The Transformation Device

The Magic Collar

The late afternoon sun slanted through the trees in the park, painting long shadows across the path. Fran kicked at a loose pebble, her usual restless energy humming around her even during a lazy walk. She’s always been like that – petite frame holding a surprising amount of kinetic buzz. Five-foot-three of lean lines, short brown hair framing a face that was more cute than conventionally beautiful, barely any curves to speak of beneath her usual band t-shirt and worn jeans. Me? I’m the...

The Swapping Device - Ch. 09

Okay this is a LONG one. I really wanted to flesh out the world and lore a lot more with this one, but I included a very sexy scene at the end.

I hope you like it!

Breast Size Watch - Ch. 04

Continuing a fan favorite here! Annie is really getting comfortable with that watch, but what happens when Brad wants a go...

Enjoy!

Changing Bracelet - Ch. 03

Here is another chapter to this side story, a whole 22 pages this time!. I'm really enjoying exploring other artifacts. Bit of a different take, but I plan on having this story eventually come into the main series.

Enjoy!

The Swapping Device - Ch. 08

Chapter 8 is here, and the narrative is really starting to pick up! I'm having a lot of fun writing these, and I'm already working on a juicy chapter 9.

Also, I was working to create some covers for each series, and I'm happy to share what we came up with! I hope you like it.

The Swapping Device - Ch. 07

I really liked the direction the story was going in, so here it is uploaded as a PDF.

As a thank you for your patience. I've included the bonus for Chapter 7 for Full Access members, not just Bonus members. Enjoy!

And remember there is still a bonus chapter to chapter 5 available in the Full Access + Bonus tier.

Chapter 7 removed due to community guidelines

Hey everyone

Chapter 7 was removed due to it not meeting Patreon's community guidelines for various reasons. As such, I'll need to rework the chapter a fair bit.

To make up for it, I'll post a bonus chapter for Full Access members once the chapter has been reworked. Thanks for your support!

The Breast Size Watch - Ch. 03

The following story takes place in "The Swapping Device" universe and follows another group of characters who have found a different artifact.

A few weeks have slipped by in a blur, and I’m still trying to catch my breath from how fast everything’s moving. It started as a lark, a silly little experiment between Mandy and me. That first video got us hooked, and before we knew it, we were uploading daily. Three weeks later, we had an OnlyFans account with 250...

What artifacts would you like to see in future side stories?

I intend on having these side stories eventually make their way into the main Swapping Device series, so let me know your ideas and what interests you! It could be anything, glasses that let you shapeshift, a pendant that makes everyone around you instantly attracted to you... anything!

Comment below :)

Due to popular demand, "Breast Size Watch" has now been added into the rotation of chapters for Full Access members.

Bonus stories like The Changing Bracelet and other bonus chapters like the Chapter 5 Swapping Device Bonus Chapter will still be only available for Full Access + Bonus members.

I've updated the membership tier descriptions, so head over there if you want a detailed look at each tier after this update.

Let me know below which story you're most interested in! This will help guide where I put my time in the future. Got a suggestion for a story with a new artifact? Full Access + Bonus...

The Breast Size Watch - Ch. 02

The following story takes place in "The Swapping Device" universe and follows another group of characters who have found a different artifact.

Update: I edited the story a little due to some feedback from Chapter 1.

My eyes flutter open, and the soft, muted light of Brad’s dorm room slipped through the slats of the blinds, painting faint stripes across the tangled mess of sheets around me. I blinked a few times, my head still swimming in t...

The Breast Size Watch - Ch. 01

The following story takes place in "The Swapping Device" universe and follows another group of characters who have found a different artifact.

I slumped in the back row of the lecture hall, my notebook open but untouched, my pen dangling loosely between my fingers. Professor Daniels was rattling on about supply and demand curves, his voice a monotonous drone that seemed to lull half the class into a stupor. I glanced around, taking in the sea of students: some...

Changing Bracelet: Girl for a Week - Ch. 02

The following story takes place in "The Swapping Device" universe and follows another group of characters who have found a different artifact.

This and all future chapters in this series are a Patreon exclusive.

Chapter 2

The apartment’s alive with the constant buzz of the air conditioner, fighting a losing battle against the brutal LA heatwave that’s turned everything into a sweat-soaked mess. I’m sprawled across the couch, l...

Changing Bracelet: Girl for a Week - Ch. 01

The following story takes place in "The Swapping Device" universe and follows another group of characters who have found a different artifact.

The café door jingles as I shove it open with more force than necessary, the cool rush of air conditioning hitting me like a lifeline. Outside, the LA sun is relentless, a furnace that’s been roasting me alive for the entire walk here. My skin’s sticky with sweat, and I tug at the hem of my camisole, trying to peel ...

What do you want to see more of in future chapters.

Vote in the poll below for what kind of swaps you'd like to see, or comment anything that isnt mentioned.

Also, feel free to comment with suggestions for how "the club" can play into the story more with alternate artifacts.

The Swapping Device - Ch. 06

The morning sun spills through my window, painting golden streaks across my tangled sheets as I blink awake. My body feels strange, heavy in all the right places. I stretch, arms reaching high, and my breasts lift with the motion, full and firm, pulling at my chest in a way that’s still a shock. The cool air brushes my bare skin, and I glance down, catching the curve of my hips, the smooth dip of my waist, the way my thighs press together under the covers. It’s unreal, this body, borrowed...

Where did you first hear about this series?

James' Gender Swap - Ch. 04

James' Gender Swap from chapter 4.

Emma's Chest - Ch. 03

This is Emma when James swaps Cindy's chest with Emma's.

Story direction for Chapter 6?

What direction should the next chapter go in?

Comment if you have any requests for specific swaps too!

Chapter 5 BONUS

The following takes place after chapter 5 and before chapter 6, and follows the perspective of Sam and James as they explore their new bodies in the privacy of their own homes alone.

Sam

I’m sprawled across my bed, the mattress groaning under my new, curvier weight. These massive F-cup tits jiggle every time I shift, and I can’t stop staring at them. It’s been a wild day—yoga class, locker room glances, the whole damn body-swap mess—and I’m still wired...

The Swapping Device - Ch. 05

The sauna’s heat lingers on my skin like a lover’s breath as Sam and I step out, the air thick and heavy, my body still thrumming from the steam. I’m adjusting the hem of my crop top, feeling the way my breasts shift with every move, when Sam—stocky and vibrating with that manic glee of his—grabs my arm and yanks me down the hall. His girl-voice, high and giddy, cuts through the post-sauna haze. “Look at this, dude. Yoga class. Women only.”

I follow his gaze through the gl...

The Swapping Device - Ch. 04

I blink awake, the morning light sneaking through my blinds like it’s trying not to wake me. My phone buzzes on the nightstand, insistent. I groan, reaching for it, and squint at the screen. A text from Sam: “Yo, you free today? Let’s hang.” A grin tugs at my lips. Sam’s my best friend, the guy who’d jump off a cliff with me just to see what’s at the bottom. I type back, “Sure, come over whenever,” and toss the phone aside.

Swinging my legs ...

The Swapping Device - Ch. 03

The Mercedes hums beneath me as I pull into Emma’s driveway, the engine’s purr fading to a soft whisper when I cut it off. I step out, slinging my mall haul over my shoulder, and the evening air brushes cool against my skin. Emma’s house is a modest two-story, all clean lines and beige siding, the kind of place that screams suburban normalcy. I head up the walk, my sneakers scuffing the concrete, and ring the bell. The door swings open almost instantly, and there’s Emma’s mom, Linda...

The Swapping Device - Ch. 02

I wake up to a strange weight pressing down on my chest, like someone’s tossed a warm, heavy blanket over me while I slept. My eyes snap open, and I glance down. Oh, right. Tits. Big, perky C-cups, still straining against my t-shirt, the fabric stretched tight over their curves. For a split second, panic jolts through me. Did I really fall asleep without swapping back? My heart thuds, but then the memories crash in like a wave: the device, the swaps, Cindy’s chest now mine. A slo...

Welcome!

Hey, everyone! Welcome to The Swapping Device Patreon!

I’m so excited to have you here for The Swapping Device—an ongoing erotic transformation series.

First things first, thank you for joining! Your support is everything to me. I only work part-time so I can carve out space to write, and the funds from this Patreon help me keep that balance while still paying rent. Every bit you pitch in keeps this story alive and lets me focus on craft...

The Swapping Device - Ch. 01

I kick a pebble down the sidewalk, watching it skitter into the gutter. Another aimless afternoon in suburban LA, the sun beating down on my neck, making me wish I'd worn a hat. The mall was a bust today--nothing caught my eye, and the crowds were too thick for my liking. Living with my parents at 25 isn't exactly glamorous, but it's rent-free, and my job at the tech startup barely covers my student loans. Still, the boredom gnaws at me, a constant itch I can't scratch. Days blend into each o...