Rarity and the Dome-Headed Demon

by MagnetBolt

Rating: mature
Tags: Sunset Shimmer, Random, Rarity (EqG), Comedy, Equestria Girls, Porn, Sex, Fetish
Length: 2335

When Sunset's body changes unexpectedly, she comes to Rarity. In more ways than one.

It shouldn't have surprised Sunset that absorbing a huge amount of magic would have some lasting effects on her body. Part of her even considered the possibility that she'd end up with extra body parts, but she was expecting wings, not this. Now she needs help, private help, and Rarity is the only person who can possibly assist her in her hour of need.

Sexy need.

I decided to write this in honor of the holiday. It's just some simple, quick smut.

Trigger warning: (Strains and struggles to) contain futa Sunset Shimmer.

Published 2018-02-15 20:30:06 UTC
Last updated 2018-02-15 20:30:06 UTC

The Hard Truth

Author's Note

Happy February 15th!

This one goes out to everyone that needs fap material now that the holiday is over. I hope you all had a better time than I did. As always, thanks to everyone who keeps encouraging me, even when they encourage me to make bad decisions like, say, writing about futa Sunset Shimmer having her way with Rarity.

Might do one with AJ next, depending on how much people like this.

The Hard Truth

“Darling, I don’t see what could possibly be such a fashion emergency that it requires me to close the store,” Rarity said. “It isn’t as though someone, say, sabotaged your shampoo with nair just to make sure they wouldn’t be competition for the Spring Fling.”

“That’s a very specific example,” Sunset mumbled. “You did look great in a mohawk, though.”

“Isn’t it so nice of me not to hold it against you?”

“The way you brought it up out of nowhere sure makes it seem like you have a grudge…”

“Don’t be silly, Sunset. I wouldn’t be taking my very valuable personal time to help you out if I was holding a grudge.” She smiled, though it seemed a little tight. “I’m just a little frustrated since the holiday went rather poorly. I only got one card, and that was from Pinkie.”

“And she gives everyone cards,” Sunset muttered.

“Indeed. Thankfully, this year I remembered to point it away from my face before I opened it. I’d still be cleaning confetti out of my hair otherwise.” She sighed and turned away from Sunset, hands on her wide hips as she walked to the counter and leaned against it.

Sunset’s eyes were attracted to the sway of her walk as if by a magnetic force, and it took all her concentration to break free, even as it made her problem worse.

“So what can I help you with, darling?” Rarity sighed. “At least you’ve come to me for help, showing you have good taste.”

“Before I tell you, you have to promise to keep this a secret,” Sunset said, looking around. “I think Pinkie already suspects something, but if Dash found out, I’d never live it down. And Twilight would want to study things, and there’d be reports and pictures and tests…”

“Calm down,” Rarity said, motioning for Sunset to come closer. She put her hands on her friend’s shoulders. “I would never do anything to hurt a friend. No matter how much agony they’ve put me through in the past. No matter how many years they tormented me from the shadows and tried to ruin me, or the times they sabotaged my work, or crushed my dreams-”

“Rarity you’re kinda hurting me now.” Sunset winced, Rarity’s long nails digging into her skin even through her jacket.

“Oh, sorry. I was just thinking of something else,” Rarity said, letting her go. “The important thing is, I won’t tell anyone you’re pregnant.”

“What?! I’m not pregnant!”

“Damn, there goes my first guess,” Rarity sighed. “Well, whatever it is, it can’t be worse than that.”

“You might be surprised,” Sunset mumbled.

“So aside from a larger bust size - and don’t give me that look, I can tell you’re a growing girl - what’s the issue? Those clothes aren’t terribly old, so you can’t be growing out of them that quickly.”

“Haha, yeah… okay, so… you remember when the whole… Midnight Sparkle thing happened, and I sort of absorbed a lot of magic? And transformed?”

“You say that as if I could forget almost falling to my death through a hole in the world.”

“Part of me, um… well, part of me changed, and it hasn’t unchanged, and I could really use some help with alterations to make sure that no one notices just how much it changed.”

Rarity raised an eyebrow. “You’re going to have to be a bit more direct, darling.”

Sunset took a deep breath. “I have a penis.”

“Ah. I see.” Rarity considered. “A penis.”

“Yeah.”

“A gentleman’s sausage. A trouser snake. The sword not held. The heart-bone.”

“...I think so? We’re still talking about a cock, right?”

“Yes. I just happen to prefer more refined ways of referring to a…”

“Dick?”

“Mm.” Rarity glanced down. Come to think of it, Sunset had taken to wearing a lot of skirts lately. “Well I’ll need to see it, of course.”

“Why do you need to see it?!” Sunset put both hands over her crotch, taking a step back.

“I need to know what I’m trying to conceal, dear!” Rarity huffed. “I can’t make alterations without taking measurements, and if I’m going to be altering pants to fit whatever enigma must be removed from your form, I need them to be accurate.”

Rarity snapped her fingers, strutting towards the fitting rooms, grabbing a spool of measuring tape.

“Come along.”

Sunset hesitated, looking at the door.

“That wasn’t a suggestion,” Rarity said, her expression clearly not allowing for Sunset to contest her order.

Sunset looked at herself in the mirror. Her jacket was already hanging on a hook, leaving her feeling exposed. She glanced at Rarity’s reflection, the girl looking impatient.

“You’ve been standing there and trying to stall for almost a full minute,” Rarity said. “I do not have all day, Sunset.”

“You can’t blame me for being nervous!” Sunset said, blushing. “I’ve been trying to avoid showing anyone, and you want me to…”

“I want you to hurry up,” Rarity said. “We should be adult about this. You need clothing that fits, and I need to get some measurements to do that. It won’t even take as long as a virgin on his wedding night.”

“...What?”

“It’s a metaphor, Sunset. I’m saying it will be over quickly, and the sooner you get your skirt off, the sooner we’ll finish!” Rarity took matters into her own hands, and pulled the offending garment down.

Her cheeks burned as red as Sunset’s pubic hair.

The girl’s panties weren’t simply ill-fitting, they were stretched to the limit, bulging and straining to contain the monster within.

“Oh my…” Rarity gasped.

Sunset blushed and looked away. Rarity couldn’t do the same. The sight of the silk barely hiding the beast of a thing within. She licked her lips.

“Now, I need accurate measurements, so you have to stay still unless I tell you otherwise,” Rarity declared. She didn’t wait for Sunset to respond, tugging down the girl’s tortured panties and unleashing the kraken of cock within.

It was as long as her forearm, thick enough to make her a little scared, and so beautiful that she had to touch it. A pair of meaty balls hung below it, each as big as an apple, full to bursting with growing need.

“What are you doing?” Sunset gasped.

Rarity’s chest pressed against her back, the girl carefully stroking her rod, encouraging her monster to grow to full size.

“Mmm… Like I said, I need accurate measurements, darling,” Rarity said. “That means this-” she squeezed. Sunset’s breath caught. “Can’t just be at half-mast, as it were. Otherwise I can’t promise a perfect fit.”

Sunset nodded quickly, closing her eyes tightly as Rarity caressed her hardness.

“I can’t believe you grew this naughty thing,” Rarity admonished, wrapping her measuring tape around its base, pulling tight. “It’s more like a horse cock than a human one, and you’re making me touch such a dirty thing.”

“Y-you don’t have to-”

“Hush. I didn’t say you could talk.” Rarity pulled it tighter, and Sunset’s cock throbbed, a bead of cream bubbling from the tip. “No wonder you were having trouble keeping this a secret!”

Sunset nodded quickly.

“I’m going to have to get a closer look.”

Rarity knelt next to Sunset and put her hands on the girl’s hips, making her turn to face her, the massive shaft filling her vision. The smell of it, the manly musk filling her nostrils, clouded her head, dazing her, making her feel warm and needy.

It was a good thing she had exactly what she needed right in front of her.

She rubbed her hand along the shaft, feeling the heat radiating from it, the blood pulsing through the thick length.

“No wonder you’ve been having trouble. You came to exactly the right person.” Rarity squeezed Sunset’s sack, feeling her thick fruit. The fire-haired girl gasped in surprise, her rod twitching, a spurt of pre hitting Rarity’s cheek.

Rarity touched the offending drop, wiping it from her otherwise pristine cheek.

“Sunset! I did not give you permission to try and ruin my makeup!”

“I didn’t- you’re the one that-” Sunset caught Rarity’s gaze and quieted, unable to defend herself in front of that dominant gaze.

“Clearly if I leave you alone you’re going to end up making a terrible mess of things that I’ll have to clean up.” Rarity sighed. “I suppose there’s only one solution.”

“A cold shower?” Sunset guessed.

Rarity rolled her eyes and pulled the measuring tape tighter around the base of Sunset’s cock.

“Don’t be silly, darling. You’re going to pay me in advance for the alterations, using your little toy here.” She stood and fixed her hair. “I can’t possibly let you go without a little relief anyway.”

“Rarity, I-”

Sunset shut up as Rarity reached under her own skirt, pulling down her panties, and carefully placing them to the side, making sure to bend over enough to give the stunned girl and her extra equipment a good look at her most private place, Rarity’s lower lips pink and wet with need.

“What was that, Sunset? Because if it was you trying to say no, I’ll be very disappointed.”

Sunset was already bright red, so she just shook her head no. Really, it was impressive that she could blush at all, with how much blood was needed to keep her staff as hard as throbbing steel.

“Now, come over here. I like to watch myself in the mirror,” Rarity ordered, putting her hand on the dressing room wall to brace herself.

Sunset stepped behind Rarity, the pale girl pulling her skirt up. Sunset rubbed her length against Rarity’s shapely, firm ass, grinning despite herself.

“I have very high standards,” Rarity warned. “So I expect you to put in a real effort.”

The tip of Sunset’s arousal traced down the line of her body, teasing Rarity when it rubbed against her lower lips, their fluids mixing as she pressed lightly against the girl’s entrance.

Rarity groaned, pushing back, her excited tightness straining against the blunt shaft trying to find its way inside. For a moment she worried that it wouldn’t fit, or that it would tear her in half in the attempt.

There was an almost audible pop that resonated through her body, a shocking intrusion of mixed pain and pleasure as her body yielded, Sunset’s baby-maker forcing its way inside, Rarity’s body barely holding it, her lower lips stretched tight around the invader, the sensation making her legs weak even with only a quarter of the foot-long love rod inside her.

Rarity looked in the mirror, shivering at the sight of herself being taken, the powerful rod slowly spreading her apart.

“It feels so good…” Sunset whispered, almost drooling.

“Give it all to me,” Rarity demanded, her voice husky with need. “I want every inch inside me.”

Sunset rolled her hips, driving her red hot dragon deeper into Rarity’s slick depths, every thrust taking her deeper and deeper, Rarity making soft sounds of pleasure as the shaft pushing into her rubbed against her favorite spots over and over again.

“I’m going to-” Sunset gasped. Rarity frowned and reached back to tighten the measuring tape further.

“Not until I’m finished,” Rarity hissed, slamming her hips back into Sunset’s groin. “Don’t you know anything about customer service? You can’t leave someone unsatisfied!”

Sunset gasped as Rarity pushed her into the other wall of the tight space, riding her cock and not letting her come, keeping the tape tight, denying Sunset the relief of orgasm.

“Please, Rarity!” Sunset gasped.

“Better,” Rarity purred, as she rode harder, watching Sunset’s desperate expression in the mirror. Drips of her own sweet arousal trailed down her thighs as she edged closer to her own limit, her velvety walls gripping the shaft inside her, trying to draw it ever deeper, her body begging for her innermost chamber to be painted with Sunset’s seed.

“I’m gonna explode!” Sunset cried out, holding onto Rarity’s hips while the girl pounded against her groin. “I can’t hold it!”

Rarity finally loosened the binding on her member, taking Sunset as deep as she could and holding her there.

Sunset cried out as she came, her pulse throbbing heavily in her hardness, thick ropes of virile heat pumping into Rarity, her belly bulging as she took the huge load from Sunset’s emptying balls, Rarity squeaking and biting her lip, trying to maintain her composure even as she got off on watching the cream drip from their joining in the mirror, enjoying the sight of her body being used like a slutty toy, stretched to the limit and filled by the fuck-rod inside her.

“That felt so good…” Sunset panted, wiping sweat from her brow.

“Just remember to-” Rarity started, before Sunset pulled out, cum pouring out of her abused tunnel in a sticky white wave, running down her hips in thick drops, splattering over her socks and shoes.

Her very expensive, designer shoes.

Rarity’s eye twitched, and the pleasure of afterglow vanished in a surge of annoyance.

“Sunset!” Rarity yelled.

“Oops?” Sunset gave her a guilty smile.

“Go get the paper towels and cleaning supplies, and I will give you a lesson on post-coital etiquette while you clean my shoes.”

Sunset nodded quickly and ran out, her dripping shaft leaving a trail on the floor as she escaped Rarity’s wrath.

Rarity huffed. “I swear, the things I do for my friends.” She paused, a stray thought hitting her. “I forgot to take her measurements! Sunset, get back here!”