Following Tradition

by Script Write

Rating: mature
Tags: My Little Pony: Friendship is Magic, Flurry Heart, Fetish, Porn, Sex, Shining Armor, Slice of Life, Twilight Sparkle
Length: 5332

Twilight gets saddled with the responsibility of caring after Flurry Heart for a fortnight, giving her the perfect oppotunity honor a Sparkle family tradition. [CONTAINS FOALCON]

WARNING: This fic contains foalcon, diapers, watersports and scat.

For years, the Sparkle family has taught their fillies the art and pleasure of sex. Twilight was no exception, her parents teaching her all there was to know about how to please both herself and her partners.

Now it's Flurry Heart's turn to carry the torch. Her parents are off on a much needed break for a whole two weeks, leaving the foal with her aunt.

It's going to be a fun fortnight.

This is a commission requested by Thunderchaser23!

The cover art is drawn by Sliderspoint, as the original is too lewd for FimFic, you can find it on their artist search page by searching 'artist:sliderspoint, princess flurry heart' on Derpibooru. The picture itself has no direct connection to the story.

Edited by Snipinexpert and Anonymous.

Published 2018-03-16 02:00:06 UTC
Last updated 2018-03-16 02:00:06 UTC

A New Kind of Game

Knock-knock.

The sound of somepony knocking on the the front door reverberated throughout the castle halls, waking Twilight from her slumber.

She groaned as she checked the time, flicking her light switch with her magic. Twilight wasn’t usually a morning pony, and she hated being woken up before her meticulous sleep schedule instructed her to.

“Who could possibly want me up at seven-thirty in the morning on a Sunday…” she muttered to herself, trying to remember if there were any commitments she’d made that she’d just forgotten about. She rolled off the bed with a crinkle of the large, poofy diaper wrapped around her waist. Her mind was dragged out of dreamland as she started to wander down the hall towards the front door.

Knock-knock.

It came again; whoever was at the door really wanted her to answer, and quick.

As she neared the doors, it became clear that the voice muffled by the crystalline-paneled structure of the castle was one Twilight knew all-too-well. She could only just make out what she was saying, but she could recognize the tone from a mile away

“Maybe she’s not home?” asked the voice of Flurry Heart.

“She better be,” replied her father.

Suddenly, Twilight remembered what the day was.

She swung the doors open, revealing the pair standing expectantly before her. Flurry bounced excitedly on the spot, a pair of Mistress Mare-velous-themed saddlebags locked around her barrel. Her brother carried the rest of the filly’s elaborate luggage. Being a princess meant she was even fussier than a normal filly her age, and the sheer amount of bags was proof.

“Big broth— Ack!” she couldn’t even finish two whole words before Flurry launched herself at Twilight’s neck, wrapping her arms around the older mare in a tight hug.

“H-Hello, Flurry!” Twilight said affectionately, supporting the little filly’s rear with a hoof. A rush of happiness surged through her as she heard a familiar crinkle from the enchanted invisible diaper Flurry’s flank. “Wow, you’re getting big!” she noted, containing her excitement.

“Thank you so much for having her while we’re away, Twily. You have no idea how much this means to us, what with Sunburst taking that sudden trip to Saddle Arabia and— ” Shining began ranting in his usual ‘stressed dad’ tone. Twilight giggled and silenced him with a flash of his horn to close his mouth for him.

“Anything for my B.B.B.F.F.,” Twilight replied.

Shining and Cadence were on their way to Neighpon for a much-needed bout of alone time, without a small filly to watch over for the first time in six whole years. Everypony who subscribed to the gossip and celebrity of their marriage was waiting for foal number two, so when doubts began to surface about whether or not they’d have to take Flurry with them, many royal couple fans were more than disappointed.

Luckily, Twilight had heard through the family grapevine that they were in desperate need of a sitter, and just so happened to have a few weeks free to take care of their royal pride and joy.

Of course, simple sisterly love wasn’t the only reason she cleared her schedule so willingly and sent the Canterlot Magical Research Society (which Sunburst was a proud member of) on a trip to Saddle Arabia just before the couple was set to leave.

“Can I go play, Aunt Twily?” Flurry asked, slipping her hooves from around her aunt’s neck and letting herself slide off of Twilight’s supporting hoof.

“Say goodbye to daddy first, you’re not going to see him for a whole fortnight!” she said.

“Bye daddy!” she said while speeding off down the hall to the room which Twilight always had filled with toys for her visits.

Both grownups chuckled softly at her eagerness. “Do you want to come in? I can make some tea if you’d like,” Twilight asked, nodding to the kitchen.

“I’ve got to run off, I’m meeting Cadence back at the train station and we’re on a tight schedule,” Shining replied, ruffling her mane. “There should be enough diapers to get you through at least the first week or so, but if you run out just let us know and we’ll get some more sent,” he explained.

Twilight smirked a little, no way was she going to use the boring enchanted padding her parents forced onto her.

Despite all her parent’s efforts, Flurry had always struggled with an inability to potty train. Her body just didn’t obey her intentions the same way as others her age had. This meant she was forced to stay in diapers until the Crystal Kingdom’s brightest medical professionals could work out exactly why such things were happening.

Twilight, however, adored the idea of her niece staying visibly diapered for as long as possible, being a lover of padding herself.

“Got it,” Twilight nodded.

“Also, maybe you could cut back on your uh… You know… Around her?” he asked, gesturing to her padded rump. “We’re still holding on to the hope that she can be potty trained and we don’t want to confuse her any more than she already is…”

“Oh, of course!” Twilight lied, having absolutely no intention to encourage her niece to make herself familiar with the toilet.

“Great!” he said, pulling her into a tight hug. “Is there anything else?” he asked.

“Nope! Don’t worry about us, we’re going to have so much fun! Just enjoy the break,” she replied, hugging him back.

“I’ll try,” Shining said, stepping back through the doorway. “See you, sis!”

“Bye, B.B.B.F.F!” her horn glowed as she swung the door shut.

A mischievous smile grew on her face. she had been waiting for this opportunity for so long! It was finally time for her to continue one of the longest family traditions held by the Sparkle family.

Since the family’s inception, they have been famed for two things, incredible ability in astronomy and magic, and the incredible sluttiness of the familial matriarchs.

From the age of five, Twilight’s parents trained her in the pleasures of the night. Everything from simple kissing to a legendary 12-hour endurance was on the table in teaching her how best to go about making other mares and stallions as ‘happy’ as possible. Cadance happily aided in this endeavor, teaching Twilight all there was to know about her body and how to best pleasure every inch of herself after dark.

As she headed for the playroom, a pang of anxiousness resounded through her body. She wrestled with the idea of betraying her brother’s wishes for the sake of tradition, as she knew exactly how he would react if he were to discover what she and Flurry were up to.

‘No,’ she told herself. ‘I can’t let the Sparkle family traditions can’t die with me. Besides, we’ll stop if she says no…’

She heard the filly giggling and chatting to herself happily within the playroom, bringing a smile to her face. As she rounded the corner she saw Flurry Heart sitting on her padded rump, playing with some dolls she’d found in one of the multiple toyboxes scattered around the playfully decorated room.

“Flurry!” she said, drawing the foal away from her games.

“Yes, aunt Twily?” Flurry asked, using the pet name her father always used.

“Come here, let’s check if you need a change.”

“I don’t!” she pouted.

Twilight sighed and trotted over to her, lighting her horn. She effortlessly lifted the filly, pulling the waistband of the diaper she was wearing away from her body to check just how sodden she was.

Flurry folded her forelegs and puffed out her cheeks in rebellion, resigning to her fate as Twilight inspected her padding.

“Wow, you’re soaked!” Twilight said, squishing the front of the diaper with her hoof. “Are you sure you don’t need a change?”

“Mommy and Daddy never change me unless I make a mes—” she cut herself off with a growl of complaint from her bowels, a blush spreading across her face. “Uh-oh…” she muttered not long before a soft ‘frrt’ came from her rear, along with a lumpiness which Twilight watched form in her padding.

The older mare made a show of sniffing the air. “Pee-yoo!” she said, “Looks like you really need changies now, huh?”

Flurry sniffled, feeling the warm mush spreading across her rear the more she squirmed uncomfortably in her messy nappy. “Y-Yes, please…” she stammered, her resistance all but shattered by the pure embarrassment of having a grown-up watch her mess herself.

“Do you want to walk yourself or be carried?” Twilight asked.

“W-Walk myself…” Flurry sniffed, tears welling up in her eyes as her aunt placed her back on the floor.

“Alright, then follow me!” Twilight encouraged, heading out of the playroom and towards the spare bedroom she’d designated as her changing room in the castle.

Behind her, Flurry choked on her tears. Twilight’s ears folded back as a pang of sympathy ran through her body.

“Hey, don’t be upset, grown-ups have accidents too, see?” Twilight said, tensing up and focusing for a few moments before warm urine began to flow from her cunny, creating a wet spot on her diaper which grew larger and larger before Flurry’s eyes.

With a satisfied grunt, Twilight began to push out her own mess into her padding, grinning happily as she felt the hot, sloppy mush force its way out of her tailhole and spread across her rear. A blush warmed her face as she realized she was messing herself in front of another pony on purpose, and she was actually enjoying it!

Flurry giggled at her aunt’s ‘accident’, wiping the tears from her eyes and taking solace in the fact that she wasn’t alone in her messiness.

Twilight set off once again, crossing the hall and entering the bedroom-turned-changing room. She held the door open for Flurry before shutting it and locking it. Her horn flashed as she cast a soundproofing spell on the room. She didn’t need any of the castle’s other occupants overhearing what was about to take place.

The room had two changing tables set up, one foal sized and the other considerably larger. Two large cabinets labeled sat along the back of the wall, stacked from bottom to top with wet wipes, foal powder, and an egregious amount of diapers.

She set Flurry on her back atop the changing table. Her magic tugged the tapes off her diaper with a loud tearing sound, making the ruined padding flop off her unceremoniously and reveal her mush. Twilight admired the sheer amount of mess that Flurry had managed to push out, leaving almost none of her padding free from a smear of brown or yellow.

“Would you like to play a new game, sweetie?” Twilight asked, smiling down at the foal.

Flurry’s eyes lit up. “Yes, please!” she said, a smile spreading slowly across her face.

“It’s a very special game, and you can’t tell anyone about it, okay?”

“Not even daddy?”

“Especially not daddy,” she said, a serious tone in her voice.

“What about mommy? Can I tell her?”

Twilight opened her mouth to tell her a stern ‘no’, but a smile grew on her face at the mental image of Cadance finding out that she was handing down the lessons she learned during their long nights together.

“Yes, you can tell mommy. But only her, okay?”

That seemed to placate the filly, who nodded in understanding and squirmed impatiently atop her ruined padding.

Taking a few wet wipes, Twilight quickly cleaned Flurry’s rump. The filly giggled as the wet cloth brushed against her fur, removing the mess that had clung to her. Ensuring she was clean enough, Twilight threw the wipes into a nearby trashcan and slid the ruined diaper beneath her out, replacing it with a new one from the stack in the cabinet behind them.

Twilight had made sure to get her hooves on special ‘Mistress Mare-velous’ diapers, the kind that were supposed to be made for colts. Flurry always asked for superhero toys as gifts, and her aunt always kept tabs on who her flavor of the month was, knowing that she and Spike were often one and the same when it came to their preference for comic book characters.

Flurry giggled a little at the graphic of Mare-velous proudly emblazoned on the front of the padding, wiggling to make herself comfortable in it.

Twilight’s horn lit up once again as she pulled a mysterious box from the cabinet behind the larger change table, taking a pair purple, egg-shaped devices from within it. Flurry tilted her head at the sight, curious as to what they were.

“What are those for, Aunt Twily?” she asked.

“These are for playing the game! They go in your princess parts like this, see?” she said, placing the egg against her tiny exposed slit and gently pushing it into her.

The filly tensed and squirmed as new sensations ran up her spine, her body not sure how to react other than to send her into a fit of giggles.

“Th-That tickles!”

“Just relax, sweetie,” Twilight instructed, holding the purple toy in place as she pulled the diaper up around Flurry’s waist, securing it in place.

She left Flurry to stew in her pleasure while she hopped up on her own oversized change table.

She ran a hoof across her rear, feeling a rush of pride in her chest as she felt her mushy shit squish against her soft butt. Her hoof pressed against her dripping slit making her realize just how worked up she was at the thought of training her innocent niece.

Her magic flashed and ripped the tapes of her diaper away from its front, letting the soiled plastic fall away with a wet ‘squelch’. After giving her own rear the same treatment as Flurry and sliding her own, bright pink diaper under her rear, she pressed a larger egg against her cunny, letting out a soft moan of pleasure as she felt it gently part her delicate flower.

Flurry watched with an innocent curiousness in her eyes, squirming as the egg shifted and pressed against her virgin hole.

Twilight wasted no time pulling the front of her diaper up and taping it in place before wiggling in it a little to help it sit better on her flank.

A mischievous smile flashed upon her face as she used her magic to engage the eggs, making them vibrate gently against both her and Flurry’s slits. The filly gasped at the sudden movement against her sensitive vag, making Twilight giggle a little as she gently pushed the egg into her charge’s needy cunt beneath her diaper.

“Is the game making you feel good, sweetie?”

“Y-Yeah!” Flurry squeaked, each of her slight squirms shifting the egg against her folds.

“You can make it feel even better if you focus your super hard on your diaper, and if you do, it’ll make mine go faster too!” she said, smiling as she directed her magic to her padded rear, making their eggs increase in speed and intensity. “And I can do the same!”

Flurry huffed and panted, her legs quivering and her face flushing red at the strange feelings engulfed her crotch. She ground herself against the source of her pleasure, her back arching a little in an attempt to force the vibrator deeper into her needy folds.

“H-How do I win the game?” asked the shuddering filly.

“The pony who wins is the pony who cums first!” Twilight panted excitedly, the pleasure of the egg making her body hotter with each passing second.

“What does th-that mean?”

“Y-You’ll know it when it happens~,” she explained, only confusing Flurry even more until Twilight further increased the speed of their toys, gently pushing the egg deeper into her niece at the same time.

Her questions evaporated as the pink alicorn moaned out in arousal. Desperate for more of the pleasure coursing through her body, she lit her horn and surrounded her nappy with its glow, sighing contentedly as the vibrator was turned up to its highest speed.

Twilight bit her lip to stifle a moan, looking over and watching the little one resist the growing urge to cum that she knew was mounting between her twitching hind legs.

Flurry cried out and screwed her eyes shut, feeling a bubble of intense pleasure growing and growing in her crotch. She held her breath, just like she did when trying to stave off the irresistible feeling of needing to pee she commonly felt before the familiar, embarrassing warmth of piss beginning to spread across her rear.

“I-I think I gotta go pee…”

“Don’t worry sweetie, just— Ah!” Twilight couldn’t help but moan as the orb prodded at one of her most sensitive spots. “J-Just let it go~”

With a knowing smirk, Twilight flashed her horn and gave Flurry’s tiny clit a quick flick using her magic.

Flurry let out a loud howl of pleasure, writhing and squirming atop the changing table, making its legs squeak in time with her thrusts against the vibrator buried beneath her diaper. A slight wet spot formed on her diaper as her slippery juices soaked it. Her tongue lolled from her mouth, her spit dripping down her cheek as she basked in the new experience the ‘game’ had shown her.

The sweet scent of her orgasm mixed with the smell of foal powder latent in the air, creating a pleasant aroma which only served to drive Twilight even closer to orgasm.

“W-Was that ‘cumming’, aunt Twily?”

“Yes, feels good, doesn’t it?”

“B-But I lost…” Flurry muttered, a few tears welling up in her eyes.

“Aww, don’t feel bad, a lot of fillies your age wouldn’t have lasted nearly as long for their first time! I know I didn’t!”

“R-Really?”

“Really,” Twilight stated, hopping off the change table and wiggling her flank to settle her diaper into place around her rump. The vibrator continued to work at her cunny, making her remember that she still hadn’t cum yet. Despite her lust, there was no way Flurry could go a second round for at least an hour or so.

Her praise seemed to lift Flurry’s spirits a little, bringing an exhausted smile to her face.

“Can we play that game again, aunt Twily?” she asked, feeling the afterglow fading from her body.

Twilight turned her egg down to the lowest setting and removed her from the changing table, watching her little legs stumble to find her footing after her overwhelming climax. She leaned down a planted a passionate kiss on the filly’s lips, making her heart flutter at the affection.

“Of course, sweetie. Go play with your other toys for now. I’ll get Spike to make his special pancakes for morning tea, how does that sound?” she asked.

“Yay!” she squeaked excitedly, running out of the room as quickly as her little hooves could take her. If Twilight hadn’t known better, she would never have guessed that she’d been turned into a quivering mess of pleasure just moments earlier.

Twilight smiled at her enthusiasm, a plan forming in her head as she headed for Flurry’s bedroom.

There was much to arrange.

Twilight had spent almost the whole day playing with Flurry. She’d been tempted to continue training her as quickly as possible but decided that she would let her stew in the dull aches of pleasure emanating from her cunny as a result of the stimulation of the lightly-buzzing egg tickling her slit.

At dinner time, Twilight had ensured that she added a very special ingredient to her food: a slow acting laxative which ensured that there would be no way she would be able to resist emptying herself into her padding.

The older princess smiled as she watched her specially crafted medicine slowly beginning to work its way through her body. She took mental notes as she watched Flurry squirm while she continued to play with her toys.

Flurry yawned, trying to play it off in the hopes that she wasn’t spotted and that she might squeeze out a few more minutes of playtime before bed.

Alas, Twilight wasn’t as scatterbrained as her brother. She trotted to her side with a slight smirk on her face.

“Alright, I think it’s bedtime for little princesses!”

“But Aunt Twily, I—”

“No buts!”

Flurry pouted, but slowly stood from the floor and began heading for the door. Her tummy groaned loudly as she rose, making her realize just how much she needed to mess herself.

“Good girl,” Twilight said, following her out the door and down to her bedroom.

The filly swung the door open, revealing a rather confusing scene inside. She tilted her head as she looked around the room, focusing on the four-poster bed in the center of the room.

Attached to the bed were four carefully measured ropes. They were tied to the posts of the bed and neatly laid stretched towards the center of the bed, where a large changing mat sat waiting to be used.

On the ends of each rope was a small, leather, foal-sized hoofcuff, lined with a soft pink velvet for the comfort of the wearer.

“Wh-What’s all this for, Aunt Twily?” Flurry asked.

“You’ll see. Do you want to play the secret game one more time before bed?” Twilight replied.

“Yeah!”

“Then hop on up on the changing mat and we can play!”

Flurry shyly trotted to the bedside, her sodden diaper making her waddle a little despite her efforts to hide it. She hopped up and bounced over to the laid out mat on the springy mattress, giggling as the plush bed continued to move when she plonked herself down.

Twilight chuckled and stretched her legs out with her magic while she too trotted to the bedside. Twilight strapped Flurry’s tiny forehooves into the soft embrace of the cuffs, letting her squirm a little at the slightly uncomfortable stretching.

“Th-That feels weird…” Flurry whimpered.

“It’s all a part of the game, sweetie!”

“I-If you say so…”

With a quick nod of her head, Flurry’s vibrator sprung to life once again, making the little princess’ hooves fly to her mouth to stifle her tiny squeaks of pleasure.

Climbing up on the bed with her niece, Twilight firmly pushed her back legs into place next to the laid out lower cuffs. One at a time, she carefully tightened the leather around each hoof, making sure to make the pressure noticeable - but not unbearable - for the little filly.

Flurry continued to squirm in the bindings, her need to mess mounting in her bowels and threatening to overwhelm her with each loud churn of her belly. The older mare grinned and licked her lips at the sight, knowing just how bad her cramps would be getting due to the sheer amount of spiked food she’d consumed throughout the day.

Twilight pushed lightly on her stomach. “Aw, do you need to mess, sweetie?” she asked. “Go on, you don’t have to hold back here, remember?”

Flurry took a long, deep breath, her mind fighting with her body to hold back the pressure in her body.

However, it quickly became too much for her, and she let out a long squeak of relief as her body’s need overwhelmed her will to resist the embarrassment. The seat of her diaper quickly began to expand as she filled it with a torrent of her thick mess.

Twilight grinned, “Good girl!” she cooed.

She ran her hoof down from Flurry’s belly to her expanding diaper. Her hoof flicked and pushed against the soft plastic between the filly’s legs, feeling the spreading warmth of her mush filling her nappy almost to the point of leaking.

The mare began to massage Flurry’s folds while she continued to mess herself, each slight grunt and groan of effort being rewarded with an especially firm prod over her winking clit or a slight flash of magic to gently part her folds underneath her thick padding.

Flurry began attempting to hump desperately at Twilight’s massaging hoof, struggling against the tight ropes strapped to her body. She whined as the carefully cut bindings held her firmly in place, leaving her helpless to the slow pleasure of her sitter’s skilled hooves.

Slowly, the flow of mush from her rear came to a stop, leaving her panting from the effort of forcing the laxative-induced mess out of her straining bowels.

Not wanting to leave her niece alone in her messiness, Twilight stopped massaging Flurry’s rear for a few moments to focus on letting go in her own padding. A feeling of incredible satisfaction rolled over her as the hot mush fell from her tailhole, turning the already-yellowed diaper a deep shade of brown.

Flurry giggled between her pants and moans, watching keenly as her aunt messed herself before her eyes once again.

She took a few moments to enjoy the feeling of shit spreading across her rear before returning to the task at hoof. Her eyes traced the form of the quivering filly before her, watching her writhe as she turned the intensity of the vibrators in both of their diapers.

Her mouth opened a little as arousal rushed through her body. She bit her lip firmly, trying to keep herself from becoming too lost in her pleasure. She took always took teaching seriously after all, no matter the subject.

Leaning down to her belly Twilight’s tongue flicked out of her mouth and brushed against her charge’s small teats. Flurry’s eyes opened in surprise at the feeling of the smooth tongue leaving warm trails of spit across her soft belly fur.

Suddenly, the older alicorn’s mouth latched on to her niece’s slightly exposed nipple, suckling and slurping at it as her teeth gently grabbed at the sensitive teat.

The vibrator pressed against Flurry began to push in and out of her, Twilight’s magic glowing as she began to slowly fuck the filly with the firm rubbery egg.

A long, slutty moan tore from Flurry’s throat. Her tongue lolled from her mouth, trailing her spit down her cheek at the feeling of the egg pressing deeper and deeper into her needy cunt. Twilight grinned, her niece was learning her lessons just as quickly as she did when she first started!

Twilight shifted to straddle Flurry, her diapered rear facing the filly, who gagged at the scent of it. She raised her tail and pushed her flank at Flurry’s muzzle, only to hear her gag even harder at the stench being forced into her face.

Her aunt giggled, leaving her to adjust for a moment while she humped against her face, pressing her own vibrator deeper into her cunny along with some of her own sloppy mess.

The egg pressed and poked at her sensitive walls, making her pant and moan with raw lust as she felt pleasure shoot through her body with each shift of the little orb inside her cunt.

Flurry began adjusting to the smell of the mess, pushing and grinding her muzzle against the padded flank pressed against her face.

Twilight looked over Flurry’s quivering body once more, her lustful gaze locking onto her full, yellow-tinted nappy. The urge to hear the filly squeal overwhelmed her, prompting her to flick her horn and undo the firm tapes holding the cartoonish ‘Marevelous’ diaper onto her body, relishing in the sight of it flopping from her shit-coated crotch in such an unceremoniously squishy manner. She quickly took a wet wipe from nearby and ran it over her rear, cleaning her rump of some of its brown coating.

The filly below her whimpered a complaint as the vibrator fell from her cunny, only to gasp as Twilight quickly replaced the egg with her own nimble hooves. She spread Flurry’s tight flower gently, prodding and poking at her in time with her own gentle thrusts at her niece’s muzzle.

She brought a hoof to her mouth, tasting the slight saltiness and bitterness of Flurry’s cunt. She leaned down and slid her tongue inside her, smirking as she heard a muffled squeal of pleasure through her lumpy padding.

Her tongue was quickly covered in Flurry’s fluids, sending electric spikes of ecstasy through her body at her innocent taste.

She felt her need to cum growing between her legs, her magic beginning to force the vibrator in and out of her dripping pussy with each powerful thrust against Flurry’s muzzle. Her tongue flicked in and out her mouth, tonguefucking the filly as hard as she could as she finally lost herself to the desire in her cunt.

Each snort and moan of pleasure sent another wave of stimulation through Flurry’s body, driving her closer and closer to her orgasm.

“I-I’m about to make c-cum again!” the filly squeaked, just barely audible over the squishes, crinkles, and moans that filled the air. Twilight could feel Flurry’s body instinctively milking her tongue, tightening around her and making it hard for her to drag it from her depths.

She screwed her eyes shut as she tore her tongue away for just a moment before roughly forcing it back inside Flurry’s needy hole, driving it in deeper than ever before.

A cute scream filled the air as Flurry was forced over the edge and into a sea of orgasmic pleasure. Her little clit winked as she painted Twilight’s face with a fresh coating of her hot fillycum.

Twilight let out her own high-pitched moan as she shoved the egg as deep into herself as she possibly could, reaching her own climax atop her niece. She felt her warm, slippery fluids splash against the soft plastic of her diaper as she rode her orgasm out against Flurry’s panting muzzle.

Her juices quickly overflowed the soiled padding, dribbling from her leg holes and joining the spit and sweat running down Flurry’s face and staining the pillow below.

The pair stayed locked in their ecstasy for a few minutes, floating in the afterglow of their earth-shattering orgasms.

After regaining her strength, Twilight rolled off of her charge, letting her gasp for breath after being smothered by her aunt’s soiled padding.

“Th-That was f-fun, Aunt Twily…” Flurry groaned as Twilight began undoing the cuffs binding her to the bed.

“You d-did so well!” Twilight praised, pulling her into a tight hug.

“I-I wanna play more…”

“We will, don’t you worry.”

Twilight released the filly, getting up from the bed and taking a new, thicker nighttime diaper from under the bed. She bundled up the sodden garment that still lay under Flurry’s rear and tossed it into a diaper pail nearby, giving her rump a much more thorough cleaning.

“But now I think it’s bedtime for little fillies!”

“Aww, but I wanna keep playing…” Flurry muttered.

“We can play more in the morning, okay?”

She took some foal powder and sprinkled it over the still-exhausted filly before quickly wrapping the dense padding around her, planting a quick kiss on her head as she tucked her under the sheets of the bed.

Flurry was already half asleep by the time Twilight had finished diapering her, her lucidity waxing and waning with each shuddering breath.

Twilight planted another soft kiss on her forehead before heading for the door. She quickly flicked a switch on the wall, plunging the room into darkness for just a moment before she remembered to turn on the night light beside Flurry’s bed, softly illuminating her sleeping face.

She glanced back from the doorway, watching her for a few moments before gently closing the door behind her and heading for her own bedroom.

Just because her student was done for the day, it didn’t mean she couldn’t learn more about herself.

And Twilight loved to learn.

Author's Note

Lots of fun writing this one. There isn't enough lewd love for Flurry, and I'm always glad to add to the pool.

As always, feedback is appreciated, so feel free to tell me what you think!

If you enjoy my work, consider buying me a ko-fi!