fat.

            “It sure is,” Daru said, clapping at Farris’s display and forcing Okabe to see how closely the two of them matched in size.

            “I’m glad I have NYA-mazing fans like you that can appreciate more of me,” the maid said as she let her jiggling chub gradually come to a halt. “Let me go ahead and take your order. Oh, and don’t let me forget to get the girls some food to go as well. They deserve a NYA-ice treat for their hard work.”

            As much as Okabe wanted to avoid it, he was unfortunately stuck for the duration of the meal to watch the efforts of SERN’s scheme. Adapting to her heavier figure, Faris made every opportunity to jostle around her fat. Whether it was serving omurice via drawing lines from a ketchup bottle or doing an awkward dance, each motion seemed purposefully chosen to emphasize her new “fluffiness”. While Okabe was left to stare in confusion, the same issue didn’t affect the rest of the customers.

            Faris had always been the café’s favorite, but the cheers she received were louder than ever. Some people kept their gazes glued to her breasts and buttocks as she went through her performance. However, even more eyes focused their attention on her belly as it threatened to plop out. As a seam ripped apart to expose some of gut’s pudgy flesh, a riotous cheer came alongside a bow to signal the end of her dance.

            “NYA, that’s the third uniform this week,” Faris bemoaned as she shuffled back to Okabe’s table. “I’ll have to go back to get fixed up. Don’t forget to pick up the girls’ food on the way out. Have a NYA-mazing day!”

            Paying for the food and exiting the café, Okabe tried to work through how he could reverse SERN’s side effects. Daru was no help; too busy fawning over the picture of the fattened up Faris clutched tightly in his hands. The obvious answer was to simply get rid of the containers loading down his arms to avoid further agitating Mayuri and Kurisu’s appetites. However, that was an even worse idea than insulting their weights.

            Upon reaching the lab, Okabe found another set of food containers already on the table. Each of the boxes had bene left stricken clean of any morsels thanks to the pair of women sitting on the couch. Like Faris, it appeared that their “performance” had ended upon each of their guts slipping through holes in their clothing. Despite the flesh being put on display, Kurisu and Mayuri were far too lethargic to hide the exposure once Okabe made his presence known.

            “Guess you already got something while you were waiting for me,” Okabe said, looking smug as he placed the takeout on the table. “Well once you can get off the couch, you’re free to take these back home to save for-“

            “Sorry,” Mayuri said as he shoved Okabe aside to press her gut against the table and grab at the newly arrived nourishment, “but you came in just in time.”

            “Our appetites are getting stronger by the day,” Kurisu spoke up as she grabbed her own meal. “Er, thank you for the extra meal,” she added, diving into her second course alongside Mayuri; further disheartening Okabe’s attempts to cease their increasing appetites and size.

--------------------------------------------------------------------------------------------------------------

            Under the sweltering sun, Okabe tried to get himself back to the lab as fast as possible. Not helping matters with the heat were the multiple bags of takeout that were weighing down his arms. The amount of food fit to feed a group of six was instead designated as Kurisu and Mayuri’s lunch. While he had tried to fight against their hunger, he knew it was a losing battle. His only condolence was that his outing to get the takeout had let him fulfill a secondary goal.

            Thankfully for Okabe, the location of multiple eateries that the girls liked to order from were right next to SERN’s lab. While he waited for the staff to put together these large orders, he would sneak into the facility to find any info he could. His efforts very rarely got him anywhere useful. There were only so many times he could feign getting lost looking for the bathroom whenever he entered a restricted area. But at the very least, he managed to get a scrap of information from his latest venture.

            As the young man made his way towards the repair shop, he kept going over the conversation he had overheard. Two scientists had been debating the merits of the supplement. The original goal of the experiment had been lost in the chaos of the volunteers’ continued weight gain. However, someone in charge had insisted that they keep the study going. Whether it was the sunk cost fallacy in effect or other reasons, the scientists made it clear that the tests were nowhere near being complete.

            While Okabe pondered if he could potentially sneak into the lab after hours in the hopes of finding classified files, he was nearly slammed in the face by the store’s front door swinging open. Stumbling to avoid falling or dropping one of his bags, he looked towards the entrance to see a large woman adorned in a skintight, blue tracksuit. The outfit worked alongside her equally stretched out, black pants to show off the extent of the heft of her curves. However, her body was definitively apple-shaped thanks to her bulbous gut. Just as Okabe was about to give the large woman a piece of his mind, he was silenced by the sight of her head of familiar, light brown hair tied into a pair of twin braids that flanked her chubby cheeks.

            “Suzuha?” Okabe asked. “What are you doing here?”

            “My job, what does it look like?” she replied with a cheeky grin.

            “No, I mean here,” he clarified, referring to the time traveler being far from her future.

            “Oh, I came for the weight supplement study done by SERN.”

            “To stop them?” Okabe asked, the chance of a way out of the crazy situation momentarily reinvigorating him.

            “Of course not,” she said, using his awestruck expression to grab one of the food bags for herself. “Figured I’d give myself a chance to try them out while they’re still being provided for free.” Before she could claim the stolen goods for herself, they were snatched back by Okabe.

            “Explain,” he said, holding the bag just out of reach of her pudgy fingers.

            “SERN’s supplement leads the way to a new shift in society’s beauty standards,” Suzuhua said. “One that appreciates ladies with a little extra meat.”

            “And you’re okay with this?” Okabe asked.

            “Of course,” she replied, finally being granted her prize. “I was the smallest girl I knew back in my time. This way I’ll be certain to size everyone else out.”

            Leaving Suzuha to gobble down her meal, Okabe continued on to the lab. The one ally he thought he could still count on had left him on the verge of a panic attack. While she had warned him of SERN’s dangers prior, this version of her seemed off. While it could have obviously been due to the hundreds of pounds of flesh weighting her down, he couldn’t help feeling like there was something more. Something that would let both her and the rest of the world so easily give into the organization’s schemes. Lost in thought as he entered the lab, he was nearly bowled over as a pair of large bodies ran up to take the bags from him.

            Getting over the initial loss of the packages’ weight, Okabe was able to quickly recover. By now he had gotten used to being accosted by Mayuri and Kurisu whenever he brought food. However, it was another thing entirely to see the three-hundred-pound women adorned in matching, glittery pink dresses to give them the appearance of magical girls. While it wasn’t out of the ordinary to see Mayuri in such an outfit, he couldn’t help chuckling at the way Kurisu looked.

            “What’s so funny?” Kurisu said through a mouthful of noodles.

            “How did she convince you to wear one of her cosplays?” Okabe asked.

            “It’s the only thing I had on hand to fit her after her clothes ripped,” Mayuri answered before helping herself to a meat bun. “Our last meal ended up ripping through her-“

            “Never mind that!” Kurisu interjected, her attempt at hiding the truth foiled by the pair of ruined pants hanging over the back of the couch.

            The momentary distraction took away Okabe’s worries for a few seconds. That was until a misplaced drop of sauce drew his eyes towards Mayuri’s stomach. Even if she had made the outfits custom-fit their larger bodies, there was a purposefully made, star-shaped hole in the mid-section that emphasized their guts. Slipping past the women as they continued their feast, he sat down at his computer to see if he could figure out a way to go forward with his plan to sneak into SERN. There had to be something more to their plan. He wasn’t about to accept a world overwhelmed by gluttony.

--------------------------------------------------------------------------------------------------------------

            Shortly after the sun had set, Okabe could be found sitting outside of the lab; yet again holding onto a plethora of food containers. After months of giving into Makise and Mayuri’s appetites, he would have hoped that his muscles would have grown alongside their fat. Unfortunately for both him and the world, the supplement’s side effects proved far too strong. Even if he thought he could at least keep pace with the girl’s demands for food, that was before they had made the decision to hold a party at the lab.

            Turning away from the sound of heavy stomps coming from the upstairs room, Okabe turned his attention back towards the sidewalk. What he witnessed was Daru weighed down by even more takeout bags. Looking on the verge of passing out, the bespectacled young man kept pushing on to reach the shop. While it was admirable on its surface, Okabe knew the real motivation behind his friend’s movements.

            “This should be the last of the order,” Daru said, taking a moment to catch his breath. “Well, at least until they finish this off. No telling how long that will last though. Are you sure we can’t just order delivery? We have more than enough money for it.”

            “Considering where the funds are coming from,” Okabe began as he furrowed his brow, “I’d rather use them as little as possible.”

            Daru let out a heavy sigh. “There you go again saying SERN has some mass conspiracy to fatten up the world. You have to let it go.”

            “At least one of us still has to keep his mind focused,” Okabe replied, picking up the food once more and making the climb towards the second floor.

            Upon arriving at the lab and dropping off the containers, Okabe ignored the various streamers and balloons decorating the space in favor of focusing on the new arrival. Taking up half of one of the couches, the meek looking woman’s pudgy face was adorned by squared glasses balanced on her chubby cheeks. Long brown hair reached past her pudgy chins to cover up the open part of her dress shirt that showed off her deep cleavage. However, the long locks couldn’t do anything about the thick thighs and chunky rear swallowing up her green skirt. Nor could she even think about fastening any of the loose buttons in the center around her bulbous, 350-pound gut.

            “Moeka?” Okabe asked, confirming his suspicions as the woman shuddered.

            “Y-yes,” she replied, trying to avert her gaze from him in favor of staring at his phone. “I’m… allowed to be here, right? I read the invitation correctly?”

            Before Okabe could ask further questions, he was stopped by an empty food container bouncing off the back of his head. Turning around, he was met with the furious gaze of Kurisu. The red head was adorned only with an oversized lab coat that had been borrowed from the SERN lab. Aside from demonstrating her flabby belly and bosom, it clued him into what had happened prior to his arrival. Before he could try to capitalize on the fact that her chunky rear had torn through yet another set of pants, he was attacked by another food container.

            Turning to the side, the young man saw a similarly obese Mayuri. While she was a few pounds behind Kurisu, it was barely noticeable. She looked like just another ball of fat contained within a loose-fitting lab coat. While at first Mayuri had shared in Kurisu’s embarrassment at their clothing malfunctions, it was becoming less of a priority as time went on.

            “We invited her,” Mayuri said, bumping Okabe with her hips on her way to sit next to Moeka.

            “She was all by herself in the supplement trials,” Kurisu explained while Moeka shuddered from the sensation of Mayuri snuggling their blubbery bellies against one another. “It seemed like she needed some company.”

            “That’s right-NYA,” Faris spoke up, standing just as heavy but with more confidence. The pride in her obese, pudgy form was all thanks to the extra-large maid uniform custom-fit for her body. Staring at the frilly attire and seeing the way Daru gawked at it, Okabe couldn’t help wondering how much of his own money had gone to clothe the plus-sized cat maid.

            “Nya-ow let’s get this party started,” Faris said, grabbing Moeka’s hand and bringing her over to the food hoard.

            Feeling like the only sane person in the room, Okabe submitted himself to a corner out of the way. Clasping his face in his hands, he tried to go over the notes in his head once more. Despite diving deep into SERN’s database thanks to a severely lax security system, he had gotten every last detail of the experiment. Aside from some unique ingredients, there didn’t seem to be any scheme; no master plan to dominate the world with obesity. All he found were notes from the scientists frantically trying to figure out a use for their bizarre creation.

            Okabe’s desperation came to a halt by a loud creaking noise. Peeking up from his fingers, he spotted Suzuha waddling towards him with a chair in hand. Settling down on the under-sized seat, the blubbery girl clad in a tight tracksuit helped herself to a handful of chips. Once she had licked her lips clean of crumbs, she turned back to shoot the young man a smile.

            “You know this is supposed to be a party, right?” she asked, offering up the half-empty chip bag to him. “At least try to have some fun.”

            “How can you be so carefree about this?” Okabe replied. “I don’t understand how you or the rest of the world is so willing to let themselves be controlled by SERN.”

            “It’s not like they’ll control us,” Suzuha explained. “Thanks to a massive blunder, their recipe ends up getting shared amongst tons of other companies. Helps to speed up the process a bit.”

            “It still doesn’t make sense how people would enjoy having to carry around so much weight all the time,” Okabe said, his exasperation drowned out by ravenous chewing. “They must be miserable.”

            Suzuha let out a husky laugh. “Do they look miserable to you?”

            Looking back towards the center of the gathering, Okabe tried to find some evidence to back up his claim. Instead, what he found was a group of women enjoying food and each other’s company. Even the usually reserved Moeka seemed to be opening up when presented with someone to share her meal with. While there were groans about clothes being tight or getting tired too quickly, they were far outnumbered by the claims of just how great the party was going.

            Okabe broke out of his trance-like state as the empty bag of chips was tossed onto his lap. Watching as Suzuha waddled her way back to the group, he realized that he was alone again. Voicing his surrender with a deep exhale, he abandoned his corner of solitude. Striding towards the gathering, careful not to get slammed in the face by belly fat in the process, he pushed on to see what fate awaited him and the rest of the world in this timeline.

--------------------------------------------------------------------------------------------------------------

            Narrowly dodging the collection of pudgy maids making up the Mayqueen Nyan’s staff, Okabe stepped outside with his arms loaded down with yet another order. Thanks to the café’s altered service offerings, it had become his go to place to find suitable meals for his fellow lab members. This was all thanks to the head maid’s push towards showing off to the entire world a unique kind of cuteness.

            Okabe looked through one of the windows to see that Faris was currently serving Daru’s table. As the woman with pink hair and faux cat ears waddled around Daru, her slow movements emphasized how she outsized the barrel-like man. Rather than shame for her pudgy appearance, she was more than happy to swing around her belly fat for the sake of the clients. Judging by the excited grin on her pudgy face, it was clear that she was enjoying the performance just as much, if not more, than the café’s clientele.

            Leaving the Mayqueen Nyan behind, the young man turned to make his way back to the lab. As he made the trek through the heat, he was nearly bowled over by someone riding by on a bike. What would have been an impressive feat of dexterity for him was made less amazing thanks to the sheer size of the rider.

            Just before the bike was about to tip over, Suzuha made the wise decision to come to a halt a few blocks away from the lab. Slumping up against a wall, she wiped her forehead with the back of her plump fingers to get rid of excess sweat. Letting her chunky rear slam down on the sidewalk, she dug into the takeout bags she was carrying. Upon fishing out a box of fried noodles, she eagerly slurped them up without any care for any morsels slipping out to splatter against her gut and bosom.

            With a nod between them, Okabe and Suzuha shared an unspoken conversation. Just as the girl from the future had told him, SERN’s influence was starting to show its mark. Even outside of the maid café, women across the globe were starting to embrace fat rather than despise it. Still able to connect to the organization’s inner files, he was able to keep track of the rising order for the supplements to the general public. It was this very same success that allowed the initial testers to live comfortably thanks to residual payments.

            Watching Suzuha put away the immense amount of food, Okabe’s mind drifted towards the fate of their more socially meek lab member. Though he had reservations about Moeka at first, the weeks following the party she had made a positive impression with the others. This sense of companionship had allowed them to stay in touch even after she decided to take a further step in SERN’s experiment program.

            As Okabe continued on his way, he glanced over towards Moeka’s apartment complex. He had no doubt that she was still perched on her bed with her bespectacled eyes glued to a screen. The last time the group had paid a visit, she had done very little to obscure how her flabby body was adorned with only an ill-fitting set of pajamas. Spread along the bed, trying to fight off the sweat clinging to her bulbous gut, she made light conversation to thank them for her food before sending them off again.

            Okabe’s reminiscing eventually brought him back over to the electronics shop. Ascending the stairs to the lab, he eyed up the places where the girls had been looking to add a mobility chair to aid with the climb. With more money than they knew what to do with, the planned accessibility device was just one of many projects that now laid within reach. That is, as long as Okabe kept his routine deliveries to keep the two main contributors happy.

            Opening up the door to the lab revealed that Mayuri had not left her spot on the couch. This was all thanks to her wide, over 500-pound body taking up the majority of the space with her chunky rear. The pair of panties tightly stretched around her hips hid very little, but her drooping gut made sure to cover up anything around her groin. Busy stuffing her face with pizza to appease her gut, she didn’t pay much attention to Okabe’s arrival. She only noticed him when she had to stop her chewing for a moment in order to soak up the sweat clinging to her melon-like breasts.

            “Hey Okariiiiin!” Mayuri called out, waving her sweaty, sauce-covered fingers. “You came just in time. We’re almost done with the last few slices.”

            The last box in the massive order of pizza was tossed out, completely empty into the pile in the corner. Turning towards the source, Okabe saw the equally large Kurisu finishing off the last of her second lunch. Grasping a full bottle of soda, she twisted it open and put it to her lips. Craning back her thick neck and beginning to chug gave him a full view of her obese form squeezed into a snug set of bra and underwear, just like Mayuri. The lack of clothing meant that he was free to gawk at her sweat-glistening fat for far longer than usual. He only came back to his senses when she lowered the emptied bottle to let out a belch into her thick elbow.

            “Welcome back,” Kurisu said as she wiped her mouth clean. “Any word on when they’ll be able to fix the AC? I don’t know how much longer I can sit here sweating like a pig.”

            “Even with the added fee for expedited help,” Okabe began, keeping the red-haired woman content with a box of food, “it looks like it won’t be until tomorrow when they can get someone out.”

            “That’s fine as long as we keep the drinks coming,” Mayuri announced as she grabbed a bottle of soda for herself.

            Leaving the women to their feast, Okabe went to sit at his desk. Beside him was a refinished version of the device intended to allow him to send his mind back in time. The reason for pushing so hard for the technology had bene to stop the weight supplement tests from happening. However, that was no longer his priority.

            Turning back towards Mayuri and Kurisu, they appeared to be in gluttonous bliss as they stuffed their faces. It was a scene he had witnessed multiple times with both them and the other, fattened up lab members. Eased by the same sense of indulgence, he completely ignored the device to allow it to build up dust. If this was how the world obtained peace through pudgy fat, he was fine with staying in this timeline. Even if it meant eventually getting much larger couches for the pair of women who couldn’t stop stuffing their faces.