I groaned as my stepsister popped her head up from the sofa.

"Toddling off to your room are you, no friends to go out with tonight you little dweeb?"

I flashed her the finger but didn't say anything else otherwise. I couldn't believe the pair of us were going to be stuck together for 3 months. With dad having run off with a woman closer to my age than his, it was just myself, my stepsister Abbie and my stepmother Helen in the house. And boy did those two hate me, the living breathing reminder of the one who had slighted the pair of them. At least Helen was away on business for the summer, but that still left me lumbered with Abbie. The money left behind by dad meant that we weren't short of money at all, but it was all in Helen's hands, and whilst she was away that meant it was in Abbie's hands. I had a year until I could access my trust fund, and until then I was stuck here with the pair of them.

We were only 2 weeks in and already Abbie was driving me crazy, all over the standard stuff as well. She was a master at picking out my insecurities, and she'd focused right on the main one. Despite the beard and body hair I desperately grew to try and compensate, I wasn't exactly the manliness of guys. Here at age 24 I stood at only 5"7 and was relatively delicate, my dark brown hair collar length. In fact despite being 2 years younger than me, Abbey wasn't much slighter in frame. She constantly teased me calling me 'Dear' or 'Rachel'' saying I was wasted as a man, and that I should have been her sister, the sort of stuff that got right under my skin. I'd shown her on day one of us being alone however, a bucket of ice I'm her bed after a particular name calling session got to me. She's been quiet since then.

Stepping into my rook I frowned as I looked at the bed. There on top of it lay one of Abbie's dresses.

"What on earth are you doing here…" I muttered. I picked it up and absentmindedly held it against me, Abbie must have left it here when putting the washing away. Suddenly a bright flash filled the room. I turned, dropping the dress in shock to see Abbie standing there with her phone, a devious smile on her face.

"Oh very good choice Rachel, luckily for you I'm more of a sharing sister, I bet you'd look darling in a pair of black heels,"

With a yell I ran after her, but she was ready for me and was already in her own bedroom, the door locked. I hammered twice on the door and yelled for her to come out. There was no response. But then my phone began to vibrate. It was several messages from Abbie. Opening it the first was a photo attachment was of me holding the dress against myself, seemingly staring at my reflection in the mirror. 2 more images followed…

" What the fuck!?!?"

I was asleep in each one. But worse than that I was in full make up and in a different set of women's clothes each time. First a silky blue nightie that I instantly recognised as one of Helen's, and the second I was on a lounger by the pool outback, Abbie's bikini on and a set of sunglasses covering my eyes. I had no recollection of the photos being taken let alone wearing these outfits. Had she drugged me or…

Before I could think further another message came through.

"Wouldn't it be a shame if this little photoshoot got linked to mum, your dad and all your friends. I've got copies hidden so don't even try anything. Maybe it's time for my lovely step sis to come out and play for the summer…"

Thank you for reading my prompt, I hope its given enough of an idea of the basic story. As you can probably tell I will be playing the role of Thomas, the 24 year old, and yourself as Abbie his 22 year old step sister.

What I envisage is a blackmail led summer for forced feminization, being led further and further into womanhood. I very much live for the Transformation and blackmail element of this,as opposed to it just descending into sex (though obviously I can envisage sexual humiliation as well). This is all about Abbie putting Thomas on a path to womanhood that will not be able to leave, no matter how much he tries to struggle against it. Going shopping for his own new wardrobe, being made to go to the salon to have his hair styled, his ears pierced and eyebrows and body hair waxed. Abbie may even have plans for more permanent medical changes to cement Tom's new place in life.

Kinks: Forced Feminization, Blackmail, Hormones, Surgical Change, Milking, Forced Bi, non-con/dub-con, emasculation, humiliation, in depth transformations (hair, makeup, clothing), Sissy, Incest

Limits: Bimbofication, Blood, Scat, excessive pain.

Obviously this is quite a long prompt and I wouldn't expect posts to match this length. However I would be after a couple of paragraphs a post and would like to be with a literate and detailed roleplayer. If you are interested or have any questions please drop me a message or connect via chat.

All characters are aged 18