What if the Primarchs were Women?

The Glorianna-Class battleship The Vengeful Spirit drifted through the vast expansive void of space, orbiting a vast, red planet. This planet was not the Holy-Forge World of Mars, however, as the vast and expansive industrialization of Sol-4 was completely absent. Instead, this planet was Bodt, a volcanic, ash-soaked Imperial Death World that served as the training grounds and recruitment world of the 12th legion of Astartes – the World Eaters. The Spirit's liege – the Imperial Warmaster Isis Lupercal – was not present on her flagship at the time. She was down below on Bodt's surface, attempting to locate her berserker sister Areia to invite her into the Warmaster's burgeoning alliance.

While Isis was busy traveling from monastery to monastery and arena to arena, her patron – the Daemon Prince of Slaanesh known as Baren – and her sister Aurora Aurelian remained aboard the flagship. The Primarch of the Word Bearers slipped into the Spirit's command deck as quietly as she could. Atop the raised dais amidst this Strategium turned dark temple was an ornate throne that – ostensibly - belonged to the Warmaster. In practice however, well, seeing as Baren was the one currently occupying it made the hierarchy clear. Where Isis sat straight backed and attentive like a High Queen, Baren was slouched and casual, a war chief waiting for his lieutenants reports or his harem girls to entertain him. Aurora was happy to say she could serve as both. That wasn't the only reason she was here, however. While Isis was searching for Areia, Baren was going on the hunt for another of their sisters.

Romilly Guilliman.

Even her name was cause for Aurora's choler to rise and her blood to boil. Guilliman, perfect, faithful Guilliman. Primarch of the Ultramarines, Master of the 500 worlds of Ultramar. Destroyer of Monarchia. Aurora remembered that awful day, being forced to her knees, helplessly watching as Monarchia, her life's work, was reduced to ash and cinders by the Thirteenth Legion. All the while Guilliman was there, standing by their mother's side. Watching her humiliation, mocking her without needing to say anything. Aurora wanted Romilly to suffer like she did. To have everything she holds dear to be ruined in front of her eyes as she watches on helplessly. And there were two ways for her to go about it. One was to destroy Ultramar, Romilly's own personal fiefdom in the Imperium. 500 planets united as beacons of order and civility; an Imperium in miniature. She would see how Guilliman liked being on the other side, forced to watch as Aurora's beloved Word Bearers brought her kingdom to its knees, as everything she had worked for was rendered meaningless. Yes, that would be deeply satisfying.

But it was only one way.

The other way, well, the other way was what she wanted to speak to Baren about.

The Slaaneshi prince raised an eyebrow as Aurora fell to her knees before his throne. She crawled over to him, panther-like, her ass swaying, her breasts rocking back and forth as she did so. Baren smirked; amusement evident on his face. "What do we have here?" he asked, eyes narrowing, curious to see what little game his pet wanted to play.

Auror knelt before him, wrapping her heavy bust around the Daemon's cock. "You are going after Romilly next." It was not a question and they were both aware of it. The Primarch pressed her soft lips to the cockhead, dragging her tongue over the drooling lengths of precum.

Baren let out a groan at that, one hand coming down to gently pet her head. Despite this, he looked seriously down at Aurora. "What of it? Do you wish to come along, perhaps take your legion with you?" Baren wasn't necessarily against the idea of Aurora taking revenge on her sister while he was corrupting her, he simply saw it as unnecessary effort on the Aurelian's part.

Aurora shook her head, thrilling strings of pleasure running up her spine as she worshipped hid cock. "No, I simply have a suggestion." She says, her tongue sliding over the throbbing shaft. "Romilly will be making an address that will be broadcasted across all 500 worlds of Ultramar. It would be a shame if someone disrupted it." The rest didn't need to be said, the implications of Aurora's words spoke plenty on their own. Yes, Aurora could burn Ultramar to the ground and force her sister to kneel in the ashes, but why do that when she could do the inverse? Let all of Ultramar watch as their precious prodigal daughter was reduced to a moaning, sobbing holo-slut wreck.

Her master certainly saw the appeal. Baren gave a shark toothed smile, fangs glistening. "Get a new pet…and send a message to Revelation all in one go." In all honesty, Baren had been looking for an excuse to throw subtlety out the window and with Isis's rebellion in the works, the timing may be right. He was a Slaaneshi, subtlety was a chore at best. "Alright then… let's give the Imperium a show." He gave Aurora's pale ass a hard SMACK, causing it bounce wonderfully. Aurora moaned against his shaft, her breasts sliding up and down the cum and saliva coated cock.

"Then no more talking," Aurora says around a mouthful of precum, before sliding down, working her breasts against Baren's throbbing daemoncock. She stroked his shaft without rhythm or timing, it was a hedonistic, primal and delicious form of worship, causing her master to groan in pleasure, her cum slick breasts surrounding his thick cock as her agile tongue and plump lifts work across his shaft. Aurora's mind surged with pleasure as his cock worked across her face and between her breasts until her back arched and a torrent of femcum went squirting out onto the floor, a powerful orgasm rippling through her, a screeching moan leaving her lips as she shuddered in raw pleasure.

Baren gripped her ass, a groan leaving his lips as his balls clenched. Aurora instantly leaned forward, opening her mouth above his cockhead, just in time for the first torrent of cum to splatter across her face. He coated her in a thick layer of daemoncum, and it kept coming, each jet sending fresh layers of white across her face and into her open mouth.

Cum coated her face and tits, matting her hear and running down her body in thick layers by the time it finished, leaving her a cum coated and moaning mess as she lapped up her treat. Baren left her to it, opening a tear in real-space, one that led from the Spirit's strategium straight to the heart of Ultramar.

-

To the east of the Galactic center was Segmenta Ultima, the largest of the four segementums that composed the newly formed Imperium of Man. Amidst this sea of planets, stars, and black holes, was the legendary Realm of Ultramar. Ultramar was an interstellar fiefdom composed of 500 worlds untied under the stewardship of Primarch Romilly Guilliman and her personal legion of Astartes: the Ultramarines. Ultramar stood as a mirror-image of the greater Imperium, a united empire of human occupied and ruled planets that stood as a symbol of order and the supreme might of humanity. Amidst these 500 planets, one in particular stood out: Macragge, a mountainous civilized world that served as both the center of governance of Ultramar and the home world of the Ultramarines legion.

Amidst the mountain ranges of Macragge, the Ultramarines made their home atop the mightiest peaks within the Hera's Crowns Mountains. Upon these regal peaks stands the Thirteenth Legion's temple-monastery Fort Hera, where prospective Neophytes are augmented and trained in both body and mind to be equal parts soldier and governor. Within the mighty halls of this noble fortress was Romilly herself, pacing alone within her throne room. The Mistress of Ultramar, clad in a simple blue and white toga, buzzed with anticipation as the time for her address drew closer. It was nothing of great import, at least not to the wider galaxy, just a small speech to commend how far the Imperium had come and how Ultramar stood out as a testament to its principles. Not that the citizens of Ultramar would see it that way, any speech made by their beloved consul was seen as a momentous occasion.

Romilly allowed a rare smile to come to her face. Their loyalty was touching and a part of her wished her adoptive father was here to see how far the realm had come. The Empress was someone to admire and Romilly would admit that a part of her preened when even she recognized Ultramar's magnificence, but it wasn't the same as if her father had said it. That smile turned into a slight grimace as across from her, the servitor-operated camera slowly activated, the mutilated half-living corpse of its operator twitching as electricity coursed through its carcass. Romilly personally found the things revolting and privately hoped that one day the Mechanicum would stop using them.

"C-c-connection established. B-be-beginning holo-stream in sixty seconds," the servitor announced, its voice a mournful static-filled stutter. Beside the legless torso was a massive monitor that blaringly displayed a ticking timer in stark white against a black stream.

60…59…58…

She shook her head; it was of no matter. Romilly stood straight back and proud in front of the inert camera. Quickly, she ran a hand over her robes, smoothing out any potential wrinkles before returning her gaze to the camera. With a smile fixed to her face, Romilly took a breath, ready to begin her address,

55…54…5-skrrt

Suddenly, the timer halted. Romilly frowned in confusion as the servitor froze before its skin-less head jerked up on its exposed spine. Its lamp-replaced eyed blaring a foreboding scarlet red. "W-wa-warning: W-w-warp level rising. Tear in real-space i-i-imminent." Romilly stepped away from the servitor in confusion, only to spin around as a screeching, wailing rift in the Materium was torn open within the throne room. From within the screeching tear in reality outstepped a humanoid being with great horns and wings, a smirk plastered on its handsome, inhuman face. Romilly instinctively stepped back, putting space between her and this purple-skinned intruder. The intruder raised its arms above its head, stretching, and to Romilly's chagrin, her eyes momentarily darted down to observe the figure's muscular form as it flexed.

"Mmm…So this is Ultramar, eh?" The figure grinned, his dark eyes glanced about the mighty and cavernous throne room before boring into Romilly's bright blue ones. "I have to admit, it's about what I expected; clean, orderly, boring. No wonder your mother likes it." he said, rolling his eyes. Romilly frowned, who was this strange man and how dare he insult her realm and the Empress? She asked him as much and his smile returned as he gave his answer. "Why, I'm Baren, and I'm your new co-star!"

"R-r-resu-ming c-c-countdown." 53…52…51…

"Co…star?"

The stranger – Baren – grinned toothily, his many sharp fangs glimmering. "Why yes, my dear Romilly. And…if you don't mind, I was thinking we might flip the script a little…"

48…47…46…

Romilly found herself frozen, unable to move as Baren stalked forward, invading her personal space. The Lady of Ultramar shifted uneasily as the Daemon ended up right by her side as she couldn't help but notice that he was a good foot taller than her. Behind her, the timer continued its droning countdown.

37…36…35…

"Speaking of…why don't we get started?" he asked, clapping her on the shoulder and making her chest wobble. His touch left goosebumps on Romilly's skin, and sent a shiver of something running down her spine.

"Umm…started?"

25…24…23…

"Of course! Talking and singing your own praises is fine, but most people watch these things hoping to get a show!" The daemon's hungry grin had Romilly's knees shaking, and the way his eyes lingered over her body did nothing to help.

15…14…13…

Romilly gulped as he pushed further into her personal space, her shivering legs making it difficult to back away as her face came even with his broad chest, the muscle underneath giving her an eyeful while she squirmed. Her heart was beating faster, mouth felling far too dry as Baren's large arms wrapped around her wide hips, only for her to let out a small shriek as she was suddenly seized and hoisted up into the air, limbs scrambling to find any purchase on Baren's towering frame.

12…11…10…

The daemon's grip tightened as her feet are suspended in midair, effectively flipping the Primarch upside down. Romilly's body swung back and forth like a pendulum as the hem of her toga fell down to her breasts. Her legs are exposed, protected only by a pair of bright blue panties.

9…8…7…

Once the bottom half of her chiton covered the top half, Baren lifted Romilly's body up and tightly gripped the Primarch's meaty thighs. He hoists her body up and her crotch is level with his mouth. The daemon leaned forward and bit Romilly's panties with his teeth. The Primarch eeped as Baren pulled his head back, ripping her underwear away in tatters. At the same time, Baren's spade-tipped tail tore through his trousers and Romilly's eyes widened, the breath disappearing from her lungs as her mouth fell open as wordless sounds of disbelief sat on the tip of her tongue. The largest cock she had ever seen jutted up in front of her, barely an inch away from her plush lips.

6…5…4…

Barend drew his hips back and Romilly whimpered as his cockhead scraped along her face before mashing against her tightly clenched lips, its insistent pushing finding no purchase as she clenched her teeth together and refused to let it in. Baren snorted in frustration and Romilly shrieked as he plunged his fork tongue into her sweet dripping cunt, tracing circles around the warm flesh of her walls and drinking up her nectar. The daemon drew his tongue back and glanced down at his 'costar', onyx eyes burning into frightened blue ones. He smirked. "Aurora sends her regards." Romilly's mouth dropped open in shock only to immediately be stuffed full of throbbing daemoncock.

3…2…1…

"C-c-connection establ-bl-blished!"

It was showtime.

-

As soon as Baren made his intentions clear, Aurora Aurelian had returned as fast as she could to her own flagship. She stood here in her own command deck, flanked by her captains and chaplains watching the debasement of Romilly Guilliman with a feverish anticipation. The very second connection was established between the broadcast coming from Macragge and her own vessel, Aurora, her beloved Word Bearers, and most exciting of all, the near-entire population of all 500 worlds of Ultramar was greeted with the sight of Romilly Guilliman, Primarch of the Ultramarines, choking on a Daemon Prince's fat cock while getting her sweet cunny eaten out.

Around her, her beloved daughters tittered and whispered among themselves, baffled and unsure of how to respond to the sight presented to them. The Aurelian had intentionally neglected to tell them of just how Romilly was to pay for her actions on Monarchia, she wanted it to be a surprise. Soon, however, laughter began spreading among their number, an infectious, vindictive sound that reveled in her sister-Primarch's humiliation. Jeers and applause thundered throughout the chamber as her legion celebrated their vengeance. Among them came cries and taunts aimed at the helpless blue slut.

"Fuck her harder!"

"Take that cock, whore!"

"Use her good, lord!"

Aurora watched it all with a vicious smile on her face. Her robes lay spread out around her, doing nothing to hide her curvaceous body or her lewd acts. She openly masturbated at the sight of Romilly's downfall, one hand fingering away at her soaping wet cunt, the other palming a fat tit. The Aurelian bit her lip hard enough to draw blood as Romilly came to a screeching muffled orgasm from Baren's ministrations, her own buxom body shivering and gleaming with sweat. Oh, she could only imagine what was going on in Guilliman's mind right now.

-

"GAGHK! GAGHK! GAGK!" came the wet noises from Romilly's throat as her throat was brutally violated by this daemon stud's massive cock. The Lady of Ultramar was in a panicked mess, choking down on a daemoncock while getting her sweet pussy eagerly eaten out. With his hands digging into her thick thighs, Baren held Romilly confidently in place while his long, forked tongue explored her tender cunny. Romilly wanted to plead, to beg him for mercy. It was wrong. If he didn't stop, she…she would…

"MMMMPPPHHH!" Romilly moaned, her blissful wail muffled by the fat cock taking up her throat. Her pussy squirted shamefully, giving in to Baren and his cruel ministrations. The daemon eagerly lapped away at her delectable nectar, leaving the poor Primarch feebly clinging to him, her arms wrapped around his waist, and her legs around his broad shoulders. Romilly's typical dignified expression was replaced by a messy, sex-dazed look. Her eyes rolled backwards as she was slammed forward to take every inch of the daemon's fat cock. She bucked her hips and tears fell down her face.

Above her, Baren groaned in bliss. "Ohhhhh fuck! Revelation may have made you to be conquerors, but you girls are world-class cocksuckers." With that, he began pumping her throat full of thick streams of hot daemoncum. Huge ropes of jizz that Romilly struggled to swallow, only for Baren to yank his cock from her mouth. A stream of cum poured from her lips and dripped down onto her gasping face, only to land with wet splats on Romilly's massive tits as she was roughly turned right-side up.

Baren's large hands dug into Romily's thighs as the Primarch instinctively threw her arms back around his neck to keep herself from falling forward. Romilly's face was cum-streaked mess, her tongue out and eyes lidded, panting for breath as her big titted, wide hipped body was left lewdly on display. Baren's cruel low voice whispered in her ear. "Mmm…they're already loving it." Romilly gasped as Baren bounced her up, his cockhead digging into her tight pussy. "You're gonna be such a star, Romilly." The Primarch's eyes widened in horror as the truth dawned on her. The massive black monitor in front of her was lit up in a rolling wave of text and her heart sank at the chatting block of text that took its place. Down towards the bottom of the screen her eyes found a dark red symbol that could only be the view count and her blood froze as it was in the billions. All of Ultramar, all 500 worlds were about to watch her get fucked!

Tears well up in Romilly's eyes and she threw one arm in front of her, feebly trying to hide her face from the camera, desperate to spare her realm the shameful sight of her. Baren cruelly chuckled in her ear. "Don't be like that," he hissed, his tongue darting forward to lap at her sweet tears. The daemon slowly drew his hips back… before slamming forward, burying his cock into Romilly's tight cunt. The Primarch instinctively threw her head back and Baren seized her arms, harshly pulling them back and forcing her to thrust her fat tits out, her lewd wide-eyed face exposed to the billions of people watching them as her legs were forced to wrap around Baren's waist lest the only thing keeping her suspended be his thick daemoncock.

"Ha! Ahn! HaaAAaah…!" Romilly wailed as the full extent of what was happening finally registered into her mind. Her tongue spilled forward from her open mouth, and she stared without sight as the camera focused on her fucked-silly expression. Baren showed her no mercy, his hips colliding with hers again and again, roughly bouncing her up and down on his cock, making her thighs and asscheeks wobble, and her mountainous tits bounce, bounce, bounce, in time with his clobbering thrusts. His balls bounded off of her asscheeks, sending ripples through her soft flesh as wild gushes of precum bust from her pussy and onto the floor.

"Sooo biiiiig~" Romilly wailed in the back of her throat, chewing on her lip as she writhed beneath his punishing pumps. Every thrust of his hips had her grunting like a beast and the camera zoomed in on her chest as the force he was delivering to her lower body, reaching all the way up to her tits and making them jump hard enough to smack her saliva and cum coated chin before swinging back down against her stomach.

Baren growled, a deep, rumbling sound that had the whimpering Primarch in his grip shivering. Romilly threw her head back onto the daemon's shoulder, gasping for air as her busty body was cruelly and ruthlessly fucked. The daemon dug his hands into her thick thighs, her sharp nails risking drawing blood and hoisted them up, pinning Romilly's head between her shins. All of Ultramar had a front row seat to Baren's massive cock ruining the Primarch's soaking wet pussy! Her blue eyes were unseeing as she filled her lungs up to the brim before crying out in rapturous agony as the daemon rammed forward and buried his throbbing cock in her pussy, his hips meeting her cheeks in the cacophonous 'SLAP' of two beings coming together while she came so hard she saw stars! A hot stream of femcum squirted from Romilly's pussy, a humiliating admission of the horrible pleasure Baren was inflicting on her poor, curvy body.

Naturally, the daemon didn't stop to give her a break or let her ride out such a violent climax in peace. Instead, he immediately went back to working her body up and down as he sawed himself out of her cunt while she wailed like an alley cat. Every push saw him clapping against her rear as her body shook, her entire curvaceous frame sent jiggling, trapped in place as she sobbed and moaned for the entirety of Ultramar to see. Baren snarled in her ear. "All of them," he hissed. "Your realm, your daughters, your sisters, your self-righteous bitch of a mother are going to watch you get knocked up, Romilly. Give them a hell of a show, slut."

"P-P-Please!" Romilly wailed, though whether she was begging him for mercy or for more, not even she could say at this point. Not that it mattered either way, all she could feel was his cock beating the back of her womb, stirring up her sweet pussy until she felt ready to burst! Her asscheeks jiggling, her tits bouncing, sweat coating every inch of her skin… it was time for the grand finale.

And then – the dam burst. The daemon surged forward, plunging his cock balls-deep in her pretty Primarch pussy, and then exploded a massive het of daemoncum into her womb. Followed by another, another, another… Fear and despair crossed Romilly's face, but the daemon didn't care. He just kissed and lapped away her tears as he dumped a vast load into her. Romilly had no hope of resisting, and no chance of recovering afterwards she was totally wiped out!

Baren held himself inside of her for a long time, until he totally finished breeding the Lady of Ultramar – and only then did he slowly pull out, inch by vein-riddled inch, until a web of cream stretched between his cockhead and her gaping, twitching, pussylips. Romilly whimpered as she was unceremoniously dropped to the floor, barely able to move, her arms still crossed behind her head, staring up at the ceiling. Baren stoked his cock over her, dripping white slime onto her heaving tits. He barely even looked tired from the experience.

"Aaaaaand…" he drawled in his deep, husky voice as the inverted omega symbol of the Ultramarines appeared on his shoulder. "Scene!"

-

Elsewhere

At the center of the vast territories and holdings of the galaxy-spanning empire known as the Imperium of Man, was a small planet that was the third furthest world from its sun, in a system of nine worlds. This small, seemingly innocuous world, once gleamed with vast blue oceans and verdant green landscapes as the only inhabitable planet in its system. Those days are long behind it, however. Its oceans have long evaporated and what little green remains belongs to the gardens of the opulently wealthy and not to what little wilderness remains. The world gleams not with shining oceans, but with the blinding light of a grand golden palace, one so mighty and vast that its spans the length of what at one point had been the largest mountain range and one so opulent and bright that it could be seen on the red sister-world of this once blue sphere.

This world was known as Terra and it was the beating heart of the Imperium of Man. Once called Earth, its only name has long been forgotten by most and remembered by only a select few. Among this number was the master of both this world and the near million of others that bore the two-headed eagle standard of the Imperium of Man. This ancient being, this living god was known and beloved by the citizens of the Imperium as the Empress of Mankind. It was her palace that dominated this ancient, war-scarred world, it was her might that had wrested it from the hands of techno-barbarians and false gods, and it was her will that kept the Imperium alive.

And it would be by her hand that Mankind would become truly independent of the blasted and Ruinous Powers of the Warp. Or at lease, that was the plan. The Webway, the interdimensional hub of tunnels that spiderwebbed throughout the skin of reality, what the Aeldari used to traverse the galaxy faster than the speed of light, was proving to be a trickier beast than the Empress initially thought. The Empress, resplendent in golden armor and basking with psychic might, paced with the turbulent energy of a brewing storm. Within the depths of her palace, she had thinned the barrier between real-space and the Immaterium in her efforts to pierce the Webway.

With a frustrated sigh, the Empress turned to leave, intent on speaking with her trusted advisor, Malcador the Sigillite on the Webway, when a terrible and writhing presence made itself known to her. From beyond the veil that branched between the Materium and the Warp came the incomprembale intellect of Tzeentch, the Changer of Ways, the Architect of Fate, Chaos God of Change, Ambition, Magic, and Mutation. The Empress of Mankind, Anathema to the very nature of Chaos, stared defiantly into the nine upon nine upon nine eyes of the Raven God, unblinking in the face of eternity.

With a hundred thousand gaping mouths, in a hundred thousand voices, in a hundred thousand languages; Tzeentch spoke.

"We have a problem."

The Empress's response was a quick as it was sharp. "I have no business with you."

"Perhaps not," Tzeentch acknowledged. "But this is bigger than you and I, Anathema. You, your daughters, and your Imperium are in grave danger from Slaanesh."

"I have no business with the Child either. Our deal is done."

"A deal you broke!"

The Empress shrugged, unperturbed. "You have broken many deals," she pointed out. "What right do you have to complain when you are the one who is spurned."

The Architect of Fate growled in fleeting. "Listen to me! He has their scent! Already the Dark Prince has set her hound upon the Primarchs! You should have killed him when you had the chance and now, he's ruining everything!"

Spurred and somewhat unnerved by the Raven God's uncharacteristic panic, the Empress asked a single worded question. "Who?"

Tzeentch did not respond with words. Instead, the Empress braced herself under a shield of psychic fortitude as her mind was assailed with images and sounds. It was a message, a warning, not of words, but of concepts. Lust, hunger, spite, avarice. A familiar toothy grin, a half-remembered touch that stirred her loins and sent shivers down her spine. She saw her daughters, blissed out and cum coated at the foot of a twisting, malevolent presence, a demigod of lust and hunger that stood in the shadow of the Goddess of Perfection and Excess. She saw with eyes widened in horror and lust, her daughter Romilly Guilliman. The Lady of Ultramar writhing and moaning in the arms of a daemon prince, pierced on his mighty cock for the entirety of the galaxy to witness. She zeroed in on the daemon's face and almost fell back in shock at the sight of that familiar, toothy grin.

The Empress of Mankind – Revelation – nearly fell to one knee as the Warp-touched wave of information slowly came to an end. Sweat stained her forehead and a luminescent blush had her face glowing red as she remembered. Every grin he gave her, every teasing word he hissed in her ear, and lingering touch that sent her body into a ravenous fever.

For the first time in many millennia, Revelation felt panic as that horrible, addictive name came to her plush lips again.

"Baren."