The Canterlot Files

Chapter-specific sex warning: This chapter features a human/animal hybrid not unlike a traditional werewolf. Like that monster, the hybrid form is physically midway between human and animal, and behaves more like an animal. Obviously it has sex with someone, because I wrote this story. The person consents; it is up to you if you think the creature is capable of it, but if it is, it does. Be warned in any case.

Sonata's nap seemed to have revitalized her. She rode, as always, with her arms tight around Sunset to stay on the motorcycle, and even through their clothes the contact let her emotions waft over Sunset. Partway home her deep affection became tinged with warm arousal. By the time they stopped and parked the bike, it was keen and hungry, and Sunset found herself echoing it.

Before they even got into the house, Sonata stopped abruptly, causing Sunset to bounce off her pleasantly yielding rear, then turned and kissed her lips. The closer contact brought the link, lost when they got off the bike, back with even greater force, and Sunset's cock sprang out at Sonata's desire for her.

"This is great," Sonata whispered to her, "I don't even have to say anything to let you know how much I want you." Wiggling her ass far more than necessary, she sauntered into the house.

Sunset, in turn, didn't even let her get to the bed. As Sonata kicked her shoes off, Sunset grabbed her from behind to a delighted eek, and bore her down on the sofa. Sonata fell giggling, her ass hugged flatteringly by one of her new Rarity-label skirts. Confident her lover appreciated her haste, Sunset didn't bother removing much. She lifted her own skirt and yanked off her panties, then pressed Sonata's up as little as necessary to reveal the Siren's traditional thong. She pressed it heedlessly aside and buried herself to the hilt.

"Oooooh," Sonata let out a little sigh. Then, "oh! You feel different!" She wiggled her hips for emphasis, something Sunset very much appreciated.

Sunset thought a minute, puzzled, and withdrew a little, looking down at herself. Her shaft did look a bit different. It was only when she pulled it far enough out to notice her lack of medial ring that she remembered.

"Oh yeah," she said, "Arwen told me I could do something I didn't know I could." She concentrated, and Sonata's passage felt a little tighter as her larger equine cock returned. Sonata moaned, then giggled, and a fresh wave of heat washed over Sunset's mind.

"Oh wow," she breathed, "that felt neat. But I like this one better. The flare is just too much fun!"

After that, they didn't have much more use for words. Sunset drove herself back into Sonata, and while she couldn't feel exactly what her lover did, she saw her delicious ass, skirt driven up fully off it by their fervor, quiver with the impact. She felt the deep full satisfaction wash off of her. It was intoxicating. She pulled out and drove in again and again, and each time she felt Sonata's joy at their coupling. Her flare deployed, and she felt Sonata's orgasm like waves of sunlight. She broke like she had in Arwen, pumping steadily, emptying her balls in one massive orgasm. She felt Sonata's drunken joy as her belly swelled even as she came, and the siren had to reach down and unbutton her blouse to let it free. Her dick faded, and she fell on Sonata. The siren twisted below her until Sunset was balanced on her swollen belly, and kissed her.

Then Sunset felt something she'd also felt from Arwen: Sonata's mind, reaching out to hers. Though it was not the great ocean the elf Queen's had been, it felt familiar and welcome, and she thought of herself embracing her lover with her mind, as well as her arms.

"Oh," Sonata broke the kiss, "you gave me enough magic to get my empathy back. Do you mind?"

Sunset laughed. "I'd be silly if I did. Besides, I let you in."

"You could tell? That's not how it usually is."

Sunset shrugged.

, she said.

Sonata was looking up at her, confused.

"What did you say?"

"I said the gifts of the elves are mysterious."

"Not in English you didn't."

Sunset shook her head. "Uh, sorry."

Sonata laughed. "At least when I get magic, I get it back. You just seem to keep getting new weird stuff." She stretched like a cat, pressing herself up into Sunset even closer. Sunset felt her satisfied fullness, her affection. She held her close.

"This is gonna hurt my back," Sonata said, though Sunset felt the tenderness she didn't put in her words, "let's go to bed."

They shed their clothes as they rose, scattering them on the couch for later. Sonata kept Sunset's hand in hers as she led her back towards the bedroom, again wiggling her wonderful, newly exposed, rear. Sunset couldn't help but notice it, and felt the beginnings of desire stirring again.

"Oh good," Sonata said, and Sunset felt it returned.

The arousal seemed to bounce back and forth between them, growing each time it did, until Sunset wasn't sure how much of what she was feeling was her, and how much was Sonata, but her cock didn't seem to care, and was once again ready for action.

"Oh hey," Sonata said, wrapping her hand around it. Then, "oh! You should turn it back! I bet that weird tip on the human one will make it slide into my ass real easy if you get it wet in my pussy first."

Sunset concentrated, changing it, but before she could say anything, they'd reached the bed, and Sonata fell face-first onto it. The impact on her swollen belly caused a generous dollop of cum to ooze to her entrance, looking ready to spill out.

"No you don't," Sunset said, "nothing's getting out of you today," and she pressed it back inside with her cock.

Both lovers gasped as the mental connection returned, each feeling double the pounding hot arousal. It was all Sunset could do not to fuck Sonata's pussy then and there; only the knowledge that her womb was so full she'd have to cum on her, and her intense desire to also leave her second load completely in Sonata's body, made her withdraw. Her cock glistened with their juices. She pressed it against Sonata's tight pucker, and her lover raised her ass to meet her, spreading her cheeks. Sunset's tip sunk in, easily, as Sonata predicted. The shared feeling was too much, and her knees wavered, sinking her to the hilt before she recovered. Sonata gasped, and a feeling Sunset couldn't identify overcame her.

"What's up?" Sunset asked.

"I just realized," Sonata said, "you wanted me so much on the couch, you didn't take a potion. If I'm in season, we'll have more eggs."

It was too much for both of them. Sunset wasn't able to talk, but instead began spurting in Sonata's ass. Her lover quaked and pressed and clenched against her, and she felt Sonata's orgasm grow and break, and then it was inside her too, and her dripping pussy, unused though it was, was cumming too, along with her dick, and the sensation was too much, too much.

As Sunset finished unloading herself and her cock vanished, she fell, utterly spent, into Sonata's arms, and they passed out, entwined.

Sunset woke what felt like not much later. Though she'd not seen the time when they got to bed, the clock read 2:12, and the room was dark. Sonata slumbered peacefully in her arms, still bloated with her seed, and Sunset smiled, but somehow she felt wide awake. Carefully she freed herself and went downstairs to get a drink. When she got to the fridge, though, she found herself craving mead, something she'd never tasted before and that they certainly didn't have in the house. She stood for a moment in confusion, looking around the kitchen, before she glanced out the window, then stood enraptured.

What she was seeing was, of course, just their small back yard by night, but it looked utterly transformed, nonetheless. The starlight, which she'd thought of as dim, looked at that moment utterly perfect, revealing the low shrubs and trees in light as revealing as the day, but far more beautiful. With as little conscious control as if it were a dream, she walked on to the back step, not caring a bit for her nakedness.

The starlight washed over her. The night breeze played in her hair and on her naked skin. She felt like a pony again - completely aware of her nudity, but neither aroused nor ashamed, just aware of the play of air and light across her whole body. Images sprang to her mind of more nights than she'd ever seen, of fields under strange stars, of the songs that rose to the light-strewn heavens in times that never were. She found her own voice rising.

, she sang, not understanding the words. She was crying. She sang more, verse after verse. She knew none of the words, and remembered none save for an instant after they left her lips, but she felt them, and they wove in her mind an image of a lady's face spread across the stars, vast and wise. She felt that this lady knew her, perfectly, and loved her all the same.

The song faded. For a moment, far away (even though the backyard ended in a fence not twenty feet from her), she saw a pale woman in a dark robe, and thought it was the Queen. She cried out and ran towards her, but the figure was gone.

She felt herself wake up, tried to open her eyes, but they were open, and she was in her back yard, grass twined in her feet, and it was dark, so dark she couldn't see the fence, and the porch light wasn't on, and she was very naked.

She stumbled back into the house. She remembered everything except the words of the song. She thought she should go back to bed, but she was wide awake. She got a glass of water and sat on the sofa to think, but she couldn't pin anything down. She thought about the song and felt a vast part of her mind around it she couldn't quite grasp. She thought this should terrify her, but it didn't. She sipped her water. She thought things, she was sure, for hours, but they failed to come into her memory or even perhaps her conscious mind. Eventually the sun rose. Finally Sonata came out, confused, and asked if she was okay. She didn't know quite what to say, but she was okay - she was herself, and she was more awake than she ever was when their alarm went off.

So she told Sonata what had happened.

"You weren't kidding about the elves," Sonata said.

Sunset laughed, and they showered, and got ready for work.

Sunset and Redheart spent the first half of the day writing up a file for Sunset's adventure in the Everfree. Though there we some minor issues to settle - chief among them whether to name the file for Arwen when she'd apparently vanished forever - they managed to complete it by lunch time. Sunset wasn't entirely pleased with her account. For one, she couldn't get it not to sound weird and mystical, even though unlike her experience the night before, the whole thing had felt concrete at the time. For another, she was slightly irked that her first official action hadn't involved solving a problem through intelligence, friendship, or even gunplay, but rather by having sex with someone, which didn't seem very heroic. Finally, she was irked by the lack of hard evidence to back up her account. Outside the newest addition to her stable of weird powers, the only surviving items were Arwen's robe and the green jewel. While both were undoubtedly unusual, neither was really a smoking gun. She planned to have Twilight investigate the robe in her lab, though she wasn't sure she wanted to part with the jewel.

"There's an idea," Redheart said when the subject of Twilight came up, "we should see if she's able to make us any magic-detecting equipment we can install here. She's got to be starting college soon, and probably won't have time to help us out once she does."

Sunset nodded. She'd been avoiding thinking about her friends starting college, but it was less than a month away now. Though none of them were going too far away for a weekend visit, only Pinkie, Applejack, and Rarity were staying in the city proper - the latter two for the sake of their businesses, the former for her own incomprehensible reasons. Though Sunset had known the whole time that human high school friends rarely stuck together after graduation, she still hoped they'd prove the exception, and that the distance wouldn't make them grow emotionally too far apart.

Once they finished the file, they encountered the first unexpected hurdle in their project: it wasn't quite clear what they should do. While Redheart was confident that once they'd been going a little longer they'd have mountains of the federal government's legendary paperwork to do, as of yet there wasn't even any of that: their regular reports were monthly, so filing expense reports or the like wouldn't make any sense for at least another week or two.

Just when they'd nearly resolved to go to the library and start looking over local news stories - a project both felt was barely better than browsing social media on their desk computers and waiting for someone with a supernatural problem to walk in the door - they heard a familiar voice coming through the open door from the reception area.

"Howdy Sonata," the drawl identified Applejack clearly even if her voice hadn't, "Sunset said I should come on down here if I ever had a supernatural problem."

"Do you?" Sunset emerged just as Sonata was getting ready to pick up her phone to call her office.

"Well, I don't rightly know," Applejack said, "but something fishy's been going on out in my neck of the woods."

They went to the conference room, where Redheart joined them.

"Okay," Sunset said, "so what's up?"

"Well," Applejack said, "I don't rightly know if this one's really for you or not. But it's like this. We mostly do apples and dairy at Sweet Apple Acres, but we've got a few farm horses too, and lots of folks around us are ranchers more than farmers. Anyhow, horse breeding season's spring and summer, but this one's been right strange, 'least out near us. First of all, most of the mares came into season late. Almost none of 'em were ready in the spring, and most're only coming into season now. But the odd thing's this: something's getting in and covering them in secret."

"A...horse rapist?" Redheart said. "I can see how that'd be a problem for animal husbandry, but it doesn't exactly seem like our department."

"Lemme finish," Applejack went on. "First, it ain't rape, the mares get covered, just like a stallion did it. Even the horse doctors can't tell the difference. And it happens at night, no sign of anyone forcing their way in."

"So the idea is like, a horny stallion that can walk through walls?"

"Got me," Applejack said, "I'm just reporting it."

"Why don't you think it's a human? Horse breeding's big business," Redheart asked. "Ruin a competitor's chance at a prize foal, you do some damage."

"Of course I ain't sure it ain't," Applejack shrugged. "But if you can get at the rival's stables, you can do a lot more mischief than getting a mare with a bad foal. 'Sides, it's not been what you call careful. I'd never have come to you if I'd heard about one or two cases, folks tell tall tales all the time. But near as I can tell every mare's gone into heat in the last month's been hit, not just the breeding stock. Farm horses, hay, there's even a leisure stable's been hit. Two dozen or so mares all told, within a few miles of the Acres. And it ain't no human pervert either, they're pregnant."

Redheart nodded.

"Okay, I see where you're coming from. That does seem like a lot of extra risk if you're just trying to sabotage a rival."

Applejack shrugged. "Y'all are the experts, your call if it's worth your time. But I was in town for the farmer's market and thought I'd let you know. We've got some guest room at the Acres if you wanna check it out."

"Give us a minute to talk it over," Redheart said, "if you don't mind."

"Take your time, but I gotta get back and help Mac pack up the stall. Sunset's got my number, just give a call if you're coming."

They nodded, and she took her leave.

"What do you think?" Redheart said.

"I was mostly wondering why we keep getting cases about weird sex," Sunset sighed. "Also, I have to admit I still find terrestrial horses kind of creepy. But it does sound mildly weird."

"I dunno," Redheart said. "It's not a lot to go on."

Sunset raised an eyebrow. "You think it's less than 'maybe there's some vague report of creepy shit in the local newspaper archives'?"

"Point taken."

"Also, even if we're wasting our time, at least we'll get some good food out of it. Applejack refuses to have guests for dinner without making something up special, and she's a dynamite cook."

Redheart chuckled. "I was going to microwave leftovers tonight, so sold."

"Want to come, Sonata?" Redheart asked on the way out. "From what Applejack said, there are lots of possible targets out her way, and we might be able to use more eyes for a stakeout."

Sonata looked more conflicted than Sunset expected, and she made a mental note to ask her about it later. But it lasted only a moment before her cheerful smile was back, and she nodded.

"Okay," Redheart said, "but none of us are really dressed for a stakeout or a farm. Especially you, Sonata. Let's go change. I'll meet you two at your place in an hour. Let Applejack know we're coming, Sunset?"

Between getting changed and the distance between the city and the farm, it was nearing dinnertime when Redheart drove Prospero down the dirt road towards the Sweet Apple Acres farmhouse. She'd done her best, but her large wings were nearly impossible to work with, and all she'd been able to do was swap over to jeans and a tank top, covered with a hat and coat that were at least more rancher than private eye, though both seemed more appropriate for a southwestern ranch than Canterlot's temperate hills. She figured she could pass as eccentric, or poorly undercover if she revealed her badge, to other farmers if need be, but she'd probably have to reveal her secret to Applejack, since wearing coat and hat at the dinner table would be bizarre.

Sunset had just swapped to jeans and boots, while Sonata was surprisingly conservative in jean shorts and not-too-tight tee. Redheart envied her partner and assistant their more subtle weirdnesses.

She turned Prospero around the bend and the farmhouse came into view - along with another sight that made her jaw drop. A man was carrying several large baskets of summer squash in from the fields. The man was also large, and shirtless. His skin was light red, his hair a vibrant orange. All his exposed flesh bulged. Still, he didn't seem to be struggling with the baskets much - his skin was covered only in a light sweat, likely more from the sun, than the labor, in her medical opinion. Her non-medical opinion tried not to stare, or drool.

Sunset laughed. "I didn't realize you were into the strong silent types."

Redheart blushed. "I thought you had to be touching me to use that new magic."

"I didn't need to, I'm surprised you weren't drooling."

Redheart punched her, but her heart wasn't in it.

"Is that Applejack's beau?"

"You're in luck," Sunset laughed again, "she's gay. Or maybe just Rainbow-sexual. That's her brother, Macintosh. I'm sure you can see why they used to call him 'Big Mac'. I'm surprised you don't know him from the school. Or, right, he graduated the year before you got there."

"He looks older than that," Redheart mused.

"He is, you won't be robbing the cradle too much. He had to miss a few years of school when their parents died, getting the farm in order. I think he's closer to your age than he is to Applejack's."

"Besides," Sonata said, "Sunset's centuries younger than I am. And Arwen probably had thousands of years on her!"

"Don't get ahead of yourselves, girls," Redheart rolled her eyes. "I was just looking."

As they got close, Macintosh turned and climbed the stairs to the porch. His back rippled. His jeans did completely unreasonable things to his ass. Redheart continued just looking. He dropped off one of the baskets on the porch and brought the other inside with him before they'd parked the car and gotten out.

By the time they did and went into the farmhouse, he'd put on a flannel shirt. Though it was of course the polite thing to do, Redheart wouldn't have minded rudeness. His light sweat made it cling to him slightly, though, which had its own appeal. Applejack introduced everyone, and Mac excused himself to freshen up before dinner. Redheart took her aside.

"I don't want to wear my hat and coat for dinner," she said, "but, well, did Sunset tell you about my little incident?"

"The wings and such? Yep."

"Does Mac know?"

"Nope. But he knows most of the rest, I just didn't tell him that bit, since he'd never met you and all. He won't make a fuss if you take 'em off."

Redheart nodded, still reluctant, but took off her coat and hat and hung them. Macintosh paused for a bit after he got back, then went about his business, face unchanged.

"Ms. Redheart had a bit of a mishap, Mac," Applejack said, "I told you she works with Sunset."

Mac paused then, and, apparently deciding it was no longer rude to stare, looked Redheart up and down thoughtfully.

"They suit you, Ms. Redheart," he said, then went into the kitchen, leaving Redheart blushing. She managed to stammer out a thanks at least ten seconds into the 'awkwardly late' stage, though he was kind enough not to bring it up.

The dinner was as delicious as Sunset had promised, and Redheart found it easy to say little other than appreciative words, since she was busy enjoying it otherwise. Mac likewise said little except the "pass"es and "please"es. Sunset and Applejack, old friends, and Sonata, willing to chatter at anyone, filled the empty air well enough, and Redheart found their idle chatter pleasant. Once or twice she thought Mac stared at her out of the corner of an eye, but of course, with her freakish magical additions, it was easy to see why.

After the meal, he excused himself again for chores, leaving the girls to talk strategy.

It turned out they had good numbers - three farms around the area had mares in heat: Caramel's farm had a riding horse, Dr. Hooves' clinic next door to Caramel's contained several that were recovered, but hadn't yet been picked up by their owners, and Applejack's own riding horse had just gone into season.

"All right," Sunset said. "I propose Sonata and I go and stake out Caramel's and the Doctor's. Applejack can come along to introduce us. Redheart, I think you should watch Sweet Apple Acres."

"Why?" Redheart couldn't deny she'd be happy to stake out wherever Mac might wander into the line of sight, but she hoped that wasn't Sunset's reasoning.

"Well, Sonata should be one of the two that goes further afield, because she's not really a trained agent. Sure, we both know she can handle herself, but those two locations are close enough we can back her up if she needs one of us to flash a badge. I'm the better choice there, because her empathy's coming back, and I'm more attuned to her, and have my own, so if something goes wrong, I might feel it. Finally, everyone on this farm knows your secret, so you won't need to worry about wearing the coat and hat, or about them falling off if you do."

Redheart was impressed. "Okay, those are good points. Sold."

"All right then," Applejack said, "I'll go get my things. Redheart, I'll show you to the barn on our way out."

"You're welcome," Sunset said, and winked at her, as soon as Applejack was out of earshot. "Just remember, you're watching the mare, not the stud."

Redheart sighed.

Applejack showed her in, and she ended up hiding in the hay loft. It was a warm night, so she'd left her coat and hat in the farmhouse. She'd wriggled under the loose hay in the loft, concealing herself as best she could. Her wings proved surprisingly useful, letting her scoop hay around to cover herself once she'd found a good vantage point, lying face-down on the edge of the loft, with an excellent view to both the barn door, and the mare's stall.

For a long time, nothing happened. The hay was itchy, and her exposed wings didn't help, but at least the slight irritation made it unlikely she would fall asleep as the night wore on. Just as she began to feel how interminable the waiting was, the door creaked and opened.

Instantly her eyes snapped to it, trying to focus in the dark, but then the lights snapped on. It was just Mac. He was quiet as ever, but began doing the rounds of the stalls, feeding the animals and occasionally cleaning out some spoiled hay. Redheart thought about announcing herself, but they'd not told Mac about their purpose in being here, and while she didn't want to think he might be responsible, she had no actual evidence he wasn't. Besides, it remained a joy to watch him work. He'd rolled up his sleeves, and his arms alone were a wonderful example of anatomy.

By the time he finished, she was definitely well into the turned-on stage, and she hoped she'd be able to calm down enough to focus again on the stakeout. He didn't leave immediately as she'd expected, though. Instead he looked around in what seemed like a distinctly suspicious manner. Redheart forced herself to focus again. Shit, she thought, I really hope it's not him... After seemingly satisfying himself that no one was around, he turned off the overhead lights. It took Redheart's eyes a moment to readjust, but the moon was full and bright, and the light streaming in the barn windows made it reasonably easy to see things in the barn's main spaces, if not the stalls.

Mac still hadn't left. Instead he moved a stool over to the entrance area, in easy view of Redheart's perch, but not within line of sight of any of the stalls. He brought an empty bucket over and placed it next to the stool, to Redheart's confusion. Then her eyes widened as he slid off his jeans and dropped them to the floor, along with his boxers. The moonlight didn't give her as good a view as her rapidly moistening slit wished it did, but she could tell he was both aroused and generously endowed.

What the hell, she thought I hope he doesn't have some sort of cross-fertility spell or some shit too. But instead Mac sat on the stool, and began gently stroking his own hard cock, and she realized he'd just stolen off for some alone time, upon which she was now spying.

Some part of her told her she should let him know she was there. But she felt it had gone too far already, and now would be more awkward to tell him than to simply never do so. And there was still a chance this was somehow related to her investigation. She almost believed that.

She couldn't deny, though, that the way his arm moved in the moonlight as he touched himself, the sight of his ready cock, and even more so the sight of his hand caressing it, was driving her wild. She couldn't resist. She reached down, unbuttoned her jeans, and reached her hand inside her panties to stroke her already sopping pussy. She had to stifle her moan. Mac didn't bother. He was still going slowly, apparently intent on taking his time, but he was grunting and moaning already. He spat, the saliva falling to land on his hand and cock, making the indistinct but deliciously implied shape glisten in the moonlight.

Redheart's legs twitched involuntarily as her pleasure grew. She slid off her boots, not quite silently, but Mac's growing sounds of pleasure hid them. She kicked off her jeans, leaving her in panties and her tank top. She inserted two fingers into herself, imagining they were his.

Below her, Mac spat again, and upped the tempo of his strokes.

"Mmmm, Ms. Redheart," he moaned.

If she'd been less paranoid about the investigation, or felt less guilty about spying on him, she'd likely have realized immediately he was fantasizing about her, and cum, hard. Instead, for just a split second before her brain processed the context and tone, she was convinced he'd noticed her. It was a split second too long. In shock and shame she twitched, rising up on her hands and knees and pulling her hand guiltily free of her panties. The sudden movement overbalanced her, and she toppled forward out of the hay loft.

Instinctively she spread her wings. Everything seemed to slow. She felt the still air catch in them, felt herself wobbling but not falling. Mac turned to the source of the noise, equally guilty, pulling up his pants lightning-quick to hide his wonderful cock. It seemed he couldn't see her well in the dark, or was confused by her silhouette, because he didn't move immediately towards her or cry out, but looked up in confusion.

Ahead of her, one of the support beams loomed. She wasn't falling quickly, but her clumsy glide was swift enough she knew hitting it would not be pleasant. She angled her wings, trying to turn, but she had no idea what she was doing. She tilted the bottom one too far, and felt herself tip. Her wings no longer filled with air, and again on instinct she drew them tight around herself as she began to fall.

She landed hard on a hay bale, which was nowhere near as yielding as television had led her to believe. There wasn't much pain, but the air was knocked out of her. As she was gathering herself, she felt Mac's thick, wonderful arms picking her up, apparently effortlessly. She tried to reassure him, but her breath was still too short.

"Ms. Redheart, are you okay?"

He hurried toward the barn door as she gathered herself to try to respond. The feeling of being in his arms, not significantly blocked from touching her own flesh by the tank top and panties, was not helping her gather herself. Just as she was about to manage her reply, he wandered into one of the shafts of strong moonlight.

"I'm alr-" she began, then cut off in confusion.

Mac's already mighty arms felt like they were growing larger against her naked flesh. She gasped, and felt herself lifted even higher, though he didn't seem to move. She looked back, and his clothes were bulging as he very obviously grew. His mouth was open in a silent howl. She felt a tickling where his bare arms touched her, and she looked down to find them sprouting thick red hair. No, it was fur. His upper arms were already covered.

There was a tearing noise, and she turned to see the knotted muscles of his chest bursting forth from his ruined shirt. They were inhumanly thick and looked like steel and she was dripping again in her panties. The same thick red fur burst from his sternum and spread in spirals around his chest. Inexorably her eyes went downward. His jeans were ripping from the bottom. His shoes had simply fallen off, his feet now hooves, which no longer fit in them. His legs twisted and reshaped themselves to fit, looking increasingly equine. Then, finally, the jeans gave out entirely. Shreds of cloth fell from his body. He hunched over in pleasure or pain or confusion, and dropped Redheart, who managed the short fall gracefully, unlike the earlier, longer one. Her eyes were drawn irresistibly to his crotch, but it was shrouded by his hunched stance. His face, mouth still wide, elongated. It was beyond doubt - he was now half-horse, half-man, like a were-stallion.

He rose, muscles even more toned than before, visible below his short fur. As he stood he revealed a firm, flared shaft, just enough smaller than a horse's that she thought she could take it, and massive full balls.

Nevermind, she thought, he's still all man.

Wordlessly, he sniffed the air. Redheart was hornier than she'd ever been while not actually having sex, but some part of her was terrified too - Mac was over seven feet tall now, and his massive muscles left little doubt about the danger he posed if he attacked.

Instead, though, he sniffed again, and turned towards the pen holding the mare.

Of course,, Redheart though. Well, big boy, why don't we give you someone to fuck that's capable of informed consent? Not like I haven't been thinking about jumping you all night. What's a weird magical transformation between friends?

As quickly as she could, she shed her tank top and ripped off her panties. Naked and dripping, she ran in front of him and fell to all fours, thrusting her rear into the air.

He leaned and sniffed her with a snort. Warm breath surged from his nostrils and washed over her dripping sex. She moaned. He sniffed again, and pressed his muzzle between her legs as he did. Involuntarily she pressed back, grinding her dripping slit against him. He huffed. She braced herself to take his cock, savoring and dreading the thought of the massive member sinking into her.

But instead he turned away. Moving unsteadily on his hooves, he moved past her deeper into the barn. He seemed not to have caught the full scent of the mare yet, and didn't move directly towards her stall, but he had clearly rejected Redheart.

She shook her head in several kinds of frustration. As she did, she caught sight of her boots, pants, and bag lying on the ground near her, and realized she was now below the hayloft, having followed Mac back along the course she'd covered in her clumsy glide. In desperation, she dug through her possessions.

Her pistol was no good. She certainly didn't want to hurt Mac, and with his size, she risked making him angry besides. She similarly doubted he'd respect her badge or be swayed by a bribe. At the bottom of her bag, her hand brushed the two Equestrian potions she always carried, both in case Sunset wanted one, but also because she felt any portable magic she had access to was worth having, just in case.

For a moment, she thought none of it would help. Then she had a thought. He sniffed me for a long time. And based on the timing, I don't think I'm fertile right now. What if that's the problem, not that I'm not equine? Her hand closed on the red potion. Still, if she took it, that wouldn't help - it would give her a dick, and make any female creature she used it on fertile. But if she could get Mac to drink it...

In retrospect, of course, this plan was absurd. It seemed clear just from what she'd seen so far that Macintosh was, probably unintentionally, the cause of the mysterious horse pregnancies. And while it would no doubt be an inconvenience for Applejack to have her riding mare impregnated, it would hardly be a catastrophe. The alternative, getting him to drink a potion that not only magically brought his mates into fertility, but also was designed to facilitate cross-breeding, then mating with him, was clearly insane by comparison.

Even in the moment, some corner of her mind realized this. But another part of her didn't want to let even one horse get knocked up once she'd been called in. And a very loud part of her, located between her legs, had just been stroked nearly to orgasm watching Mac jerk himself off, and really wanted to mate with him.

So she ran over, and jumped up on his back.

Without her wings she couldn't have made it, he was so tall, and moved so strangely. But even with her clumsy inexperience, they gave her the boost she needed, and she landed, light as a feather, on his back, wrapping her arms and legs around his broad chest and washboard stomach. Her breasts and dripping pussy rubbed against his marble-firm (and apparently marble-sculpted) back, the light fur doing nothing to conceal his mighty anatomy.

He snorted and shook his head, but apparently had so little trouble carrying her, he didn't seem to care, and walked on. She opened the vial and waved it under his nose. He snorted, and sent out his tongue to lick at it. She poured a drop onto it. He withdrew and seemed to taste it, then snorted happily and sent out his tongue again. She dumped the whole potion onto it, and he lapped it up obligingly.

She wondered how close her contact had to be with him to cause the fertility effect. Did she have to somehow get his cock inside her? That would make the whole exercise pointless. Even as she wondered this, though, she felt him shudder under her, then felt a wave of warmth radiate off him and sink into her body. She shivered, and her pussy oozed with new moisture. She felt different, and while she couldn't identify the feeling, she had a pretty good idea what it was.

She let go of Mac and dropped to the floor, nearly shuddering in anticipation. She turned and presented herself on all fours. She heard him sniffing the air behind her. The floor of the barn shook slightly as he turned to face her. She realized just how heavy he must be, and suddenly was afraid as she thought of trying to support his weight pressing down on her. She looked up, and saw not far in front of her another bale of hay, just about the right height.

Still on all fours, she scampered forward, and draped herself over the bale. It was indeed the right height - her legs and arms still reached the floor, but the bale supported her midsection. She spread her legs, felt the warm night air on her dripping slit. She heard and felt his heavy footsteps follow her. She was aware of her tail, still outside her conscious control, flicking back and forth invitingly.

His footsteps stopped. Again she shuddered at the warm burst of air as he sniffed her eager sex. She thought she was ready for the next step, but when he pressed his muzzle against her, she still moaned and rubbed wantonly against him. Again his muzzle drew back, but now he lifted his head and let out a mighty neigh. She shivered.

His arms landed heavily next to hers, the furred marble pressing against her delicate limbs. His stomach and chest pressed into her back. She felt covered completely, protected but also dominated. Her lashing tail brushed his massive cock, very close now to her entrance, and wrapped around it, guiding it to its target. She felt the flared head at her entrance.

Her tail withdrew just in time. He too must have felt her wetness on him, because he sunk in in a single stroke. His medial ring made her quiver as she felt its process deeper and deeper into her body. She felt replete, stuffed, fuller than should be possible. But there was no pain. She dimly wondered if this was part of the gift of the principals.

Finally his balls slapped against her. They felt nearly as large and heavy as her breasts. She imagined what it would feel like, oh so soon, to have them emptying inside her.

Mac began mating with her. There was no other word she could use - this was not any pace set by deliberate human lover, not even a desperate, needy one. Mac's were the firm, sure, comfortable strokes of an animal covering a willing mate, about to bring forth new life.

At the thought, the implications of her actions finally hit her. She'd made herself fertile, and now was pinned - by her own consent, and quite happily - beneath a man she'd been lusting after, but who was in several ways not currently himself. She doubted anything could now stop him from filling her fertile womb with seed it was enchanted to successfully receive, even across species.

Rather than fear or regret, this realization only drove her deeper into pleasure. In the moment, she craved it. She could barely move, so thoroughly pinned by Mac's massive form, but she managed to move her ass slightly, driving herself back and up, impaling herself on his thick cock.

That was enough for him. He pressed down on her, now immobilizing her completely, burying his cock completely inside her. She felt plugged as his flare hardened and sealed her passage. She gasped and began cumming, knowing what was about to happen. She shuddered on his shaft, pressing as tightly up into his firm body as she possibly could.

He released his seed. Though she knew human wombs had no nerves, she felt the first spurt surging past her cervix and draining into her womb. If she'd loved the warmth of a cock inside her, it was nothing on this. Burst after burst of wonderful heat surged into her, each surge of liquid seeping into her, and she was aware of it. Every burst that breached her walls, she felt a surge of orgasmic pleasure. She groaned into Mac's thick arm. Her belly swelled, pressing tighter against the hay bale. Still he showed no signs of slowing, pumping cum into her stuffed body.

Her tail slithered back and stroked the bottom of his still-heavy balls. He threw back his head and whinnied, letting Redheart's body rise as her belly swelled further. She spread her wings as her delicious tension grew and broke again. Still his feral seed surged into her ready body.

Then something changed. Instead of warmth she felt electricity entering her, and in her mind's eye saw a storm growing inside her, a dark swirl of crackling energy, like lightning run through a negative. Mac's weight on her eased. He let out a confused whinny, and she turned to look at him. She saw veins of the dark lightning crackling in his body, but they were surging down to his mighty cock and into her, and where they withdrew, his transformation faded. His hooves returned to feet. The fur faded from his arms, and his face returned. A maelstrom grew inside of her. Finally his cock shrank to human size and fell from her, no longer erect. Now fully human again, Mac staggered backward. Though he fell into a pool of moonlight, he did not change.

But her vision was fading as the energy crackled over her. She felt it surging into her skin, into her mind. Light fur began sprouting on her forearms. She felt her feet begin to fuse, her mind clouded with animal scents and instincts. Desperately she pushed at the energy with her mind. She felt as if her wings were growing. She spread them, and they crackled with the power. She felt compelled to move them, as if they were full of nervous energy. They beat heavily, feeling far larger than they'd been, and she rose into the air. Her tail lashed wildly. It struck a beam, and a spark of energy singed the wood. Still she felt the power trying to transform her. She pulled up all the will she could muster, looking for anything that could help.

Her mind landed on the seed she could still feel swelling her womb, and discovered there a deep well of vital power. Imagining it like water on a fire, she wished the two together with her mind, the incipient life of the cum within her stacked against the wild abandon of the jagged energy. Slowly her belly deflated and she fell to the ground. Her wings returned to normal. The energy faded. Her feet touched down, and sparks surged out among the hay. Several looked likely to catch, but she stomped on them before they could. Trailing remnants of dark lightning spluttered from her fingers and horns, then vanished. She collapsed. An acrid smoke rose from her.

She staggered to her feet, unsteady but rapidly rallying. Her stomach was flat again, all or almost all of Mac's seed apparently burned in whatever struggle she'd somehow employed it. She found her clothes and pulled them back on. Her phone told her it was 3 am, though none of the events seemed they should have taken that long. She tried, without much hope, to pick up Mac's fallen form, and found that either she was stronger than she realized, or he'd been so drained he was disturbingly light. He was breathing easily, so she hoped for the former. Still staggering slightly, she carried him into the farmhouse and put him in his bed.

She managed to drag herself down to the couch in the farmhouse living room, and fell on it, utterly drained after her burst of adrenaline. Her head swirled. Though it seemed Mac had to be the culprit, she had more questions than before. How had Mac become that creature, and when? Was he cured? Had her mad plan somehow worked to remove the curse, or whatever it was? Did it even burn all the semen out of her womb, preventing the otherwise certain pregnancy? On the last, she resolved to take Plan B the next day regardless, but none of the rest seemed to make any sense.

Giving up, she let her mind go, and passed out on the couch.