[At-Will Sex Change, Free Use: Herms (1B+1D), 2C]

You're not quite sure what you want the second thing to be, but you start explaining the first part of your idea to Charles.

"A world where anyone can instantly change into a guy or a girl whenever they want, huh?"

"Or both!" you say, struck by sudden inspiration.

"Both?" Charles asks, giving you a strange look.

"Yeah," you say. "You know, a hermaphrodite? With guy and girl parts?" Charles remains oddly silent, but you're too excited by your idea to really notice. "And being a hermaphrodite in public is considered an open invitation for sex and sometimes leads to huge orgies!"

Charles covers the lower part of his face with his hand and his shoulders start rapidly shaking up and down. You briefly wonder if he's having a seizure before he throws his head back and lets out a raucous guffaw. "Good lord, lad!" he says after winding down a bit. "I knew you were a freak, but this is just..." He can't even finish his statement before he's cackling madly once again.

He recovers more quickly this time. "Haha...been a while since I had a laugh that good..." he says. "Anyway, back to your—" he snickers a little bit before shaking his head quickly, trying to keep his cool. "—dream world. How casual did you want things?"

Oh right, you almost forgot about that. "Um, 2C, I guess? That's the highest one, right?"

"Yup," Charles says with a nod. "So, once more just to make sure I've got everything right. Anyone can turn into a man, woman, or hermaphrodite whenever they want." He pauses, as if he just thought of something. "Huh. That'll fuck with census data. Make pronouns a right mess, too," he comments with a half shrug. "Well, whatever. It'll probably work out. Anyway, the next thing is that a hermaphrodite in public is almost literally asking for sex from anyone, man or woman—"

"Or herm!" you interject, perhaps a bit more firmly than you meant to.

Charles, for his part, continues as though you hadn't said a word. "Or herm who's willing to give it. So I guess if you get horny you can just change halfway and wait for someone to fuck you. And if someone else gets horny watching, they can probably join in or turn into a herm themselves and get someone else to fuck. Actually pretty well thought out."

You're caught off-guard by what seems like genuine praise from the man who has done little but insult and belittle you.

"Still weird as hell, though."

Ah. There we go.

"And you want this to be something that people actually talk about to some extent. Like, maybe they keep track of the biggest orgies or something? I don't know." He looks at you, his attention having drifted during his musing. "And again, just to remind you: not everyone is gonna follow these norms. Remember, society always has its rebels. You'll run into people who advocate against the procedures and maybe even some crazy herms who complain about their status as free use cumdumpsters in the middle of being used...but seeing those who go off the beaten path could be fun, right?"

"So, have I got everything right?" he asks.

As you nod, he leans forward a bit, as if to bring something important to mention. "Before I finalize this, let me ask...how exactly did you imagine the whole sex changing process to go? You said...instantaneous, right?"

"Um, yeah..." you begin, not exactly sure how to word it. In truth, with how you initially described it, you did sort of imagine it happening on the spot as a sort of magical occurrence, like the sexual organs simply vanishing or appearing at will, but...

"Yeah, you already see where I'm going with this," Charles says as he reclines in his seat once again. "While the whole idea here is definitely possible, it's going to have to be done through more realistic means, mate. This isn't one of your tabletop games of Wizards and Warlocks, after all."

That...isn't even the name of the game.

"The idea of giving people the ability to magically alter their body at will like that is beyond our power here. It's as if you're asking to turn shapeshifting or some other superpowers into a societal norm...it's not really workable, you know? I know the idea of altering reality like this is already difficult to accept, so you might think I'm spouting bullshit in saying that we can't do this, but we've got our limits, too. If we didn't have limits, do you think I would have restricted you to two fetishes or ideas?"

He's got a pretty good point there, actually..."

"To achieve your desired setup here, the doctor's gonna have to change the means," he explains. "If I know the doctor—and damn, do I know that man better than I'd like to admit—he'll arrange it so that sex change operations are free for anyone to get. You'll likely find several hospitals and institutions solely dedicated to sex change operations. Furthermore, I think it's definitely in his ability to even tweak the potency of the procedures—he can make it so that the process wouldn't take much longer than that of a ten-minute vasectomy, meaning people could do it multiple times a day with no hassle. You might even find smaller clinics for sex changes inside bigger institutions like supermarkets or movie theaters, furthering your original idea of being able to do it practically anywhere. We'll try to make this as accessible as we can, understand?"

Seeing your somewhat saddened face, Charles reclines in his chair with a small laugh. "Ah, no worries, mate...you'll still get your orgies. We just can't give people the ability to magically switch up their body like that...I mean, I know this is all some smut story on a website that's already using a ridiculous fantasy-like idea as it's premise, but retaining some form of realism would be ideal, you know?"

Wait...smut story on a website? What's this guy going on about now...?

"Right then, lad," he says as he reaches into his pocket, completely ignoring the confusion on your face this time. He pulls out a small flip phone that looks about a decade old. "I'll give the doctor a call and you'll be on your way."

Punching numbers in, he puts the phone to his ear as the dial tone starts playing. Not long after, it stops and a muffled voice you can't hear very well from your end speaks up. "Yeah, listen, doc," Charles said. "This is...gonna be a bit of a crazy one. Yeah, no, it's way more than we could've expected, but hey, you promised the kid, so don't go backing out now...no, no, it'll be fine. It's just...gonna take a bit of work. Yeah, listen, listen..."

Charles relays the information to the point, and after some silence, the muffled voice says something very briefly before hanging up on their end, causing the call to drop. Charles turns his eyes to you as he closes his phone and stands up from his seat. "That's that. Now, if you'll follow me."

Getting up from your own chair, you follow the foreign gentleman through the maze of crates, occasionally passing an emotionless guard with eyes hidden behind heavy sunglasses. Your heart racing, you're still not sure what exactly to expect. How is this going to end...?

"Here we are."

Looking around, you see that you and Charles are suddenly at the end of a very long white hallway, walls painted with streaks of black. In front of you stands a large black door with curved handles of silver, standing impressively tall.

How...and when? Why are you in this hall? You were in the warehouse just moments ago...right?

"Don't think too hard, lad," Charles says with a dismissive chuckle. "All I need you to do is imagine where you want to be when you open this door. It's that simple. Could be your shitty apartment, could be the halls of your college, could be a movie theater downtown...just think of where you want to be as you start to explore and exploit the world you've created."

Well...you've already come this far. You've listened to this insane gentleman prattle on about your casual fetishism and you've ended up in a white hallway beyond all logic...so there's no point in trying to figure this out now. You decide to throw caution to the wind and go all the way, seeing this ride through to the end.

In a world where anyone can change sex multiple times a day with a free, quick procedure that could be done nearly anywhere, where hermaphrodites wander the streets looking for a quick bang...in a world where it's perfectly normal, in a world where it's been a long standing social norm...where do you want to be?