Sex Change Erotic Stories

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Sex Change Erotic Stories
Male-to-Female Gender Transformations · Mind Control · Magic · Mythology · Anthromorphs · Age Reversal · Eternal Youth · Powers · Romance · Misc TG/TF — Transformation Stories & Sci-Fi/Fantasy Adventures for Adults
Immersive, page-turning, amazing transformation stories & sci-fi/fantasy adventures for adults!
Some stories only include one type of transformation; others mix and match different themes for even more interesting combinations! Click the “Details” tab on any story’s page for more info.
Adult Content Warning:
These stories may include sex, nudity, language, or other adult content , and are intended for mature audiences only . However, at SciFantastica, we want to tell a great story. That’s why we focus on relatable characters within a familiar world. They have emotional stakes, believable motivations, and dynamic relationships — that all culminate into an erotic scene that’s all the more powerful, meaningful, and pleasurable because of it.
Most of our stories are about a man who gets completely transformed, inside and out, into a beautiful new woman. He usually fears and resists the changes at first, but after transforming, she soon discovers she’s actually much happier, freer, and better this way.
A few stories focus on other things, but male-to-female gender transformations are by far our most popular.
But if you’re in the mood for something else, check out all our different transformation themes and categories . We’ve got other fun stuff to enjoy too.
Our stories pull you in and won’t let go. Lose yourself in a fantasy world. Connect with the characters. Feel like you’re actually, personally being transformed with them.
We avoid overly done tropes and clichés, giving you a fresh take on the familiar transformations you love — with relatable characters, believable motivations, and emotionally-engaging plots.
If you have a kink for gender transformations , mind control , fantasy creatures , super heroes , or any of our many other transformation themes — oh yes ! You’re in for a treat. Our stories will turn you on, excite your senses, and make you surrender into your favorite secret pleasures.
There’s always something magical, high-tech, or supernatural, but our stories aren’t “hard” sci-fi/fantasy. They’re fairly based in the real world — except magic exists, fantasy creatures hide among us, and modern technology makes anything possible.
Sex, nudity, romance, or other erotic elements are included in most stories. Even people who feel neutral about gender transformations (it’s just a plot device to them) have become passionate fans. They love the adventure, emotional connection, character relationships, and steamy, sensual sex scenes.
Every ebook sold on this site includes a PDF , EPUB , and MOBI (Kindle) version — all in one purchase! So no matter where you are, what device you use, or how you want to read our stories, you’re always good to go!
Browse through our entire collection and see what jumps out at you.
Everybody has their own personal tastes, kinks, fetishes, fantasies, interests, and desires. What one person loves, another might not.
At SciFantastica, I feel you should only pay for the stories you personally enjoy.
So if you buy a story and it wasn’t right for you — just let me know within 7 days of purchase and I’ll gladly give you a refund.
Gender Transformations
Get turned into the opposite sex.
Mythological Creatures
Become a nymph, fairy, mermaid, or other fantasy creature.
Anthromorphs
Would you enjoy having fur, cute ears, and a tail?
Supernatural Entities
Transform into an angel or demon — or possibly even a goddess.
Soul Changes
Swap bodies, convert between good/evil, and more.
Hypnosis & Mind Control
Surrender. Let go. You can’t resist. Obedience is pleasure.
Super Powers
What would you do if you had a special ability?
Age Manipulation
Become young again. Maybe you’ll live forever.
Other Transformations
You could be transformed into literally anything.

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24 pages November 24, 2013 LaughBeforeYouCry 
You have heard the story where the girl dresses up and becomes a boy, right? Well have you ever heard the story where the BOY dresses up like a girl?
Kameryn is a boy who is in desperate need to get in to an academy and in desperate times calls for desperate measures. Kameryn dresses up like a girl ...
1 page 6 weeks ago The One in the Back 
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(Name) Reginhart is an orphan without relatives who hate his life because of his parents' debt. Died in an accident and when he woke up he realized that he had turned into a high school girl who was in a coma. The bad news is that the girl has the same name and is in a coma for attempting suicid...
6 pages April 13, 2020 doppler 
Being a trainer just a daily norm in Kanto. Being a trainer was traditional and widely encouraged. But sometimes there always that one who really didn't stick to the norm. If their family didn't do what was normal, why should they?
But a certain stray cat may change this kid's mindset, ...
5 pages November 5, 2014 jacky is still a mess 
*ON HOLD BECAUSE WRITERS BLOCK*
Jesse Carr wishes he could do more for his sister's wedding. By a magical circumstance with a fortune cookie, Jesse wakes up a woman the same day that the maid of honor cancels. Only his sister Emma knows who "she" really is and Emma makes Jesse the new ma...
2 pages August 20, 2013 Shadowfeather 
A magician turns a non-believing woman into a man. She tries to keep it a secret from her fiancé as she attempts to find him.
6 pages September 15, 2017 Additional Material 
Naruto's cousin. Short, serious, studious. Uzumaki red hair drags her out of the crowd against her will. More than anything she wants to disappear. What she wears and how she stands in attempts to balance out the weight of uniqueness only makes her look sloppy. But she starts to notice. Which ma...
2 pages January 2, 2017 xXGodessoftheShadowsXx 
Jo Malcolm has a lot on their plate. Just having come out as genderfluid is hard for them. Especially when all but one of their friends left them. Now they are getting bullied by their old best friend?!
34 pages September 12, 2014 SilverStrings 
Reader Insert.
One thousand years ago the father of the Kirkland bloodline was given a prophecy that entailed him to leave the magic-filled world of Delia and start a new life on the ordinary planet Earth. In present day, his heir is about to fulfill the prophecy—whether he wants to or not.
Back in...
Mikaze Ai, a robot, is singer in a band named Quartet Night, and works for SHINING company. Mikaze is ordered to find a secert behind the other boy group, STARISH. What is their secert? How will Mikaze handle this task? Read to find out.

My
mother divorced my father because he beat her. He was rich,
though,
and got custody of me. My mother refused to turn me over,
contending
he beat me too. This simply wasn't true, but I guess Mom
didn't want
to give the bastard any satisfaction and I felt too sorry for
her to
tell anyone the truth.

My
mother hid me at one of her childhood friend's houses in
Texas. The
judge put Mom in jail until she revealed my whereabouts while
my father
hired a Private Investigator to find me.

I
called the woman I stayed with "Aunt" Helen
although she wasn't
really a relation. She, too, was divorced with a daughter
named Tracy.
Aunt Helen now hated all men and lectured me incessantly on
how I had
to be faithful to my mother and not contact my father under
any
circumstances.

On
fateful night as we watched TV my whereabouts, which had
enjoyed
some brief national attention, became news again. The
announcer read a
report that my father had contracted even more PIs and would
begin
contacting all of my mother's known acquaintances.

My
Aunt watched the conclusion of the piece and turned to me.
"John,"
she said quietly, "I knew the time would come when they
would search
for you here. I have a plan, but I need your complete
cooperation.
Will you help your mother and me?"

This
was quite a lot of pressure to put on a thirteen year old. My

mind in a frenzy, I simply nodded.

"Thank
you, John. As you know, some bad people will stop here soon
looking for a young boy, but they won't find one. Do you know
why?"

"They
won't find a young boy because you will be turned into a
young
girl! Tracy and I will transform you into such a convincing
vision of
femininity that no one will ever guess you were once a boy.
Right
Tracy?"

"Oh,
Mom, what a great idea! John will make a foxy girl. He can
probably wear most of my things and his face is almost too
pretty for a
boy already. Let's start right now. What do you suggest, Mom,
skirt
or slacks?"

"Since
we want to prevent him from being identified as a boy, we'll
need to go overboard on making sure everything about him just
screams
'female'. That means no pants at any time and lots of girlish
touches
even in his most casual moments. We have to go overboard on
lace,
lingerie, heels, makeup, the works."

I
forget most of the details of that evening except that I went
to bed
wearing one of Tracy's nighties. My hair had been subjected
to
dizzying number of processes and then wound up in enormous
rollers
covered by a giant pink cap.

My
hands had been coated with skin softener and placed in white
cotton
gloves for the night. My face had been slathered in cold
cream.

Considering
the strange sensations I was experiencing, it was amazing
how quickly I fell asleep. I was awakened at six the next
morning by
Tracy. "Get up, sleepyhead. We've got a lot to do today.
Go and wash
your hands and face while I get your outfit ready."

I
obeyed. Returning, I saw that Tracy had made my bed and laid
out a
bewildering array of lacy apparel, a yellow dress and a pair
of girls
pumps.

She
handed me a pair of pale blue panties and let me modestly
slip them
on under my nightie before I took the nightie off. Next came
a
matching bra and dark brown pantyhose. She padded out my bra
with
cotton balls and taught me how to put on a blue slip by
sliding it over
my head.

At
this point she wrapped a plastic cape around my neck, sat me
down
and brushed out my hair. "Oh, it's darling! No one will
ever suspect
you're a boy."

I sat
still while she applied makeup. The smells were strange as
was
the feeling of my hair tickling my neck. Finally she removed
my cape
and let me get up. She held out my dress and let me step into
it from
the top "so you won't mess up your hair". I later
learned that the
style was a shirtwaist, yellow, with a hem hitting me a few
inches
above the knee.

Tracy
asked me to button the top. It was difficult because it
buttoned
backwards, but I finally got it right.

She
helped me slip into the brown leather sling back pumps. They
had
medium heels and it took me awhile to walk in them but Tracy
was
patient. "Real girls take a long time to learn how to
manage their
heels, too. You're doing fine."

After
she was satisfied, she had me wrestle with jewelry clasps
until I
was sporting a gold choker necklace, a charm bracelet, an
ankle
bracelet and four rings. Finally she sprayed me with perfume
and led
me downstairs to breakfast.

It
certainly felt strange masquerading as a girl. I had to watch
my
feet to keep from tripping in the heels and I found myself
attracted to
the nyloned legs and feminine pumps that were mine.

My
aunt made a tremendous fuss when I entered the kitchen,
making me
stand still as she walked around me. It was weird wearing
girls
clothes but I tried to make the best of it and play along.

After
eating, I started to learn how to do 'girl' chores. My aunt
slipped an apron over my head and tied an enormous bow in
back. I was
handed a pair of rubber gloves and told to do the breakfast
dishes. I
had a easy enough time of it but I kept having to peer over
my breasts.
A strange feeling came over me as I realized that boys would
be
attracted to me in my disguise!

I
tried to get used to my new identity, but I couldn't ignore
how the
hosiery hugged my legs, how the heels changed my
posture-forcing my
breasts and fanny out invitingly.

Eventually
I finished up the dishes, cleaned up the kitchen and joined
my aunt and Tracy in the living room.

"John,"
my aunt began, "Tracy and I were just saying that we
need to
call you something feminine. What's your favorite girl's
name?" I
stammered that I had never thought about it. "Well,
then, how about
'Heather'? I just love that name, don't you Tracy?"
"Wow, Mom, that's
great! OK with you Heather?" Consistent with most of my
other action
in the last two days, I simply nodded dumbly.

"Well,
Heather, we're about ready for your public debut. My friend
Debbie runs a beauty parlor and she's agreed to give you the
works.
Tracy, get Heather set up with a purse."

Before
I knew it, I had a purse stuck in my hand and was propelled
out
the front door. What a clatter I made in my heels! The sight
of
sunlight bouncing off my yellow dress filled me with fear of
discovery.
I made my way as fast as possible to the car and jumped in
the back
seat.

The
drive into town was uneventful. After my aunt pulled up in
front
of the beauty parlor, I opened the door and slid out as I
always have.
The difference was that in a dress, I succeeded in having it
ride up to
my waist. Two boys whistled appreciably at the leg show I had

provided. Tracy giggled as I turned several shades of red.

We
entered the beauty parlor and Debbie introduced herself.
"Oh,
Helen, he's adorable. We'll have him all dolled up in no
time. Strip
down to your bra and panties and put on a robe, honey."
I went behind a
curtain and, struggled out of all the clothing, put on the
short pink
terricloth robe and rejoined Debbie.

As
soon as I sat in the chair Debbie and two other beauticians
practically attacked me! One girl waxed my legs and gave me a

pedicure. The second installed ceramic nails and pierced my
ears.
Debbie, meanwhile, cut my hair, gave me a perm and plucked my
eyebrows.

Although
most of the procedures were uncomfortable, I still got the
impression that I was pampered. While I sat under the hair
dryer,
Tracy handed me fashion magazines to read. I couldn't hear
over the
roar of the dryer, but Tracy would point to an outfit and
then point at
me, indicating that I would look good in it.

My
hair was styled and I was sent to get dressed again. My nails
made
everything more difficult, but I managed to put it all back
on. The
pantyhose and slip felt different against my hairless legs. I
returned
to the chair and waited while Debbie restored my makeup.

The
trip home was uneventful except for my sore earlobes. Once
there,
my feminine training shifted into high gear!

Tracy
had me put on a pair of spike heels at least 4" tall and
balanced
a book on my head to teach me how to walk convincingly. While
I minced
back and forth, she read me teenage romance novels and
quizzed me on
the girls' actions.

"What
would you have done if you were Sarah? Would you wear a long
prom gown or a sexy short one? How would you have dressed for
that big
date with Bob? Do you think it's embarrassing wearing those
little
cheerleading skirts? What do you think that wedding gown felt
like?"

Before
long I was concentrating on the questions, only occasionally
thinking about managing my heels.

Aunt
Helen came in after about an hour and gave me few pointers.
"Put
one foot directly in front of the other- it will give you a
wiggle.
And keep your legs together as you walk. You should feel you
nylons
rub against on another with every step."

After
another hour, me feet ached! Tracy let me change into a pair
of
flats and had me practice sitting in a chair, crossing my
legs and then
getting up. The goal was twofold- to keep my skirts
unwrinkled and to
avoid displaying more of my feminine underpinnings than I
wanted to.

It
turned out that I tended to be too modest! "A girl is
used to
putting her legs on display every day. We don't think twice
about
flashing a little thigh and the boys love it. As long as your
panties
don't show, it's probably OK."

At
last the exercise was over and I was given another teenage
romance
novel to study until bedtime. I had to write down each outfit

mentioned and guess about what underthings would be
appropriate.

Finally,
under Tracy's direction, I put my hair up in rollers, creamed

off my makeup, took my 'vitamins' and applied the lotions. I
slipped
into a pink baby doll set and quickly fell asleep, dreaming
of lace and
lingerie.

The
next morning I showered with a cap on and dusted myself with
scented powder. Tracy knocked on the bathroom door and told
me that we
were going to the mall and I was pick out my own outfit.

With
my hair up in curlers, wearing a pink terrycloth robe and
selecting dress from my closet, it struck me that anyone
seeing this
would have a hard time believing I was a boy.

I
finally settled on a simple black sheath with little cap
sleeves. I
laid it on the bed and picked out a pair of black leather
pumps with
little roses on the toes.

Concentrating,
I slipped on a pair of nylon panties and a new pair of
off-black support pantyhose. I had to slide my male equipment
down
between my legs to give me a credible girlish front.

I
donned a padded black bra as Tracy had showed me by hooking
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