A King's Harem

Sombra sat on his throne, reclining back with his cape as comfort against the cold hard crystal, and otherwise naked. Sat around the throne were his four personal slaves, intent on kissing his legs and hooves and balls. They had about them that timorous, intoxicated aura that came from how he'd made them see him as a god. They would look at him in adoration, occasionally quiver, always breathe heavily, and sometimes moan just from a look or touch of his. It would have been enough to keep his erection strong even without their continued attention to it.

He was relaxing, as he usually did ever since he'd reclaimed the Empire. Mental control over his citizens meant things smoothly ran themselves, and he could focus on what was important, that of course being he himself and his own pleasure. At that moment, though, he was also waiting on something. He'd had an idea, and being that he was busy with the far more important task of ensuring his slaves kept servicing him, he'd let some other unimportant unicorns figure out the details. He'd heard from them that they'd succeeded, and soon he'd get to enjoy the fruits of their work.

He did not have to wait long. As he was amusing himself by probing Flash's asshole with his magic, making the pegasus squirm and whimper and cum in his cage, a soft knock came to the door. Without looking up, Sombra teleported what had been left beyond it to his own lap, as he'd instructed the unicorns to leave their work there and not bother him. He wasn't going to allow some lowly ponies to see him when it wasn't needed, and he certainly wouldn't let them interrupt his time with his best slaves.

On his lap sat a leaflet detailing a few magical instructions, and a peculiarly shaped crystal glowing lightly. It wasn't cut to any immediately recognisable shape, but there was still some regularity to it. Sombra quickly scanned the instructions and then incinerated the paper. No point risking anyone else but him knowing the spell, even if he'd specifically asked for it to not be reversible. He'd wipe knowledge of it away from the unicorns' minds later, too. Holding the strange crystal in his hand he stood, tall on his broad muscled legs, and carelessly pushed the four kneeling before him aside as he strode forward. Then he turned, scoffed, and materialised chains around their necks which he yanked roughly to drag them toward him.

Shining, Thorax, Sunburst, and Flash only moaned at the rough treatment, which did cause Sombra's cock to throb and leak slightly. Being hurt by their King was just another way to receive his will after all, and that was good above all else. He watched them, for a moment just enjoying the sight of them looking to him in utter, mad adoration, as he'd forced them to by warping their minds over and over, and then he spoke. "Line up, face down, legs straight, tails out of the way." His voice was deep, commanding, coloured by lust and malice.

All four stallions obeyed without a hint of hesitation. They placed themselves with their faces against the ground and their asses sticking out for him, one beside the other, fully exposed and waiting to receive whatever it was he wished to do. Placed like that he could clearly see the buttplugs each one of them bore inside his hole, and the tight metal cages around their cocks keeping them constrained even as the sheer arousal of just being close to him would have had them hard and throbbing and leaking.

He moved to Shining first. The once muscled stallion had slimmed a fair bit ever since taking his proper place as Sombra's fucktoy, now looking much weaker and perhaps more girlish but still with hints of his old physique. Sombra gave a heavy, hard slap to the unicorn's firm ass, eliciting a yelp from Shining that was probably closer to a guttural moan. Then he spread Shining's asscheeks apart as the flesh beneath his hold reddened from the blow, and ran his thumb over the onyx coloured buttplug nestled there. Unable to help himself, he ground his fat cock betwixt Shining's buttocks, pushing them together with his hands, but forced himself to stop after a few strokes, before getting too carried away. He had something else to do.

Breathing deeply to steady himself, lest he forget his plans and start fucking Shining's ass right there, he moved the strange crystal to the side of Shining's leg, over the blue and purple shield that was his cutie mark, and sent out a pulse of magic from his curved red horn to the oddly cut gem.

Shining immediately shrieked in pain as the spell began to take effect. Crackling red sparks of energy arched from the trinket held in Sombra's hand and struck at Shining's thigh, singing his coat and burning in his nerves. Yet still the unicorn held his position, aware of what was expected of him. Knowing he had to obey his King above all else. The smell of ozone filled the air as the magic channeled through the crystal clashed with and overrode the natural one within Shining. The red light filled the throne room, casting long and twisted shadows all over the walls and floor. A sickly sound like metal being forced to bend filled the air as the spell's effects slowly became visible.

Shining's cutie mark was warped, bent, smudged like paint getting washed off his flank. It twisted and crumbled in on itself, blackening like it was being burnt away. Shining howled in pain as he felt a deep, old part of himself being ripped and reshaped. A scorch mark was all that remained on his white coat after just a few moments, but the spell was not finished yet. Starting from that black, unnatural spot, the miniature lightning bolts began to trace patterns over Shining's coat, and like needles dipped in ink they seared new colours and lines into the stallion's thigh.

A new cutie mark, one fit for a slave such as Shining had become. One to truly display his new role as Sombra's plaything and nothing else. One that no magic could ever remove, a permanent mark on his body that would remain even in the absurd, impossible scenario of him somehow ever being freed from his King's control. Sombra couldn't help himself, and as he watched the change take place and listened to Shining's screams slowly turning to moans he began to stroke himself, dripping pre over Shining's back.

A black heart, wreathed in purple flames, wrapped by thorny red vines that resembled chains, with an acid green keyhole in the middle. That was the new mark burnt on Shining's flank, a final, undeniable symbol of the stallion's identity as Sombra's property in mind and body. The red light faded, and Shining's moans and screams ebbed. He was left panting, muttering wordless sounds, and violently shaking from the experience. Beneath his face was a puddle of his spit, and between his hooves one of his precum.

Sombra admired the spell's work with a pleased, satisfied expression, openly jerking off to the sight of it and Shining's state. Without waiting further, he stepped to the side, and slapped Flash's ass hard with the crystal held in his palm. He activated the spell immediately and held the gem there, as the scene repeated itself. He masturbated to the sounds of Flash's cries, to the sight of the last trace of his old self being stripped and replaced with a brand identical to what he'd given Shining. A brand, yes. He was branding them, like cattle, and removing what made them ponies. They were beneath him. They were his.

The light didn't even have time to fade before he used the spell on Sunburst too, as soon as it had finished doing its work on Flash. Before the magic had even begun to draw the brand on Sunburst after removing his cutie mark, Sombra came over the unicorn's fat ass. Flash, who'd always been more lithe compared to Shining, had become downright thin under Sombra's care and lack thereof, and he'd failed to keep himself up under all the strain of what was happening. The sight of him falling had been enough to push Sombra over the edge, and the sounds of Sunburst's throaty moans carried him all through his orgasm. He finished cumming a bit after the spell had finished inscribing his dominion over Sunburst's coat, while the unicorn he'd coated in his seed panted and shivered but kept himself up thanks to all the magic he'd been fed.

Sombra breathed heavily, still stroking himself as he let the waves of pleasure roll over him. No need to rush, after all. He still had all the time in the world. He stepped back on very slightly wobbling hooves, then sighed contently as he focused his attention on Thorax, still sticking his ass out for him.

The changeling had no cutie mark to strip him of, of course. He'd always been just a drone, if one Sombra was particularly fond of using. Still, branding would fit him too, and he'd had his unicorns account for him too when working their magic.

Sombra brought the crystal to Thorax's thigh. Red light flashed and electricity shot out of the gem, carving Sombra's brand onto Thorax's chitin. The weak little drone screamed and trembled, and before the spell was even finished his knees gave out and he landed on the floor. Sombra chuckled and stroked himself faster at the sight, as the magic finished inscribing the flaming, locked heart on Thorax's exoskeleton.

Both satisfied and excited still at the sight, he moved back to Sunburst, still standing as instructed, and circled him, making sure to heavily step over Flash in the process. After a moment of consideration, he brought the oddly shaped crystal to his crown and let the centre of his headpiece shift slightly to embed the jewel into it. Once that was done and he was once again standing behind Sunburst's round, thick ass, he roughly grabbed the unicorn's hips, pleased at the way the new marks on him still gave off warmth, and shoved his cock forward.

The buttplug inside Sunburst's ass dissolved into shadows around Sombra's cock as he entered Sunburst, acting as lube as he dove in deep into his slave's behind. Out of his four slaves, the studious unicorn had definitely turned out the more plush, but Sombra quite enjoyed getting to knead and pound his behind.

Sunburst moaned loudly at being penetrated and stretched anew, his body still sore from the branding, and he only didn't come because he never could without his King's permission. Sombra quickly got into a rhythm as he went about fucking his ass, and he looked on to his other slaves as well.

He grabbed a fistful of Sunburst's mane and pulled his face off the ground. With a flick of his curved red horn, he sent Shining to the floor, then dragged him belly up so his face was beneath Sunburst's caged, leaking cock. Another flick and Shining's cage came undone, and his cock sprung up to full mast immediately. Sombra lowered Sunburst's head onto Shining's dick and forcefully had the unicorn he was fucking orally pleasure the other.

He could feel himself getting closer to another orgasm already. He'd noticed himself cumming more frequently lately, but he didn't mind. He was never spent no matter how much he came, there was nothing wrong with making the most out of his sessions with his slaves. Speaking of which, he forced Flash and Thorax at Sunburst's sides, face down and ass up once more.

He looked at their caged cocks, their plugged holes, and their freshly branded bodies. Marking them as his, his property above all else, forever. Sombra threw his head back, and grunting throatily he came again.