Mary and Jake had a bit of problem. They wanted to go to a local convention in cosplay but wouldn’t have the money to do both. Jake came up with an idea that would solve both problems.

“Why don’t we get one of those costume and character combo packs? One of us becomes the costume and that way we only have to pay for one ticket?” He said.

Mary looked up the list of characters that the deal applied too. “The only interesting one I can find is for Shaltear Bloodfallen, from Overlord. I’ve watched the show and her character is great, her outfit is awesome too.” She said.

They ordered the serums and the day of the convention arrived and the two were left with the important question. Who became what?

“Let’s flip a coin, heads and I’ll become the dress, tails and you become the dress.” Jake said. Mary shook on it and flipped the coin.
It fell to the floor landing on tails. Jake took the vial marked with an S and said, “I should change first so we can get the dress on right.” He said drinking it down. The changes were quick to show as the floor started coming closer to Jake. Mary quick stood next to him as he grew shorter than her until his height rested at four foot seven inches.

His skin slowly changed to a pale dark grey, leaving him undead as he felt his organs stop working. His hair turned silver and it flowed down his back and nearly to the ground. His eyes turned red as the pupils became slits. His face reshaped into one fitting of a young girl, as the facial hair receded into his face. His canines grew sharper to fit the vampire as his shoulders shrank down along with his arms. Hair shrunk in as his arms became petite and his hands resembled that of a young ladies’. His small pecs faded away and rose a little bit into small A cup breasts. His waist caved in and his hips, ass, and thighs flared out but not by much. His transformation was almost finished as his penis began to shrink. A womb formed as his testicles were pulled into his body to make ovaries. His penis morphed into a clitoris making Jake fully female and 100% Shaltear Bloodfallen.

Jake looked over her new body as Mary took off all her clothes and sat down on the couch. “I’m gonna change here so I don’t fall on the ground.” She said before drinking her serum. “Treat me nicely and don’t tear me or I’ll-“ was all she got out before her lips sealed shut as a piece of her skin stretched out and covered her lips and was sown on, removing her lips. This happened to her eyes, nose, ears and every other orafice on her body until she looked like a mannequin.

“Mary? Can you still sense anything? Give one finger for sound, two for sight, or three if you can still feel things as well.” Jake said to the mannequin on their couch.

It slowly moved and held up three fingers.
Jake let out a sigh of relief and watched as Mary’s entire body changed color, going from its normal peachy hue to a mix of purples and deep pinks. Her long hair began to tie itself into a large bow, what used to be Mary’s face unraveled and was knitted into a bonnet connected to the ribbon. The bonnet fell to the side and Jake peaked into the hole in Mary’s neck and saw nothing. Two layers of fabric grew out of Mary’s shoulders as her arms became hollow dress sleeves, a zipper opening on her back to let Jake in when he put on the dress.

Mary’s torso began shrinking and pushing fabric down into her hips which began to flare out into the main dress. Her hands unraveled and were used as a large bow that went around the waist. Mary’s final change began as her legs unraveled and the skirt of the dress grew. It kept going until Mary’s legs were gone and the gown resembled a bell. Jake picked it up and stepped into it.

He stepped into the mirror to see that it fit very well except for one part.

“I mean she did fill it in the manga and anime…” Jake said picking up some random padding and filling the chest area of the dress. Together, Mary and Jake set out to have a fun night at the convention.