A Costumed Cutie

“I-Is this a joke?” mumbled Amity, holding the lid of an all-black garment box in both hands as she gazed upon the white and pink bodysuit that was neatly folded inside. It was the eve of Halloween, and while her partners, Lexxi and Erin, had made plans to attend a lavish costume party, she had elected to stay home this October 31st; too socially anxious to dare spending the night in a crowded ballroom. As such, the idea of picking out a costume never even crossed her mind, making it all the more peculiar that such a well-crafted outfit had mysteriously appeared in her room.

Being an avid Gacha gamer, there was no question in Amity’s mind over which character’s outfit the costume was meant to emulate; the pattern on the chest was practically a dead giveaway. Sure enough, as she lifted the romper and its accompanying cape from the box, it was a nigh perfect replica of Paimon’s clothing from Genshin Impact. She scoffed timidly at the childish attire, flipping it back and forth to examine it from every angle. “I told them I didn’t wanna go. Why go through all this trouble?”

While not much of a costume partier, Amity couldn’t deny her affinity for dressing up, especially in cute outfits. Moreover, Paimon was her favorite Genshin character; a fact well-known by both her partners. “Alright fine, you win,” she muttered, carefully draping the bodysuit across her bed before stripping herself down to her underwear. The white, cotton top was very easy to equip, sliding along her torso and tightening against her crotch in a revealing manner; a far cry from her reserved style of dress. Despite her efforts to remain poised, her heart fluttered as she draped the star-covered cape over her shoulders to complete the ensemble.

FLASH!

Without warning, the stars scattered along Amity’s cape began to glow so bright that her entire room became engulfed in blinding light. Her feet lifted off the ground, causing her to float inches off the floor as her clothing began to transform. Specifically, the garments she wore under her costume took on the biggest change, swelling between her thighs and poofing out around her hips until her panties were fully replaced with a bulky cloth diaper. Finishing off her transformation, a pair of white stockings with pink frills wrapped themselves around her feet while Paimon’s trademark black hairpin and sparkly, hovering crown suddenly popped into existence upon her head.

“Huh? What the…a d-diaper?!” shouted Amity, still levitating in midair as she attempted to pry at the magical outfit and foreign padding from her body. To her dismay, not a single piece of her costume would so much as budge. “Why won’t it come off?!” A deep line of crimson coated her cheeks and nose as she tugged at the plush diaper, finding it impossible to ignore the doki-doki feelings that came with being dressed in such a sweet and lewd fashion.

“Hehe! Now, why would she want to take it off when she looks so cute this way?”

“I don’t know, Erin. Maybe she’s just shy.”

Whipping her head toward her bedroom door, the intensity of Amity’s blush instantly doubled as her partners finally made their presence known. “Good thing my Eldritch magic fused that costume to her figure until the end of Halloween. Now, she has no choice but to come with us to the party,” teased Lexxi, rushing over to hug her levitating partner while dressed up as the axe-wielder, Susie, from Deltarune.

“Indeed! We’ll have to thank Jade for helping us make Amity’s costume when we get to the party. Although, you can thank yours truly for the diaper attachment. I know how much we all enjoy them,” quipped Erin, sporting an equally thick diaper beneath her yellow Chocobo suit. A cheeky smile curled across her face as she formed a group hug with Lexxi that squished Amity between their bodies. “Happy Halloween, cutie.”