[MtF4ApFtFuta] Changing Perspectives, Shifting Needs (Transformation, Incest, Long Term)

I wake up on a Saturday morning after the end of my first semester of college, having returned home to watch my younger sister while my parents were on vacation, ready for a day of lazing about and relaxation. Maybe heading to the bar for a few drinks, see if I can find a lady for some “Happy Hour” fun. Even if I don’t land one, it’s always fun to see the girls out in their bar outfits.

With a yawn I stretch in bed, eyes still closed. As I move, though, I can already tell that something is wrong. My whole body is low key sore, as though I had gone through a growth spurt even though I’m long past puberty, and everything about my proportions feels… off. Blinking my eyes open I look down and my eyes almost immediately widen in shock.

Rather than the body of an athletic and quite attractive if I say so myself man my eyes fall onto the lithe body of a teenage girl. “W-what in the hell?” I squeak out, even my voice having pitched up significantly into a cute, feminine register. My mind is a whirl and staticky with panic, but after a moment my thoughts settle on my sister. She’s always been an absolute mad genius when it comes to… well, just about everything, and she had made me a special “health drink” last night.

”SIS! WHERE ARE YOU!?” I cry out, scrambling out of the bed to go find her, only to notice her leaning against the door frame of my room with a smirk on her face. “What in the hell did you do!?” I demand.

”Pffft, you’re always such a pig,” she said calmly. “I just figured I’d give you a bit of a chance to learn what women go through. Maybe then you’d stop being such a chauvinistic asshole going from one night stand to one night stand.” Her smirk twists into a vicious little grin as she says, “Don’t worry, I’m already developing an antidote. You’ll just have to earn it.”

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A week later, a week full of fumbling, confusion, and new sensations and sensitivity, and I wake up to a feminine shriek that DIDN’T come for me for once. Scrambling out of bed I get ready to seek out my sister out of concern for her safety, even if a big part of that concern is wanting to make sure she can still change me back before our parents return in a few months. “Sis, are you okay!?” I cry out as I swing my legs over the edge of the bed, ready to push myself to my feet.

An instant later I’m interrupted in my movements as my sister bursts into my room with a panicked expression on her face. “Bro, you have to help me!” she screams. “I was working on the antidote and I must have accidentally taken a drink from one of my prototypes instead of my water bottle and, and, and it just won’t go down!”

I blink blearily, shaking my head as I try to make sense of what she just said, when my gaze manages to drift down to her lower body and I freeze in place. There between her legs is a comparatively huge erection tenting her shorts so impressively that her waistband has been pushed a good distance away from her belly. “W-what?” I manage to get out despite my confusion.

”It’s so hard and hot and it feels WEIRD!” she whines, keeping her hands firmly up by her shoulders despite the fact that every time her focus drifts they start reaching down towards her futa cock. “A-and it just won’t go down! And I don’t have an antidote for this! And I c-can’t even think with how this thing is making me feel!”

I gulp heavily, my eyes fixed on the tent between her legs, trying not to acknowledge that looking at it has the space between MY legs feeling like a furnace. Just… focus on the problem, right? She needs to make an antidote for BOTH of us now, and she needs to be able to think to do it, and for that to happen she’s going to need some relief first, right? And she doesn’t have any experience, so…

”W-well,” I say, clearing my throat, “Since you don’t have any experience with boys I g-guess it’s up to me as your big brother to… help you out.” My thoughts feel fuzzy, and it’s a struggle to ignore the way that my panties are soaked through and my mouth is watering. “T-this had better earn me a lot of points t-towards getting that antidote!”

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Hello everyone! I’m looking for something a little… weird. A story about a college age man turned into a teenage girl by his mad scientist sister, said mad scientist sister accidentally turning herself into a futanari, and the way that the shenanigans they fall into makes them question their identities and whether they even want an antidote. Their increased sensitivity due to their unfamiliarity with their changed bodies makes every encounter mind warping, and it’s a struggle not to just fall into blissful sexual addiction with each other. Do they manage to resist, or do their lives become an incestuous free use fuck-fest regardless of the consequences? …Probably the latter, if we’re all honest.

Anyway, if this sounds fun to you then please feel free to send me a chat. Include the password changes so I know you read this, please, and I’d love to jump into things with you. No worries about RL gender, it’s all twisted up in this story anyway!

Kinks: Lots of detail, increased/altered sensitivity, unwanted/uncontrollable arousal, aphrodisiacs, transformation, mindbreak, free use, BDSM, pet play, public sex, hidden sex, fingering, sex toys, hold the moan, wardrobe control, vaginal sex, breeding/pregnancy risk/impregnation/pregnancy, and plenty more.

Limits: Scat, urine, snuff, vomit, and spit are the ones that come to mind immediately, but there may be others that come up when we discuss.