Author's Notes:

This is the final Patron-submitted chapter for the month of June, and is a prompt suggested by Winter Quill. It's also a blatant F/F clopfic that includes incestuous hate-fucking. Reader Discretion is Advised.

It wasn’t until the sun had long set before Sunburst returned to Twilight’s castle. After he completed his “inspections” with Granny Smith, the stallion did indeed have himself a wonderful meal that he helped prepare alongside the old mare. And since his stomach was hanging down a few inches lower than it did when he left, neither of his friends seemed to question the dopey grin he had on his face. Although, the lucky Crystaller still had an obvious blush when he got back to the castle, since the fur around his muzzle still carried a strong lingering scent of raisins.

“So, do you guys think we should try another Alternate Universe?” asked Twilight while inspecting the floating orb of magic. Even though Sunburst and Starlight didn’t have the best experience in the Surveillance Room earlier that day, it seemed that Discord’s memory-wipe was effective enough to keep both of them blissfully unaware of anything triggering. The draconequus even removed any evidence of Starlight’s physical response to that scene, so the room had absolutely no traces of vomit to alert the three of any wrongdoing. So because of that, Starlight was able to comfortably splay against one of the couch’s armrests while nodding her head.

“Yeah, that sounds cool,” she said with a casual smile as she shrugged. “It’s not everyday you get access to something so unique, so we might as well use it for all it’s worth.”

“I agree!” noted Sunburst as he stood beside Twilight with his horn already lit. However, the stallion made sure to give a cautious glance over towards Twilight to ask, “But ummm… are you okay with this, Princess? I mean, I know you’re offering to try it again, but--”

“It’s alright, Sunburst,” she assured him while stopping his words with a raised hoof. “I know that the last scene we watched was… different, to say the least…” Even with how daintily she tried to word that response so she didn’t sound too unnerved, the recollection of her alternate self looking like that caused her to shudder briefly. But alas, the mare was able to collect herself in less than a second before she added, “But! I’m also a firm believer in the Infinite Universe Theory. So if this spell can really give us access to peering into so many differing dimensions, I really don’t want us to stop because of some… weird coincidence.”

The Alicorn was optimistic, but that last part caused her to struggle not to make another shudder from the possibility. Sunburst nodded his head, and kept himself from showing any visible worry about that same outcome crossing his mind as well. Sadly, Starlight couldn’t seem to resist saying with a snarky smile on her face, “You know what? I’m willing to bet twenty bits the next Alternate Universe scene we find has diapers too.”

“STARLIGHT!” shouted both of the ponies standing beside the orb as they glared back at her. Meanwhile, the mare just shrugged again and raised up her hooves.

“What?” she asked in a tone like her suggestion wasn’t totally inappropriate. “It’s just a friendly wager, that’s all! I even have the bits on me to prove it!” With a quick flash of her magic, Starlight summoned a small bag of bits that fell on top of the coffee table with a heavy thump. “See?”

Twilight face-hoofed with a strong groan under her breath. Meanwhile, Sunburst hummed to himself while playing with his goatee with a hoof, and eventually made a shrug of his own before he said, “You know what?” He then reached into the satchel hanging from his side, and pulled out a similarly-sized bag of bits to place beside hers. “You’re on, Miss Glimmer!”

“No, you two are NOT!” snapped Twilight as she picked up both bags of bits with her magic, and promptly shoved them back against their owners’ chests. “This is supposed to be serious research into friendship! Not some... candid-camera betting contest!”

“Oh, come on!” whined Starlight with a strong eye-roll in disdain. “I think that’s a fairly safe bet to wager on, Twilight!”

Sunburst looked like he wanted to agree with her, but he thankfully noticed enough of Twilight’s annoyed glare to know his muzzle should be kept shut. Because of that, he didn’t try to defend Starlight while the Princess said warningly, “The moment the three of us start using this kind of magic for our own personal gain, or to try and ridicule others, none of our research will mean anything! If we want this experimentation to be seen as successful or valid by any outside sources, we must keep everything documented in a neutral standpoint. We’re not doing these recordings to hurt anypony’s feelings, or to make ourselves feel superior. Is that understood?”

Starlight looked downright offended by Twilight’s last couple of sentences, not wanting to be accused of anything close to those claims. Nevertheless, the unicorn still closed her eyes and sighed before she nodded in understanding, and tried to keep her annoyance from showing as she replied, “Yes, Twilight. I was not intending anything like that, but… I understand why this is important to you, so I won’t make any bets. I promise.”

“Thank you,” Twilight said with a pert nod and appreciative smile. She could see that Starlight looked a little peeved, but paid no heed to it as she turned her attention back towards the magic orb. “Sunburst?” she asked to grab his attention. “You ready to activate the screen this time?”

“Yeah, I’m good,” replied the stallion as he placed his bits back in his satchel, and then gave a quick zap to the magic orb to activate it for the Princess. As he sat himself back down on the couch, Twilight harnessed her own magic aura to re-activate the dimensional changes like they’ve done before. The two unicorns watched the swirling colors within that orb start to change their predetermined paths, and moved about more randomly while the dome was enveloped in Twilight’s lavender aura. By the time a familiar white screen started to form in the middle of that bluish sea of unknown magic, Twilight sighed as she stopped using her horn and sat down between her friends.

“Welp,” said the Alicorn while laying in a more slumped stance on the couch, “let’s hope this universe won’t be as unflattering as the previous two we’ve seen…”

“RRRAAAHHHHH!!! TAKE THAT, YOU INSUFFERABLE BITCH!!!”

Nightmare Moon’s booming voice came out as a near-deafening roar, which rippled across the devastated landscape around her and her foe. The skies almost looked like they were torn apart and badly reassembled, with countless fractures of night and day littering the horizon and giving the space as a whole an unsettling hue. The grass below Nightmare Night’s hooves had been dead and dried-out for who knows how long, but there were also numerous burnt singes from where her enemy’s flaming mane had brushed too closely. Meanwhile, the equally vile and merciless Alicorn underneath Nightmare’s hooves was what captured the three observers’ shocked stares, even with all of the chaotic destruction laid out around them.

“MMNNNGHHH!!~” Daybreaker, the evil alternate of Princess Celestia that Starlight Glimmer envisioned in that one unforgettable nightmare, was looking up at Nightmare Moon with a cockily sinister sneer. Her platinum-plated hooves tried to grip the ground underneath her, but she refrained from showing any resistance as she bellowed up at her former sister, “Do you REALLY think you can match up to ME?! I banished you to the Moon before, AND I’LL GLADLY DO IT AGAIN!!!”

With her hind-legs pulled up and wrapped around Nightmare’s waist, it seemed that the Tyrannical Alicorn was determined to even the score. However, as the two thrashing beasts continued to wrestle one another within their desolate wasteland, it soon became clear that this wasn’t just some brutal sparring between two enemies. Their seething glares and malicious grins may have been as genuine as could be, and the scene as a whole carried enough shocking contrast to leave Twilight and her assistants in stunned silence. But at the same time, the positioning of their writhing bodies didn’t leave much to the imagination, and the brutality of their pounding movements wasn’t enough to conceal what was really going on between them.

Sunburst and Starlight just stared at the alternate dimension with their eyes as wide as frisbees, while Twilight carried an unbelievably strong blush across her cheeks. Her eyes couldn’t even blink as she watched the evil alternates of two of her greatest heroes dueling with so much hatred and disdain in their overzealous spars against each other. Of course, considering how Nightmare Moon and Daybreaker’s “fighting” consisted of the two violently scissoring each other in their ruined world, it would’ve been hard for any pony to keep from gawking at the scene.

“NNNNFFFF!!” Daybreaker’s fanged teeth were tightly gritted while she groaned deeply, like she was struggling not to appear too titillated from her sister’s clit grinding against her own. But from Nightmare Moon’s perspective as she had the Tyrant pinned down, the sounds of her strained grunts was audible enough to make her grin maniacally wide. The dark Princess’ hips thrusted even harder against Daybreaker’s dripping pussy, and their sensitive folds grinded intensely against each other to leave both of their fur standing on end. But despite how tantalizing their incestuous “duel” may have felt for both of them, Daybreaker still narrowed her eyes up at her foe and gave a mockingly coy smirk. “Mnnnghh!!~ Y-You think THAT’S enough to sate ME!?! I’M THE SUPREME RULER OF THESE LANDS, YOU JEALOUS COW!!”

“Aaaahhh!!~ Oh… OH YEAH!?!” roared Nightmare Moon before she used a free hoof to push Daybreaker onto her back. While the flaming Alicorn writhed underneath her sister’s restraints, Nightmare repositioned herself so she was sitting directly atop her rival between their legs. With her full weight bearing down against both of their needy cunts, the dark Alicorn grew an especially wicked-looking sneer before she growled, “Because considering how much you’re leaking like a depraved little WHORE, it seems like YOU’RE the one acting like the cow between us!!”

Before Daybreaker could belt out a nasty retort back at her, her muzzle hung open as she let out a piercing shriek from Nightmare’s first grinding thrust. The fallen Princess seethed in sadistic satisfaction as she pushed her weight down on her sister’s pussy as hard as she could, and elicited those dire shrieks from Daybreaker’s muzzle that made her own nerves tingle so well. But even as their meshing marehoods grew wetter from each enticing movement the two made against each other, Nightmare cackled down at her sister with a mocking jeer. “Nnnnghhh… Look at you, you disgusting little SLUT!! How could ANYONE think of respecting such a vile pig like YOU?!”

Despite how intensely genuine Nightmare’s words may have sounded, Daybreaker’s seething grin was undeterred while she grabbed her sister’s hips with both hooves. “OH, REALLY?!” she roared before pulling Nightmare down even harder, and causing the Alicorn to moan out direly from that added pressure to her sensitive slit. As the younger Tyrant shivered above her sister, and the syrupy juices of her arousal trickled down to Daybreaker’s waist, the flaming beast grinned like a madpony and shouted, “When I’m done with you, I’M GOING TO MAKE YOU THE PUBLIC CUMDUMP OF CANTERLOT!!”

The two corrupted Princess continued to spar as their hips tried to grind against one another in harder successions, clearly trying to get the other one off before they could do the same. But as the two beasts duked it out within their devastated world, the three ponies watching from their own dimension could only gawk without saying a word. Twilight Sparkle seemed especially unnerved by the incestuous hate-sex she was bearing witness to, and her left eye twitched rather violently upon hearing the corrupted Celestia use a term as unbecoming as “Cum-Dump.” Fortunately, even though the Princess’ face showed nothing but pure disgust at seeing her idols acting so horribly towards one another (even if it was in a different world entirely), neither of her friends took notice of how tightly her hind-legs were crossed over.

“NNNGHHHH!!!~ YOU WANT YOUR OWN SISTER THAT BADLY, YOU NASTY CUNT?!?” Nightmare Moon rammed one of her hind-legs down hard against Daybreaker’s chest, effectively stomping her to the burning ground so she could reclaim control of their brutal scissoring. She then gripped one of her sister’s hind-legs with both hooves so she could get proper leverage, and rapidly thrusted against Daybreaker’s crotch to leave her shrieking direly. “THEN LET’S SEE IF YOU CAN HANDLE THIS!!!”

As the Tyrants’ hate-scissoring grew more heated by the second (both figuratively and literally, judging by Daybreaker’s flaming mane enveloping more of the dead grass around them), a sound finally interrupted the awkward silence that was lingering within the Surveillance room. A soft, muffled crunch caused Twilight’s ears to perk up in an instant. Sunburst blinked a couple times before sniffing something new in the air. Starlight caught notice of it too, and finally looked away from the screen to ask, “Do… Do you guys smell pretzels?”

“Normally I don’t eat salty snacks like this so often in a single day,” said Discord, who was sitting on the back of the couch directly behind Twilight’s head. The three ponies all yelped as they jolted away from draconequus, but he didn’t seem the slightest bit distracted while he kept watching the action on screen. In his claw and paw was a plastic bowl of bite-sized pretzels, most likely because of what happened with the popcorn he was indulging in earlier. “But considering the show you three found, I couldn’t resist making something to enjoy while viewing this~”

As he kept munching on his salty snack, Twilight and her assistants all gawked at him like he was absolutely insane. Since Sunburst and Starlight both had their memories wiped of his contributions earlier that day, their stunned reactions to seeing Discord here were just as genuine as Twilight’s was. Even as the sounds of Nightmare Moon and Daybreaker’s venomous shrieks of rapture grew louder with each passing second, the draconequus’ presence was jarring enough to temporarily break the ponies from that shocking scene still unfolding. After a couple seconds of stunned silence, Discord stopped chewing long enough to notice their gawked expressions, and said with a sigh, “Yes, I know about your experiments. And no, I haven’t said a word of it to anypony. I’m simply observing this session to ensure none of you misuse the surveillance spell again.”

The three ponies looked back at each other in confoundment, but none of them could think of anything to say after hearing Discord’s response. Even though they wanted to question just how much Discord was aware of, his near-omnipotent status made the very idea of asking sound unnecessary. Eventually, Twilight and the others kept their sights towards the draconequus as she asked, “So… You’re not involved with this scene?”

“Pbbt~ Oh, heavens no!” he exclaimed with a wave of his claw, almost as if he was offended Twilight would ask such a thing. He pointed back at the screen while the carnage was still going, just as Daybreaker was shown overpowering her sister’s strength to pound her back-first to the charred ground. Meanwhile, Discord said in a matter-of-fact tone, “Fun Fact: Apparently in that universe, the two Princesses actually managed to successfully kill their version of me! Of course, that was mostly due to the two embracing their dark magic, which gave them immense power while claiming their sanity.”

The three ponies looked between Discord and the screen with more uneasy stares, unsure which detail was more unnerving to have learned: that Celestia and Luna could’ve easily succumbed to such a horrifying fate in this world, or that Discord apparently had that kind of knowledge about alternate worlds. Nevertheless, Twilight could only shrug as she settled back in her seat, not seeming too upset about the draconequus’ presence anymore. Meanwhile, Starlight and Sunburst eventually tried to do the same as the Alicorn, despite how raunchy the scene’s hate-fucking was getting through that feed.

“AAAAHHHHHH!!!~” Nightmare Moon’s head reeled back as a massively rapturous moan erupted from her open muzzle, with strings of saliva being seen between her glistening fangs. However, her mouth wasn’t nearly as soaked as Daybreaker’s, who was growling like a rabid beast while her muzzle was buried deep between her sister’s legs. Despite how loudly Nightmare was roaring out in unrelenting pleasure, the sounds of Daybreaker’s sloppily lewd slurps and suckling could be heard clear as day. The sister may have had dauntingly sharp fangs, but Nightmare didn’t seem to take notice of them in the slightest while Daybreaker devoured her throbbing clit like an animal.

“Nnnnnnghhhhh… T… T-TAKE THAT CUNT, YOU NASTY PIG!!~” she screamed furiously before she wrapped her hind-legs around the back of Daybreaker’s head, locking her tightly in place. Despite how dangerous that action could’ve been with Daybreaker’s razor-sharp teeth, the tyrannous Alicorn only growled intensely before she straight-up motorboated Nightmare’s pussy with her draconic tongue. And with each violently abrupt penetration that muscle gave to Nightmare’s gushing and convulsing folds, Nightmare couldn’t help thrusting against her sister’s snout while singing her hooves against her flaming mane. “AAAAHHH!! G-GET IN THERE, YOU SLUT!!”

Twilight winced rather strongly from hearing the Alicorn’s disturbingly foul language; considering how seriously Princess Luna took her regal status and demeanor, she would’ve likely had an aneurysm from hearing her alternate persona speaking so appallingly. Although, Twilight could also hear Discord munching on pretzels right behind her head, which strangely helped distance herself from the content going on in that scene. Eventually, the draconequus stretched his arm out so he could present the bowl down towards the three ponies. “Anyone want some? I bought the pretzels from that convenience store up the road, and I swear I didn’t do anything to them.”

That last statement was probably unneeded, since it only made his offer sound more suspicious. However, Sunburst reluctantly reached his hoof inside of the bowl to take a few, and munched on them while he watched Daybreaker doing the same to her sister. Even though he was rightfully uncomfortable watching what was basically a porno scene alongside a Princess, a foalhood friend, and the literal embodiment of Chaos himself, Sunburst couldn’t really say anything while everyone else remained equally silent. Not to mention, the stallion felt a little exposed when his two friends stared at him curtly, since neither of them ate any of those pretzels.

“Oh, don’t act so prudish, ladies!” scoffed Discord from up above while he rolled his eyes. “At least he’s not masturbating again.”

Sunburst coughed violently with a hoof over his mouth, hacking up a couple of unswallowed and half-chewed pretzels. Starlight covered her face with a hoof in second-hoof embarrassment, and groaned in pity for her friend. Meanwhile, Twilight only needed to shoot a strong, intense glare up at Discord to show how she felt about that jab. Fortunately, the draconequus had enough self-awareness to sigh in defeat, and say with his arms raised, “Alright, alright. I’m sorry for saying that. I’m just saying you should let him eat some pretzels. He’s not hurting anyone.”

Even with how awkward things were getting back in their dimension, the two beasts indulging in each other so spitefully weren’t deterred at all through the other end of the magic screen. Nightmare Moon may have been splayed out on her back, but she seemed rather content with thrusting her sister’s face in tighter against her dripping cunt. Meanwhile, Daybreaker kept chowing down on that gushing pussy as her muzzle got coated with Nightmare’s juices, and even more slathered around her tongue and went down her throat. Daybreaker’s lips tnenatively suckled around Nightmare’s needy clit, which caused her hips to convulse wildly in the beast’s grip. Just as Nightmare’s cries grew needier and more strained with each breath she took, Daybreaker finally pulled her mouth away while it was glistening in her sister’s juices.

“Nnnnghhhh… That’s right, you pathetic little TRAMP!” Daybreaker held her sister tightly with one hoof, while her other hoof vigorously rubbed and teased at Nightmare’s aching clit. While the dark Alicorn was left reeling in pleasure underneath her, Daybreaker was grinning evilly as she brought her sister closer to fruition. “Thaaaaaat’s right… Submit to me like you ALWAYS do, you lousy excuse of a Princess!”

Without warning, Nightmare Moon was finally defeated as her back arched inward, and she belted out a piercing cry with her eyes tightly clenched shut. As her body quivered before Daybreaker’s grip, and her fur stood on end from the undoubtedly legendary titillation she was given, her marehood winked and convulsed like mad just inches from Daybreaker’s face. All the while, the flaming Alicorn growled in victory while her muzzle hung wide open, and her hoof kept grinding against that clit to cause Nightmare Moon to squirt for her. Spurt after spurt of Nightmare’s clear, syrupy juices squirted directly into Daybreaker’s drooling maw, much to the grinning beast’s perverted delight. By the time Nightmare’s forced orgasm finally came to a brutal close, Daybreaker only needed another moment to lick her lips before she closed her full muzzle, and leaned her head back to give a satisfying gulp. “Aaaaaahhhhhh…~”

Twilight really, really didn’t want her blush to give away how conflicting that entire sequence left her, especially with someone like Discord right behind her. Unfortunately, the Princess still shivered with a tightly bitten lip as soon as she say Daybreaker swallowing her sister’s juices. Fortunately, since Starlight and Sunburst were equally as flustered from seeing such an intense scene, neither of them said anything when Twilight pulled herself up from the couch. “Y-You know what?” she blurted rather quickly while making a beeline for the door. “I-I think I need to get some fresh air!”

“What, and miss what happens next?~” jeered Discord as he looked back at her with narrowed eyes and a shit-eating grin. “Daybreaker hasn’t reached orgasm yet! Don’t you wish to witness that?~”

“BYE!!” Twilight shouted before she bolted out of the room, leaving Sunburst and Starlight alone with the draconequus while the scene still continued on screen. When the two ponies looked back, they saw Daybreaker bending over into a presented stance before Nightmare Moon. The darker Alicorn was now wearing a metal muzzle with a matching chain-linked leash, which Daybreaker was holding the other end of tightly.

“Either you get your horn inside of me RIGHT NOW!!” she roared with sadistic authority while Nightmare was seething back at her, “OR I’LL BREAK IT OFF!!”

Nightmare Moon literally charged towards her sister’s cunt horn-first, almost like she was wanting to impale her more than she wanted to pleasure her. Meanwhile, the shocking sight proved to be too much as Sunburst and Starlight exited the room as well, leaving Discord alone to watch the remainder of what had to be a massively long sex scene.

“Hmmm… Is it hypocritical of me to stay here alone after confronting them about that same thing?” After pondering that question with a look of conflict, Discord merely shrugged before eating another pretzel, and settling on the couch to see Daybreaker’s horn-fucking. “Oh, who cares? I’m not the one recording these for ‘science’~”

About four hours later, the monumental duel between those two treacherous foes was finally recorded in its entirety, and added to Discord’s private collection.