As you walk outside, you hear the Nurse moan out her name to you, clearly while masturbating. "By the way, I'm Jessica." You give her your name in return, and she smiles, while furiously fingering herself. You can't help but watch from the doorway as the beautiful woman pleasures herself right in front of you.
You even are about to ask her if she needs any help when suddenly her motions change, as a bulge starts pressing up against her tight pencil skirt. She miraculously has just grown a penis! And from the looks of it, it is quite large too, maybe about the same size as your own.
Then Jessica does something unthinkable. She rips off her skirt, freeing her cock from the tight confounds that was once her clothing. However, this is where thungs become weird. You cannot help but notice a strikingly familiar appearance of her new cock. And the more you look at it, the more you become convinced that she now has an exact replica of your own cock!
It is as crazy as it sounds, so just to be sure, you take out your own to compare. At least you wanted too. But somehow, your crotch is currently, concerningly, void of your dick. And in its place, is a quite wet pussy. You are so shocked by this that you are speechless. This is when Jessica fills you in.
"You see, whenever someone on this island takes the sexual fluids of another into their body, they swap genitals with them. Now you have my pussy, while I now have your dick and balls. And do keep in mind that the longer you stay with a pussy, the more feminine you will become. It is a weird but kinky phenomenon on this island."
"What?!" You exclaim. "So you mean, I am going to become a woman now? Doesn't that mean you will turn into a man too?"
"You're about half, mmmm, maybe 70% right. You will become a woman, in fully body, but it isn't as easy in reverse. I will become more manly, but I won't just become a full blown guy. I will become more like an Amazonian than anything really. Sure my tits may shrink a bit as more of my muscles grow, and I may even get a bit more body hair here and there, but it isn't like I will suddenly become a manly man. Part of it is due to personal grooming, but also it is just a quirk of the island. See, the island swaps sex organs, but for some reason, while a man's testicles are swappwd, a woman's ovaries are instead cloned or updated if their person is swapping with another woman. Its kind of odd when you think about it, right? Like why swap out testicles, but clone/update ovaries?"
"S-so now, what your saying is... is that I have a copy of your ovaries inside of me? And that this is your pussy. And from now on, I will always have a pair of ovaries inside of me, unless I get them removed, because having sex either will not effect them, or will just replace them with the woman's ovaries with whom I just had sex with?"
"Perfect! It's exactly how you said it. Anyways I am going to get back to this, and I don't want to trade it back right now, sooo..." Jessica then nods towards the door behind you, implying that she wants you to leave.
You do not really know why, perhapse maybe due to the shock of everything that you just were told about impeding your judgment ability, but you just turn and leave the building like she asks, without even fighting to get your dick back from her.
The island is anything but deserted. There are several huts made of wood, mud, grasses, and stone. Only the hospital building appears to be more "modern" looking, seeing as how it is the only one made with real building materials like steel and concrete, with a fully poured foundation, reinforced glass windows, and everything. The rest of the structures are buikt with and from primitive technologies. Basically what you would expect to find on an island in the middle of nowhere where a bunch of castaways have built shelters on. Their most advanced technology outside of the medical building being just a large water wheel.
As for the people, well, the women, there are quite a few of them. About half of them are noticably taller, more muscular than their weak and delicate looking counterparts. However those smaller woman are some of the most beautiful women you have ever seen. There isn't a single one of them who you would rate less than a 8/10, with most being 9/10s while some of then even are the full 10/10. Not that the larger women are ugly by any means either. They are all attractive too a surprising extent too. But most of them fall below a 9, but all of them definitely are at or above a 7/10.
You watch them for a bit, and you notice something unusual about a particular redhead woman. She isn't a member of the Amazon half, as she is too thin and delicate looking, however unlike the others, she alone had a curled red tail sticking out from above her ass. You also see that she is barefoot, and that a weird, thumb-like protrusion is on both of her oddly rounder feet.
She is also the only woman who is 100% naked. Unlike how the rest of the woman you have seen are wearing either a handmade bikini made out of cloth rags and leaves, or even just a skirt and nothing on their breasts, this woman is completely naked. The other woman don't seem to mind her too much either, but she definitely is treated a bit differently it seems, seeing as how she is not moving around as part of a small group.
"That woman is Cassandra." You jump and turn around to see Jessica standing there with just her unbuttoned blouse on. Cock still standing up fully erect, but clearly just used. "As you may be able to see, she is somewhat different than the other women here. Oh please don't get the wrong idea. It isn't like we shun her or anything. She just is too fast moving for most of us to keep up with is all. You see, back when Cassandra was still a man, he somehow got fucked by a monkey while he was sleeping, and apparently this is something accepted by the weird phenomenon. But unfortunately, none of us have been ever able to find that monkey. So Cassandra has been living for the last 2 years as a woman with a monkey's pussy. She started growing the tail about a month in, and after a full year, her feet were shaped closer to hands too. Her changes have since halted, or so we all hope at least, after her ears finished their changes around 7 months ago."
You are surprised that the redhead woman is actually part monkey, but also incredibly curious about her too. You really want to meet her now, if not just to see how she looks up close.