WARNING THIS STORY CONTAINS: Michiru (BNA) Weight Gain
WORDS: 4000
Driven by the strange words of an obese beastman, Michiru uses her shapeshifting powers to learn of the animalistic joy of being weighed down by tons of fat.
This story was done as an entry for a contest held by Princess of Smut: https://bsky.app/profile/princessofsmut.bsky.social
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For the first time in a while, Michiru had the entire house to herself. Considering how much she had been through saving Anima City, she more than deserved some rest and relaxation. While most of the time this could be done through simple sleep or time on the basketball court, this evening was saved for something special. Something that had been plaguing the young beastwoman’s mind for quite a while.
Standing in her room, adorned in her usual grey tank top and gym shorts, Michiru tried to take in the full visage of her body. The mirror showed off the bushy, blue tail matching her short hair that marked her as a tanuki beastman. This fact was further cemented by her pair of brown, pointed ears and the thin layer of lighter tinted fuzz across her body. Peering in close to the mask like markings around her eyes, she remembered how initially put off she was by her animalistic form. While she had grown accustomed to her animalistic appearance, she still felt there was something she hadn’t fully explored.
Unlike other beastmen, Michiru held the astounding ability to alter her body to whatever she desired. Things like stretching limbs, going invisible, and even flight had all been capable through a series of different transformation at her whim. While this collection of countless possibilities afforded various ways to experiment with her body, at the moment she was focused on exploring a unique feeling she had experienced a few days prior.
“What did that woman mean?” Michiru pondered to herself as she scratched her chin. “The joy of fat?”
The comment had been overheard when Michiru had been passing by a restaurant the other day. At the time, she found herself drawn towards a specific table thanks to the sounds of ravenous eating. When she arrived, she couldn’t stop staring as she watched a beatman, in full animal form, scarfing down a feast that made the tanuki woman’s head spin. Despite the attention the woman was drawing and the mess she was making, there was a sense of strange bliss on her face that stuck in Michiru’s mind.
Lifting up the hem of her shirt, Michiru pinched at the miniscule amount of fat around her mid-section. Through the use of her abilities she had changed herself in a myriad of ways, including bulking up with extra muscle. Never had she considered if there would be any benefits to fattening herself up. Glancing back at the mirror to look over her fairly slim figure, the young woman didn’t know the next time she would get the chance.
Closing her eyes, Michiru attempted to focus on the woman she had seen that day. With the mental image clear in her head, she opened her eyes again to see her button nose morph into a flat snout. The same phenomenon made her ears floppier and replaced her bushy tail with a stubby, curly one. While these were expected features of a pig, they weren’t her end goal. Pushing a little further, she tried to beckon forth the weight befitting of these features to spread across her body.
Michiru’s efforts bore fruit as the bottom part of her top began to lift up. Progress was slow at first, with her increasing belly fat taking its time to fully cover up her view of her waistline. Eventually, her gut managed to engorge into a sphere large enough to leave her pushed out belly button visible while obscuring the view of her feet. Giving her hips a small shake to jiggle the mound of chubby fat confirmed that it was really her own.
Still trying to comprehend her newly formed potbelly, Michiru wasn’t really prepared for when her chest expanded out to match it. As her tits strained the fabric of her top, her plumper nipples became visible through the clear impression left in her shirt. Stopping at a size comparable to her own head, the breasts jostled along her gut to prove their authenticity.
Michiru couldn’t help letting out a small yelp as her shorts began to dig into her widening hips. Struggling to look over her shoulder with the extra chub around her neck, he managed to see her curly tail bounce along with her engorging rear. Easily going past the definition of a bubble butt, her backside only slowed down once a ripping sound echoed through the room. Reaching down to make use of her thicker fingers, she winced as she discovered the hole in the seat of her shorts that showed off her panties getting eaten up by her new asset.
By the time the added fat was spreading across her limbs and the rest of her body, Michiru developed a semblance of her figure. A few stomps of her bulkier legs let her feel out the extra heft as it jostled around. Managing to waddle her way onto a scale, she watched it shoot past the max weight. Having to guess that she had stopped around the 600-pound mark, she was a little freaked out by the fact that she had overshot the size of the woman that had inspired this crazy experiment.
“This is it?” Michiru asked herself as she glanced at her pudgy body in the mirror. “Now I’m a literal pig with a body that could barely fit through most doors,” she continued, reaching out towards her belly bulge with the intention of pushing it back in. “What was I thinking giving myself a gut like this? That woman probably just a thing for stuffing her face in public in front of…”
Michiru’s touch turned into something else as her fingers sunk into her gut’s soft pudge. She was prevented from moving any further as the touch sent a strange tingle across her newly gained fat. Without even thinking, her digits proceeded to squeeze at the flesh to recreate the sensation, albeit with a much more pronounced effect. Fur standing on end from her own touch, she let her hand continue to roam to grope more of the fatty lump. As her palms slipped beneath her shirt to play with more of the sagging orb, she felt the waves of pleasure spread through her newly acquired back flab.
“I-is this what she meant?” Michiru asked herself; pulling away her trembling hand and watching as her body continued to jiggle in unison with the pleasurable sensation. “Is this…feeling real?”
Spurred by curiosity, she left her gut alone for a moment and brought her hands elsewhere. Slipping in through the top of her shirt, she embraced one of her engorged teats to give it a gentle squeeze. The soft press was enough to make a gasp leave her lips and convince her that the added sensitivity wasn’t secluded to her mid-section. Upon giving her other breast the same groping treatment, her mouth opened wide to let out a moan that shook around the chub hanging around her chin.
“This is HISSSSS amazing,” Michiru said to herself; her whole body shaking as she continued to shift around her enlarged breasts within her tight shirt.
Though she had no hopes of fitting her pudgy digits into her shorts, the hole in the back proved to be a blessing in disguise. Sinking her hands into her bountiful, fuzzy ass flesh, she chewed on her lips as she rode out the sense of euphoria. Rather than fully succumbing to temptation of the wobbling pair, she curled her plump toes as she tried to make herself last as long as possible. Giving in to her built-up desire, a tight squeeze to each of the meaty mounds made her entire body shudder. As the tremors reached from the tip of her curly tail to the peak of her floppy ears, she was able to fully embrace the main benefit of her heavier form.
Coming off of her self-groping session, Michiru once more turned towards her reflection. Seeing her snout shudder with each squeeze gave her a better understanding of what the pig woman was talking about. Letting her mouth hang open as she continued to enjoy her bountiful flesh, she couldn’t help herself from losing herself to this new desire. At that moment, the only thing that her mind seemed to be able to focus on was experiencing as much of the euphoric feeling as possible.
“This is so MMMMPPHH amazing,” Michiru said as she took a moment to nuzzle her chin fat against her thickened up neck. “No wonder that lady was stuffing herself like crazy. If I had known about this sooner, I would have done the same to make myself as fat as possible.”
A stray thought passing through Michiru’s mind stopped her groping session. Bringing her hands away from her gut just before it completely slipped from her top, she waddled her way back over to the mirror. If she stood a few feet away, she could just barely fit the entirety of her girth within the frame of the reflection. As she shifted back and forth, jostling her gut for more pleasure in the process, she couldn’t help thinking how much better it would feel to have more.
Keeping her urges at bay with intermittent squeezes to different parts of her body, Michiru pondered how to make the best of her epiphany. Closing her eyes, she tried to think of the various types of beastmen she had seen during her time in Anima city. Though there were plenty of options, what her mind eventually settled on was a group of brutes that she had barely avoided wandering the streets one late night. While the thugs were a terrifying presence, one of the member’s fearsome visage provided the perfect inspiration.
With the image fully conjured in her mind, Michiru bid farewell to her snout and floppy ears. The curly tail hanging above her plush rump straightened out; the process doubling its length and threatening to get it stuck between her butt cheeks. Rather than return to their normal shapes, her ears altered themselves to be longer and more rounded at the tips. As for her nose, the nostrils deepened and spread across the middle of her face to accompany her wide maw with adequately large teeth.
Equipped with the features of a hippo, Michiru was able to use them as focal points for her next step of the process. Just as she had hoped, the majority of those enhancements came in the form of swelling up her gut with added girth. Her shirt only lasted for a few seconds before the growing ball of doughy flesh tore it to shreds. The tattered pieces of fabric clinging to the engorging mass of fat meant little to her. Gritting her teeth, she slowly reached her pudgy fingers out to clutch at her added layers of fur-covered flab with sinful delight.
Michiru’s self-indulgence was halted partway through thanks to a sudden unsteadiness. Having momentarily lost control of her transformation, she had completely lost track of where some of the weight was being placed. The extra mass concentrated on getting rid of the rest of her shorts by thickening up her hips and thighs even further. At the peak of her triple-wide rear’s growth, it had managed to outpace the layers of fur-covered fat bulking up her legs. All semblance of balance was lost the moment her panties popped apart and flew across the room.
The still growing hippo woman’s fall to the came with a force powerful enough to shake the entire house. Despite feeling like she was about to make the walls break apart, Michiru herself was left unharmed thanks to her blubbery backside. If anything, the sudden slam gave her a plethora of ripples going through her fatty form for her to enjoy. Chewing on her lip as she reveled in the sensation, she didn’t bother trying to get up. She had all she needed right there.
Following the path of the lingering jiggles, Michiru shrugged off the remains of her top to leave her pair of watermelon-sized breasts fully visible. While each part of the meaty spheres was tantalizing to see and touch, she knew where she wanted to start. Without any hesitation, she clutched what she could of her plump, dark colored nipples. Even with her hand’s added girth, she couldn’t fully grasp even half of the full size of her tits. Still, she had more than enough to work with as she set out to explore every inch of the sensitive meat sacks.
As Michiru’s moans became more frequent between her heavy, husky breaths, she took the opportunity to spread her attention to the entirety of her thick fat. Whie her ass and gut were obvious focal points; she roamed across her body to find other means of getting satisfaction. She took care to feel up each of her plump toes to compare them to her thick, sausage-like fingers. Starting with her chunky cankles, she moved up over her thunder thighs to give attention to her lardy love handles. As her hands continued to roam across her body, she added further excitement to her self-exploration by shaking her rows of chins to further indulge her new obsession.
Michiru reached her peak as she let her wide maw fully open up to let a moan echo through the home, unhindered. Ears flickering at the reverberating sound, she was certain that someone had heard her. At any moment, she expected another person to run into her room to see what she had become. Her mind could already picture the moment someone took in the bizarre sight of a two-ton hippo woman. Even if she tried to get away, she was certain that the most she could manage would be crawling on all fours while belly and breasts dragged along the ground. Rather than shame for what she had become, the fantasy only furthered her drive to continue groping herself.
“If people are going to see me,” Michiru muttered to herself as she looked back at her visage in the mirror, “I should put on the biggest MMMPPPPPHHHH show I can.”
The declaration was one borne of a feeling that grew alongside Michiru’s body. In her very bones, she could feel an animalistic instinct that resonated with the sensation that bigger was better. For a more simplistic creature, this would have succeeded in ensuring she was either too big for predators to attack or the apex predator herself. As for Michiru, her only desire was to have more flesh to play around with. Thankfully, her next choice of form seemed more than adequate to satisfy both causes of her urges.
Grabbing onto her bed, Michiru managed to slowly pull herself back to her feet at the at the protest of the frame’s limits. Standing on shaky legs, she waddled backwards to allow what she could of her body to be seen in the mirror. Just barely getting her hips into frame, she stared at her flabby form with longing eyes as she thought up the details of her next stage. She showed off her wide grin once she felt the first shudder of change cascade through her.
Michiru’s comparatively small tail got a boost in an attempt to better match the rest of her girth. Partially surpassing how far her ass cheeks jutted out, the appendage continued to grow out until it couldn’t support its own weight. When the tail inevitably came slamming back down, it was with her new, horizontal tail fins slapping up against her ass fat. Reveling in the smack that sent ripples through her bountiful flesh, she held back her moans as she moved on to add the next step.
From within her expanse of back fat, something began to rise up like a shark from the sea of thick, fur-lined flab. The growth of her new dorsal fin came with a sudden push that made her stumble into the mirror. While she managed to recover, the bounce against the wall gave her breasts and belly their own turn to revel in their own girth. Gritting her teeth as she endured the sense of pleasure, she tried to tell herself that she needed to wait until everything was in place.
Raising back to her full height, Michiru let her gaze center in on her nose. The wide snout became narrower as it stretched further out. Ending with a rounded point, her new mouth facilitated a mix of blue and orange fur to leave circular patterns around her eyes. Staring at the familiar image she had seen before, she couldn’t focus on whichever one of Nina, the dolphin girl’s friends she wanted to emulate. Instead, what she decided on was the biggest, aquatic creature she could think of to ensure one of the largest sizes possible.
“Yessss,” Michiru hissed as she watched her belly double in weight within a few seconds. “More. I need MMMMMMPPH more.”
Her body was more than willing to give her what she wanted as her tail and ass cheeks gained similar amounts of mass. Though it did cost her the use of her legs as they were thickened up, that didn’t matter to her. Even if she could move her massive, bed-sized ass cheeks from off the ground, she got what she wanted from constantly slapping her thick tail against them. Too absorbed by the ripples of pleasure that came from the wobbling mounds, she couldn’t hear the creaking of the floor below.
Without taking a moment to concern herself about just how big she was growing, Michiru moved her focus towards her chest. The result was the creation of a set of breasts that could have each crushed a full-size adult within their sagging, spherical forms. Her hefty tits’ inevitable slam against her belly served to further entice her to their size at the cost of their shapeliness. The impact sent most of the things in the house collapsing to the ground, but that was of little concern. Nor did she seem to worry about how the tips of her plump teats were pushing up against the wall halfway across the room.
“This isn’t MMMMPPHHH enough,” Michiru muttered to herself; becoming drunk on her own sense of euphoria. “Whales can be so much MMMMPPPH bigger!”
Willing her body to give her just a bit more, Michiru was able to get the rest of her features to come alongside her. As her mass surged with extra weight, the once moderately sized room began to squeeze against her on all sides. With each of her blubber-laden arms smooshed against opposite sides of the room, the drywall started to crack from the pressure. Below, the floor began to buckle as it had to contend with the multiple tons of fat. With her pudgy head hitting up against the ceiling, her form managed to fill up every last bit of space available. And yet, it still wasn’t enough.
“Just a little MMMMMMPPPHH more!” Michiru shouted out with her husky voice, willing her powers to go just a little further.
Thankfully for her, the room managed to break before her body did. As drywall on all sides crumbled away, her massive, blobby form was allowed to fully stretch out. The remnants of her room that didn’t get stuck within her folds inevitably tumbled out onto the sidewalk below. Any other bits of rubble created from her sudden expansion were inevitably tossed through the air as she relentlessly jiggled herself around to make the most of her newfound girth.
Able to feel the night air against her flabby form, Michiru was caught in a state of pure bliss. She couldn’t move much other than a meager shuffle, but that was all she needed to make her bountiful folds cascade with added sensitivity. Though she yearned to physically grasp at her exposed breasts and buttocks, she got what she needed as she managed to slap the fleshy orb against one another. Feeling her belly slouch forward to rustle against what remained of the building, she let her thick neck crane upwards to let her next, pleasurable echo out with inhibition.
Michiru’s moment of pure ecstasy came to a halt as she heard a scream in the distance. Straining her chins to look around, she took notice of the people slowly gathering around her. Careful not to be caught in the leftover destruction of her growth, the citizens of Anima City gathered around to gawk at her. All of a sudden, any pleasure she could derive from her current state couldn’t contend against the deep feeling of humiliation that brought her back to her senses.
Sent in a panicked state by the outcry of a bird beastman above, Michiru did everything she could to fix the problem. Closing her eyes, she tried to will away her changes and bring herself back to normal. Though she did feel her tail return to its bushy self, the tip still grazed the very peak of her deep butt crack. The loss of her dorsal fin threatened to send rolling off towards the street below from the sheer mass of the pair of tits she had been obsessed with moments beforehand. As her snout returned to her much shorter, yet still pudgy face, she was able to look past her button nose to see that the tons of fat making up her belly fat had yet to leave.
If Michiru squinted her eyes, she could see her body very slowly starting to shrink down. At the going rate, it would be multiple hours before she would even lose a quarter of the weight. Considering how many people were already starting to gather, she realized that she was going to be in for a long evening of dealing with the consequences of her overweight overindulgence.