Beloved Sister

by Shrinky Frod

Rating: mature
Tags: Profanity, Non-consensual, Violence, Death, Sweetie Belle, Princess Luna, Gore, My Little Pony: Friendship is Magic, Dark, Fetish, Comedy, Rarity, Porn, Sex
Length: 3251

Rarity and Sweetie Belle are on trial for heinous, monstrous acts against nature! What madness could have brought them to this point?

Rarity and Sweetie Belle, two of the prettiest, most beloved mares in Ponyville. And, secretly, far more than mere sisters.

But when their secret gets out, they find themselves before Luna’s night court, facing judgment and sentencing - but why are the guard’s spears tipped with dildos?

Story originally written as an entry into the April 2019 Incest is Wincest group contest, “Siblings!” Cover art by Rodrigues404, sourced in image.

CW/TW: Nightmare Sex, Non-Con, All the Way Through, Extremely Anatomically Dubious Activities, F/F Incest, F/F/Futa, Cunnilingus, Gangbang, Mind breaking, Unbirthing, Drowning, Cumflation, Ridiculously bad theespeak, and the madness of 3 AM inspiration.

Doh! Pre-reading and editing by Snow Quill!

Now with ko-fi link for those of you suitably twisted.

Published 2019-04-18 00:50:01 UTC
Last updated 2019-04-18 00:50:01 UTC

Love's Trials

Author's Note

I... yeah, I got nothin'. My brainspace can be fucked up sometimes. As the illustrious Cocknie Thug has been known to say, 'dead dove, do not eat.'

Enjoy!

Love's Trials

Chains rattled as Rarity and Sweetie Belle were led into the throne room. The two mares kept their heads down, helped by the iron bits in their teeth that were chained to the black leather harnesses they wore. Those same harnesses criss-crossed their bodies, accentuating their flanks, holding their docks up high so that they were constantly exposed to the prying, leering eyes of the gathered witnesses. Occasionally shame would force one of them to stop, trying desperately to lower her tail, but any such attempts were punished as the guards leading them through would jab the slacker mercilessly with the rigid vibrators on the tips of their spears.

As such, there was nothing either mare could do but glance at the crowd and see who in it they could recognize.

There was Fancy Pants, draped over Fleur’s back. Twilight Sparkle was sitting next to Spike, reading a Power Ponies comic as her draconic companion watched the shameful display of his beloved going on not a dozen feet away. Applejack adjusted her bow while Apple Bloom tipped her hat down to avoid Sweetie’s eyes. Worst of all, their parents were there, Hondo with his trademark visor tipped down to block his two daughters from sight, Cookie Crumbles dressed in a voluminous black gown and gauzy veil. The veil couldn’t hide the contemptuous sneer that curled her lip, bushy mustache rising on one side.

And then, of course, there was Princess Luna, sitting imperiously in the throne, garbed in black robe and a powdered wig. She looked down at the two mares, and there was naught but disgust on her face.

Finally, the guards reached their marks, and looped the chains attaching the two mares at the bridles through heavy shackles in the floor. In unison, the guards slammed the butts of their spears against the ground, dildo-tips wobbling majestically as the collective murmur of the crowd died down.

”Lady Rarity of Ponyville!” Princess Luna roared out in the Royal Canterlot Voice, rattling the ancient stone of the palace. ”Thou’rt accused of monstrous and criminal lewdness outside the bounds of nature and the laws of Ourself and our Radiant Sister! Thou’rt accused of allowing this trollop to engage in unnatural acts of lust and carnality unbefitting any tawdry mare of the evening, let alone a decorated hero of the land! How dost thou plead?”

“Guilty,” Rarity admitted through the bit in her teeth. There were gasps and hushed whispers through the crowd. Hondo swooned, hoof to brow as his eldest daughter admitted her crimes.

”And thou, oh Sweetie Belle of Ponyville! Thou’rt accused of initiating this madness! Of placing thine visage between thy sister’s voluptuous thighs and partaking of her sweet nectar! Of dredging thy family’s name through the muck of scandal and shame! Of disregarding the sororal bonds that tie the two of thee together through blood and birth in the name of carnal pleasure! Of….” At this, Luna adjusted the pince-nez she wore and looked at the court documents before her with disdain. A sneer curled her muzzle, white teeth sparkling between blue lips. ”Of performing extra chores to raise the funds to purchase a bouquet of roses for thine incestuous paramour!”

“The horror, the horror!” Roseluck cried out from the back of the crowd, she and her sisters swooning away into faints.

”Hypocritical bitches,” Rarity thought to herself.

”How dost thou plead, Sweetie Belle of Ponyville?”

“Guilty!” Sweetie shouted around the bit, glaring up at the Princess. “An’ I’m not thorry!”

Twilight’s eyes widened as she looked up from her Lusty Lulu comic book, then dropped back down to it as her hoof drifted down between her legs.

”So be it! Sweetie Belle of Ponyville, for thine unrepentant depravity, thou’rt sentenced to public execution, to be carried out after the fulfillment of thine last request! What is it that would bring balm to your perverted and degenerate soul before it is sent screaming to Tartarus?”

Sweetie swallowed hard as the gravity of her situation came down like the blade of a guillotine.

“Printheth, no!” Rarity sobbed as the sentence was pronounced. “The’s only a filly, I thould be the one!”

”Do not question the judgment of thine Princess!” Luna roared, lightning crackling through the nighttime sky a fraction of an instant before it was split with a peal of thunder.

Rarity cowered, sobbing again as her sister gazed on her for what she was realizing would likely be the last time.

“Let me thow everypony exactly how much I love her,” Sweetie said, “before you kill me for it.”

”As depraved a last request as We have ever received!” Luna bellowed. ”As such, it is fitting for thy crimes! So be it! Guards, allow this harlot her final wish, and then her sentence is to be carried out!”

The guards undid the bit and bridle, bodily lifting Sweetie with their magic and placing her behind her sister. The filly nosed Rarity’s tail to the side, looking on the orifice that had gotten them both into all this trouble in the first place. She leaned in, kissing Rarity’s nether-lips passionately before she began to trace her tongue around the sensitive flesh.

Rarity moaned as Sweetie tenderly tongued her most intimate regions. Tears streamed down her cheeks as her little sister licked, nibbled, and suckled with skill no filly her age should rightly have had. The same skill that had left Rarity addicted to her young lover’s oral attentions, just like her passion for life had bound their hearts and souls together against all logic and sanity. Her forelegs buckled, thrusting her rump up and back into Sweetie’s muzzle.

The filly redoubled her efforts, devouring Rarity’s juices and leaving her muzzle soaked in them. Pale green eyes darted back and forth, watching as the witnesses to their trial began to respond to the display. Stallions dropped from their sheaths, mares fanned themselves with their tails, only Princess Luna, enrobed and enthroned, seemed unaffected. Instead, the Princess, glared down at them imperiously.

Rarity’s clitoris winked against Sweetie’s muzzle, wet fur stimulating it further. Suddenly, Sweetie pulled her face back and bit down on the sensitive little nub, making her elder sister scream with pleasure. The throne room echoed with Rarity’s wordless shrieks, almost as loud as the Princess had been when speaking before and vastly higher pitched. Sweetie drank down Rarity’s essence, the excess pouring down her chest and pooling on the floor.

Luna stood from her throne and leaped down to the floor, casting off her robe mid-air. Her wings sprang wide, carrying her past the debauched display and revealing a massive, rigid horsecock between her hindquarters, mottled black and blue and as long as one of the Princess’ legs, thick as one of Big Mac’s hooves.

Luna landed thunderously behind Sweetie Belle, the gust created raising the filly’s tail to fully expose her slick, swollen sex.

”And now, thou profane paramour, thy sentence! Let the organs that so consumed thy lusts consume as well thine flesh!”

With that, Luna thrust forward, the throbbing stallion between her legs driving itself against Sweetie’s own tight sex. Rarity cried out again, another orgasm washing over her as Sweetie’s face was pushed into her hard enough to begin stretching her passage around Sweetie’s head.

Sweetie tried to cry out as her body stretched out around Luna’s cock, but Rarity’s body around her muzzle silenced her. All she could do was whimper and cry as she was violated, Luna’s flat head bulging out against each surface of Sweetie’s body, quickly striking the filly’s cervix and forcing her deeper inside of Rarity’s dripping cunt.

Sweetie barely closed her eyes before they were pushed into that impossibly tight passage. She slid in deeper as Luna dug in her hooves and drove inexorably forward, determined to hilt herself in the filly regardless of what organs might object to such treatment. When Sweetie’s horn butted up against Rarity’s anus, Luna simply continued. For a brief, agonizing moment, Sweetie's cervix stretched out to admit the intruding phallus, before she felt an instant of relief while Luna drove through to the rear of her uterus. Then her head tipped back, blocked from going further by her horn.

By now, Sweetie was drunk from the lack of air. She could imagine how she must look, Rarity’s vagina swelling obscenely around her, fighting to constrict back into its natural dimensions at any cost. She could feel the powerful muscles clenching around her throat, strangling her in the hot, wet, abyssal darkness she’d been thrust into. Her neck continued to bend, Luna’s unnatural strength proving stronger than either mare’s ability to resist, and then Sweetie was dimly aware of a series of popping cracks as her spine folded back on itself, her head slapping back flush against her neck.

There was a brief flash of light as Luna pulled back, but then the alicorn sank herself into Sweetie and Rarity once again. Sweetie felt something inside of her tear, felt her insides coil and wrap around Luna’s member, the flared cock rattling her ribs and displacing organs.

Sweetie’s limp body folded and slid deeper into her elder sister, crushed into Rarity’s vagina. She knew that there was no way she could have survived everything she’d endured thus far, no possible way that she could be staring at the fleshy, red, pulsing, throbbing walls her tongue had desperately sought after so many times.

Then, just as Luna pulled out to thrust forward again, Sweetie realized that the only way she could be seeing anything was if the Princess’ magic was active.

Her sentence was already complete, but Luna was keeping her alive long enough to experience the entire process.

Sweetie struggled as well as she could with the few muscles she could still control with her broken neck, and somehow managed to work her head back into a somewhat natural position, her horn pointing directly ahead as Luna sank herself deeper into the dying filly, now rutting the elder sister whose flesh fought futilely against the perverted reversal of nature going on. Sweetie’s horn began to spread Rarity’s cervix, and Luna began to pound against that impossible barrier hard and fast. Each time she slid back, Sweetie’s face twisted a little further, muzzle and horn slowly stretching the tunnel of muscle and cartilage that had never been intended to take anything so large.

The endless vibrations of Rarity’s body around her told her that her sister must be screaming, but the mare’s body prevented her from actually hearing anything but the rush of blood and further tearing of flesh past its natural limits. Sweetie’s head popped through into Rarity’s uterus, and the mare’s cervix tightened desperately, strangling Sweetie further as Luna’s spell slowly began to fade. Sparkles formed at the edges of Sweetie’s perception as her body sang out in orgasm one final time.

Luna pulled back, nearly all the way, only Sweetie’s horn and muzzle left to be crushed by Rarity’s vice-like walls, and then slammed herself home. Her cock slid up through the filly’s destroyed body, through Rarity’s own distended cunt, and finally drove Sweetie entirely into Rarity’s depths. The cock continued forward, slamming against the rear walls of Rarity’s body, popping briefly out of Sweetie’s mouth. Massive blue balls pulled up close to Luna’s body, and began to flood Rarity’s body with bitter, fertile seed.

Luna withdrew until her flare sealed against Rarity’s cervix, the force of her orgasm pushing Sweetie’s body off of her. As her magic faded, Sweetie’s dying body inhaled some of the flood of semen, the little filly finally drowning inside the sister she’d thrown her life away to love.

Rarity had stopped screaming and sobbing when she felt Sweetie’s hooves pass through her cervix. Now, tears streamed silently down her face as she felt her belly stretch and swell with gallons of the Princess of the Night’s seed, felt her sister and lover cease to twitch and spasm inside of her, felt the filly’s body begin floating in the pool of semen she was being filled with.

The worst part, her body still trembled with the endless stream of orgasms she’d endured during the entire process.

Luna’s shaft finally stopped spurting, and she pulled it out with agonizing slowness, Rarity’s inner walls somehow tightening enough as they were evacuated that they kept the vast majority of Luna’s seed inside of her to inevitably fill her belly with royal bastards, if she was allowed to live that long.

Luna walked around in front of Rarity and took the mare’s purple mane in her magic. She wrapped it around her semen-soaked shaft, wiping it clean before slapping Rarity with the softening member. Then, she continued back up to her throne, retrieving her robe, still wearing the powdered judge’s wig. As she sat, the guards thumped their spears against the hall again, the dildos on the end bobbing back and forth obscenely, now seemingly slick from use.

“Lady Rarity, the time has come to pronounce your sentence.”

Rarity didn’t even try to raise her head, let alone stand. What more could Luna do to her now?

”For the crime of accepting thy sister’s foalish affections, for failing to armor thyself against these unnatural lusts, thou shouldst be put to death much as thy sibling was.

That was it then. She could only hope for something merciful, such as the headsmare’s blade, or perhaps the guillotine. Even being drawn and quartered would -

”However!”

However? Rarity’s stomach lurched as the horrifying possibilities of living dawned upon her.

”In light of thy faithful service to the nation, and to thy princesses, We are inclined to show mercy.”

No.

”Rather than execution, as thy sister so richly deserved, thou shalt be sentenced to bear foals that might be raised to seek their pleasure outside of their kinfolk!”

No.

”From this point forward, the Lady Rarity is no more! Instead, thou’rt now Belle, Broodmare of the Royal Sisters! So have we ruled!”

Luna raised her hoof and slammed it against the marble floor like a gavel, but Rarity couldn’t hear a thing. Nor did she see the mass of stallions moving forward, mounting her in every way they could, Spike taking her pussy and ass, Shining Armor filling her throat, Fancy Pants and Big Mac crooking her legs so that they could masturbate themselves with her pasterns, stallion after stallion after stallion, an unending line of stallions, each eager to pump their own balls dry and add to the intermingled pool of seed where her sister still floated.

The sister she would never see again, until death’s mercy claimed her.

She noticed as Hayseed Turnip-Truck came up to her and, noting that all her holes were already occupied, shrugged and stood on her shoulders. The blunt tip of his musky shaft pressed against Rarity’s ear. As she felt the plates of her skull begin to give way, his cock entering in a way nature had never intended, Rarity cried out around Shining Armor’s throbbing stallionhood, her final word gurgling through the seed he pumped down her gullet.

”NOOOOOOOOO-

“-OOOOOO!” Rarity woke screaming, clutching at her belly, finding it taut and toned as always. Her hooves flew to her face next, feeling for the holes that had been on the verge of being ripped into it. She could smell the stench of sex, her sheets were….

Her sheets were soaked.

Rarity shivered as she began to realize that it had been a dream. Then she heard tiny hooves pounding down the hallway, and Sweetie’s high-pitched shriek. Rarity leaped out of bed, heaving her bedroom door open just in time for the filly to barrel through and leap into her arms, clutching Rarity as she sobbed.

“I love you, I’m sorry, I’m so sorry, I love you, I love you Rarity!” She continued on an endless loop of apologies and declarations of love. Rarity stroked the filly’s mane, kissing her all over her face, relief washing through her as they both started to come down from the terror and adrenaline that had woken them each.

“Shh, it’s okay Sweetie, it was just a bad dream,” Rarity crooned, hugging her tightly all the same to convince herself that this was the reality.

“Princess Luna was there though!” Sweetie sobbed. “She only made it worse!”

“It probably wasn’t the real Princess Luna then, was it? Do you really think she’d do anything to hurt you?”

“I-if she knew, m-maybe?”

“There is no way that she would do anything to hurt anypony,” Rarity declared, wishing she felt as confident as she sounded saying that.

“O-okay. I’m sorry I woke you up, Rarity.”

“I think I had the same dream, Sweetie, I woke myself up. Do you think you can get back to sleep?” Rarity asked her, setting her back down.

“Uhm… not, not really,” Sweetie admitted, drawing a circle in the carpet with her hoof. “I uhm… I guess I kinda got worked up about it?” She looked up sheepishly, her tail swaying back and forth and fanning her filly’s scent through Rarity’s room.

“Oh you did, did you?” Rarity chuckled. “Well… the good news is, I apparently did myself, so I already need to change my sheets. Do you want your big sister to help you unwind?”

“Uh-huh! Just uhm… no toys, tonight. I don’t want anything inside me.” Sweetie shuddered and shook her head at the thought.

“No toys,” Rarity promised, kissing Sweetie on the lips before picking her up in her magic to carry her over to the bed. She laid the filly out on her back and climbed up with her, their lips meeting in another passionate kiss as each reassured themselves that the other was there, was all right, was whole and loved and not going to leave them.

As they made out, Rarity heard the faint ‘whoosh’ of a magical scroll coming through her window. She looked over just in time to see it pop into material form, and promptly unrolled it.

Lady Rarity, my very dear friend,

Kindly CEASE eating leftover Chineighse takeout with your sister before bed!

I assure you, by the time I found your dream, your sister was already shoulders-deep in trouble, as it were. I confess that I was too shocked to intervene at that point. No such thing would ever cross my mind, nor would I indulge it if it had!

Most sincerely,
Princess Luna Selene, Dianic Regent, Ruler of the Dream Realm

P.S.: You and your sister are adorable. Might I convince the two of you to entertain the idea of a ‘double-date’ some time, here at the castle? Pray consider it, and send your response on the morrow. I have ensured that your dreams shall be pleasant for the rest of the night.

“See?” Rarity smiled down at her sister. “I told you she wasn’t part of that nasty old nightmare.”

“D-double date?” Sweetie squeaked. “At the palace? With who?”

“With whom, darling. We’ll talk about that tomorrow. For tonight, I want my favorite little filly to sing,” Rarity purred, sliding Sweetie up on the bed and planting her own muzzle between the filly’s legs.

Royal invitations could wait. For tonight, all she wanted was right in front of her.