An Interruption

There was only one stage left, the simple act of reprogramming Tempest's mind with the helmet. With the helmet, Umbra would no longer be limited by Tempest's mental defences. Her singular sexuality would be effortlessly changed as the helmet dug into the darkest reaches of the unicorn's mind, breaking through even the strongest mental blocks. Umbra's bare magic was able to influence Tempest's thoughts, but with the helmet, she would be able to change Tempest's brain chemistry.

And why stop there? Umbra would make Tempest her willing pawn within the harem, she would openly serve Spike's cock like the rest of the Princesses and the enemies of Umbra, but deep down Umbra would make the unicorn loyal to Umbra and Umbra alone. She didn't have to limit herself anymore, she could change Tempest from the ground up, into the perfect right hand to accompany Umbra. First though, that sexuality, it was time to make sure that Tempest learned how to love Umbra's dark beauty.

"Tempest, my sweet **** slut, your mind will be changed. Your sexuality is being warped from a prudish straight bitch into a slutty bisexual. As eager to suck cock as you are to eat my dark, glorious pussy." Umbra purred, every word leaving her lips like poisoned honey and all of it filling Tempest's open mind. "You're just aching to suck on a big pair of tits now, Tempest, you crave a mare's touch to fuck. It makes you horny, **** and longing, and you crave to fuck other women, for your pleasure and for the...entertainment of your betters. As much as you crave a big hard cock."

Those last words slipped out of Umbra's mouth before she really dwelled on them, they might have been a mistake. The comparison made so much sense, the perfect image within Umbra's mind of what a true craving was, it simply came naturally but it wasn't what she needed. She needed to make Tempest serve Umbra not Spike, it would have been easier if she was a full lesbian.

But it was too late now, Tempest's mind had sucked in the words and they had settled into her mind. Umbra could change them, but it could risk damage to the unicorn's mind. She was already mumbling out the dark Queen's orders and they had taken root. "Yes, like a big hard cock...Crave cunt like a big, hard cock...like tits and ass like a sexy cock...need sexy women to fuck, tits to suck...want to entertain my betters...such a sexy show...my betters’ hard cocks will be so hard..."

Umbra tsked, it was an inconvenience, nothing more and she still had Tempest exactly where she wanted her. It was time to continue warping the frigid bitch's mind. "You can feel your morals, your loyalty to Twilight falling away can't you. Dripping out of your cunt as quickly as your juices are. You don't need your stupid principles anymore, Tempest. Let them go like the cum dripping out your cunt. You're a treacherous bitch Tempest, willing to betray your friends and anyone for a damn good fuck."

Umbra's savage grin grew wider, her teeth like knives as she watched Tempest absorb her words like a sponge with water. So excited by her triumph, Umbra failed to consider how her words might be used against her. It didn't matter to the dark enchantress, with this, she was wiping away all those useless, restricting principles. Watching Tempest become a **** to her desires, and if Umbra was honest with herself, Tempest wasn't too different from Umbra now.

"Yess..." Tempest moaned, head rolling with a blissful smile on her face. Her body shuddering with an almost rhythmic pace of small orgasms, one after another. Her body was systemically purging her body of all her morals, guilt and principles out through her cum. "Need a damn good fuck...I'd serve the sexiest... the best fuck...morals...useless. Cum it out...cum the guilt out...cum the shame out...cum the morals out... become a sexy treacherous bitch..."

Her body obeyed her mantra, her orgasms were small, but repeated with every word she spoke. It was more efficient and effective than a single big one, much more thorough as Tempest was reprogrammed. Now, was it necessary to have Tempest cum her brains out rather than reprogram her in a more natural manner? Perhaps not, but to the perverted Umbra, it definitely had its own appeal. And hey, wouldn't that make Tempest play the role of the loyal sex **** all the better? That was important after all, she still needed to be able to fool the dragon Master.

Umbra herself was getting restless though. Very restless. Her own nipples were growing painfully stiff, pressing against her armour and starting to be suffocated whilst also aching for sex, for release for pleasure. And the rest of her body was the same, also aching for pleasure, release or perhaps simply stimulation to fuel her ever growing libido. Hands shaking with excitement and anticipation, Umbra unfastened her armour, and let her skin feel the fresh air once more. Even the gentlest breeze sent pleasure through her body like fire, yet without that stimulation, her body was restless. Even the skimpiest and most useless of armours felt constricting, and suffocating. Letting her glorious body free was a thrill, but it was only the start.

Umbra pressed her own glorious body against Tempest's own body, feeling her gigantic tits press against Tempest's sweating muscles. The touch filled the enchantress with sexual pride, the enormous size of her own tits smothering Tempest’s body, it was a mark of dominance for her. She reached her fingers down to Tempest's dripping cunt and pushed deeply into her pussy, sliding in easily through the drenched fold. The warm cum like melted sugar on Umbra's fingers.

Now for the final blow for Tempest’s mind. She was a loyal slut now, but Umbra wanted a treacherously horny slut, one who would revel in betraying Twilight, Celestia and Equestria just like Umbra herself. Such an exciting proposition to Umbra, one fuelled in part by Spike's question ensuring that Umbra's plans would always self-sabotage, that she overlooked the rather obvious way it could backfire, enraptured by the sweet fantasy laying before her. One where Tempest was every bit the wicked temptress Umbra was.

"Now, think of the Royal Guard, all of them selected for their looks as much as their skills. That's good, isn't it? The greatest army should be the greatest sex slaves as well. You're going to help me control them, warp their minds so that they'll be eager slutty slaves in addition to superior soldiers. Make them as eager to fuck their brains out as they are to go to war, make them consider it as noble a duty to spread their legs as it would be to take a sword to the chest for their princess."

It was somewhat unnecessary, Gleaming Shield had already laid so much of the groundwork. And yet it wasn't quite complete, yes, perhaps every guard in Canterlot was spending their patrols fantasising about a good cock, cunt or fuck. And true they, like Umbra, felt a surge of pride in their sinfully slutty outfits, but that was in Canterlot, where they owed their loyalty to Equestria and their Princesses. A few L.U.S.T agents among them, and Gleaming Shield, may recognise their role serving their Master and Mistress, but most saw their sluttiness as simple duty to Equestria and its citizens. They had simply convinced themselves that striding around in impractical heels, with their navels exposed and their armour crafted more to display than conceal their cleavage, was all part of some kind of time honoured tradition. Like Hearth's Warming Eve or Nightmare Night, never anything more insidious.

And beyond that, even Celestia's centuries-long influence had limits. Equestria was much bigger than Canterlot and the Crystal Empire after all, the far off places like Vanhoover and Appleploosa weren't under Celestia's direct hoof. The reforms had not been as accepted so far away from Celestia's influence, they’d have to be dealt with more effectively. Tempest would be instrumental in fulfilling that goal.

So, yes, it was essential that Tempest be willing to corrupt the Royal Guard, whether it was for Umbra or for Spike and her Mistress. She was needed for her Master and Mistress... and for Umbra. That as well... she was getting distracted, she needed to focus...she was getting distracted thinking about her Master and Mistress and how well Tempest could serve him. That wasn't what was going to happen, she needed to make Tempest hers.

Thankfully, Umbra was brought out of her fantasies by Tempest's moaning, her cock drunk smile babbling Umbra's programming with blissful glee. "Yess... I'll betray Equestria, Celestia and Twilight...I'll...I'll use these helmets to fuck their minds...to warp them into walking whores and sluts... as eager to fuck as they'll be to conquer for my dark Master...I'll be ruthless...through and enslave them all!"

"Yes, yes YES!" This was perfect, all was coming together perfectly. But Umbra was caught too much in her excitement, she had overlooked how her programming had sown the very seeds of her downfall, influenced by the Root of Honesty. And it was just at that moment that fate began to turn and the door was thrown open and a very confident Twilight Sparkle stood at the door. Her smile was wide and her eyes sparkled with triumph as she caught the dark enchantress nearly red handed.

[AI Image]

"Umbra, getting ahead of yourself, are we?" Twilight asked, arms coming to fold under her enormous breasts as she closed the distance to the dark enchantress and herself. Every step buoyed with confidence that she had inherited from her two slutty idols, and every step causing the panic within Umbra's stomach to bubble up. "I hope you didn't forget that our Master and Mistress wanted the privilege of warping dear Tempest's Shadow's mind. You wouldn't dare deny them that right, would you? Wouldn't dare deny them the chance to twist her mind to their own designs?"

Umbra **** herself to smile, even as the sweat fell down her face. Twilight hadn't been a princess she had much feared when she had been Sombra, but as Umbra, it became clear how much becoming a devoted **** to Spike and Rarity had led her to develop her powers so many times more than she had been before. How much she had embraced that role and shed herself from any trace of her old half-hearted morality but what truly terrified Umbra was Twilight's loyalty to her Master and her Mistress. If she were to tell them what Umbra had done...

"Of course not, my dear Slutprincess..." Umbra said, using Twilight's true title to flatter the alicorn. "I was simply doing the hard work for our Master and Mistress. That is our purpose is it not? To do the work so that our Master and Mistress can reap all the rewards."

It wasn't hard to sound as if she believed the words she was speaking, since there was always a part of her that wanted to be true. To cast aside her plans to betray her Master and Mistress and become their eager slavecunts, but she couldn't allow herself to. At least not yet, she still had her pride. "Using my helmets can be such a complicated and exhausting procedure, and I wouldn't want to bore them would I?"

It was at this opportune moment Tempest started murmuring again. "Need a Master, a Mistress... need huge fucking tits like a huge fucking cock...need to enslave Equestria...Betray Equestria... rule as a slut tyrant...serve...serve...serve..."

Twilight looked at Tempest with an impressed smile, and Umbra had to avoid gasping out in relief at Tempest's words, so grateful that they hadn't been incriminating. But Twilight's grin did not disappear, nor did her eyes grow any less suspicious, if anything, her grin grew wider as if she knew something Umbra did not. "Well it seems I must commend you on your remarkable initiative. But, it seems that Tempest's programming is finished, isn't it? Shouldn't we release her so our Master and Mistress can reap the rewards?"

Umbra looked back at Tempest with a pained expression. She was somewhat unsure on how to proceed. On the one hand Umbra liked to have more time reprogramming Tempest, corrupting her, making sure her loyalty, corruption and transformation was absolute, not to mention adding in some lovely kinks for Umbra to play with herself. On the other hand Twilight was obviously suspicious and it wouldn't be easy to reprogram her to serve loyally with the Slutprincess looking over Umbra's shoulder.

Umbra couldn't hold back a heavy, pained sigh. "You are correct, of course, my dearest Slutprincess. We should release her now."

She turned to the Slutprincess and made her way to Tempest Shadow, trying to avoid showing any of the thoughts that swirled in her head. Was Tempest's loyalty absolute? Would she betray Umbra to the Master and Mistress? It started to painfully dawn on Umbra how carried away she had gotten. She hadn't made Tempest loyal to her specifically had she? Only to the most arousing figure, the sexiest Mistress, the ultimate Master... would she process that command correctly?

Deep down, Umbra might have known the true answer already. She knew how with every breath she took, Umbra herself fantasized about embracing the role that she had told herself was a lie, so she knew that if it came down to a choice between her sex appeal and the sex appeal of her Master and Mistress, then Tempest would only make one choice.

But Umbra buried that truth deep down, she convinced herself that the intent of her words were clear, that the programming was complete and that when Tempest awoke, she would play the part of a loyal **** to Spike and Rarity, but her true loyalty was to Umbra. At the very least, she knew that Tempest would have no compunctions about betraying her duty to the Royal Guard and conspiring to enslave them into walking wet dreams.

Tentatively, Umbra leaned down, pressing the necessary buttons to release her, giddy with anticipation. She couldn't help herself, some small part of her was vibrating like a schoolfilly, this would be her first conquest, the first sex **** built in her image. Like she was unwrapping a Hearth's Warming present, Umbra's fingers shook as she removed the helmet.

There was a moment of silence, before Tempest opened her eyes, smiling as if she had had the most beautiful dream. Her eyes were almost delirious, and her hands made their way to idly play with her tits as was her new habit. It was a few minutes before she brought herself to her feet, barely caring that she was currently naked, and a few moments more before she remembered she wasn't alone.

"Twilight? U-Umbra?" She asked, with a noticeable shiver in her voice as she addressed Umbra specifically. The dark Queen's smile grew wider upon hearing it, clearly her plan had worked perfectly. "Why are you both here?"

Her eyes were most suspicious of Twilight, not knowing that Twilight wasn't the pure hearted Princess she presented herself as. She simply saw herself as a traitor who had sold out Twilight's faith in her for Umbra's touch and sex, the undercurrent of shame overtook Tempest's face until Twilight started shaking her head with a cat-like grin.

"Well, when I detected you being rewritten by such great magical power I had to come see what was happening.” Twilight said, grinning down at Tempest. It was cute for the Slutprincess seeing Tempest try and deny what was so readily apparent. "I see our Master's **** Umbra has done fantastic work on you."

Tempest's eyes widened. "You-you know?"

"Know about our Master Spike's plan to enslave all women to serve as his harem? Of course, my dear Tempest. I'm one of the leading conspirators, that's why we called Umbra to help. Her helmets will help us enslave the Royal Guard and make them serve our dragon Master, as is their rightful place." Twilight said with a smirk. She was starting to understand why her villains would laugh evilly, there was a dark delight in manipulating the world for their 'evil' plans.

"Is that so?" Tempest said, looking to Umbra for guidance. Her loyalties were divided, but upon receiving Umbra's nod, she knew that she should agree. "Should I perhaps discuss this with our Master?"

Twilight's grin grew wider. "Oh I doubt you'll be just discussing things."

A/N: Thanks again to everyone's suggestions when it comes to Tempest's corruption, I think I have a clear idea of where the arc is going now. I'm looking forward to writing it. Also I'm glad to say I got a few images back recently that will be relevant in the future.

Any suggestions, feedback, and constructive criticism are welcome.

And special thanks to ShadowLDrago for proofreading this chapter.