Twilight tumbled through the vortex leading to the human world. The first time she’d gone, it had been terrifying. Now, though, it seemed almost routine. As routine as hurtling through an impossibly twisted strand of time and space possibly could be. She landed gracefully on the other side, easily standing on her own two feet. Was she spending too much time on this side? It almost didn’t even feel weird anymore to be standing on only two feet. Or to have feet instead of hooves in the first place. At least she was starting to get comfortable with it, and that was a plus.

Even better, there was already an old friend waiting for her right in front of the portal: Sunset Shimmer!

“Sunset!” Twilight cried out giddily, running to her and wrapping her in a hug.

The first inkling she got that something was very very wrong – Sunset didn’t return the hug. She just stood there.

“Sunset?” Twilight leaned back a little, holding her friend by the shoulders. “Are you alright? What’s wrong?”

“Welcome to Equestrian Hearts! Find your match, make it work, and win!”

Twilight took a step back. “Sunset? What are you talking about? Do you even recognize me?” It was Sunset, alright, exactly as Twilight remembered her. Even her clothes were the same – the same leather jacket, same flame-patterned orange skirt. So what was going on here? Had someone used Equestrian magic to wipe everyone’s memory again? But that still didn’t explain why Sunset was acting so unlike herself.

Sunset smiled in an artificial-looking way. “Which difficulty level would you like to play?” she said. “Easy, medium, or hard?”

“Sunset, snap out of it! What are you talking about?” Twilight waved her hands in front of her friend’s face. Sunset’s eyes did not track her movements.

“Which difficulty level would you like to play? Easy, medium, or hard?”

“Hello! Sunset!” Twilight looked around, kind of hoping to see one of her familiar human-world friends to help her talk some sense into Sunset, or maybe to call off this weird prank, if that’s what it was. Hopefully that’s what it was. But another part of her dreaded to think that her other friends might end up acting just like Sunset Shimmer was now. And anyway, the courtyard in front of the school was completely deserted, and there was no traffic on the road nearby. Was everyone on summer break or something? “Hey! What’s wrong with you?” she shouted, going as far as to poke Sunset right between the eyes.

Sunset rocked slightly, then sprung right back. “Which difficulty level would you like to play? Easy, medium, or hard?”

“Fine, ugh!” Whatever. She’d play along for now, and if this was a prank, she’d laugh right along with everyone else when they finally sprang out from their hiding places. And, well, if it wasn’t a prank, she’d probably be better off if she took a few moments now to dig in and better understand what was going on. Maybe she’d be able to sense some Equestrian magic at play... “Um, medium, I guess.”

“Medium has not been unlocked yet. Complete earlier levels first.” Sunset stared at her blankly, awaiting a response. “Which difficulty level would you like to play? Easy, medium, or hard?”

Twilight threw her hands up. “Fine, easy then!”

With another false smile, Sunset waved her hand. Amidst a shower of golden sparkles, this world’s version of Cadance appeared out of thin air. “This lovely lady is Dean Cadance, from Crystal Prep Academy. She’s one of the most loving girls you’ll ever meet, and she has a real soft spot for romantic gestures. Her likes are romance novels, crystals, and relationship counseling. Her dislikes are infidelity, caves, and insects.”

“Uh, Sunset,” Twilight said, staring at the apparition, “how did you do that? You don’t even have your geode necklace. What kind of Equestrian magic are you using?”

Ignoring her, Sunset waved her hand again. This time, it produced a much bigger shower of sparkles, and from it emerged a huge white horse. No, a unicorn. No ... Shining Armor! He looked nothing like the Shining Armor from Equestria, and even less like the Shining Armor who belonged in this world. His withers stood taller than Twilight’s human shoulder, and he had strange, lanky proportions. Horse proportions, not pony, she realized. Like the horses this world’s Applejack had on her farm. But she would recognize her brother anywhere, in any form. The blue stripes in his mane, the six-pointed star emblazoned on the saddle and barding he was wearing, those eyes of his. It had to be him!

“This handsome man is Shining Armor,” Sunset said, seemingly unaware that he was actually a horse. “The former captain of the Crystal Prep football team. He’s always there for the girl he loves, and he would do anything for her. His likes are football, corn dogs, and rare comic books. His dislikes are crystals, quesadillas, and insects.”

Twilight looked up at him. “Wait, Shining Armor hates quesadillas too?” Did that mean her world’s Shining felt the same way? Was it true at all, or was Sunset just making things up?

“This romance-o-meter measures how seduced Cadance is. Use your dialog options and gifts to get it all the way full.” As Sunset spoke, a glowing red rectangle appeared above Cadance’s head, with only a tiny sliver of green on the left edge of it.

And before Twilight could ask what ‘dialog options’ and ‘gifts’ meant, other boxes appeared floating in the air near Shining Armor, three of them with text in them, another full of empty rectangles.

Okay... Twilight glanced between Sunset, Cadance, and Shining. This was getting weird. “Cadance,” she said, “can you hear me? Do you know who I am?”

Cadance stared blankly, not responding.

But Sunset was still talkative: “Use your dialog options and gifts to get the romance-o-meter all the way full.”

Twilight looked up at the strange horse-like version of her brother, without much hope in her heart. “Shining? Are you in there?” He didn’t respond.

“Use your dialog options and gifts to get the romance-o-meter all the way full.”

Okay, yeah. Twilight shook her head. This was getting quite creepy enough. That strange version of her own brother was really starting to freak her out. She had some idea of what was going on in this world now. Maybe if she went back home, she’d be able to find a way to fix it. She’d at least be able to talk to her friends and ask them for advice ... maybe Princess Celestia, too.

Abruptly she turned and headed back for the portal ... only to smash face-first into solid concrete.

“Exit is not available until you have completed all three levels,” Sunset’s toneless voice said from behind her.

Great, just great. So she was stuck here until she played along? What kind of magic was this, to be able to close the portal completely? Something very dangerous, probably. Should she play along? It didn’t seem like she had a lot of other options. But what had she gotten herself into now?

“Fine,” she said with a sigh, turning back to the boxes around the horse version Shining Armor. Was it really him? Or just an image of him? Or some kind of magical monster? No way to tell. She read the text in the three boxes: Hi, honey, I’ve missed you!, The weather is pretty good today, isn’t it?, Ugh, you again!. “Hmm...” It didn’t take much thought, really. Pretty obvious. “That first one,” Twilight said, pointing at it.

Though she’d expected Sunset to say something about it, apparently, that wasn’t necessary. The moment Twilight pointed at the box, all three boxes disappeared and horse Shining Armor whickered.

And ... apparently, that soft whicker was the only thing he was going to say. Twilight had expected actual words for him, but maybe that’s all his horsey mouth was capable of?

Anyway, Cadance seemed to understand it. “Aw, I missed you too, honey,” she said. The bar above her head changed, the grin sliver growing wider and covering up some of the red. Almost a quarter of the way up already. Coincidentally, she unbuttoned her blue sweater and let it drop to the ground behind her.

“Seriously, that’s it?” Twilight scrunched her face up. “Come on – I’m not the Princess of Love or anything, but even I know that romance isn’t that simple!”

Sunset didn’t seem to have anything to say about that. She just smiled at Twilight. Meanwhile, three new text boxes appeared.

It didn’t take long to figure out which one was the right one. The others were downright offensive or just plain boring. So she pointed at, I really like what you’ve done with your hair. Are you using something new in it? and said, “That one!”

Shining whickered again. The bar above Cadance’s head filled in about halfway. “I’m so glad you noticed!” she said shallowly while pulling her shirt up over her head. “You’re looking great, too.”

It was a bit weird to see Cadance in only a bra like this. It made Twilight blush. Sure, her Cadance almost always walked around naked, or with just a little gold ornamentation around her neck. But Twilight had been to this world enough to know that clothes were considered very important here. A few embarrassing mistakes had quickly taught her that. So she knew exactly how embarrassing it should be for Cadance to stand out here in public quite nearly topless. Except ... were they even in public? No one else was around. But still. It was so strange how Cadance seemed to have eyes only for Shining Armor, like Twilight and Sunset weren’t even there at all.

This time when text boxes appeared, Twilight pointed without hesitation. She was starting to get the hang of this. I always feel so happy when I’m around you.

“Not nearly as happy as I am around you!” Cadance’s skirt came off, leaving her in only a bra and panties. More red disappeared from the bar above her head ... and appeared instead on Twilight’s face. Okay, sure, this wasn’t really her sister-in-law. This was just another world’s copy of her. Maybe even less than that, given all this weird stuff going on. She might only be a magical hallucination. But still. What kind of game was this? And why couldn’t she take her eyes away from the contrast of Cadance’s fancy black lace against pink skin? Was it normal for people in this world to wear things like that underneath their clothes? As much as she had experienced this world, she hadn’t experienced much underwear or any such things. Everyone seemed to keep that very private for some reason. The underwear the portal always provided for Twilight herself wasn’t nearly so elaborate...

Thankfully, a distraction came to take her attention away from it. In addition to three new text boxes, the fourth box finally had something inside it. It looked like a small bouquet of flowers.

“Congratulations,” Sunset said. “You have a gift available.”

Figuring she should learn as much as she could about what was wrong with this world, Twilight pointed at the bouquet.

Instantly, it glittered into existence just above Shining Armor. He caught it in his mouth as it gently fell. For just a moment, he stood there, as if posing with it, and she did have to admit he looked surprisingly good – kind of rakish – holding it like that. Was she starting to get used to this horse form? Honestly, it was less strange to her than these ‘human’ forms. Very pony-like, just bigger and with different proportions. It was giving her funny ideas about how lucky of a mare – no, woman – Cadance was.

Soon, though, Shining gave the bouquet to Cadance, who clutched it against her almost-bare chest. “Oh they’re beautiful, I love love love it!” The bar above her head went completely green, and the bouquet vanished as quickly as it had come into existence. And then, to Twilight’s mortification, Cadance reached around behind herself and unhooked her bra, letting her breasts come free. They were bigger than Twilight’s human-form breasts, Twilight noted with mixed feelings – fuller and more bountiful in every way. And, of course, Cadance leaned down to pull her panties down her legs only a moment later, leaving her completely in the nude.

Twilight fanned herself, but she couldn’t force herself to look away. She’d incidentally seen under Princess Cadance’s tail now and then, of course, and seen nothing but a fairly ordinary-looking pink pony vulva. And she’d thought nothing of it at the time. Nudity wasn’t such a big deal in Equestria. But she’d never actually seen a human woman’s ... parts, aside from her own, of course. Though ... why didn’t Cadance’s have any hair on it? It had struck Twilight as very odd, the first time she’d seen her own human body naked, that for all its lack of fur, her body still had hairs in very particular places. Especially since that was one of the few places ponies don’t have any fur. But here Cadance was, completely hairless down there. Did that mean there was something wrong with Twilight’s body, some bit of pony physiology that didn’t get transferred correctly by the mirror, or was Cadance the weird one? It couldn’t be Cadance. She was so perfect by human standards. Twilight crossed her legs a little under her skirt. Even though she knew she was covered by both the skirt and those weird panties things, she felt like everyone there would somehow know that she was freakishly hairy between her legs.

The good news, though, was that the bar was totally green now. “Okay, the progress bar went all the way. What happens now? Did I win?”

“Victory is indicated by insemination,” Sunset said matter-of-factly.

“By what?” But as soon as she looked, she saw a similar bar above Shining Armor’s head.

Oh no. She could not do that! She couldn’t stand here and watch that. Not with her brother! Little images in boxes started floating around Shining Armor’s body. One had two pairs of lips kissing. One had a picture of lips kissing an eggplant for some reason. Another had a picture of two tennis balls. And a fourth had a picture of an eggplant and a peach. What the hay was all that supposed to mean?

Hardly daring to look – but knowing she probably had to pick something – Twilight pointed at the lips kissing.

The effect was immediate and obvious: Cadance went straight for Shining Armor, her big pink breasts jiggling as she reached up to stroke his cheeks and his mane, and she kissed him right on his horsey lips. It was a strange sight to see, especially since his lips were so much bigger and more dexterous than hers. And despite his horse-like shape, Shining sure seemed to be into it. He even slipped his broad tongue into Cadance’s mouth a little bit.

The bar above his head didn’t move, though. But there was another development, one that made Twilight quickly blush and look away: he’d started to slip out of his sheath, exposing a generous amount of mottled-pink cock.

Despite her insistence on looking away, she couldn’t help herself. She looked back. It was so ... substantial. Even this flaccid, half-grown state, it was probably bigger than the real pony Shining ... not that she was an expert! Just based on comparison to other Equestrian stallions. Though, this horse form of his was a lot bigger than a pony, so of course that was bigger, too. It only made sense. Still ... was Cadance supposed to handle that huge thing somehow?

Shining and Cadance were still making out with each other. His cock grew, but the green sliver in the bar above his head didn’t. Maybe Twilight needed to point at some of the other boxes. Not quite sure what all the different pictures meant, she opted to simply do them in order, so she pointed at the lips kissing an eggplant next.

The mystery of what that eggplant was supposed to represent was quickly resolved. Cadance walked alongside Shining’s body, tracing her fingertips over his sharply defined muscles and shiny white fur. Her hand slipped downward in order to get around the ornamental saddle he was wearing, but instead of going back up once she passed it, she kept going down. Twilight gasped when she saw her sister-in-law – or another dimensional doppelganger of her – kneel down underneath Shining’s belly. Cadance stroked the big horsecock with her hands, bringing the tip of it up to her mouth.

Oh. So that’s what it meant. Twilight didn’t quite see the resemblance between her sort-of-brother’s pink-mottled horsecock and that dark purple eggplant, but whatever. At least Shining seemed to be enjoying it. He whickered in appreciation and stretched his body out to give Cadance better access. His cock hardened and pressed forward against Cadance’s mouth, even squeezing between her lips and going inside slightly, though Twilight could barely tell how it might have been able to fit, given the size difference.

The important thing, though, was that the bar above Shining’s head finally began to change, the green portion growing slightly and the red portion shrinking.

Well, that settled it – this was working! So why not try some more? Twilight pointed at the lips and eggplant again and again in quick succession, ready to get this done quickly. Because the sight of her less equine sister-in-law with her more equine brother’s cock in her mouth was affecting her much more than it should. She wanted to get this game done before she did anything embarrassing ... like soaking through her panties, or losing her self control and diving down there to help Cadance underneath her brother’s belly.

Not that Cadance seemed to need any help. In response to Twilight’s rapid pointing, she plunged her mouth down on Shining’s cock, over and over, just as Twilight had pointed over and over. Every time, she went deeper than before.

Soon, though, to Twilight’s, shock, arousal, and horror, Cadance was roughly shoving herself down on that huge horsecock. She coughed and her naked pink stomach heaved, but she just kept pushing and pushing. Her lips were stretched in a tight ring around his thick base, and she kept shoving herself forward as if trying to kiss his sheath. Her throat bulged obscenely – Twilight could almost see Shining’s veins passing back and forth under the skin of Cadance’s neck – and Cadance sputtered spit out of her nose, but she still kept going!

Sure, Shining’s green bar was going up rapidly, but Twilight was scared that she’d end up getting Cadance hurt or worse. Was that woman even this world’s real Cadance? Would the rules of this game let her get hurt? Twilight wasn’t about to wait and find out the hard way. She quickly pointed to the next box down, the tennis balls. Anything else!

Thankfully, that worked. Cadance pulled herself off of Shining’s cock right away, gasping hoarsely for air. Was that a look of gratitude she shot Twilight’s way, or was Twilight just imagining it?

When Cadance moved on to fondling and licking Shining’s balls, Twilight suddenly realized how obvious the two tennis ball image should have been. Of course. And while she probably should have given Cadance and Shining their privacy ... at this point, she couldn’t help but look. Goddess, this horsey version of Shining had a nice set down there. And seeing Cadance’s small hands and delicate tongue on them only made them look even bigger and juicier than they already were. As strange as it was to see a horse stallion instead of a pony, he looked a lot like a pony stallion down there between his legs, except even bigger. Wow, just to imagine the weight of those things... Twilight’s hands made a subconscious cupping motion as she imagined how those big, smooth balls would feel ... until she noticed what she was doing and forced herself to stop. She had to focus!

Okay, so Shining seemed to like it, especially given the way his spit-slick cock bounced and throbbed under his belly, but it was only making his progress bar go up a little bit. Much slower than it had been when Cadance was sucking his cock. Maybe it was time to try something else?

There was only one more she hadn’t tried yet: the eggplant and peach. Dreading – and heatedly anticipating – what that might mean, she pointed at it.

Leaving Shining’s balls with one last tender kiss, Cadance turned around underneath his belly. She raised from her kneeling position to something more like a track runner about to start a race: with her arms braced against the ground and her butt up in the air. It was a crazy position to see one of these human creatures in, especially a naked one. Twilight couldn’t look away if she tried.

It was an effective position, though. When Shining Armor nudged forward, the tip of his cock nestled perfectly between Cadance’s naked ass cheeks ... and went no further.

Hm... Well, if pointing at the lips and eggplant thing multiple times had made a difference... Yes, that would probably do it. But she would need to be cautious. Just a little at a time. She pointed at it just once more.

Shining nudged forward again. That huge cock of his slipped inside Cadance. The sight of it made Twilight gasp, her breath catching in her throat.

But she didn’t exactly have a very good view from this angle. She was still looking from the front and a little to the side. It gave her a great view of the way Cadance’s face lit up in pleasant shock, but she couldn’t see very much of the real action. And that presented her with a dilemma: would she maintain her pretense of detachment and just playing along, or would she move and get a better view of the nitty-gritty details?

Would Shining and Cadance remember this after she found some way to fix everything? Would they remember her being perverted around them? What if they did? But then again, she so badly wanted to see what was happening back there. Sure, she could just infer from the way Shining’s green bar was progressing, but that wasn’t exactly satisfying, was it? And what if it might be hurting Cadance? Wouldn’t it be more responsible to go back there and look closely, to make sure Cadance’s entrance wasn’t getting stretched out too much?

That internal argument sealed the deal. It was just for Cadance’s safety! Or, at least, if the two of them remembered this somehow and asked her about it, that was an excuse she could use. She really had to do it, just to be safe!

Twilight had been afraid that moving might mean she couldn’t see the boxes or progress bar anymore, but she needn’t have worried. As she moved, all those things rotated and moved around to make sure they stayed perfectly in her view. Shining’s progress bar was going up a little bit, but still pretty slowly, as he was only barely moving inside Cadance, with just his tip in her.

As Twilight got a better angle, though, even that much seemed crazily impressive for Cadance to handle. The smooth shaft near the tip of Shining’s cock – the narrowest point of the whole thing – was wide enough to press against her ass cheeks on either side, spreading them apart and completely filling the gap between them. Cadance’s pink pussy lips were already stretched into a tight ring around his girth. They were so wet, though, and the remaining slickness from her spit seemed to help, too. Shining’s cock seemed to slip in and out easily as he made those slight motions. It only slightly moved Cadance’s pussy lips inward and outward as it moved.

Well, okay ... time to try a little more. Twilight pointed at the symbol again.

Shining pressed deeper, making Cadance moan underneath him. And now when he pulled back and pushed again, it resulted in real thrusts – a few inches of him going in and out of her each time.

Twilight’s mouth watered at the sight of that mottled pink shaft disappearing into Cadance’s pussy, emerging a moment later even slicker and wetter. She could just imagine the amazing fullness Cadance must be feeling each time, not to mention the slick gliding motion of it against her inner walls. Twilight just couldn’t get enough of seeing the two of them move against each other, the slight ways Cadance’s pussy lips stretched and pulled as Shining moved against him. She knew she absolutely shouldn’t be feeling that way about people who were basically her brother and sister-in-law, and it was incredibly voyeuristic, but she just couldn’t stop herself. It was so alluring, so mesmerizing.

Barely even thinking about it, not even needing to look, she pointed to the symbol again.

It was so satisfying seeing her sort-of-brother’s cock ease powerfully and surely into Cadance’s pussy, going even deeper than before. In a way, Twilight almost felt like she was doing it herself. As if she was fucking Cadance with this gigantic cock. Maybe that was just from being in control of it?

It seemed pretty satisfying for Shining, too. His green bar was expanding rapidly now. And Cadance’s moans became constant little squeaks every time Shining pushed as deeply as Twilight was letting him go. She had to be getting stretched to the absolute limits of her human body.

Twilight herself had once performed a few experiments – strictly for scientific purposes – involving her human form and a certain sex toy she’d found in Sunset’s house. Though she’d thought the toy absurdly small at first, she’d quickly learned that the limits of human biology were far more restrictive than pony biology. So while Shining was only giving Cadance less than half of his cock right now, Twilight still had some idea of how impressive even that much was. Cadance was very resilient to be accepting that much of such an enormous cock inside her.

While watching the business end of things occupied the vast majority of Twilight’s attention, for obvious reasons, she did still glance up at the progress bar now and then. It was getting so close to being complete, but it seemed to be stalling out with just the slightest sliver of red left. Why would that be? It had been making such good progress before...

Shining was breathing hard now, his nostrils flaring and his breaths coming in savage-sounding snorts. Veins stood out all over his body, but especially on the base of his cock. Goddess, some of those veins on the side of his shaft must have been bigger around than Twilight’s fingers!

Cadance sure seemed to be feeling the strain, too. She pushed back against him. “More,” she gasped between moans. “More!”

Really? Okay... Though Twilight had no idea how Cadance could handle it, there was no use arguing. She pointed at the eggplant and peach symbol again, barely daring to move her finger ... and yet, maybe it would be just enough to complete the game...

While the other increases had made Shining thrust in and out more deeply, this time, he only pushed in. Virulently, powerfully in. Cadance’s voice broke into a high-pitched squeal as the muscles in Shining’s haunches bunched up, pushing him inward. His medial ring pressed against the outside of her pussy lips, getting nearly half his cock inside her.

And then the progress bar was complete.

Twilight would have known that even without glancing at the rectangle above Shining’s head. She could see his balls clench upward. Her mouth dropped open as she saw the exposed half of his cock pulse, the underside of it throbbing as it pumped what must have been an enormous volume of cum into Cadance’s waiting body.

Very soon, Twilight no longer needed mere speculation to imagine just how much there was. Cadance’s lower belly swelled with it. And when she’d taken as much as she could possibly hold, gooey white splashes of it erupted between her pussy lips and Shining’s shaft. Merely the excess leakage would be more than most pony stallions could hope to produce. Twilight felt new and very inappropriate feelings growing within herself as she saw the very physical evidence of the love her brother – or near enough – felt for Cadance. She had to remind herself that this was not her place. That strange urge to reach out and touch it, to feel its warmth ... she couldn’t allow herself to do any such thing.

When the surges of cum had finally subsided, Shining unceremoniously stepped backward, sliding his cock out of Cadance’s pussy. A thick ribbon of cum trailed out after him as his now-limp cock swung back and away from her, splattering the sidewalk underneath them with even more thick and gooey white blotches.

Also without Twilight’s control, Cadance got out from underneath Shining. Still leaking copious amounts of his cum, she came around in front of him and kissed him on the lips again. She then came forward wrapping her arms around the base of his neck in a warm embrace that he returned by tucking his huge horsey head against the naked, wingless curves of her back.

Twilight watched them, struggling with what felt like far too many feelings at once. The burning need under her own skirt, the heartwarming adoration of seeing those two so deeply in love, the sudden pang of longing and wishing she had someone to embrace her like that, confusion and wondering if she had successfully completed this game or not, the slight lingering feeling of uncanny disgust that still came from seeing Shining Armor’s form so distorted, simple awe in seeing the sheer amount of cum trailing its way down both of Cadance’s inner thighs, the smell of all that cum, a strange an inexplicable attraction toward Cadance’s naked body... It was too much! Too much to handle! All she could wish for in that moment is for it to go away and be over with, and then maybe she could finally think and figure out how she felt about all this.

Oddly enough, she got her wish. Shining and Cadance disappeared as mysteriously as they had appeared in the first place. Cadance’s discarded clothing and Shining’s excess mess disappeared along with them ... though the smell of cum and sex still lingered.

“Congratulations on completing easy mode!” Sunset said, suddenly breaking the still silence she’d fallen into some time ago. “Would you like to try medium mode?”

Twilight stepped over to the portal and pressed her hand against it. She still only felt cold, hard concrete. “Do I have a choice?”

“Congratulations on completing easy mode! Would you like to try medium mode?”

Twilight sighed. It looked like she was in this for the long haul. “Yes. Let’s do medium mode.” She just hoped she could keep control of herself and avoid doing anything ... regrettable before she was finally able to go home and hopefully fix whatever it was that had gone wrong with this world.

Author's Note

This story was suggested and chosen by my SubscribeStar supporters! Every month, I take suggestions from my supporters and they vote to decide which story idea I'll write next.

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