Sarah was exited. A local convention that she always went to now allowed transformations on the convention ground. She had always wanted to do a transformation cosplay.  She went to the store to buy a cheap cosplay that would transform her whenever she wore it. She eventually found herself standing in front of the Monster Musume section. Specifically in front of a pair of yellow rain boots and a yellow rain coat. She got it at a low price and went home to try it on.

After getting out of her clothes to say them from the slimy mess she was about to become, Sarah stepped into the boots and slipped on the coat. When her foot touched the bottom of the boot, it felt wet. This feeling crawled up her legs as the didn’t seem as solid anymore. As the feeling rose, she could finally see the changes coming out of the boots. Her legs were changing from their tan color to a see through blue. This color change kept moving up her body, swallowing Sarah’s private parts. Sarah reaches down and put her hand into her leg, feeling the gooey substance that would soon be her body. The changes soon swallowed her stomach and her breasts, which seemed bouncier now that they were just slime. The changes swallowed up her arms as the final changes began.

Her hair started to clump together. It became slime like the rest of Sarah’s body but was green and wasn’t as see through.  It draped itself over her shoulder, yellow at the ends when one started lifting itself up on top of Sarah’s head. Sarah found she could wave it around. Sarah walked over to her sink, bouncier due to her new body. She put a good amount of water in the sink before using her new tendril to suck it up. Her body started getting bigger, her breasts and thighs swelling as her body mass increased. After reaching a good size, Sarah set off for the convention.