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Perfecting the Princes

Part 3

For Engy

By Draconicon

The plan was agreed between the two princes and their new friend-master. It was hard to tell just what the dragon was in the grand scheme of things, but even in the midst of his new pleasure addiction, Cadence could tell that the dragon had an authority over them that wasn't entirely natural. It was something that was either magical or something that was born of the musk that he carried, but the stallion cared surprisingly little about that. As long as they got to have the fun that the big guy promised them, then it was all good in his books.

That was a departure from his former self, he knew, but really...what was the Princess of Love doing if she - well, he now - wasn't getting involved in various fuck-fests? She had been trying to encourage a sort of friendship love out there when she could have been using her power to start inducing lust, to start getting people to love on a far more physical level. The way that could break down borders, bring down the barriers between people, was all the more important when one realized just how chaste so many horses throughout Equestria were.

The Princess of Friendship had become the Prince of Lust, and he had no problems with that. In fact, he rather relished the title.

And that was why he had agreed with the plan that Twilight, the dragon Engy, and he had come up with in the dungeon in his old house. If they were going to spread this lust through the country, if they were going to educate the different ponies in the true pleasures of cock and lust and orgasm, then they needed to get the princesses of the sun and moon taken care of. If Celestia and Luna were still in their old, chaste ways, then they would cause problems. They already had when Cadence had been female, pushing her to treat her husband in the right way rather than in the slightly debauched way that they had started to behave.

That was another thing that he would have to deal with, he supposed. Dealing with Shining would be a bit tricky, but Cadence knew that his husband had had a few gay experiences while in the Canterlot guard. It wouldn't be hard to get him on board with being with a guy full time.

But that was all in the past. They'd agreed to wait until near the end of the night, waiting for the point where the Twilight hour came by, and when the princesses would be on the verge of switching with one another. Before Luna could hide away for the day, before Celestia could take power over the sun, they would make their move.

Cadence was waiting in Luna's quarters, and the pink pony had been using that time to get used to his new body. The feeling of his new dick was different enough - way different to the strap-on that he had used on Shining more than once - but it was the balls that were really, really different.

A cock was something that you could get used to, though Cadence hadn't quite reached that point yet. It swung and swayed between his legs constantly, his arousal keeping it pushed forward and out of his sheath constantly. He had yet to go soft, despite the fact that he had been forced to cum hard on the dungeon table. He didn't know how long that was going to last, but so far, he had been aroused as all hell.

His balls, however, had yet to drain even a bit. Every so often, he felt the compulsion to reach down, to feel the huge orbs that went almost all the way down to his knees. They were constantly in the way, a pair of sensitive orbs that begged to be touched but winced to be caught between his thighs while he walked. It had forced him to use his wings more often than not, to fly rather than risk getting his balls crushed.

Yet, for all that, they were magnificent. There was something about having them so big that made him feel not just more manly, but more himself. It was like the feeling he got when he was particularly stiff now, like the sheer size of them was his natural state. Big, heavy, pulling at him, constantly reminding him of his need, constantly reminding him that it was natural to be so horny, so virile, so...eager. It was like a gentle pull by a benevolent master that told him that this was what he should be like, that there was no shame in lust.

He hoped that he could keep that attitude going with his own magic, keep others feeling that way as the days went on. He would be a poor Prince of Lust if he couldn't.

Cadence was just starting to fondle his balls again, lifting them up from between his knees with both hands - they were big enough to need that - when he heard the flutter of the dream-like wings that Luna flew on. The time had nearly arrived, and he needed to leap into action.

The window opened, the fluttering sound of the night stallions and the chariot they pulled following. Cadence jumped to his feet, slippery soles sliding slightly on the polished marble floor. His horn glowed as he pulled at his power, waiting for just the right moment to strike.

The guards did not enter the room, but the Princess of the Moon did. She wore the armor of her station, great steel-blue pieces of metal that lay over her shoulders and along her sides like the armor of some amazon. Her bust was pushed up and forward by it, and the steel plates wrapped around slender hips. Muscular legs were almost exposed beneath the lower loincloth that she wore, and gold sandals tied their way up her legs, encasing her calves and feet in something fancy and protective at the same time.

The black-furred alicorn princess turned to face her, her eyes curious for a moment, then wide.

"What is the meaning of this -"

Cadence didn't let the more pompous of the great Princesses get any more words out. He knew that he had to strike while the guards were leaving, before Luna's voice got any louder. The ball of light on the end of his horn went flying, striking Luna across the chest.

There was more resistance than there had been between him and Twilight, as was to be expected. The Princess of the Moon was a more powerful magician than Cadence had been in the past, and Twilight's power had always been exceptional, breaking down barriers that nobody knew could be broken.

Yet, the Prince of Lust had an advantage that Luna did not. He knew how to please a mare, how to tease them out of their shell, and he planned to do just that.

The muscular, naked stallion walked across the room, his power flowing over a bubble of black light that Luna had managed to throw up around herself. It couldn't push his power back, but it did keep it from reaching her properly. The princess was obviously throwing most of her energy into it, however, keeping herself from using anything more to defend herself. Her arms were up, her wings straining to hold the magic of lust back, and Cadence smiled.

"You're fighting me so hard, Princess. Please, allow me to show you the pleasure that you are missing."

"You have been changed. Whoever you are, I will not allow you to threaten Equestria."

"I threaten nothing," Cadence said, bowing, going to his knees. "I merely offer you a pleasurable service, something that may bring you to great heights of bliss. If you will allow me the use of my magic, I swear that you will find it to your liking."

"Lies."

"Truth, Luna. The best of truths."

He reached out, and with the barrier so focused on keeping his magic out, he was able to slide his hand through it. The princess gasped as he forced his fingers up beneath her loincloth, and Cadence chuckled.

"I knew that you flew without undergarments. You aren't the only one that can read dreams, Your Highness."

"What...ah - ah!"

The black-furred mare had never been one for more garments than were needed, and Cadence had seen many things in the erotic daydreams and regular dreams that the Princess of the Moon had. Luna had long held an urge to show off, to be seen as the equal to her sister, and that included being a sexual object of desire. The way that she flew around, the way that her clothes had always been on the verge of showing off her ass, the way that she had been almost begging someone to make her show her body to the masses, meant that she had a weakness. Many weaknesses, as those that denied their lusts would always have.

Cadence managed to find his way back to the princess's ass, slowly sliding a finger inside and wiggling it back and forth. It wasn't that hard; there was plenty of 'lube' that was slowly rolling back from the Princess of the Moon's pussy, and he could tell at least a little of his lust magic had managed to get through before Luna had thrown up the shield. The princess's body shook, her legs quivering, her knees starting to come together.

Oh, her thighs tried to stop him from fingering her ass, but Cadence knew the woman's dreams. He knew what she wished would happen, and he could deliver that. He stood up slowly, keeping his hand between her legs, between her ass-cheeks as he fingered her little pucker, making it stretch around his fingers, making her gasp for him.

"You know what you want, Luna. You know that I can give you pleasure...give you bliss...make you feel the way that you've always dreamed of feeling. I can give you freedom, freedom from all the propriety that you feel that you have to be bound by. I can give you the ease that comes with being like me..."

"What...what about...Shining?"

"Oh, he'll be eager for this...and so will your sister, after Twilight gets done with her."

"She's...she's going to..."

"He. He's like me, now. And soon, so will the Princess of the Sun."

Luna gasped, and in that moment of distraction, her shield collapsed. Cadence worked quickly, slamming the Princess of the Moon into the bed, using his magic to conjure up restraints, bindings, bondage that would keep the other member of royalty from sliding free again. A ring of powerful white light wrapped around the other unicorn's horn, keeping her from using any more magic to slow this down.

Pew, pew, pew, went the blasts of magic from Cadence's horn, stripping away the princess's armor. The steel went flying, hitting the floor with one clang after another. Nobody would come to check that out. The Princess of the Moon was known to be loud as she undressed, and nobody was allowed to come and check on her, lest they see her in the nude and get struck dumb by the sight.

And Cadence would admit, the woman had a good body. Not a great one, as her muscles were lean and mild, conditioned rather than thickened, and her curves had been restrained by that during her time as a princess. That said, she still looked decent, and there was plenty there that could be made better.

Particularly once she was changed to a he.

Cadence smiled as he sat on the edge of the bed, running a hand along the princess's bare foot. He could remember looking up to Luna, seeing the princess as someone that he could aspire to be like, someone that could be admired from afar and enjoyed. Now, he saw her for what she really was. A good, little slut.

Or, maybe...we'll see what she becomes...

After all, he had been in charge with his relationship, but now, all he wanted was to be filled from behind. Cadence could feel the twitching in his ass, could feel the hunger for a good dicking even now. The feeling of being empty was already a distraction, and maybe, maybe, Luna would turn out to be someone that'd be good for fucking. For all the muscles on his frame, for all that he looked like a stud, Cadence knew that he was a good old bottom now.

He growled in his throat as he imagined getting fucked, his flared cock rising up in anticipation, but he pushed that thought out of the way for now. He had work to do, and he needed to do it fast.

Focusing his power into his horn, he smiled down at Luna. The princess was finally starting to calm down a little bit, and that meant that the power would have a better chance of working properly on her. There'd be no way for the pleasure to be distracted, to be diverted into something else. She would become a prince, and they would have some fun.

"Are you ready?"

"Mmph...you seem not to be allowing me a choice."

"You have a choice. You can enjoy it, or you can hate it."

"...Will it be pleasurable?"

"Oh, I can promise you this. It will be one of the hottest things that you've ever felt."

The Prince of Lust smiled as he lowered his head, the white light bursting from the tip of his horn. It hit the woman right in the chest, and she immediately arched her back, gasping for breath right from the start.

"AH!"

She huffed and puffed, her blue fur suddenly soaked with sweat, drenched as she started heating up from the inside. Her clit winked down at her pussy, flicking in and out of its hood almost like a stallion starting to swing his cock up to slap against his belly. She was masturbating in her own way, trying to get off already, even as her pussy was heating up, even as her body was warming up with the rutting need that Cadence's magic inspired.

The stallion stroked his cock slowly as he watched the first bits of transformation start. He remembered how Twilight had taken away his breasts first, but that seemed to be the wrong way to go about it. Why take something away first, when they could give something better to keep the princess's attention on that rather than on what she was losing?

Even as that pussy winked and twitched, even as it juiced enough to soak the sheets below the princess, Cadence forced his attention on that clit. It was already moving, pushing out of its hood, and he encouraged that movement with his magic. Having it grow from right where the clit was would result in a weird placement for it. It needed to be slightly higher, a bit more adjusted to the crotch.

The artful sub moved it along, forcing that pink-red dot to keep growing, swelling outwards as it pushed upwards. The Princess of the Moon moaned out loud, clenching her hands into fists, her toes curling hard as her pussy began the slow process of sealing up, as her body began to warp under the talented magic of the Prince of Lust. Cadence smiled as he encouraged that change, watching as the little slit started to seal, as the big clit started to grow.

As the lower lips pressed together, the clit finally pushed up from the flesh around it, starting to rise like a proper cock. It only had an inch or two of length at first, but that quickly changed, more and more flesh drawn from the groin, pulling out as if it was already rising from a thick sheath. Cadence reached down, wrapping his hand around it as grew, giving it a few strokes.

Luna arched her back against the bed, her horn almost stabbing into the headboard of the bed, but there was nothing that could stop this now. The change was hitting her harder and harder, and it was taking more and more out of her.

Cadence shivered in his own lusts as he watched the clit turn into a cock, watched as it swelled outwards. The head was already starting to take on that umbrella shape, the flare starting to spread wide, to make it clear that it was going to be much bigger than the shaft itself, much wider. The slit in the tip that had already started to form bulged, getting wider, thicker like a proper horse urethra should.

The more that the clit changed, the more that the pussy disappeared. As Cadence glanced back down, rather curious as to how well the princess was taking her change, she saw that there was barely a line left, a line where the two sides of her pussy had met. There was no more way in than there was a way through a wall without damaging it. There was no more femininity down there, no little bit of an opening some lucky suitor might try and play with.

She had gone from female to shemale, and soon, she'd be a full male.

Cadence slid one hand down, rubbing his finger against the woman's pucker. While Luna gasped and moaned from the pleasure of her changes, he slid a finger past her pucker. He reached around inside, feeling about to see if she'd already grown -

Yes, she had. There was the little bump of a prostate, the little spot that needed a bit extra attention. She chuckled to herself, pressing down -

"AH!"

Luna gasped, her eyes going wide, her growing cock suddenly lunging forward. Cadence leaned to the side to avoid getting thrust into, feeling it slide along his belly regardless. He chuckled, watching as the shaft rose from six inches to eight, to ten, to twelve. It was going to be a proper horse cock, big and fat, something that would spread his asshole out good and wide when he finally got around to riding it.

"Looks like you're getting into it, Luna."

"Mmmph. This is a most...difficult to control piece of anatomy."

"It's a hard cock."

"Mmph. Vulgar."

"And you love it."

"...Perhaps."

"Perhaps?"

He stroked his finger along her prostate again, and the Princess of the Moon yelped, thrusting her hips up again, her cock flopping back against her belly as it almost reached up to her modest breasts.

"Nnngh...that's not...that's not fair..."

"It doesn't have to be fair for you to enjoy it."

"Mmmph."

"Come on. You love it."

"Ah...ah..."

The fingering was definitely serving a point to drive home the power of pleasure to the Princess, but that wasn't the only reason that Cadence was fingering that hole. He was adding more to it, taking some of the curvy hips of the princess away and adding something else.

Muscle began to sprout along the thighs and back calves, and then rising further, along her ass and abs. The dark princess was already the stronger, physically, of the two monarchs, but she had never had muscles like this. Cadence grinned as every little bulge started to pop into place, filling out her fur and making her look all the more majestic, all the more powerful as a warrior woman.

Well, warrior something, considering that throbbing cock. One finger became two, and Luna screamed in pleasure as she got her prostate pummeled, her ass filled.

"Mmmph..."

"You're changing, my dear. You're changing into something better. Something strong, something powerful, something that never has to hide what she wants ever again."

"Mmmph...give it to me..."

"What was that, dear?"

"I said...give it to me!"

Luna had never been one to shout for more vulgar things. Calling out loudly in the court did not count, nor did the echoes of the war screams that she had carried out in the past against the enemies of Equestria. The few times that she had had lovers in her life, she had allowed them the pleasure of using her without getting into it. In truth, she had never enjoyed the company of others the way that other mares did.

Yet, this...this was something different. This was something better.

The Princess of the Moon arched her hips again, fighting against the ring on her horn that restricted her magic. She was no longer fighting to get away from Cadence, but rather to take more pleasure. She snarled as a mare never should, growled in a way that a proper princess would never allow herself to do, but that was because of her new...her new...

Her new cock, for all the word was vulgar. It was flooding her with need, to do something to that muscular bottom on her bed. She wanted to bend Cadence over and rut her until the next moonrise, and perhaps past it. She wanted to take every bit of pleasure that she could, and then take more.

As her ass swelled, as she felt the bubbling size of it pushing out and making her tight, smooth bottom into something that was taut and large with muscle, bubbling out and making itself that much more firm, she could feel the muscles that came with it. She could feel the tightness in her hips, the sheer power in her core that would allow her to rut with such force that she could break any ass that was presented to her.

The magic wasn't done, either. There were other changes that it wanted to make, and she surrendered to it, no longer fighting it. She would become a stallion...and then she would show the Prince of Lust what it meant to give someone like her this sort of power.

Luna groaned, arching her back as her breasts started pulling in, dragging their way back into her chest. She had never been that endowed, but she had been able to show off enough to get the eyes of many stallions. Now, that was fading, her feminine curves finally giving up the ghost. It felt like something pulling inwards, almost like the pleasurable feeling of someone or something sucking on her nipples, only turned around so that it affected her from inside, instead.

With each slow sucking of her fat, her breasts, her boobs, she felt the rewarding pleasure of them disappearing. They were flattening out, bit by bit, going from handfuls to little bumps, little things that one could pinch, and soon even those were gone.

As she finally went flat-chested, she felt another change. The final big one, the one that was rising from between her legs, from just beneath her cock. This would be the push that took her from female, to shemale, to male.

Mmmph...give it to me...give it to me so I can show everyone what I truly am...make me the stallion of the night...make me him!

It was like a weight between her legs, a desperate weight that was trying to get out of her. She could feel it pressing against her taint, swelling between her cock and her already-bulging ass. It was getting harder and harder to ignore, almost like something that was passing by her prostate on its way to sliding out of her.

It rubbed against her insides, then made her feel swollen between her legs, heavy, warm, full. That full feeling only got stronger as the seconds ticked by, and her hands curled into tighter and tighter fists, her jaws clenching as she wanted nothing more than to reach down and fondle herself.

The stronger the feeling got, the harder the need hit her, and her magic grew stronger, stronger, and stronger still, until -

CRACK!

The bonds that held her finally snapped, and she was able to sit up. It was easier now with no breasts to throw her off-balance, and she reached between her legs.

There, there it was. The beginning of her balls, the slow-swelling bulges right under her cock on the verge of pushing through. She rubbed them, felt them, sensed the churning that they were doing as they got heavier and heavier.

"Release me!"

Cadence did as he was told, and the princess - no, it was prince, now - got to his feet. A flash of magic from his horn summoned a mirror, and he stood before it, looking at himself.

He was not the muscular stud that Cadence was, at least, not yet. He still had a more slender build, his shoulders less wide, but his muscles more obvious for all that. His cock throbbed, pointing straight forward, and it pulsed with pre-cum as it spurted it over the mirror.

Luna pulled on his cock, holding it up as he watched the bulges of his balls finally push free. They dropped a few inches, the size of eggs, but that was hardly enough for a prince, wasn't it? He pushed his own magic down at it, forcing the transformation to continue, even as Cadence's power still rushed through him.

He watched with a grin as his balls dropped further, churning, filling, and spreading out. He spread his legs to allow them to rest between his thighs properly, watching as the leathery sac slowly dropped further, further, and further still. It ground against his thighs all the way down, and he groped his cock right under the head as he groaned in satisfaction.

His ass was wide and heavy, big and full, just like the moon, and he had a bit of a pear-shape going on. Not that that was a bad thing; he was pretty sure that there were a lot of guys out there that would enjoy a bottom-heavy man, someone that would be free to fuck them with all the power in his abs and core.

Running his free hand along his muscles, he still felt his eyes drawn down to those filling orbs. He leaned back a little, resting them on the foot of his bed, and they almost immediately started to sag outwards, covering more of the sheets as their own weight began to flatten them out a little bit. His sac wrinkled ever so slightly, only to tighten up again as more seed filled those heavy orbs.

His cock was squirting pre-cum like a leaky hose, pumping it out by the pint. He rubbed it along his shaft, but that wasn't enough. He needed something to milk out more of it. And he had just the person for that.

Luna turned, but his fellow prince had already gone to all fours, thrusting his bubble-butt of an ass out, spreading his cheeks with one hand and showing off that swollen hole, begging for the breeding that he needed.

"Heh, you come to prey on the princess, but you really wanted a prince to use that slutty hole of yours, hmm?"

Even his speech had changed, becoming more common, becoming more eager to dominate. He was the power of the night, the rough, brutal use of another in the darkness, where others didn't see the secrets. He was the one that knew all fantasies, that knew how to bring the full strength of rut on others.

He was the night stallion, and he needed to fuck!

His muscles might have been more toned than thick, but that didn't mean that he was a weak stallion. He grabbed hold of those wide, muscled hips and he was immediately able to overpower the somewhat bigger male. Feeling the need bubbling up between his legs in a way that he had never felt before, Luna ground his cock between those ass cheeks, slathering them in pre-cum, milking himself in the way that stallions had asked to use his breasts in the past.

But that was hardly enough. Even though those muscles were hot and hard, even as the cheeks pressed down on him from both sides with enough force to try and milk his cock of everything it had, it wasn't enough. His tip kept bumping that hole, and Luna felt lost to an almost bestial urge, the urge that had driven him to protect Equestria again and again before he became Nightmare Moon, and then again after that. He was the warrior of the land, but more than that, he was the rutting force, the night-time urges, the things that people tried to hide and deny, the hard use that they wanted to do and the stuff that they craved and hid.

No more hiding.

No more pretending.

With a rough whinny, he lowered the head of his cock - that thick, fist-thick head - right to the other horse's hole. He ground against it, feeling it resisting for a moment, but only for a moment.

POP!

Then he was inside, and it was hot, and tight, and gripping, and just what he wanted. Just what he had always been told it was like. The stallion groaned, arching his back as he savored that first feeling, and he couldn't help but smirk as he felt Cadence finally falter a bit, slumping down and needing to be held up by the stronger stallion. His muscles were still growing, still filling out, and he was going to be bigger than Cadence by the end of it, but even now, he was the stronger.

"You like that, hmm?"

"Oh, fuck..."

"You like to talk dirty, you little fuck-slut?"

"Oh, yeah, talk to me like that...fuck. This is so much better..."

"So much easier..."

"So much...ah...ah..."

Cadence couldn't talk so easily once Luna started moving his hips, and that was perhaps a blessing. He rather enjoyed the way that he could tease the other male, to see the stallion moaning and whimpering under him. He wanted more of that. He wanted much more.

Feeling the flare of his cock grinding against the inner walls, he took that to his advantage, thrusting forward in quick motions, then slowly pulling back, rolling his hips to make sure that he attacked every sensitive spot in that tight hole. It didn't take long for the Prince of the Night to find those sensitive spots, those weak spots that he could hit hard. The Prince of Lust would submit to him, and they would...

They would...

Fuck, he'd figure out what they would do later. Right now, they were rutting, and that was enough.

Luna slammed forward, burying his cock completely in that hole, and his balls swung forward, a light smack against the other prince's balls. The electric shock of that ball on ball contact sent another shiver of pleasure through him, his cock twitching -

"Fuck!"

Cadence groaned, tightening up, and Luna realized that the good little bottom boy had cum. He could feel it splashing on the floor, hitting his feet, soaking his soles. He chuckled.

"You're going to lick that clean later."

"I know. Make me do it again; I want them good and messy."

"Heh. Oh, I'm going to make you do it again..."

Again and again and again and again, for that matter. He was going to hammer this ass until the sun came up, and then he was going to keep going at it until the moon rose afterwards. He wanted to see this little slut realize just what he had awoken, just how much had been hidden in the night out of shame and out of guilt.

Now, it was free. Now, the pleasure could run free, and the night could be as rampant with the pleasures of the flesh as it wanted. There would be no more shame, no more hiding anything. They were as open as his balls were, now, too big, too obvious to be put back in the closet.

Luna pulled out, making that hot hole pop, and then rammed right back in. As Cadence moaned under him, he leaned forward, pressing his hardening chest against the other stallion's back, their muscles grinding on each other. He slammed in and out, in and out, taking up a hard, rutting pace that would have put other stallions to shame. It had been centuries since he had gotten this into sex, and he wasn't going to waste his time with anything less than a hard, heavy, frantic rut.

After all, his balls would never run out. His cock would never go soft. He was the ultimate in this...he was the night stallion...

And he would show it.

Even as he felt his first orgasm coming up, even as he felt the pleasure stirring in his balls that meant that he was going to blow his load, his magic was already running through him. They were growing again, pulsing, churning, falling further and further between his legs. They sagged past his knees, forcing his legs further apart, making his pre-cum flow faster and more furiously than ever. Each thrust made them swing harder, if a bit slower, and he groaned as his cock felt the tug every time.

The night is mine...and the night is the time of pleasure...of dark fantasies...where everything...EVERYTHING...is permitted...

And with that, he took what he permitted himself. His first orgasm...the first of many...and one that started flooding Cadence like he was some sort of childish water balloon, belly swelling before that flood of seed started shooting right back out of his hole.

It would be the first of many; Luna had a lot of time to make up for.

The End