Story by  Metroid711 - Isabella finding a strange cosplay machine at a convention that's a little more thorough than they were expecting

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Isabella would take a step through the doors after fully signing in and getting their lanyard pass. They had attended many a Comic-Con but this one in particular was special. Besides the usual slew of fantastic costumes, cosplays, events, and merchandise of all kinds, this one advertised something known as a “Cosplay Machine.” It marketed it as some kind of costume generator, and while Isabella usually brought their own cosplays to wear, they wanted to give this a try just to see how it worked. It took a bit of wandering around, of course checking in booths that interested them along with any particular cosplayers they wanted to take pictures or compliment.
Eventually they made it to a set of large double doors sporting a colorful sign: Cosplay Machine. There were a few people lined up to head in, with the exit assumedly being on the opposite side, as they didn’t get to see anyone leaving. Once it was their turn, they had to show their pass and the doors were opened for them. The hallway heading inside was somewhat techno, with colorful lights flashing. A set of tinted glass doors were closed at the end of the hallway, with a touch screen on the wall right next to it. A credit card device to pay for a cosplay would flicker, the digital text sporting “10 dollars” scrolling across it, which wasn’t too bad in hindsight.
They would pay for it, and the screen would light up with a search bar and a number of categories. Tons and tons of pictures of characters from across all forms of entertainment. They would pass by several choices that interested them; however, they would put in a specific name for the cosplay they wanted to try, Nia. The well-loved, sassy Welsh kitty from Xenoblade 2. Once she was selected, Isabella would step up to the tinted glass doors as they opened for them. Their tail would sway back and forth a little in anticipation, with the doors closing behind them as they stepped in. The inside of the machine was a large chamber about the size of a walk-in closet, with several metallic plates and flickering neon squares surrounding the fey. In no time at all the machines would whirr to life as they would step around to stare at it. Some of the plates would tremble and slide open, robotic arms popping out and rotating around them.
Some shining bright green segmented light over their body, assumedly scanning and taking their measurements. And after a small moment of silence, the machine would clammer to life. The dragon would find themselves being gently massaged by a set of robotic gloved hands firstly, making sure they were nice and relaxed as they let out a happy sigh. However, this was for another reason, unbeknownst to Isabella, the massages were stretching and reshaping their very DNA, with their yellow furred skin starting to brighten. With every crease and knead it would get slightly thinner and more feminine, with pale pristine human skin taking over in patches across their arms first. Their hands softly held as they were thinning, becoming more feminine and daintier with a bit of a toned strength to them.
Isabella would be none the wiser, especially as the hands would crease and push in their waist to make it slightly curvier and more toned. This would pump out their hips to grow rounder and wider, with their thighs being swelled out to be much more toned and thicker. This of course was followed up with the yellow fur and skin creasing away for the human skin that glistened and almost pristinely glowed in the neon lights. Their chest was pat and rubbed down, made a little softer and flatter, a smaller bust than they usually had; but this was also the point when they noticed what was going on. Before they could exclaim, a hand would push against their muzzle and cheeks and begin to rub and massage it, making their head feel a bit fuzzy as it would start to shrink their snout. The yellow fur flattening as their larger nose would begin shrinking and shifting to be smaller and girlish.
Their resistance was dwindling as they leaned into the amazing sensations of the molding and sculpting of their entire body. It felt just too good to have all that fur be smoothed into such soft and perfect skin, with a nicely sized body to match. The hands would tilt their chin up, conditioning their body down further as it was shrinking in height, losing a couple feet as their muzzle was shrinking in further and further. Another set of gloved hands would massage and knead their scalp and horns, with the latter getting smaller. Their ears were tugged and pulled up in place of the horns as well, starting to merge with their hair as it was shortening and shifting in hue. It was going from a pastel pink to a lighter platinum blonde color. With the newly forming feline-like ears mering in color and shape with the newly sculpted hairdo. Their once messy pink casual look had been reshaped into a bob cut, with two sets of hair tied up with yellow bows.
Isabella’s pink eyes began to swirl as their face and cheeks were pushed and massaged, two hands beginning to rub their tail as it would lose its feeling. It became number as it would soon be nothing but more of the soft human skin, with their rear sculpting to be a bit jutted out to match the hips and thighs. With the last pieces of their body succumbing to the gorgeous human-like aspects. Their face was fully being sculpted, the last finishing touches being performed with their eyes becoming a nice light gold color, along with being larger and more stylized. Their face had triangular white like markings in their skin that surrounded their face, with their snout fully massaged into a smug smirk and dainty nose. They felt their neck massaged as their usual voice would gain a thick Welsh accent. One that was rough and feminine but also commanded a slew of tomboy smarm to it.
Of course, they found their body fully changed, but what would come next would take the cake. Their current outfit would be pulled off by the gloves as they would reveal several articles of cosplay. Starting off with a tight yet comfy yellow jumpsuit that was pulled over their feminine and catty body. It would be zipped up nice and tight as they, no, she would smirk as she patted down the outfit. Her dainty arms would be slipped into thick patterned gauntlets, perfectly attaching to the ends of the overly puffy sleeves. With her hands finally being slipped into soft white sleek gloves. All of it rubbed against her new supple skin and she couldn’t help but blush at the new sensations of the body. For 10 dollars she really was becoming the character, the ultimate cosplay as several accessories were added to the outfit. A fluffy red and white scarf collar with a black choker around her neck. Arm bands, a belt sporting sheathed daggers and a gold belt buckle. And finally, her legs were squeezed into big overly designed boots that clanked whenever she walked.
She felt heavy and snug inside the layers of clothing and accessories, but she didn’t mind at all as she felt one last touch be added. The hands would massage her newly changed prettied up head, and Isabella felt new memories fill it. Her eyes began to swirl in glee as she felt Nia’s personality and mannerisms become like second nature to her. She felt entire new memories added to her old ones, so she could perfectly and pristinely play the character. Or rather, play herself~ While Isabella remembered everything before, she concluded she was more Nia now. The hands retracted and the outer doors opened to another area of the convention. Several others who were perfect copies of characters were walking around talking. And as the cat-blade woman stepped out: she took a deep breath, gave a smug grin, and was ready to take on this convention, the best Nia she could be~