Sister's Mare

by jayjaejai

Rating: mature
Tags: My Little Pony: Friendship is Magic, Original Character, Cutie Mark Crusaders, Rarity, Big Macintosh, Sex, Anthro
Length: 3813

Sweetie Belle and Rarity have always wanted a child. Fortunately for them they have quite a few friends willing to help.

Sweetie Belle and Rarity have always had a...close relationship with each other, far more than most sisters would ever have. Every night they would lay in their bed sweaty, tired but completely content. That was except for one tiny thing: they both had always wanted to have foals of their own. Fortunately Apple Bloom and Scootaloo happened to know a pair of stallions who were very willing to help.

Story requested by Twilight is the best.

Sequel to Brother's Mare and Daddy's Mare. You should probably give them a read so you won't be completely lost in the story.

Cropped art by lumineko

Tags for all chapters: Lesbian, incest, Anthro
Tags for chapter 1: lezdom, face sitting
Tags for Chapter 2: Orgy, impregnation, strapon [F/f], Throat bulges, cum inflation.

Published 2016-06-19 06:50:01 UTC
Last updated 2016-06-19 06:50:01 UTC

Sisterly Love

“Aaah~n!”

Sweetie Belle moaned as Rarity licked her ever-so sensitive neck. The heat of her sister’s tongue burning a fiery path across her fur was barely matched by the warmth radiating from Rarity’s hands as they held Sweetie Belle’s wrists down. The little unicorn squirmed as Rarity sucked hickey after hickey across her body, slowly working down to nibble on her painfully hard nipple.

“Squeal for me, dear.” Rarity purred with the soft nub pressed against her lips. And squeal Sweetie Belle did. Rarity would switch back and forth, pleasuring one nipple and then the other, changing hard of soft she sucked with each pass. Sweetie Belle pushed her feet hard against the bed, trying futilely to wriggle away from the amazing pleasure she felt. Rarity knew exactly what buttons little Sweetie Belle loved to be pressed: She knew how Sweetie Bell loved it when Rarity forces her against the bed and fucks her hard, or how she’d loved having her breasts be played with. But most importantly of all Rarity knew that Sweetie Belle loves when she takes control.

Rarity pulled lips from her sister’s breasts, earning her a pained whine when the cold air brushed against Sweetie Belle’s wet nipple. Rarity giggled at the noise, she lived to tease and who better than her dearest little sister?

Slowly Rarity crawled her way upwards to the top of the bed, resting both her knees on either side of Sweetie Belle’s ears. Sweetie Belle looked up and saw Rarity’s wet pussy drip dew off her lips and down onto Sweetie Belle’s face. The fashionista looked imposing, as she stood above, her smirking face softly hidden by her massive breasts.

“Eat.” Said Rarity.

A sparkle of light poured out of Rarity’s lengthy horn before Sweetie Belle felt a force push her read right against Rarity’s pussy. The force of her sister’s face mashing against her cunt sent shivers down Rarity’s spine. She grabbed her sister by hair, curling those purple locks inside her fist, aiding her magic in forcing Sweetie Belle against her crotch. “Eat!” Rarity repeated.

Quickly Sweetie Belle jutted out her tongue and began to eat out Rarity; the salty taste of flesh filling her eager mouth. Sweetie Belle wriggled her tongue deep inside Rarity, eliciting a lovely moan and a wiggle of appreciation from the older mare. Rarity released her magical hold on Sweetie Belle’s head, slowly lowering it to the ground, before grinding her cunt hard against her sister’s face.

“Oh, yes!” Rarity moaned as she humped away. Sweetie Belle felt like she was just a toy for Rarity to get her rocks off, and absolutely nothing turned her on more to be her sister’s sex toy. Sweetie Belle opened her mouth and lapped away with her tongue. Rarity stopped her humping when she felt the tongue enter her and immediately started bouncing up and down, penetrating herself deeper and deeper against the wriggly appendage.

Rarity gripped her sister’s horn in her hand, earning the pleasure of having Sweetie Belle’s moan reverberating through her body. With every writhe Rarity would jerk Sweetie Belle’s hard nub; thumbing the tip while jerking the solid shaft. Sparks of magic squirted out with every jerk, coating the wooden headboard. Sweetie Belle was lost in Rarity’s expert fingers, and she knew that she had to pay back her sister.

Sweetie Belle dived deep, trying to taste farther into Rarity’s tight pussy. She could feel her sister slowly approach orgasm; Rarity’s walls were contracting hard against her tongue all while grinding ever more violently against her face. Sweetie Belle quickly wrapped her lips against Rarity’s clit and sucked as hard she could, pushing the element of generosity over the edge.

Arching her back and letting out a deep moan, Rarity squeezed her thighs against Sweetie Belle’s head, all while humping the little unicorn’s face. Sweetie Belle felt Rarity’s pussy juice spread across her face, into her nose and deep down her throat. Her entire world smelled of Rarity’s orgasm.

Rarity slowed down her thrusting and slowly let the pressure off of her sister’s head, before slinking down beside Sweetie Belle. The two laid there gasping for air, enjoying the warm air fill their lungs and kiss their skin. Rarity rolled over to her side before pulling Sweetie Belle into tight hug, before giving Sweetie Belle a kiss on her forehead.

“Feeling better now, Rarity?” Sweetie Belle mumbled into Rarity’s chest. Rarity giggled at the question. “Absolutely. “

Sweetie Belle hoped that the joke would make the next question slightly less awkward. “So…about that thing you talked about in the morning. About us starting a family….were you serious about that?”

Rarity pulled her sister closer. “I was and don’t worry, it might seem a bit crazy but I know that we’re ready for it.”

“But how?”

Rarity smiled as knew at least two separate couples who would…lend a hand.

“Don’t you worry about that. I have a plan”

Fun for the Entire Family

Apple Bloom and Scootaloo couldn’t help but blush. Rarity was the only pony that happened to know about their…illicit relationships. Rarity was always good at sussing out even the dirtiest of secrets, and Apple Bloom’s midnight rendezvous with Big Mac and Scootaloo’s “alone time” with her father were no exception. The reveal was also helped by Rarity noticing the slight bump growing in their bellies, and after a few questions the two came clean. So while Apple Bloom and Scootaloo were embarrassed by Rarity’s knowledge, the question she had just asked them was fare more embarrassing.

“Uh, Rarity…” Scootaloo began, “what exactly do you mean that you want us to help you start a family?” Apple Bloom began squirming in her chair as the implication of what was being discussed played out in her mind.

“I’m telling you Scootaloo, I would like Big Mac and Eclipse to help Sweetie Belle and I in starting our own little family.” Rarity exclaimed. “I mean, they truly are the only ponies out there who could help in our…somewhat taboo relationship.”

Apple Bloom slowly nodded. Both she and Scootaloo were surprised to find out that Sweetie Belle and Rarity were also having a secret incestual affair. And what she was saying did kind of make sense: Rarity could obviously not impregnate Sweetie Belle on her own, and Big Mac and Eclipse wouldn’t balk at the somewhat unusual idea of fathering the foals of the two sisters.

“Besides, you two could even be there!” Rarity giddily said, “It isn’t like you two haven’t done something like this before, right Scootaloo?”

Scootaloo squeaked as Apple Bloom glared at her. “You told her about that!” Apple Bloom yelled.

“I’m sorry, it just kind of came out!” Scootaloo said, trying to defend herself.

“Oh don’t you have to start Apple Bloom, I think the idea is pretty erotic myself. Just imagine how much more fun it would be! I’ve always wanted to see how you two look like when you cum” Rarity said with a smirk.

Apple Bloom and Scootaloo could feel themselves get wet at the idea. Their foursome a few months ago had spurned on quite a few more sweaty nights for all four of them. The idea of adding another pair to their nightly fun was something that had interested them all, and they were curious seeing Rarity and Sweetie Belle in action. Plus there was something hot about seeing their boyfriends fuck the two unicorns hard and cumming deep inside.

“So,” Apple Bloom started, “When do you want to….do this?”

Rarity smiled at the Earth pony.

“Soon.”

Big Mac and Eclipse couldn’t help but feel a little bit nervous. They both knew that Sweetie Belle and Rarity wanted kids, but the idea that they’d be the ones doing the deed made the task feel monumental.

Fortunately for the two Rarity and Sweetie Belle were doing their best to entice them. Sweetie Belle was sitting in her big sister’s lap, hungrily making out with Rarity. Rarity had one of her hands squeezing and rubbing Sweetie Belle’s breast, while her other was buried into Sweetie Belle’s pussy. Big Mac and Eclipse could feel themselves get harder and harder as they watched Rarity roll her fingers around Sweetie Belle’s clit. Rivers of arousal poured from the two sisters, dampening the bed they were sitting on.

With hunger in their eyes Big Mac and Eclipse approached the two unicorns, fully prepared to have their way with them. Big Mac pulled Sweetie Belle close to him before giving her a deep kiss while Rarity quickly got down on her knees and ran her tongue around Eclipse’s warm head. The fashionista smoothly slipped his cock passed her lips, humming as it reached deeper and deeper into her throat.

Sweetie Belle and Big Mac pawed away at each other, both pouring as much passion as they could into their kiss. Big Mac ran his large hands across the swell of Sweetie Belle’s back until coming to a stop at by her firm tush. Big Mac squeezed her ass hard, his rough hands digging deep into Sweetie Belle’s flesh. Sweetie Belle could barely control her lust and quickly sank to her knees, wanting nothing more than to please that large penis swinging between Big Mac’s legs. The unicorn wrapped her pillowy breasts around the base of Big Mac’s cock, rubbing them up and down his length.

Scootaloo and Apple Bloom could barely contain themselves. The two were originally content to watch their boyfriends fuck Rarity and Sweetie Belle hard, but just the sight of Eclipse plunging his dick deep into Rarity’s throat and Sweetie Belle milking huge dollops of precum out of Big Mac with her breasts was enough to turn on the two crusaders. Apple Bloom reached her hand down to her nipple and slowly rubbed and pinched the hard nub, biting her lower lip as she watched Big Mac use Sweetie Belle’s breasts like a sex toy. Scootaloo saw how utterly turned on her friend was and decided to help; she quickly reached her hand down towards Apple Bloom’s cunt, and began plunging her fingers inside the yellow mare.

Apple Bloom arched her back at the pleasurable intrusion, whimpering as Scootaloo’s fingers pulled out before sliding back in. Apple Bloom grabbed Scootaloo’s head and drew the pegasus in for a kiss, all while slipping her hand in between Scootaloo’s thighs. While the sound of Eclipse thrusting into Rarity’s throat and Big Macintosh fucking Sweetie Belle’s tits dominated the room, the muffled moans of the two mares could still clearly be heard.

Eclipse could feel himself get closer to the brink of orgasm, and Rarity was fully aware of it. Her tongue swirled and her lips pressed hard against his shaft as he slammed his cock down her throat, trying to coax out the cum out of his dick. The tightness he felt as he pushed into her neck was evident as the outline of his head bulged out against her throat. Big Macintosh was just as close as Eclipse was; his dick slid easily in between Sweetie Belle’s breasts, now soaked wet with his precum. Sweetie Belle reached her mouth down and sucked on the bright pink tip, causing him to grab her head and push down against his dick.

The two stallions weren’t able to last for too long inside the sisters’ warm mouths before cumming. Fountains of white spurted out and was quickly swallowed by the two horny unicorns; whatever didn’t end up sliding into their bellies leaked out from the sides of their lips and dribbled down their chins. Scootaloo and Apple Bloom soon came as well: seeing their boyfriends’ balls tighten as the spilled their loads inside Rarity and Sweetie Belle pushed them just over the edge.

Big Macintosh and Eclipse rode out their climax before letting their cocks slip out from Rarity and Sweetie Belle. The six of them needed a quick breather just before they got on to the most important part of the night’s festivities. A few quiet minutes passed before it became obvious that the stallions were ready to go, their cocks slick with saliva and pre while being as rock solid as before their orgasm.

Rarity climbed onto the bed on all fours, wiggling her derriere seductively at Eclipse. Sweetie Belle on the other hand laid on her back and spread her legs before using her fingers to pry open her snatch, giving Big Macintosh a full view of her tight pink pussy. The two stallions dived in immediately: Eclipse grasped Rarity’s hips and shoved himself into her while Big Mac lifted Sweetie Belle’s legs over his shoulder and gave one solid thrust. They both slid in easily; both mares were so wet at the thought of being fucked hard.

Rarity groaned as she felt that delightful fullness every time Eclipse pushed in, making sure to clamp down hard when he reached balls deep. Sweetie Belle on the other hand could barely even think as Big Macintosh hammered away at her pussy. While Eclipse’s thrusts were long and deep Big Mac’s were fast and shallow, leaving the little unicorn breathless. Regardless all four of them were lost in a haze of lust; their bodies pushing hard against each other, trying to derive as much pleasure as they could.

Scootaloo and Apple Bloom, both horny as fuck watching the foursome happening in front of them, knew they needed their own release. Scootaloo pushed Apple Bloom onto her back and immediately straddled her face, rubbing her pussy against the earth pony’s snout. Apple Bloom licked and sucked at Scootaloo’s lips, filling her mouth with Scootaloo’s juices. Scootaloo dived her head down in between Apple Bloom’s legs, lapping just as hard on Apple Bloom’s clit as Apple Bloom was sucking on hers.

The sound of their marefriends’ lesbian play reached Big Mac and Eclipse’s ears, spurning them on to thrust harder and faster. Rarity and Sweetie Belle could barely contain their moans as their pussies filled with the stallion’s massive cocks. Eclipse bit his lower lip as he felt himself bottom out inside Rarity, his cock hitting the very deepest part of her cunt. Rarity pulled a pillow up to her face to muffle her squeal as every nerve in her vagina cried out in pleasure. Sweetie Belle could not stop gasping as every slam of Big Mac’s hips against hers. She had never been fucked so hard before and her mind could not grasp how amazing everything was.

Both Rarity and Sweetie Belle came at the same time, squeezing hard against Big Mac and Eclipse. The feeling of those wet folds clamping down against their shafts was just what the two stallions needed to cum. They both slammed themselves as deep as they could before spilling pint after pint of cum into the two unicorns. Quickly the bellies of Rarity and Sweetie Belle began to bulge and inflate, as the massive torrent of semen took up every space inside their tiny bodies. Larger and larger they grew as Eclipse and Big Mac spurted out few more loads of cum; their cocks acting as plugs keeping their semen locked up inside the mares.

Big Mac and Eclipse went on for longer than anyone thought possible before they both slowly came down from their high. The two kept their cocks still deep inside their respective mares, admiring the pretty bulges they had left. Rarity and Sweetie Belle bot reached down and gave the bloat a happy rub, knowing that their dream of finally starting a family was coming to fruition.

The four were quite content to lie there before the wail of Scootaloo and Apple Bloom cumming snapped them out of their reverie. They all turned to watch as Apple Bloom squeezed her thighs against Scootaloo’s head while Scootaloo grinded her cunt against Apple Bloom’s face. Big Macintosh and Eclipse knew that their night of fucking was not yet over.

Eclipse and Big Mac pulled out from their respective mares as rivers of cum poured out Rarity and Sweetie Belle’s well fucked cunts. Eclipse pulled Scootaloo off of Apple Bloom before pushing her on to her back and ramming inside her warm pussy. Big Macintosh however lifted the panting Apple Bloom, pushed her against a wall and impaled her on his cock. Scootaloo and Apple Bloom yelled out in delight, their pussies were still sensitive after their orgasm and the welcome intrusion felt mind numbingly amazing.

Rarity, happy from being so completely filled up as well as seeing her friends lose themselves to their lusts, decided to have her own fun with her little sister. Reaching into a bedside drawer she pulled out a double ended dildo and dark purple straps connected to a metal o ring. She shoved the dildo half way through the ring before it got stuck in the middle; she gave a few tugs to make sure that it was extra tight and secure. She slipped her feet through the straps before pulling it up, allowing on end of the dildo to plunge itself deep into her cunt. Humming to herself at the lovely feeling she crawled over to Sweetie Belle.

Sweetie Belle was laying on her back with her eyes closed, floating in the lovely afterglow of orgasm. That was until she felt something hard rub itself up and down her lips. Sweetie Belle open to see Rarity grinning at her, rubbing the dildo’s head against her opening. Sweetie Belle had a second to brace herself as Rarity pushed herself deep inside Sweetie Belle’s pussy. The two of them cried as Rarity slammed her hips against Sweetie Belle, the dildo pushing hard against the both of them.

All three couples became focus on their respective partners. Big Macintosh lifted Apple Bloom upwards against the wall with every focused thrust. She wrapped her arms around his wide barrel chest and cried out with her head buried into his shoulder. The feeling of being raised before slammed down against Big Macintosh’s massive cock caused Apple Bloom lose whatever grasp on reality she had as she slipped into a haze of lust.

Scootaloo whinnied as felt her father hilt himself inside her pussy, kissing her deepest spots with his head. Eclipse had fucked her many times but he rarely fucked her this hard; every stroke of his hips would reverberate through Scootaloo’s lithe frame. Scootaloo’s toes curled as she felt Eclipse’s crotch ram against her clit, sending electrifying jolts throughout her body.

Rarity thrusted faster and faster, stretching out her sister’s well fucked pussy. Sweetie Belle reached down and rubbed her clit as Rarity pushed in deep and wiggled her hips. The dildo shook and shimmied inside both of them, stirring against their soft walls. The two could even feel the dildo push the cum deeper inside their pussies, guaranteeing a pregnancy.

All six could barely contain their moans as they all came. Apple Bloom and Scootaloo felt that familiar fullness as they were filled up with more and more cum. Big Mac and Eclipse could feel every last bit of semen in their balls pour deep inside their mares, inflating them with their white love. Rarity and Sweetie Belle both arched their backs as they clamped down against the dildo, before they quickly collapsed on to the bed.

Rarity and Sweetie Belle were soon joined by the rest of the gang as they all clamoured on to the large bed. An entire night of fucking had left them all thoroughly tired, but deeply contented. Rarity pulled the strap on out of her before tossing it away, giggling as the cool air tickled her open hole. Out of all of them the two unicorns were the giddiest; they knew that with all that cum swirling inside them that they were bound to seeing their own foals very, very soon.

With all of them giving each other a few “good nights”, the group of friends soon fell into a deep sleep.

~ A few months later ~

Scootaloo, Apple Bloom and Sweetie Belle all gasped in unison as they felt their respective lovers piston in and out of them. All three laid beside each other on the bed, their faces barely inches apart; the sound of each other’s breathing echoing in their ears. All three shared a swollen belly, filled with a little bundle of joy that would be joining them in a few more months. Big Mac and Eclipse watched in awe as with every push the swollen bellies of their mares swayed, alongside their swollen breasts. Rarity on the other hand, who was just as far along as Sweetie Belle was, simply cooed as her belly rubbed up against her sister with every thrust of her strap on.

Apple Bloom grasped Scootaloo and Sweetie Belle’s hands, giving them a squeeze as she felt her orgasm build up. The two cutie mark crusaders squeezed back as they felt themselves approach their own. All three expectant mothers moaned as the wave of pleasure crashed over them, their pussies clamping down hard, trying to coax as much pleasure as they could. Big Macintosh, Eclipse and Rarity could barely contain themselves before soon the approached their own orgasms. Pints of cum poured out filling up Apple Bloom and Scootaloo to the brim before pouring out of their cunts. The feeling of being filled with warm sperm before trickling down their legs and on to the floor knocked the two even further into their sexual exhaustion.

All six of them collapsed onto the bed, cuddling up to each other for comfort and warmth. The four pregnant mares were delirious with delight as they all relaxed in each other’s arms, feeling more relaxed than they have in weeks. The trio of couples had made excuses to explain away the considerable baby bump they were sporting: Apple Bloom and Scootaloo claimed that had some drunken fun with a pair of stallions from another town. Sweetie Belle and Rarity explained that they each wanted some foals so they went out and received some help from an anonymous donor. None of them enjoyed that they’d have to live a lie, but none of them wanted the fallout that would happen if the truth slipped out.

It was tough for the first little while but the six of them made a pledge to have these “stress relieving” sessions as often as possible. While it didn’t do much for the daily burdens of carrying a foal, it did plenty to strengthen the bond between them all. They knew that many would not have accepted their…lifestyle so easily; but here, tangled up in a giant cuddle ball, they knew that at least they could always rely on each other for the support they needed.

They also knew that they could rely on each other for a damn good lay whenever they needed too.