Fox and Yuma take a little walk in the park for a bit of exercise. Of course, with the way they fight, it's certainly not about dropping pounds.

slight CW: there's knife play and electricity play KINDA SORTA in that they are stabbing and electrocuting each other, but like in a fantasy rpg kinda way.

This started as a warm up, but then the muses struck and I was like hold on this is kind of fire. For those of you who enjoy weight gain combat and the like, I hope you enjoy this very much! Fox usually uses fox as a pronoun, but generally in writing that's not really uh, feasible, so I take the L and just use they/them in those moments. Ninjas are so cool, and Yuma's the coolest Ninja I know.

I also have a patreon! it's under review at time of upload but maybe that will resolve quickly. I've only got one paywalled story to put there rn, and I'm gonna upload my full back log as just like, another gallery? but yeah, it'll be full of good stuff before long and even if you just wanna like, kick me a very small amount, sweet jesus do I appreciate it.
https://www.patreon.com/user?u=2434565

If you enjoyed it and want to support me in continuing this endeavor, a tip to https://ko-fi.com/ancocalcen would be super fucking nice :3 And if you're interested in commissioning me, send me an ask on tumblr https://www.tumblr.com/blog/anco-writes
I do no have any other means of income and every little bit is amazingly helpful as I haven't had anything come in for a good long while.

AGAIN, JUST FOR EMPHASIS, THIS IS FOR THE PEOPLE WHO ARE LIKE "I liked that, but it would be weird to comment" IT'S NOT WEIRD IT WILL MAKE MY DAY! Or maybe it is weird if that's what you're into, I know I love being weird.
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Swelling Scuffle
By AnCo Calcen (Fox, Yuma, Conrad)

On a brisk autumn morning, a short fox with fur bordering on tan and a swooping head of orange hair that terminated in gray tips scampered across the lush grasslands of the Demesne, a smile of pure excitement on their face. Following a short distance behind was a wolf with blue fur who the diminutive fox managed to make look tall by comparison. The two were quite diametrically opposed, the small fox lanky and excitable, as compared to the wolf’s chubby frame and calm demeanor, though the way the fox stopped every once in a while to look back at her spoke to the good relationship between them.

The fox spun around again and called back to their companion. “Do you think we're far enough out Yuma?” They were hardly in the wilderness, as in the distance massive steel and glass buildings dominated the skyline, but the park they were in was mostly deserted, and they were far enough in that the sidewalks couldn't be seen.

Yuma stopped when she heard the question, ears twitching as she closed her eyes for a moment, before nodding. “Yeah, I think so.” She'd been wearing a puffy jacket and some jeans that hugged her impressive thighs, but the jacket was shrugged off to reveal the black tank top beneath. Without the covering, her arms were on full display, the layer of fat on her biceps only serving to make them look even larger. With that one subtle motion, her strength and agility which were normally hidden became readily apparent to the giddy fox.

“Oooo, this is exciting! I've never fought a real ninja before! I hope I don't looooose~” the fox, simply named Fox, certainly didn't look like a good match for Yuma. The black t-shirt they wore had the sleeves torn off, along with rips in their loose fitting jeans that were evidently self inflicted by the knife they suddenly flicked out into their paw, and through the sparse clothing, no hint of hidden strength was belied by their physique.

Yuma chuckled at the sight as she lowered her stance a bit, two kunai being drawn from seemingly nowhere into her paws. “Most people I've taken out haven't either. Normally I wouldn't be taking someone like you head on. I wouldn't be so sure I'm at an advantage.”

Fox’s eyes sparkles in wonder at the sight of her special weapons. An avid knife enthusiast, seeing such unique tools was already a blessing for them. The knife they held was somewhat ornate by comparison, but hardly remarkable as a weapon. “Well I appreciate the vote of confidence! So uh… how do we do this? Count to ten? Should we go back to back then take three paces?” Unlike Yuma, Fox wasn't taking any sort of bespoke combat stance, just standing there with weapon drawn.

Yuma took a deep breath before nodding. “I'll let you make the first move. If I had the initiative I'd be going about this completely differently, the fact that we're going face to face is a sign something went wrong.”

For a brief moment, Fox considered the angle of their attack, the gentle breeze rustling the grass of the park. With no forewarning, Fox was suddenly accelerating towards Yuma with alarming speed, zig zagging through the space between them. Yuma could clearly see the orange glow of magic around Fox’s free paw, and the effect of it was clearly felt as her boots suddenly sank a few inches into the earth.

With their target now rooted in place, Fox figured it would be an easy feat to just plunge their weapon straight into her. Less than a second had passed before the gap was closed, and their blow homed in like a missile, coming in from the side. Before the blade could make contact however, Fox felt a shifting of their own momentum, the stab cleanly interrupted with some sort of Judo throw that sent them flying straight past Yuma.

Slightly disoriented but not dissuaded from their goals, they landed with grace and immediately lunged again. To their shock, this time the attack connected, only for their target to suddenly release a puff of smoke and vanish. Fox stopped in their tracks, a look of confusion and surprise spread over their face, before a snap movement blocked a slash that came from behind.

The grin of triumph at the foiled ploy was short lived as Fox suddenly found themself flying backwards from the force of the blow they'd blocked. The reasoning why was evident, the kunai they'd managed to block had actually been swirling with wind, and on making contact, all that gust was released. Soaring through the air for a moment, Fox tried to flip their balance and land on their paws, only to find they flipped a bit more than expected. The little fox tumbled in the air more than they should have, skidding off the ground once and getting a surprising amount of bounce. When they skidded to a stop, they finally understood why.

Their once slim belly was currently puffed out and drum tight, the air from the blade having somehow transferred through the force of contact directly into Fox’s body. Their ears twitched and cheeks burned under their fur as they curiously prodded at their belly before yelping as they noticed it was getting larger still. For now they just looked bloated, but they were slowly inflating like a balloon.

To make matters worse, Yuma was pressing the assault. Fox's first instinct was to block this next attack, but they dodged at the last moment instead. A brief dance followed suit, Yuma’s wind kissed kunai swinging at Fox who dodged while occasionally attempting counter swings. Such a counter offensive proved counter intuitive however, as one particularly promising blow was parried by Yuma. The mistake was realized a second too late as blades clashed, and Fox was once again blown across the park.

A distinct hissing sound emanated from their belly as they came back to the earth, able to adjust for the change to their balance this time. They got more air than last time, but landed far more gracefully, even as their belly pressed out into a big orb. Fox didn't have time to appreciate it however as he noticed that the wind on Yuma's weapons had finally disappeared.

Not deterred, Fox put their new lighter weight to their advantage, and figured now would be the perfect time to launch a counter offensive. They sprung high info the air, trajectory offset by sigils that appeared beneath their paws they could kick off of. Despite the speed and agility on display, it seemed taking to the sky was a mistake.

As soon as Fox was sufficiently high, Yuma twirled her kunai and clasped her paws together in a few hand signs, and a bolt of purple lightning suddenly manifested and struck straight through Fox. They experienced an incredibly brief bout of paralysis, causing them to mess up their next jump, and to make matters worse, they weren't nearly as light as they'd been before.

Crashing down to the ground, Fox could barely register the way their cheeks puffed out or the tightness of their pants before Yuma had once again closed the distance, this time her paw crackling with residual lightning energy. She slammed it into Fox’s belly, and held it in place as energy surged from her into them.

This time the swelling was far more pronounced. Soft blubber erupted across Fox’s frame, the inflation from earlier causing most of the weight to hang from their gut, even though their limbs and chest were very much steadily fattening as their weight doubled and threatened to double again.

Fox at least noticed that Yuma still had her paw planted on their gut, and seemed to need to keep it there. They tried one more desperate attack, plunging their knife towards the wolf, only to stop partway through the motion as her kunai pierced their bicep. No pain was associated, but a strange numbness overtook Fox’s arm as they dropped their knife.

Then they began to fatten in earnest.

Venom from the knife coursed through Fox’s body, mixing with the strange magic electricity, and their growth kicked up to an exponential degree. Fox was already looking tubby, but now they were a proper fatty of a fox. Their already ripped jeans shredded around a massive ass and thick jiggly thighs that struggled to support that belly that was encroaching on the ground. Their shirt split down the middle, flabby tits raining out and slapping the surface of their gut, all while they stood there, tongue hanging out of their flabby face.

Bigger and softer they swelled, until eventually the lightning and venom ran their course. Fox stumbled back, one fat arm flailing about as they tried to pull out the kunai still lost in the flabbiness of their other bicep, before they slammed down to the ground, knocking it free.

Yuma planted her boot in Fox’s navel and rolled the blubber mound around as she grinned in smug satisfaction. “Yield?”

Huffing and puffing, the bloated fox slowly nodded, squirming as they spoke. “Y-yes! I yield!”

“That's what I thought. Wanna go get lunch, big fox? I'll pay~” She took her foot away, moving closer and planting a kiss on the flab filled fox’s cheek, along with a lick that pressed into the delicious flab.

Immediately, some pep returned to the fox as they nodded enthusiastically. “Yes please! Being this big makes me hungry… Huff… err…” they squirmed a bit as they spoke, before eventually flopping back with a whine. “Can you help me up? Too big to move, ehehe…”

“Ah, that makes sense… I usually try to leave my target's as immobile as possible, or as close as possible. Hmmm…” She looked over their frame, before snapping with a pleased expression. “I know, I'll just make you bigger, then I can roll you around town.”

Fox yelped in shock as the other kunai was wedged deep into their navel, a gurgle and belch issuing as they suddenly started to fatten again.