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My stepsis friend, part 1

Author: @allback1 • Published: 2024-06-05 • Length: 1591 words • ♥ 201 likes • 🌐 View on OpenTGC ↗

I lived with my father, step-mother, and step-sister Mia. They had been together for about 10 years now, and both Mia and I were 20 years old. We had grown up together since we were ten years old, so our relationship was like that of siblings. Sometimes we would play pranks on each other, sometimes we would argue, but most of the time we would just laugh and have fun.

I was deeply engrossed in a game on my PS5 when my step-sister, Mia, burst into my room with her friend Alix. I couldn't help but feel a little disappointed seeing the two of them together. You see, Alix has a reputation for being a bad influence and I worry about her influence on Mia.

I remained focused on my game as I nonchalantly greeted the girls, "What's going on?" Mia inquired, "Hey step-bro, what are you up to?" "It should be pretty obvious," I replied without looking away from my screen. "If you don't need anything, can I just keep gaming in peace?" Mia laughed and teased, "Wow, someone's being rude." “Actually, I could use your help,” Mia declared. “Alix and I need some extra cash, so we’re thinking about starting an OnlyFans account. What do you think?” "OnlyFans? That's for people who are desperate and willing to sell themselves, just a bunch of little whores" I responded, feeling frustrated by her suggestion. I stopped playing my game and put down the controller to look her in the eye. "Remember, once you post something online, it's there forever. Don't do it." “I was not thinking about me, but you” Mia said with a laugh I scoffed and rolled my eyes. "Hilarious, men can't make money on OnlyFans because the audience is mostly male and they're only interested in women. And even if that wasn't true, I would never degrade myself by using that app," I stated firmly. Alix confidently interjected, "That's an easy fix." She extended her finger towards me and a peculiar pink beam of light shot out, hitting me directly in the chest.

I let out a startled exclamation as I felt a sudden pressure in my chest, my voice rising in pitch. My hand instinctively flew to my chest where the light hit me, I could feel fat growing and my body changing. "What's happening to me?" I cried out again, my voice now unnaturally high. Tingling sensations spread across my face and scalp, and I saw my hair lengthening and changing color before my eyes. As my breasts continued to grow, I watched my fingers slim down and become more delicate with manicured nails. The rest of my arms followed suit, losing muscle mass and becoming slender. At the same time, my hips and bump began to grow, causing pressure in that area. Looking down, I saw my feet shrinking and becoming more feminine while my legs became smooth and hairless. The last sensation was my penis hardening before shrinking away entirely. In terror, I reached for it, pleading for it to stop, but all I felt was an empty void. To top it off, my shirt changed into a light pink top, my shorts vanished, and my underwear transformed into a matching panty.

My speech came out in a hesitant and unfamiliar voice. "How... How is this even real?" I managed to say. "It's magic!" Mia exclaimed, bursting into laughter. "Didn't I ever tell you that Alix is a witch? And let me just say, you look stunning. Your body would probably make a fortune on OnlyFans." As the shock of my new form began to dissipate, I spoke with anger and as much menace as a petite body could muster: "You have no right to do this without my consent. Turn me back immediately. I never agreed to this, and I will never participate in an OnlyFans. Do it yourself !" Mia's voice was full of enthusiasm as she spoke, "We will assist you and make it a fun experience. We'll record everything with our smartphones while you explore yourself, and no one will ever know it's you. It's a golden chance for you and we promise to split the profits with you." My response was immediate and emphatic. "Absolutely not!" I exclaimed. "Well, we offered you a chance, but you turned it down. It's your loss, but you'll still be our little whore," Alix stated with a cruel smirk.

As she finished her sentence, a switch flipped in my mind. I suddenly felt confident and desirable, with a killer body begging to be seen. My arousal sparked and I couldn't resist the urge to pleasure myself. Alix and Mia pulled out their phones and began recording me as I sensually and slowly pulled my top, caressed my breasts and my new pussy, revealing them to the world.

Ecstasy coursed through me as I continued to touch myself as I was undressing, my legs spreading apart with each new movement. My newfound curves and softness felt irresistible, and I couldn't help but feel incredibly turned on. Mia and Alix stood by, their eyes filled with excitement at the sight of their "little whore" pleasuring herself. I felt a surge of power as I shamelessly presented myself for their viewing pleasure. The camera continued to capture my every move, and I knew that soon, the world would be captivated by my newfound feminity and the pleasures I had to offer.

As I began to touch myself, Mia suggested, "Wouldn't it be more fun if he had a toy to use?" "Yeah, you're right," agreed Alix. I noticed her pointing her finger, and a beam of light landed on Mia's back.

I watched as my step-sister suddenly shrunk, her arms disappearing into her body and her phone falling to the ground. In just a few seconds, she transformed into a pink vibrator lying helplessly on my bed, unable to comprehend what had just happened to her.

My desire was intense, and when I saw the new toy in front of me, promising immense pleasure, I couldn't resist. I eagerly seized it and sensually kissed it before directing it toward my needing pussy.

As the vibrator touched the lips of my vagina, a wave of pleasure washed over me. I moaned as I pressed it against my newly-formed clitoris, feeling a new kind of pleasure that I had never experienced before. My hips bucked against the vibrating toy as I moved it in and out, relishing in the new intensity of my sensations. Alix's smirk widened as she watched me pleasuring myself with Mia's new form. I kept going, pleasing myself in front of her until I reached my peak. My moans grew even louder as I climaxed.

The intensity of my climax was slowly diminishing, and my thoughts were gradually becoming clearer. I had just pleasured myself on camera with my step-sister as a dildo. It was an incredibly intense experience, and I couldn't deny that I had enjoyed it. But it was far from ordinary...

I couldn't believe it. "What the hell?" I asked, still in shock. "How did you do that?" Alix nonchalantly replied, "I just transformed you into a woman and Mia into a dildo. Is it really that surprising that I can made you horny? Come on now." "Pay close attention," Alix instructed. "The combination of the words 'little' and 'whore' is what triggered your arousal. Whenever you hear these words, you will become a horny little slut that needs to be satisfied. Once you are, you will regain control of your body." Alix's explanation was clear and concise. "But..." I began to protest, but she cut me off: "You'll need to stay in this body for a while longer until we can earn enough money. Everyone, except for the three of us, will believe you've always been Sara." Her words left me speechless. This can’t be real.

"Now, my dear little whore, it's time for round two," she said with a wicked grin. As those cursed words reached my ears, my mind flipped once again and I felt the familiar surge of arousal. I couldn't help but touch myself, caressing and stimulating my most sensitive areas. Alix reversed the transformation, returning Mia to her original human form. As soon as she was back, Mia exclaimed in frustration, "Crap, I dropped my phone!" She quickly picked it up and resumed recording me, unaware of what happened to her. “What about the dildo? Let's transform its video game controller, he doesn’t need it” suggeated Mia

Alix winked at me and did it.

My step-sister, Mia, was being used and tormented by Alix. She was a truly toxic person, and I knew I had to help Mia, but my mind was clouded by desire at the moment and I started to moan in pleasure as I used the new dildo.

End of Part 1. This story will be in 3 or 4 parts.