You followed the warlock to a dark, and menacing looking castle on the side of a volcano. You could smell brimstone, and see ash everywhere, but that hardly mattered to you as your lusts for sex was overwhelmed your ability to think straight. The warlock took you inside the castle, and an area that looked like a dungeon of sorts. "Here," the warlock said pointing to a large, and spacious cell that looked like it could be a habitat for an animal the size of a lion, or a gorilla.
"Wha..what master?" You asked struggling to speak your mind slowly being consumed by your lust. "Here is where you are going to be living now, I know it's not the best, but it hardly matters where for a demon like you. I will bring you down the essentials for survival when you need them, and feel free to make yourself at home." The warlock said and you nodded to him only thinking about one thing, which was a big meaty dick to thrust into you moist clit.
You walked into the cell after your master opened the door, and after you were inside he closed and locked it behind you. You then realized how large the cell was, and that it was circular, and in the center of a large room that had other cells surrounding it. But, you still succumbed to your lust, and you found that you were penetrating yourself with your devil looking tail, and viciously groping your tits. "Ahem," the warlock said, and you look over to see him, and he continued to say,"For most you will serve as a torture device, but for you, you're duty is simple. For any being I bring to you, ravage them with your body, and fulfill what your instincts already desire. Except for the few servants I have around here to clean up after you, and feed you that is. This may be one of the only times you see my Bimbo, just do whatever you want in that cell when you aren't appeasing yourself." The warlock said then walked off, and left you alone inside the dungeon cell.
You then felt like you had to go to the bathroom really badly, but you couldn't escape the cell. You tried to hold in your bladder, but it appears as if your lust suppresses your natural body urges as well, and you squatted down onto the cold stone floor, and just let it all out. Pissing from a vagina was the weirdest sensation in the world for you, but you liked it, and it felt so natural to do it. You also had to take a big shit so you did that immediately following pushing a large turd out of your anus. You barely even noticed that your urine was now touching your feet, and toes, but when you did notice you got away from it quickly.
You left a puddle of urine, and shit in the corner of the cell. Your urges now felt suppressed to the point where you could think clearly again. "Oh god did I just do that? What's going to happen to me exactly? I've become a slob, a slut, a god damn...bimbo." You thought to yourself as you looked down at your large purple breasts and then you heard a voice, a male voice. "I guess you're Bimbo, master really went through with it after all." The voice said, and you turned around to see a dragon with pitch black scales on his back, and red ones on his stomach, and he seemed to be trailing a dark shadow-like mist behind him.
"Wh..who are you?" You asked feeling afraid
"I am master's head servant, and you are his familiar. I see you already have made a mess, and recently considering you aren't trying to fuck yourself. I will send someone down immediately to clean up your waste, but I guess you have many questions. So let's use the next couple hours wisely before your lust kicks back in." The dragon said
"Who are you? Where are we? Why am I here?" You asked frantically
"I am Brimstone, I am a demonic dragon, and unlike you I serve our master willingly and wasn't forcefully summoned like you were. We are inside the formally demonic castle Grüthus, and you are here because master wants you for something and you now live to serve him. From what I understand you have a very special enchantment on you as well, and your duty is to "treat" yourself to our prisoners." The dragon, Brimstone said
"Okay then, why this?" You said gesturing to your body
"Master said he wanted a way to break a being morally, and this way he can through you. A succubus must look her part, and you seem to have perfected the physical features, or at least are as close to perfection as you could be. Of course I personally wouldn't take chances with a succubus, because I wouldn't lower myself to, but humans can be broken quite easily. I suggest that if you want to get used to your body now, you can suppress your future heat by doing what you were earlier and pleasing yourself." Brimstone said
"Uh...I..." you began then paused seeing your body with more self control.
"Go ahead I won't judge, and a succubus has her needs." Brimstone said, and you then sighed and cupped one of your breasts and gave it a squeeze. You also felt your plump ass and squished your cheecks around with a feeling of arousel. You then squeezed a teat, and you saw it produce a warm orange, and yellow glowing liquid.
"Oooh, that's strong! What is this?" You asked taking a bit of the liquid from your breast, and looking at it closely.
"That's demonic nectar, think of them as pheromones that work on humans. Otherwise, I have seen your kind do...interesting things with it that I prefer not to say. Here take this too, it may help enhance your allure, or at least that's what master says it will do. Master also said to tell you that he says to use it immediately." Brimstone said giving you a bracelet.
You paused for a moment then put the bracelet on your left arm, and suddenly you felt your body changing like it was before. "Oh...god! I...I'm...changing." You said feeling a rush of pleasure race through your body. You then grew taller to about 7'6' and everything grew out, your hips widened even more, and your ass swelled larger to match your height. Your breasts swelled again becoming F cups, and your nipples fully erect. Your mouth lips then expanded giving you more of a slutty appearance, and your overall form became sexier. Finally you pussy lips also expanded to make it look more noticeable, and your body felt more powerful.
"Heh, looks like master wanted to give you the perfection that your body wanted. Wait what's happening down there?" Brimstone asked
You felt a bulging sensation, and your vagina moved back as if it was trying to make room for something. You moaned, and screamed in pleasure as you felt and saw large dick and balls grow in and expand. Your dick gre extremely larger than anything you could imagine, and it looked like it was 3 feet long, and 2 inches wide, and your new balls were like oranges. You then felt pressure again just below your breasts and you moaned as a second set of breasts grew in, and swelled to FF cups. Finally your first breasts swelled to G cups, and you looked like an Amazonian woman with four gigantic breasts, and a dick that outclasses any man.
"Oh wow, I don't know what to call you right now. I mean, an incubus is male, and a succubus is female, but you are both of them. I'm speechless actually for this..." Brimstone said, but the you interrupted,"Oh god, not again!"
You felt like you were going into heat again, and your dick immediately became fully erect, and you held it in your hands as you groped your new breasts in combination with your old ones. "I guess that your new member shortened the timer a bit...I should leave." Brimstone said and rushed out of the dungeon. You began jerking off to yourself rubbing your cock, and jamming your tail into your pussy again. You then had a really bad idea, and you put your cock into your mouth and began sucking yourself off. You didn't care in you cummed or not, which you did, and the only thing you could think about was having sex.
You then heard the dungeon cell door open, and you saw...