Cover of The Gender Bender Ball

The Gender Bender Ball

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An erotic story where, set at a costume party, attended by the narrator Evan, his girlfriend Gracie, and several of their friends. The costumes will start off innocent enough, but at some point during the party, costumes will start to magically shift, transforming into sexy feminine versions. These costumes will then transform their wearers into well hung futanari -women with big cocks above their pussies- to the surprise of the guests.

Chapter 1: The Manor of Portents

The tires crunched on the gravel drive, a sound that seemed too loud and modern for the place looming ahead of us. The mansion was a monster of dark stone and jagged peaks, silhouetted against a bruised twilight sky. Every window was a dull orange eye, flickering with candlelight from within.

“Whoa,” I breathed, leaning forward over the steering wheel. “Gracie, are you sure this is the right address?”

My girlfriend just giggled, her nun’s habit scratching against the passenger seat. “Of course it is. Brandon said his family’s place was ‘old.’ He undersold it a little.”

A little. The place looked like it had been imported brick-by-brick from some forgotten European moor. We got out, the cool night air raising goosebumps on my arms. I adjusted my butler’s bowtie, feeling suddenly ridiculous in my cheap costume. My jacket was a little tight across the shoulders.

Gracie looped her arm through mine, her face alight with excitement. “Come on, Evan. It’ll be fun. A costume party in a real-life castle!”

“Manor,” I corrected softly, but she was already pulling me toward the massive oak door, which was swung open to reveal a swirling chaos within.

The grand foyer was a cave of sound and shadow. The ceiling vanished into darkness overhead. A colossal crystal chandelier hung like a frozen firework, its candles casting a dancing, unstable light over everything. The air was thick, warm, and smelled of beeswax, old wood, and something else—something spicy and ancient, like incense. Music with a deep, pulsing beat echoed off the stone floors, mingling with the shrieks of laughter and conversation.

People were everywhere, a riot of vampires, zombies, and superheroes packed together. Their costumes were elaborate, far beyond the simple butler and nun getups Gracie and I had thrown together.

“This is insane,” I shouted over the din.

Gracie squeezed my arm, her eyes wide as she took it all in. Then her gaze drifted past the crowd, toward a dark arched hallway leading away from the main frenzy. “Let’s go look.”

“Look at what? The party’s right here.”

“The house, silly! We can’t come to a place like this and not explore.” That blush I loved so much crept into her cheeks, but there was a determined, mischievous glint in her eye. “Come on. I bet the bedrooms are wild.”

She didn’t wait for an answer, tugging me through the edge of the crowd. We slipped down the hallway, the roar of the party fading into a muffled thump behind us. The corridor was quieter, lined with portraits of severe-looking men and women in old-fashioned clothes. Their eyes seemed to track us as we passed.

“Gracie, this feels… private.”

“It’s a party, everyone’s exploring,” she said, her voice a hushed whisper. She tried a doorknob; it was locked. The next one swung open to reveal a library, its shelves crammed with leather-bound books. But it was the third door that caught her interest. She pushed it open and gasped.

The room was straight out of a historical drama. A massive four-poster bed with heavy velvet curtains dominated the space. A fireplace big enough to stand in held a crackling low fire, and a single candelabra on the mantelpiece provided the only light, throwing long, dancing shadows across the tapestries on the walls. On the wall closest to the bed, a huge gilded mirror reflected the room.

“Wow,” I said, stepping inside. The air in here was even heavier with the incense smell.

Gracie closed the door behind us, and the sound of the party became a distant, almost imaginary pulse. She turned to me, her face illuminated by the firelight. The white nun’s wimple framed her face, making her look both innocent and strangely provocative.

“See? Told you it was worth it.” She grinned, stepping closer.

I reached for her, but as my hands settled on her hips, I felt a weird sensation, a sudden warmth that had nothing to do with the fireplace. It was a tingle that spread through my fingers and up my arms. At the same time, the fabric under my palms seemed to shift. The coarse, heavy wool of her habit felt thinner, softer.

“What the…” I started.

Gracie’s eyes went wide, looking at me. “Evan, your… your jacket.”

I looked down. My black butler’s jacket was… changing. The material was lightening in color, fading to a stark white. The cut was reshaping itself, the sleeves tightening, the body of the jacket shortening and flaring out into a ruffled, lacy trim. I felt a bizarre, airy sensation on my legs and glanced down to see the black trousers dissolving into the sheerest black stockings, held up by a frilly garter belt. A short, flouncy black skirt completed the picture. I was wearing a French maid costume.

I stared, my brain refusing to process it. “What is this? Some kind of… party trick?”

I looked back at Gracie. The transformation had hit her too. Her bulky nun’s habit was gone, replaced by a very short, very tight black dress that was cut to mimic a nun’s robe, but it was slit up the sides and plunged deeply at the neckline. Through the slits, I could see that her legs now bore tantalizing sheer black stockings. The white wimple had become a white headband, perched precariously in her blonde hair. The costume was blatantly, outrageously sexy.

She blushed a furious scarlet, her hands fluttering down to touch the new fabric on her thighs. “Oh my god. How did they…?”

But the change wasn’t over.

Her expression had shifted from shocked embarrassment to something else entirely. Her eyes were closed, her head tilted back slightly. A soft, breathy sigh escaped her lips. Her hands weren’t patting her skirt anymore. They were pressed against her lower belly, as if feeling something deep within.

Then, I saw it. The tight black fabric of her new, salacious nun costume was stretching. A bulge was forming, pushing insistently against the material, growing, thickening, defining itself into an unmistakable shape. It strained against the dress, a prominent, demanding curve.

Her eyes fluttered open. They were the same sweet, clear blue they’d always been, but now they were filled with a mixture of wonder and a confusion that mirrored my own. She looked down at herself, at the very obvious, very male appendage that had manifested between her legs.

She touched it tentatively through the fabric, her fingers tracing its outline. A small, bewildered smile touched her lips.

“Evan?” she whispered, her voice trembling, but not with fear. It was with awe.

I just stood there, in my maid’s outfit, stockings and all, staring at my girlfriend—my beautiful, petite, blonde girlfriend—who was now very visibly, undeniably, hung.

I just stood there, in my maid’s outfit, stockings and all, staring at my girlfriend—my beautiful, petite, blonde girlfriend—who was now very visibly, undeniably, hung.

My mind was a blank screen of static. There were no words, no coherent thoughts, just the frantic thumping of my heart and the warm, prickling sensation spreading through my own body. It started in my core, a deep, internal shifting that felt less like pain and more like a release, a bizarre unclenching of my very skeleton. A wave of dizziness washed over me, and the room seemed to tilt. I took an involuntary step back, my balance feeling off.

My perspective was wrong. The top of the four-poster bed seemed suddenly higher. Gracie, who had always been a few inches shorter than me, now seemed to be looking directly into my eyes.

“Evan?” she said again, her voice laced with a concern that cut through her own confusion.

I stumbled toward the large gilded mirror, my legs feeling strange and uncoordinated. The stockings felt tighter around my thighs, the garter belt a foreign anchor. I gripped the carved wooden frame, my knuckles—were they smaller?—straining as I stared into the glass.

The person staring back was not me.

It was my reflection, but it was warped, rewritten. I was shorter, my shoulders narrower and sloping. The white lace of the maid’s bodice was no longer flat. It was strained over a generous, swelling curve. My hands flew to my chest, and I felt them—full, heavy breasts where there had only been muscle and bone before. The weight of them was a shocking, undeniable reality.

I watched, hypnotized, as my waist cinched inward, a sharp, dramatic curve that made the frilly apron of the uniform seem even more frivolous. Below, my hips flared, the black skirt tightening over a rounder, broader backside. The stockings dug into the new softness of my thighs.

But the face. The face was the most profound violation. The strong jaw I’d known my whole life was gone, softened into a delicate, heart-shaped curve. My nose was smaller, my lips fuller and painted a natural, glossy pink I’d never worn. My eyes, still my own shade of hazel, were wider, framed by long, dark lashes. My hair was longer, spilling over my shoulders in soft waves.

I opened my mouth, but no sound came out. I was a stranger. A pretty, curvy woman in a French maid costume, her expression a perfect mirror of my own utter, soul-deep horror.

Gracie appeared in the reflection behind me, her hand reaching out. “Evan?” she whispered, her touch landing on my new, narrower shoulder. Her fingers felt different. Larger. More sure.

I flinched at the contact, spinning around to face her. The motion felt fluid, alien. I had to look up at her now. The sweet, familiar features of my girlfriend were set in a mask of awe as she looked me over, from my new high-heeled pumps to the cascade of hair that wasn't mine.

“Your… your voice,” she breathed. “Say something.”

I tried. I tried to form my name, to summon a deep timbre that was gone. What came out was a higher, softer, undeniably feminine sound, shaky and thin. “Gracie?”

We stood there, in the fire-lit silence of the room, two people who knew each other better than anyone, now complete and terrifying strangers to each other, and to ourselves.

The silence was a physical thing, thick and heavy between us. I could hear the crackle of the fire, the frantic thumping of my own heart. My new voice hung in the air, a fragile, alien sound.

Gracie’s eyes, wide and bewildered, traveled over my new form. Her gaze wasn't fearful. It was… curious. "Your hair," she whispered, her own voice a bit deeper than I remembered. She reached out, her fingers—still delicate, but larger now compared to my smaller form—brushing a strand from my cheek. The touch sent a jolt through me, a confusing mix of familiarity and profound violation.

Then I felt it. A deep, internal shudder, a final, sickening lurch that abandoned my chest and breasts and solidified low in my belly. The bizarre warmth concentrated, pooling with an intense, prickling heat between my legs. It was a pulling, a rearranging that was both utterly alien and terrifyingly specific.

"I… I don't feel right," I gasped, the feminine lilt of my own voice fueling a fresh wave of panic.

My hands, smaller and softer, flew downward. I grabbed handfuls of the black frilly skirt. I yanked it up.

I stared through the sheer white fabric of the panties I now wore. My breath hitched. My balls, a weight I’d known my whole life, were retracting, pulling up and inside me in a smooth, seamless motion that made my stomach lurch. In the space they left, a moist, warm cleft formed, a delicate line of flesh that hadn't been there seconds before.

And as that settled, a different pressure surged forth. My cock, which had felt small and insignificant amidst the other changes, began to swell. It thickened, lengthened, pushing aggressively against the confining white silk. It didn't stop. It grew to a size that was comical, terrifying, straining the delicate fabric to its limit with a throbbing, pornographic weight.

I stared, frozen. A woman’s body, with a man’s monstrous erection. A choked sound, half-sob, half-gasp, escaped my lips.

"Evan?" Gracie’s voice was closer.

I couldn’t look away from the impossible sight beneath my skirt. The sheer absurdity of it, the violation of every physical law I knew, short-circuited my brain.

Her shadow fell over me. I felt her hand, large and warm, on my arm. "Let me… let me see."

I was too stunned to resist. She gently pushed my trembling hands away, her gaze dropping to the blatant outline pressing against my panties. Her sweet face, still framed by the blasphemous nun’s headband, showed no disgust. Only a deep, consuming fascination.

Her fingers hovered over the straining silk. "It’s… it’s huge," she breathed, a faint blush coloring her cheeks.

"It’s… it’s huge," she breathed, a faint blush coloring her cheeks.

Her fingers hovered, then drifted down, tracing the rigid line of my cock through the silk. The touch was electric, a jolt of pure sensation that made my new, softer body jolt. I watched, mesmerized and horrified, as her hand slid lower, past the throbbing length, seeking the familiar weight that should have been there.

Instead of cupping my balls, her fingers pressed into something else entirely.

They met soft, wet folds.

She gasped, her head snapping up to look at my face, her eyes wide with a stunned realization that mirrored the one crashing through me. "Evan…" Her voice was a whisper of pure awe. "You have… both."

The world tilted. Both. The word echoed in the hollowed-out space of my mind. The massive, demanding erection was one thing—a terrifying addition to this new body. But this… this was a fundamental rewriting. It was an absence and a presence all at once, a biological impossibility that made my skin feel too tight and too loose all over.

A shaky, ragged breath I didn’t recognize as my own tore from my throat. I looked down, my gaze following the path her hand had taken. The thin white panties were stretched obscenely over my hard length, but at its base, the fabric was darkened, dampened by a moisture that wasn't mine. Or maybe it was. Now it was.

I felt it then, not just as a visual, but as a deep, internal thrum—a second heartbeat pulsing from that new, wet cleft. A raw, aching emptiness that seemed to pull at the very core of me.

Gracie’s hand didn’t pull away. Her fingers, now trembling slightly, pressed a little deeper into that softness, a tentative exploration. My hips bucked involuntarily, a choked cry escaping my lips. It wasn't a sound of protest. It was a sound of shocking, overwhelming pleasure, so sharp and foreign it felt like pain.

Her blue eyes, still so innocent, so Gracie, searched mine. The blush on her cheeks deepened, spreading down her neck. "Does it… feel…?"

I couldn't form words. I could only nod, a frantic, jerky motion. My hands, small and weak, clutched at the frilly apron of my maid's uniform, the fabric rough against my suddenly hypersensitive skin. The firelight glinted off the gilded mirror, and I caught a glimpse of us—a slutty nun, her hand buried between the legs of a trembling French maid, both of us staring at each other like the only two survivors of a shipwreck.

Her other hand came up to my cheek, her thumb stroking my skin. "It's okay," she whispered, though her voice shook. "We're both… different."

Her touch was an anchor in the roaring chaos. My gaze dropped from her eyes to the prominent bulge straining against her own tight black dress. A strange, dizzying curiosity cut through the panic. What did it feel like for her? Was the same wild, confusing energy coursing through her?

My own hand, moving with a will I didn't understand, lifted. I reached out, my fingertips brushing against the hard outline of her through the soft fabric. She shuddered, a sharp intake of breath hissing between her teeth. Her eyes fluttered closed for a second.

When they opened, the look in them was entirely new. It was a dark, hungry wonder. "Evan," she said again, but this time it was a question, an invitation.

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