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"What is it you wanted to show me?" Fred asked his friend, Abby, as she led him to her garage. "You know how you're always saying you wish you could cosplay but couldn't find the time to actually make the costume?" She asked. "I don't think I have literally ever said that in my life," Fred replied. "Regardless," Abby told him, pulling a sheet off a large object. The fabric fell away to reveal a metal booth that looked more like a coffin than anything else. "What is it?" Fred asked, running his hand along the cold, steel surface. "It's an instant cosplay machine!" Abby beamed, "Go on, give me a media series and step inside!" "I don't know," Fred replied, removing his hand from the box, "Seems kinda dangerous." "It's not! I swear!" She begged, "Please! I can't do it alone because someone needs to operate the control panel. Every mannequin I put into it came out perfectly fine, not even a scratch." Fred looked at his friend's wide, pleading eyes and sighed, "Fine," and stepped into the booth.
"Overwatch," Fred told Abby. "Alriiiiiight aaaand done," she told him as she set the perimeters. She chuckled inwardly as she spoke to the machine, choosing Mercy, the female support class, thinking it would both show the machine's potential as well as serve as a hilarious prank. "Instructions accepted," the machine replied. "Initiating phase one," Abby said as she pulled a lever which caused a lucite door to slide shut, sealing Fred inside, "Physical alterations." "What? I thought this was just like a clothes machine?" Fred said, worried by the implications. "You can't cosplay with the wrong body; you wouldn't look anything like Mercy," she giggled. "MERCY?" Fred shouted, realizing what she did, and began to bang on the door. "Don't worry, it's completely reversible," Abby laughed, enjoying herself.
Multiple arms extended from the walls, grabbing Fred and tearing his clothes away to be repurposed. Dozens of needles extended forwards, plunging themselves into his legs, butt, chest, scalp, and just about everywhere in between. "Abby!" Fred shouted, covering his mouth after hearing his words both in a female and Swiss accent. His hair grew out from his buzzcut down to his shoulders, turning a shade of blonde that rivaled the sun in brightness. His face grew angular, gaining high cheekbones and a pointed chin as his eyes grew in size, turning to sapphires. "This isn't funny!" He shouted, wincing at his voice. "Says you," Abby replied, observing his changes. The changes continued, his shoulder shrinking along with his arms until his chest started to burn. His nipples grew wider as fat poured behind them, packing on soft, feminine flesh that refused to stop growing. Fred had never laid hands on a set of tits and surely never expected the first pair to be his own, so he was surprised by their sensitivity when he groped them. "Scheiße," he moaned, feeling arousal coursing through him.
"They're great, aren't they?" Abby mocked, watching Fred enjoy the flesh between his dainty fingers. His core was next, slimming down until it gave him an athletic appearance. His hips, however, contrasted this by widening massively, usurping his shoulders as the widest part of his body. His new thigh gap was enormous, but that solved itself as his thighs grew thick with fat and muscle, giving him toned legs that would have people begging to be between. His ass wasn't left out as it expanded, gaining enough volume to fill a chair when he sat down. "Nein!" Fred shouted as he felt the final massive change take place; his junk receded into his body and left nothing but the female counterpart, slick with arousal.
"You're so cute!" Abby said as she initiated the second phase, "Now for your costume." A few spray nozzles emerged around the booth's perimeter, pointing menacingly at the newly minted woman. "Abigail, please," he begged, but was cut off as each sprayer opened fire. They worked around his body, the liquid it shot solidifying into various fabric materials, something that would have been revolutionary itself if it wasn't part of the booth. They painted Mercy's 'Combat Medic' skin onto Fred, a skintight blue bodysuit with a cloak as well as a cute nurse hat. "Done!" Abby said, taking a picture of Fred with her phone as he blushed. "Undo this immediately!" Fred yelled, but his voice was more attractive than intimidating. "Just a moment," Abby told him as she moved to get more pictures, unknowingly turning the voice command on again, "You would make such a cute pin-up!"
"Instructions accepted," the machine said, causing Abby to jump. "Abby! What is it doing?!" Fred shouted as the walls began to close in on him. "I-I don't know! I must've turned on the mic at some point, and something I said triggered it!" Abby stammered as she leaped back to the console, furiously trying to cancel whatever had happened. The nozzles returned, spraying Fred with some new agent that made his skin feel sticky. "ABBY!" Fred screamed as the walls grew closer. "That was this chemical I invented to… oh no!" Abby told Fred as she was forced to watch the walls of the booth crush the woman between them. There was not crunching or viscera, but instead the walls receded and a poster fluttered down where Fred once stood. Abby rushed over and threw open the door, now unlocked.
She scooped up the poster, or rather pin-up, as the machine had interpreted it, and held her friend in her hands. "Fred! I'm so sorry!" She cried as she stared at the Mercy poster that sagged lazily over her hands, "I'll fix this, I swear!"
Now, almost a year later, Fred stared at Abby from the wall she hung her up on, watching her work on another machine. Abby had promised Fred that she'd find a way to turn him back, but Fred has his doubts. Something with the rapid multiple transformations had made the reversal impossible, so he'd probably be watching over his friend for a very long time.