> The Only Prescription
>  by False Door
> --------------------------------------------------------------------------

> The Only Prescription
> --------------------------------------------------------------------------

"Cannonball," shouted Shining Armor as he leapt from the diving board. Flurry Heart screamed as her father slammed into the water just in front of her. The wave pushed her back with surprising force.
Cadance sat lethargically poolside in a deck chair under an umbrella. She didn't even flinch as cool, airborne water slapped her hind legs.
Shining resurfaced with a wild splash and shook his mane over his squealing daughter like a wet dog.
She shielded her face with both forelegs. "Stop. Dolphin ride," she demanded.
"Okay." He paddled around, sidling up to her.
Flurry slipped over top of him, grabbing around his neck. She straddled his back with her hind legs and held on as her father set off on a journey around the heart-shaped pool.
The filly tried to settle in but felt a sudden agitation in the region between her legs as it rubbed against her father. It had been bothering her all day but not enough for her to pay it much mind. Maybe it was the physical activity, maybe it was stretching her legs apart but all of a sudden it was like the outside parts were on fire and deep on the inside was a mysterious, aching itch.
Flurry continued to shift uncomfortably, her face flush like she'd just galloped a 10 K. She involuntarily began to grind her pelvis into her father's back.
"What's the matter?" laughed Shining. "Can't get a grip?"
Flurry bit her lip frustratedly, unable to form a reply.
"So, are you coming in or what, Cay?" he asked, gliding by her edge of the pool.
Cadance watched the two of them above the frames of her sunglasses, noticing her daughter's peculiar squirming. "Ehh… Think I'll stay dry today," she shrugged.
Flurry's discomfort did not lessen no matter what position she tried or how she squeezed her nethers. She'd never felt anything like this before and it was quickly becoming unbearable. Her body felt hot and the ache coming from inside her seemed impossible to address. Some kind of assistance was necessary. She wasn't enjoying the ride and it only seemed to be keeping her from finding a solution for her now dire issue.
"Okay, I'm done," she grunted, before abruptly rolling off of her father.
"That was quick," muttered Shining disappointedly as he watched her swim away. His forehead creased anxiously. Was she too old for this now? He dove underwater and reappeared at the deep end ladder where he climbed out, dripping on the warm cement. Then he flopped on the empty chair next to Cadance, shut his eyes and draped a foreleg over her.
"Ahh, you're getting me wet," she laughed.
"And the foreplay hasn't even started yet," he quipped.
"Pfft." She nudged him playfully with one hoof.
"Is Flurry Heart acting kind of weird today?" he asked absently.
Cadance watched Flurry milling about frantically in the water through a debris field of toys. She got half inside an inner tube, straddling the inflatable ring. It looked difficult but she did her best to stay like that for reasons unknown.
It was then that Cadance finally put it together. "Uh… Shining, I think her time may have come."
Shining's eyes shot open in surprise. "Wha- what? Why do you think that?"
"Well, she looks really restless and uncomfortable, keeps shoving pool toys in her crotch and dry humping everything. She's the right age."
He looked over at Flurry Heart, standing awkwardly on her hind legs in the shallow end as she tried to go to town on a pool noodle crushed between her thighs.
Shining Armor's expression turned to stone. At that moment, the entire world shattered around him.
Her time.
Those two words echoed with cold indifference across the empty void where his spirit used to reside. They said 'the end.' it was over. At the age of twelve, his little girl was becoming an adult. No more rides on his back or snowball fights. It was all going to be about boys, drugs and building a diverse stock portfolio from now on. She wouldn’t need him anymore.
Cadance let out a long, apprehensive sigh. "I guess I'd better go help her and… go over the owner's manual." She left her frozen husband reeling in his own hysterical mind and went to counsel Flurry. - - -







Shining sat at his desk in the den, numbly rummaging through his correspondence inbox. His eyes kept darting back to the nearby cluster of little frames sitting on the glossy wood and Flurry Heart's most recent school photo. She wore a green knit vest, a purple and blue braid over one shoulder, ending with a white bow. She looked so grown up, it was uncanny.
He always knew this day would come but he hated how surprised he still felt when it did. He was having a hard time not viewing this as the wedge that would eventually drive them apart, the thing that signaled the end of their carefree fun and the beginning of his obsolescence. It was a matter only exasperated by the fact that he had nothing of substance to contribute to his daughter's struggle right now. But that was kind of a self-centered viewpoint; it wasn't about him. It was a journey for her and… Cadance he supposed. Shining could only hug her and cheer from the sidelines as he mournfully watched the clock run down on Flurry's foalhood.
A few days out from her awakening in the pool and everyone’s temperament had only gotten worse. Flurry Heart's condition proved to be exceptionally insufferable and she had settled into a routine of constant discomfort. At any given moment, she might need to furiously jam her hoof between her legs just to stave off the biological urge to have something inside her for a bit longer. In public, it was always a battle to resist the urge. As a result, she’d lost interest in doing most things with anypony. Unfortunately, she was born in the spotlight and that was where she would live. The Imperial Ball was upon them and Flurry would have to perform socially despite her condition, as if she needed another major coming of age test. - - -







"Use the redwood and polished silver this time," instructed Cadance to the attentive palace decorator. "We can't just have everything crystal all the time."
"Yes, princess." He turned curtly to relay the command to the rest of the workers as they swarmed about the halls, preparing for the evening's event.
Flurry Heart approached her mother with a disgruntled frown.
"Oh, Flurry, have you seen the two dresses I laid out for you?"
The filly ignored the question and instead unfurled a floating royal proclamation in front of her mother's face which read in bold, block letters, 'Princess Flurry Heart of the Crystal Empire has experienced her first heat.'
"Mom, what is this?" she growled.
"Oh, heh, you saw that, did you?" laughed Cadance nervously.
"Of course I did," Flurry shot back. "They're everywhere, all over the empire!"
"I'm sorry, honey, it's just traditional, like a birth announcement or a wedding. It makes all of the Crystal Ponies happy."
"Well, it's kind of embarrassing for me. It's like Hear ye, hear ye, Flurry Heart's baby factory is finally open!"
Cadance rolled her eyes. "Oh, you're just trying to make it sound weird."
"It is weird," Flurry retorted, crumpling up the flier into a ball. "I wish I wasn't an alicorn or a princess, then maybe I could have just a little bit of privacy right now… And I have to go to a stupid ball," she muttered in addition.
Cadance cleared her throat anxiously as she attempted to change the subject. "How is the therapy MagiColt I got you working out?"
"Fine, mom," she grunted.
"It's not too big is it?"
"No."
"Too small? They do have bigger ones if you-"
"Mom!" Flurry Heart teleported away in a huff before the conversation could continue. - - -







Much to her chagrin, Flurry graced the ball in an elegant, navy blue dress but she kept her mane in pigtails as a small act of defiance. Though she felt awful and would rather be doing virtually anything else, she put on a fake smile and made an appearance.
Knowing she was in a tough spot, Shining socialized with the guests but also kept a wary eye on his daughter. He watched anxiously from the other side of the room as Flurry spoke with a cornflower blue colt her age whom he didn't know. His mane stood on end. Oh, no, he thought. What are they talking about? He looked him over, trying to assess if he was a virtuous or timid sort or was he… like he was? What if they tried to sneak off somewhere? Memories of every mistake, every trick, every loophole he'd exploited and every wild teenage desire he'd ever made a reality through sheer lusty tenacity, cycled through his brain like a strobing nightmare.
Between these two older foals might have been some vague understanding of safe sex but they probably didn't have access to any of the tools to actually practice it and they probably didn't care much to wait, bursting with unregulated hormones as they were.
He breathed a sigh of relief as an adult, likely one of the colt's parents, entered their conversation. As he regained his presence of mind, he realized that he had no idea what his own conversation was supposed to be about.
Later, just after night had fallen, Cadance spied Flurry alone with her rump pointed at the corner of a chair near a small decorative table along the wall. The filly was biting her lip with a faroff expression as she surreptitiously wiggled her flanks on the hard point. No doubt, she thought she was being discreet but Cadance knew exactly what she was doing. She teleported to her daughter and leaned in close to whisper. "Um, sweetie, have you been using the MagiColt?"
Flurry grunted frustratedly as she relaxed her hips. "Yeah, but I don't have it with me because you told me to only use it in private."
"Yes, so when you need it, you go back to your room and use it there. Remember, it's impolite to grind on the furniture, especially in front of company."
"It doesn't work for very long and then I just have to do it more," she whined. "This can't seriously last two to three weeks; I will go insane."
"I'm sorry," sighed Cadance "There's not much we can do but just wait it out. You can go upstairs; you don't have to stay until the end. You did great tonight."
Shining watched them sympathetically as Cadance apparated the two of them away to Flurry's  bedroom. - - -







Cadance stared into the crackling flames, her head resting in Shining's lap on the sofa. Shining carefully sipped white wine from a crystal chalice and ran his eyes over the array of framed photos sitting on the fireplace mantel. All these old pictures, they'd been sitting around for years and become all but invisible to him. But now he found himself escaping into them, chased by a cloud of somber nostalgia.
He levitated a particular picture frame from the lineup and brought it to him. He tilted it in the orange glow until he could make out the first photo ever taken of them with Flurry Heart. Cadance laid in a bed, holding her in a little bundle, her mane still stringy and a sheen of sweat on her brow from the labor. Neither of them were looking at the camera; they were looking right at Flurry.
"Why did this have to happen?" he sighed.
"This is what happens," mumbled Cadance dryly. "It's nature. It happens to everyone."
"Well, I don't like it. Why can't she just… stay little forever?"
"Oh, Shining. You can live in a little cloud of arrested development but you can't stop the rest of the world."
He frowned in lament and set the picture aside.
"If they're little forever, you never get to see the next amazing thing. You can't stop it so you might as well be excited for what happens next."
Shining sighed again and stroked his wife's mane. She had a point there. But what would happen next, he wondered.
Their young daughter was miserably horny and desperate for relief. She still had a ways to go to get to the end. If her condition didn't improve soon, it was only a matter of time before she did something truly rash. If instincts got the better of her, she was just going to present to some random colt in the library broom closet and become a locker room anecdote. It made him sick just thinking about it.
"I hate how this is a pivotal moment in her life and I'm just kind of… MIA, sitting in the corner, being useless. How do I help her?"
Cadance raised a hoof to tenderly stroke his cheek. "She just needs your moral support."
He'd heard that term, 'moral support,' many times before but never quite understood what it meant. It usually seemed to be a punchline used by someone who knowingly stood by in a tough situation and did nothing. That kind of behavior went against his grain.
Cadance moaned as she got up and stretched. "Coming to bed?"
"Mmm… not yet," he grumbled, watching the flickering flames.
"Don't stay up stewing too late." She leaned in and they wrapped their lips together passionately. She turned to the door. "This will pass and things will get better."
"Yeah," he breathed to himself before she vanished from the room like a ghost.
For a brief moment he felt embarrassed by his apparent neediness. Cadance probably felt like she was guiding two preteens through their first heat.
He finished his wine and stared into the dying embers, twirling one hoof absently on the upholstered foreleg rest. He desperately wanted to help, to be a part of the moment but what was a stallion to do? Well… there was one thing they could do, provide the bona fide biological solution to a heat. Things were easier for adults in relationships. He supposed though that if it came down to it, it could be conceivable to orchestrate an encounter with a colt, but whom?
He scoffed at the absurdity of his own brain. Cadance probably wouldn't go for a scheme like that and he couldn't stand the thought of vetting a suitable male to ice his daughter's heat. That was weirdly cynical and no one was ever going to be good enough. It would have to be someone who showed up for the right reason, someone who truly cared about her needs and well-being and wasn't just rubbing their hooves together at the thought of getting a piece of alicorn ass and then regaling his buddies with the details. That would have to be… someone like himself.
Shining frowned as the pieces clicked together in his head. Someone like himself. He was someone like himself. There wouldn't be anyone more trustworthy to do the job and do it right than himself. He scratched his head, dubious of his theory. Yeah, he ticked all the boxes but he was also too old for her, and married, and her father. But on the other hoof…
Okay, it was plainly illegal and looked down upon by society but it would be just one time. No one would know about it and he'd be really careful not to harm her. That was the last thing he wanted to do. Cadance… perhaps would not understand his methods but maybe his reasoning at least. It wasn't a betrayal of their vows. It wasn't like he was bored of her and looking for action on the side; it was simply for the purpose of helping their daughter which was something he knew they both agreed on very much. As for being her dad… and potentially her first sexual encounter, while it wasn't exactly proper or ideal, he was prepared to overlook societal decorum for her, as long as she was okay with it.
Shining slammed his hoof on the foreleg rest with solemn conviction. That settled it. He wasn't just going to stand idly by and watch his daughter suffer any longer; he was going to play a role in this milestone and help her beat this thing. He wasn't useless to her yet. - - -







Shining would have liked to ingest a little more liquid courage before setting sail for uncharted waters but he knew that it was ultimately more important to stay frosty if he was to execute his mission with the care it required.
He exhaled, plodding up to Flurry Heart's door just to see. She'd had a long day and should have been asleep by now but he could see a light through the crack at his hooves.
He knocked twice quietly. "Flurry," he called softly. "Can I come in?"
"Yeah," she groaned.
Shining looked up and down the hall before blinking into his daughter's bedroom. Laying atop the rumpled covers of her four-poster bed, she snapped a book shut and tossed it to the floor with a thud next to her MagiColt which she’d forgotten to conceal. It looked like she had tried to sleep but failed.
Shining crept over and sat down on her bedside. "Hey, angel. You did great at the ball; I'm really proud of you." He wouldn't mention to Flury that he never would have made her go; that would just be throwing Cadance under the bus. Although, he was pretty sure that thought had already passed through her head and went without saying.
"Thanks," she said quietly, rubbing her eye.
"How are you feeling?"
"I want to die," she droned hopelessly. "How are you feeling?"
"I'm sorry it's so bad." He almost automatically consoled her with the well known truism that it usually gets better after the first time but didn't want to come off as patronizing about a struggle he'd never even experience. Not to mention that Cadance had undoubtedly already used the line.
"You'd probably do just about anything to find relief."
"Yeah," she groaned.
Shining bit his lip. "Didn't you just learn sex education in school?"
"Uh-huh," she nodded.
"Okay, so you already know the basics about how it works and why this is happening… And… what makes it go away."
"Mom explained it too," she added.
"Right, so how about this, would you like to get rid of your heat right now by having sex with me?"
He tried to keep a straight face as he was suddenly gobsmack shocked by his own words. They sounded so much less insane in his head. What the hell am I doing, he thought. Abort, now. You misspoke. Tell her good night, good luck and then leave.
Flurry cocked her head to one side. "I thought sex was supposed to be for two older ponies who are married and want babies."
Shining scratched his head in thought. Was it Cadance or school that told her that one, he wondered. "Well… not always," he began cautiously. "Sometimes there are… special circumstances where it also happens. In this instance it would be between the two of us just to get rid of your heat. Would you like that or no?"
Flurry's eyes flicked side to side. "Um… yeah. Okay."
Well that was a shockingly easy sell, he thought. Either the gravity of the act was completely lost on her or she was so miserable, she was down for whatever as long as it got her over it.
Shining swallowed as trepidation swirled inside him. "Alright… we can do that. Um, uh… Just remember, if you feel uncomfortable while it's happening, tell me and we'll fix it and if you want to stop, just say stop and we'll stop… and one other thing, when two ponies do this together, they always keep it a secret from everyone else."
Flurry’s eyebrows raised in intrigue. "Really?"
"Yeah, that's why you never hear anyone talk about it."
She considered this for a moment. That was true. How mysterious. "Oh… So we don't even tell mom?"
Shining gritted his teeth. "Correct."
"Okay, what should I do?" she shrugged in a blase, almost impatient, manner.
Shining opened his mouth, paused for a moment and then closed it again. In his head, he'd failed to hammer out all of the logistics of this scheme. He'd fallen into a complacent routine of sex with Cadance and hadn't given the act much thought for quite a while. What was there to figure out anymore but time and place? But this wasn't casual for-fun sex with his significant other who he found incredibly erotic, it was intimate assistance for his daughter who he was not sexually attracted to and that made things difficult.
Penetrating Flurry Heart was one thing but he didn't want to… kiss her the way he kissed Cadance. But if they didn't kiss, they needed an alternate form of foreplay to get him up and ready. He could try to get himself going alone but he hated doing that in front of an audience and the situation was so unsexy to begin with that he wondered if he could even pull it off. That just left… Flurry assisting him amateurishly with her hooves or mouth. Maybe if he closed his eyes and thought of Cadance- No. No. That was a bridge too far. This was entirely about helping Flurry Heart, it should be as clinical and joyless as possible on his end and she shouldn't have to do anything that could be construed as sexual reciprocation. It was like scratching someone's back for them. That's all.
"Well, first you need to drink this." He floated a little tube of birth control solution in front of her face.
She squinted at the pale blue liquid. "Oh, what is it?"
"It's called a birth control potion. You drink one when you want to have sex but don't want to have a foal and you definitely don't."
"Oh, yeah, I've heard of that." She took the vial in her hooves, uncorked it with her magic and downed it.
Shining took back the empty tube, squirreling the evidence away.
"Do we… make out for this?" she asked with a hint of worry.
"I have a better idea," he assured her. "Just lay on your back on the bed with your legs apart,"
She laid back with her head on the pillow and spread her hind legs, feeling the urge rise within her again.
 Shining crawled up on the bed and hovered over her. "This is just to help get us ready. It might feel weird at first but you'll probably like it by the end. Might be best if you close your eyes."
Shining sat below her splayed hind legs and beheld the swollen banquet he was about to devour. Flurry Heart blushed under his gaze but stayed still. As he laid down on the foot of the bed, he did a slow faceplant into her soft mound, getting a muzzle full of her raging pheromones as he landed. That was the ticket. It didn't matter who it came from. A fully functional stallion was biologically hardwired to respond when hit with that scent and Shining was no exception. He felt an immediate tightening in his loins as his brain began to fog with lust.
She was fully ready to go, had been for days but it certainly wouldn't hurt to warm her up for what was coming next.
Flurry gasped as she felt her dad's nose rooting around in her folds, eliciting little tingles of pleasure that quickly overtook her hesitant embarrassment at the strange act. She shivered as Shining dragged his tongue up the length of her slit.
"Un… That- that feels really good," she quivered.
He got straight to business. His lips caressed her clit, taking it into his mouth where he swirled his tongue around it.
Flurry gasped in surprise at the indescribable sensation. She put both forehooves on his head and shoved his face into her needy snatch. She arched her back experimentally, knowing she wanted more of the feeling but not quite sure of how to achieve it. She was certain that she wanted something inside her and her father's muzzle was the only thing there was. Her hips began to gyrate involuntarily.
Despite his face getting mashed, Shining continued suckling expertly in his daughter's nethers. She seemed to be enjoying it which put some of his worry to rest.
Flurry had now reached a height of pleasure that she hadn't been able to achieve in her previous fumblings with trying to appease her heat. She knew there was something amazing to be had there; she just hadn't figured out how to get it yet. Dad really knew what he was talking about.
She let out a squeak of ecstasy as Shining continued his assault, his lips kneading her like putty while his tongue stroked up and down with merciless clockwork efficiency. Her father possessed a virtuosity impossible for her inexperienced mind to quantify.
Shining felt about as hard now as he thought was physically possible. They were both ready but he felt he should finish her off; it would be rude not to.
Flurry Heart's tongue hung out as she panted hoarsely, her hooves still messing up her father's mane without conscious thought. It just kept building, she'd never felt anything like it. Suddenly an overwhelming rush of euphoric bliss swept up and over her.
She desperately wrapped all four of her legs around his head, curling around him and squeezing like a vice. She shuddered as her first climax rocked her little body.
Shining slowed his sucking and let her float back down. Her shaking stopped and her legs loosened as a dreamy haze settled over her like a warm fleece.
"Fu- fuck," she breathed shakily, then abruptly covered her mouth with her forehooves.
Shining's eyes bulged. He looked up from his daughter's sopping wet pussy and frowned at her, muzzle soaked with her juices.
"S-sorry," she quivered. "I don't know why I said that."
"Where did you even hear that word?" he growled.
"School?" she replied slowly.
"I told her we should have used a private tutor. Ugh… We'll talk about this later."
Shining got down to the floor, his erection aching beneath him. He patted the bedspread. "Scoot over to the edge of the bed and lay on your back again."
She turned and wriggled her bottom half toward him, parking it in front of his face once again. "Like this?"
"Perfect." He took one last whiff of her inspiring bouquet, reared up and planted his forehooves on either side of his surprised daughter. The tip of his cock slipped up onto the edge of the comforter where it lined up naturally with her . He looked down and furrowed his brow in concern.
He'd come into this matter fully aware that she was still significantly smaller than a full grown mare and thus not an ideal fit for him anatomically but seeing the end of his fully engorged shaft staged expectantly next to Flurry's pert little slit really put things in perspective.
He grimaced apprehensively and then looked her in the eyes. "This'll be fine as long as we take it slow."
“Uh, okay,” she shrugged flippantly once more, trusting he knew what he was doing but also craving anything to have her fire doused.
Shining eased forward, his drooling tip softly kissing her entrance.
She sucked air at the sensation, anticipating his firm but gentle entry.
The point of no return. He swallowed and continued. Looking down, he saw the rim of his flare tease apart her chubby pink folds. They stretched wide but slowly around him and suddenly he could feel the heat of her core radiating directly into his tip.
Flurry Heart moaned as her flesh grudgingly parted to allow the entrance of her father's girth. It stung as she stretched open further than she ever had before but in a satisfying way.
"Are you okay?"
"Go in deeper," she commanded, suddenly growing more anxious for full insertion. He was barely in but she could easily tell he was significantly larger than the MagiColt her mom had given her. There was a bit of discomfort but it was handily drowned out by her instincts screaming at her to go further right now. She needed it all the way inside like she needed oxygen.
Shining continued to slide in slowly. He watched vigilantly as more of his shaft disappeared inside her. He stopped his descent immediately when his tip bumped into the end of her tunnel about two thirds of the way in for him.
Shining looked down at his daughter to gauge her mood.
She sighed contentedly as if she'd plunked her aching body into a warm bath. "It's feeling better already," she breathed with the smallest hint of a smile.
Emboldened by her positive reaction, Shining slowly began to pull out then push back in with a thick, popping squelch. He was working with a proportionally smaller depth for his length. Unable to fully bury his shaft inside her, his strokes had to be shorter and precise to not only keep from hurting her but keep from accidentally slipping out. It helped though that she gripped him so tightly. Her hearty squeeze and shallower depth meant her lower lips were directly massaging his medial ring as he pumped in and out of her.
Rutting her was slow and sticky despite her abundance of lubricant. It was a totally different experience than laying with a full grown mare. More friction and pressure but only on about half of his length. He was used to just slamming all the way home while inside of his wife, his pace snowballing along with his pleasure. Now, with measured, plodding thrusts and minimal contact, it built much slower in a titillating tease. It was the excitement of climbing to the top of a mountain versus the thrill of a sprint race.
He'd be lying if he said her fillyhood didn't feel novel and amazing. It was an uncomfortable admission to make but in the end, was a certain amount of enjoyable stimulation for him not a necessary catalyst for his daughter's recovery?
Curious about what was happening to her body down there, Flurry looked down between their bodies. She saw her stomach bulging rhythmically and, for the first time, her clit presented in clear view as it rippled atop her father's sliding ring. Beyond that were the smooth sides of his hefty balls swinging freely in the air, peeking from behind his speckled base. Mesmerized by all the moving parts of their combined flesh machine, she placed a hoof on her stomach and felt her body undulating from the inside out with the steady beat of her father's pumps. Her eyes traced back up Shining's towering, ivory physique to see him panting and staring at the wall ahead with a glazed but focused expression on his face. She'd never seen him look like that and wasn't sure what it meant.
Everything about this was so weird but it felt agreeable, not as mind-blowing as when he was kissing her between the legs but not bad. The real satisfaction though was that for the first time in half a week, she felt real relief within her loins.
"We're almost there," grunted Shining, his thrusts getting a little rougher and off kilter as he fell prey to chasing his own orgasm. He closed his eyes and imagined he was plunging straight down his wife's gullet, her tongue lashing the underside of his shaft, still managing a sly smirk with her mouth full of his meat.
Shining's jaw went slack. He looked up at the ceiling with closed eyes as he erupted inside of his daughter. His hot, soothing seed gushed into her deepest depths, filling her up and spurting back out in a sloppy white ring around his girth.
He exhaled contentedly and looked down at the aftermath. "Oh, wow," he marveled at his own volume of thick cum, now collecting in fat, creamy dollops on the bedspread. It had been a while since he'd actually seen his own load. He was used to blowing it all in whichever end of Cadance and, for the most part, never seeing it again. The sight gave him a sense of accomplishment. She was stuffed to the brim.
"Well, if that doesn't do the trick, nothing wi-"
His words died immediately as Cadance, thought to be asleep, barged into the room unannounced and floating a little pink box with her magic.
"Honey, I got you a couple of larger-"
Her eyes grew to the size of dinner plates as they landed on her husband hunched over their prone daughter, his cock still inside her, dripping with globs of excess blowback semen. The two entwined ponies stared back, frozen, mirroring her expression.

"Mom, you NEVER knock," Flurry blurted angrily.
Cadance dropped the box, her eyes narrowing with rage. "You rotten, bastard!"
Shining winced and yanked out from his daughter with a squelch and a mutual spurt. Before he could form a single syllable of a defense, he was teleported away to the great dining hall of all places.
"I can't believe you would do this," shrieked Cadance, telekinetically wrenching a crossed saber from the wall above the coat of arms. It righted itself in the air and floated swiftly toward him.
"Cadance, hold on, let me explain," he sputtered in terror. "Put the sword down!"
The sword went cartwheeling straight at him. Shining teleported the other saber from the wall just in time to block Cadance's whirling attack with a loud clang. Her blade recoiled but came back with a series of wild swings. Their swords clashed in the air and Shining maneuvered away.
"You violated our daughter and betrayed me," she shouted in a voice approximating the sister's booming Royal Canterlot Voice.
"No," he shook his head defensively. "Well, it- it's not cheating, really." He sidestepped a thrust that got through his defenses.
"What do you call extramarital sex without permission? You never said anything about this to me; you just went behind my back!"
"Because I was afraid you'd be angry and weirded out."
"Well, you were right," she scoffed. "Not really a point in your favor though, you pervert!"
Cadance lifted a pair of chairs with her magic and hurled them violently at her husband. He teleported to the opposite side of the table, evading the attack as the chairs smashed into pieces on the crystal floor. She followed up with another sword volley that reverberated through the crystal hall.
"This sort of thing isn't as taboo as some think," argued Shining, bobbing and weaving in the relentless onslaught. "It has historical precedence, in fact it was commonplace in olden rulerships where they wanted to preserve the family bloodline."
Cadance screwed up her face in a derisive expression. "Oh yeah, I remember it was real popular with the families that all had extra hooves and congenital blood disorders and I'm sorry, were you trying to breed our daughter or ice her heat? Pick one. It doesn't matter which, because neither are okay!" She made a sweeping lateral slash across the table, sending a candelabra and silver centerpiece flying to the floor with a crash.
"It was her heat," cried Shining. "It was so bad, she needed someone to help her end it and I decided it should be me because I didn't trust anyone else to do it and I just wanted her first time to be… a positive experience that was safe and nurturing."
"You can't nurture someone with your DICK, Shining," she roared. Her horn glowed with collecting energy and burst forth in a focused beam.
Shining summoned an ethereal shield and deflected the blast into the ceiling where it burst through the great chandelier. The whole fixture sagged under its own weight and then plummeted, coming down on the center table with the deafening sound of a thousand shattering crystals.
"And your first time isn't supposed to be safe and positive, raved Cadance. "She's supposed to lose it in a dirty alley behind the Cineplex to some dumb kid who put on way too much cologne and falls asleep immediately after cumming. Then she goes home scratching her head and wondering what all the fuss is about until college. That's the cycle. That's what's normal." Her sword whipped in a staccato through the air, clipping off a lock of Shining's mane.
"Yeah, but just because it's normal, doesn't mean it's… good. Wouldn't it be better if I set the bar higher for her future sexual partners? That way she doesn’t have to waste time with guys who won’t…” Eat out was what he was going to say but he thought it would be better to reroute his words. "I just wanted to help her. It was a selfless act of love and I had only her best interests at heart."
A platoon of stone-faced palace guards burst through the double doors just in time to see Cadance heave a twenty seat, solid wood banquet table across the wreckage of the dining hall where a beleaguered Shining Armor teleported out of the way before it landed with a small earthquake. The unit quickly turned back and retreated from the room.
"Part of becoming a mare is learning to tough it out! You can't just go jump on a cock every time you get the itch!"
"But it's her first one. She gets it. Hasn't she suffered enough?"
"You had sex with your own daughter who's not even of age!" she blasted, the core undeniable sin before stabbing at him again.
“Okay, I admit that this wasn’t an ideal solution to the issue. I just feel like we were blindsided by this whole thing and we can all do a better job next time because we’ll be prepared. We just need to sit down and have a talk about all of this so that everypony's on the same page and understands how the family and age dynamic is supposed to work under normal, socially acceptable circumstances.”
Suddenly, Flurry Heart apparated in between the two of them, just below the pair of dancing sabers. "Mom, stop," she screamed. "Don't kill daddy!"
Cadance quickly pulled back her weapon and tempered her voice to that of an amiable parent. "I'm not going to kill him, sweetie. We're just having a grownup argument. Now don't worry about it and just go back to bed."
"No. No more arguing. He just wanted to help and he did."
Cadance grimaced. "Flurry, you're confused and have been exploited."
"But I feel so much better now. I wish we had just done this sooner."
"Ugh." Cadance dropped her sword and collapsed to the floor in conflicted disbelief.
"Aren't you glad for me?" shrugged Flurry Heart.
"You don't understand. This sort of thing is not normal and I don't want you to develop a warped view of sex or a stallion's role as a father."
"I'll- I'll be fine," she replied, unsure of how to support that argument. On some level she was aware that she lacked a full mental framework of the adult world but her father told her he could help her feel better and he did and at the moment, that was all she could see.
Shining dropped his sword on the table. "Cadance, I know there's a lot more elements at play but this is honestly all I wanted. I'm sorry I didn't tell you. It was an idea that just came to me while I was worrying on the sofa and I was afraid you'd misunderstand. I think if we just talk about it, we can find a healthy way to move forward."
She looked into his eyes and found that they were indeed full of storge love for Flurry Heart. She shook her head, still upset but willing to listen.
"Understand that this was a one time thing that will never happen again," growled Cadance.
"Of course," agreed Shining, relieved that they seemed to be reaching a conciliatory phase.
"I still think your actions were rash but I can believe your intentions were… good, for lack of a better word. But be that, as it may, we still need to keep this a secret between just us."
Shining's eyes did a sweep of the destroyed dining hall, his ears still ringing from his wife's full volume accusations and lambasting.
"Yeah," he droned skeptically. - - -







Shining sat on his bed, stone cold sober, listening to the sound of his daughter retching as it emanated from the open bathroom.
Cadance appeared sullenly in the doorway and floated the positive at home test carelessly into Shining's lap. "Congrats, gramps," she growled. "Hope you're happy."
The stallion tore his eyes from the double pink lines and jolted off of the bed. "H- hold on. Let's make sure to get all the information before we start pointing hooves."
He poked his head into the bathroom where Flurry was hunched over the porcelain, still wearing her uniform from her feeble attempt to go to school.
"Um, Angel, are you sure you didn't have sex with anypony else in the last month or so? You can tell us; we won't be angry."
"No one's angry at Flurry Heart," scoffed Cadance. "I'm angry at you."
"Don't be mean to daddy," bristled Flurry, spitting into the bowl. "This is my fault too."
"Sweetie, you can't legally consent and this is partially why. Those laws exist for a reason."
"Whatever. I don't care," she blurted defiantly. "It still worked and it was still fun."
"Oh, Flurry," gasped Cadance, looking like she was about to faint at the unsolicited admission.
"Okay, okay," interjected Shining. "All I'm asking here is, are you absolutely sure I'm the one who got you pregnant."
"Yeah, I'm sure," groaned Flurry.
Cadance frowned. "What about the birth control? You said you gave her birth control."
Shining threw up his forelegs. "I did. I just gave her one of the potions from the medicine cabinet."
"What potions from the… Those are probably all expired, Shining! They're from before I switched to the enchanted ring… years ago!"
"Well why are we still hanging on to them then?" he grunted.
"Stop fighting," whined Flurry. "I'm scared."
"Well since you're such a big girl now who can consort with whomever she wants-"
"That's not what I said," argued Flurry, still double hoofing the bowl rim.
"Maybe you should decide what we do now," finished Cadance haughtily. "But first, let's take a sanity pulse check. Who here thinks Flurry Heart will be great mother to her three-quarters sibling as she tries to navigate middle school? Raise your hoof."
No one moved.
"Well, that's one thing we can agree on," she grumbled.