Overwhelming Lust

by The Abyss

Rating: mature
Tags: Twilight Sparkle, Slice of Life, Alternate Universe, Porn, My Little Pony: Friendship is Magic, Princess Cadance, Other, Shining Armor, Sex
Length: 3608

In a world where everypony but Twilight and a few others is a constantly-aroused futanari, it is now her duty to be the town's slut, a task that she accepts with an open mind and spread legs.

Twilight has always looked forward to going to Princess Celestia's School for Gifted Unicorns, but things have changed. Now that she's of proper age, she can be fucked by whoever wants to do her and it doesn't matter if they're in the street or in the middle of a lecture. In a world where everybody but her and a few other mares is a constantly-aroused futanari, it is now up to Twilight to get anypony off, anywhere.

Wondering how many times she'd be brought to orgasm, Twilight begins her new life with an open mind and spread legs.

Contains: Incest, Public Use, Glory Hole, Futa, Threesomes, Creampies, R63'd Stallions, and a very horny Twilight.

Set before Season 1.
Cover art by neighday.

Published 2016-03-15 19:10:02 UTC
Last updated 2016-03-15 19:10:02 UTC

Chapter 1

Twilight groaned as she heard her bedroom door shut with a soft click. It was still much too early for her to get up, so she rolled over and flipped her pillow. As she tugged her blanket up to her shoulders, she heard somepony’s hoofsteps walk up to her bed. Curious as to who it was, she lifted her head and looked over her shoulder to find her big sister, Gleaming Shield, standing before her with a comforting yet excited grin on her face.

“Gleamy!” Twilight nearly leapt out of bed as she pulled her into a hug. “What are you doing here? Aren’t you supposed to be back at boot camp for the Royal Guard?”

“Nah, not yet. We aren’t supposed to report back to training until noon…” Gleaming hopped up onto Twilight’s bed and laid down between her and the wall, her cock hard as a rock. “I hope you had an awesome eighteenth birthday yesterday.” She nuzzled her little sister as her heart began to race in her chest.

“I did, thanks.” Twilight returned her sister’s nuzzle and laid her head just under Gleaming’s chin. “I’m so glad that you were able to spend the night. So... you know, now that I’m of age...” She bit her bottom lip as she felt her slit grow damp.

“That’s why I’m here…” Gleaming leaned in and planted a kiss on the side of Twilight’s neck, then made a trail of kisses up to her lips. Twilight moaned softly into her mouth as their tongues danced a tango of passion. Gleaming’s cock rested against the side of Twilight’s leg, a small bead of precum soaking into her coat. “I think it’s only fitting that you lose your virginity to somepony who loves you,” she whispered, breaking their kiss. “I hope you know that you mean a lot to me, and I only want to see you happy…”

Twilight nuzzled her sister’s neck and sat on top of her, her thick cock resting against her lower back. She wiggled her hips back and forth, pushing up against her length. Twilight felt her leak another bead of precum onto her back as she groaned in need beneath her. Twilight felt her herself grow wet at the thought of her filling her up with cum in her half-awakened state. It was still pretty early in the morning, so that meant that they could spend a good amount of time together, which was quite the rarity.

Gleaming pulled her down on top of her chest into a kiss. She ran her front hooves down and lifted Twilight’s ass up so that she could line herself up with her entrance. Breaking the kiss short, she glanced down between the two of them and saw that her little sister’s pussy was already wet for her. “Hehe, it looks like somepony’s already a little wet!”

Twilight playfully swatted her sister’s shoulder. “Gleaming, you know how horny I can get, but with you here, with me, I… Oh, just fuck me, please!” She buried her muzzle into her sister’s shoulder as she blushed furiously.

“Oh, you really want me to fuck you, huh? Before everyone else?” Gleaming ran the tip of her cock between Twilight’s engorged lips, grinning as her wetness shone on her tip. Her cock ached, begging for release. She nipped Twilight’s ear and held her tightly in her loving embrace. As she felt Twilight shiver, she pulled the sheets up over her back and rubbed her flanks with a hoof.

“You need me to ask again?” Twilight murmured.

“Nah…” Going as slow as she could, Gleaming pushed Twilight’s hips down, her unflared head sliding inside of her little sister with a soft pop. She held her there, letting Twilight adjust to the thickness, then, when she felt her nod into her shoulder, she pushed her down a few more inches. “You like this cock, don’t ya?”

“More than you know, sis...” Twilight groaned, pushing herself down to the medial ring. She lifted herself up until it felt like Gleaming’s cock was about to leave her, then she thrust herself down, nearly taking the whole length in one go. She bit Gleaming’s shoulder as she squealed. Twilight’s clitoris grazed against her fur, making her vision blur. She quivered in Gleaming’s embrace, then after a few more moments, she pushed herself down until her spread and swollen labia were pressed up against her sister’s groin. Twilight clenched her eyes shut and smiled when she felt her sister lick her horn, sending shivers down her back.

“How’re you feeling, sis?” Gleaming asked as she gently rocked her hips, her balls pressed firmly against Twilight’s butt.

“Full…” she whispered with a grin.

“Good.” Gleaming used her hooves to lift her up before she rammed back into her. She held her in place as she fucked her, making her drool onto her shoulder.

Twilight’s mind went blank as her sister’s cock hilted inside of her over and over again. Nothing else mattered to her in this moment, save for a strong desire to be pumped full of her sister’s seed. She wanted to give Gleaming a time she’d remember for the rest of her life, so every time she pulled back, Twilight clenched down as hard as she could, and every time she pushed in, Twilight made herself relax. She had read in a book that this would help both of them cum faster, so she was going to do her best at it.

A couple of minutes passed, the only sounds being her sister’s cock pumping in and out of her tight, virgin pussy followed by an occasional moan. Twilight couldn’t help those; hearing herself moan, coupled with the sound of her getting fucked good, helped her cum. “Finish… inside…” she panted, feeling her orgasm grow inside of her core.

“Oh, I was planning on it, but first…” Gleaming stopped fucking her and pulled out, making Twilight whine pitifully. “Don’t get your panties in a bunch, lil’ sis. I told you I was gonna cum inside you, didn’t I? Turn around.”

“Huh?” Twilight tried to get her sister’s cock back inside of her, but Gleaming wouldn’t let her.

“Get up and turn around. You don’t want me to grow soft, do you?”

Twilight’s eyes widened. She stood up, letting the blankets fall from her shoulders. She turned around, and as she positioned Gleaming’s cock at her entrance again, she felt a hoof stop her. Looking over her shoulder, she saw Gleaming fumbling around in the nightstand’s drawer moments before she pulled out a bottle of lube. Twilight’s mouth formed an ‘O’ as she realized what she had in mind, making her grin.

Using her magic, Twilight lifted the lube from her sister’s hooves and unscrewed the lid. She stretched her ass open and held it open, then used another spell to liberally coat the inside of her ass with lube. Then as an afterthought, she slathered some on her entrance and screwed the cap back on.

“So… you ready for your very first creampie?” Gleaming asked with a sly grin. Using a hoof, she moved her tip to Twilight’s ass and waited. She lit her horn and pulled Twilight down onto her chest, holding her down with her forelegs. Twilight wiggled her hips, giving her all the answer she needed. Then, without wasting another moment, Gleaming pushed at her backdoor until the tip slipped inside a couple of inches. Her tip was already flaring, signaling that she was close to cumming, but she bit the inside of her cheek, forcing herself to stay hard for at least a few good thrusts.

Twilight nuzzled the bottom of her sister’s chin as she felt her cock spread her ass. A trickle of her arousal slipped out of her folds and dripped down onto Gleaming’s length, providing more lubrication. Feeling especially horny, Twilight pushed herself nearly all the way down to the base of the cock, then paused. A few moments passed in silence before Gleaming started pumping in and out of her.

“Twily…” Gleaming groaned after about a minute. She placed her hooves on Twilight’s hips and pushed her down all the way, helping her take the rest of her length. “I’m… I’m…”

Twilight looked back and saw Gleaming’s face scrunch up a second before she heard her groan.
Gleaming’s front hooves pushed her all the way down onto her cock as she felt her insides warm from her cum. Twilight’s back arched as she moaned like a true mare, no doubt waking their parents if they were still asleep. Her hind legs twitched as she teetered on the edge, and when she thought that she wasn’t going to cum, she felt Gleaming’s hoof rub her clitoris.

“G-Gleaming!” she screamed, muffling her yell with a hoof. Twilight felt her pussy contract and release over and over, and even though she would have preferred to have her sister finish inside of her velvety tunnel, her butt was a very close second. It took her nearly a minute before she could gather her senses. She was panting heavily, her sister’s load settling deep inside of her, warming her from the inside out. “That… that was…”

“Great, right?” Gleaming asked as she rubbed her sister’s lower belly. “How’s it feel being full of your big sister’s cum?”

“Amazing… I wish you could be here every morning, B.S.B.F.F….” Twilight slid off of her chest and rolled onto her side, smiling when she felt her sister do the same. As she felt sleep tug at her weary and blissfully blank mind, Twilight’s left hind leg twitched as she felt her sibling pull her cock out of her. A little bit of cum escaped and trickled down the side of her inner thigh.

“So listen… keep my cum inside you,” Gleaming said with a giggle as she laid her softening cock on Twilight’s cutie mark, the last few squirts of her cum soaking into her fur. “When another pony wants to bust a nut in your butt, I want them to smell me first. I want them to know that I beat you to it…” Gleaming rubbed her cum into Twilight’s fur.

Twilight giggled as she snuggled closer to her sister. “I like the sound of that… I only wish that this moment would last forever…”

“Well… you know, it doesn’t have to end.” Gleaming kept rubbing Twilight’s flank. “I heard that Celestia was sending a couple of guards to escort you to the castle for your first day as a public-use mare. We were briefed the other day by Princess Celestia herself, and to make a long story short, she told us that you were only to be fucked in the castle for now. As a guard in training, I am allowed to join them and help escort you, by the way. Also, maybe you could show them a good time as thanks? I heard the two of them are especially gentle, too.”

Twilight felt Gleaming kiss the back of her head. “I’d love that a lot, Gleamy…” As a yawn forced itself past her lips, she whispered, “But first, I’d like to get a little more sleep before we have to get up. After all, your warm cum is starting to lull me to sleep…”

Twilight woke up from Gleaming nuzzling her neck. She groaned as she opened her eyes, the sun’s rays nearly blinding her. “Ugh... do we have to get up now?” she asked.

“Yeah, the guards are already downstairs, sis…” Gleaming whispered, slipping out of bed. “We’re like… five minutes late already.”

“We’re late?” Twilight bolted upright and jumped out of bed. “I haven’t even had breakfast yet!” Her shoulder slumped as she pouted at Gleaming, her bottom lip sticking out.

“Oh, I think the guards can handle that. I can help too, if you want.” Gleaming used her muzzle to push Twilight out of her bedroom. “But first, we gotta get to the castle. We can give you a good breakfast full of protein and fluids, but only if we get going. Besides…” She leaned in and nipped Twilight’s ear. “I don’t know how much longer I can hold myself back with your cute little ass in front of me…”

Twilight snuck a look under Gleaming’s legs and saw that she was already at half-mast. She relented after a few seconds and said, “Oh, okay, but only on one condition!” She trotted from the room, swaying her hips a little more than usual.

“And what might that be?” Gleaming asked as they trotted down the stairs. Their parents were already out of the house, so they met the two guards out on the front porch.

“I want you to be last…” Twilight said under her breath, just loud enough for her big sister to hear. As they trotted away from the house, she felt Gleaming’s snout give her slit a nice, long lick, making her jump in surprise.

“Ah, I see…” Gleaming snickered. “You want my cum to be the last thing you taste before class, eh?”

“M-maybe…” Twilight stuttered, blushing madly.

Since it was still relatively in the morning, not that many ponies were out, so they made it to the castle without much hassle. The guards did have to stop once to keep a mare that Twilight didn’t even know from mounting her in the street, though. Even though Twilight would have liked to be fucked again so early, she didn’t want to be weary and worn out for the fine guards who were taking the time out of their day to escort her to the castle.

As they finally made it through the castle’s gates, the guards nodded at her and began to leave. Twilight shot a look at Gleaming, who nodded back at her as if to say that she should stop them. “H-hey, wait…” she said. Twilight sat down and rubbed her left foreleg with her right as her ears flicked back. The guards turned around and looked at her, their eyebrows raised. “I didn’t get to thank you for escorting me here.” The guards shared a knowing look at each other before they walked back to Twilight with soft, yet sly smiles on their faces.

Twilight looked around and spotted the guard house near the entrance they had just passed through. “Mind if we go in there? I haven’t had breakfast, and I’d like some… stuff to fill my stomach up.”

“Right this way, Miss Sparkle,” the guard on the left spoke up, her cock already hard as a rock.

They all trotted inside the guard house, and as soon as the door was locked, the guards were upon her in a flash. As Gleaming stepped aside, the first guard, a white unicorn, stuck her snout under Twilight’s tail and pushed her tongue as deeply inside of her slit as she could. Twilight’s legs began to shake as her arousal dripped from her slit, making a small puddle on the floor. She felt the guard’s tongue flick up, making come hither motions just shy of her G-spot. Her vision went blurry for just a moment, then as it cleared, she saw the other guard step in front of her with a needy look upon her face.

Twilight went to work. She bent down and flicked her tail off to the side, then ran a hoof over the second guard’s cock, smearing her precum all along her length. She wasn’t as big as Gleaming, nor as thick, but that didn’t matter. She was the perfect size for warming up deep-throating her sister. As another bead of precum formed on the guard’s tip, Twilight heard her give a soft whinny of need. So, knowing exactly what she wanted, she took her tip into her mouth and lapped at the underside.

The guard stomped a hoof and groaned, bucking her hips into Twilight’s mouth. She only smiled at that, then used her magic to push her forward. As she felt the guard behind her mount her, she spread her legs and wiggled her hips. That guard wasted no time in sticking her cock right where it was meant to go, shoving most of it inside of her. Twilight’s eyes went wide at that, for it had just pushed the cock in her mouth halfway down her throat. She was glad that she didn’t have a gag reflex like most of the population, giving her endurance to keep going without missing a beat.

As the guard fucked her tight slit from behind, Twilight bobbed her head in time with that guard’s thrusts. She grinned as the thick medial ring slid into her throat with no problem. Her tongue darted all across the bottom of it, wetting it as much as she could. Twilight moaned as she ran a hoof over her throat, taking much pleasure in feeling the cock pump in and out of her through her skin.

She moaned again and closed her eyes as the cock flared deep in her throat, and knowing that the guard was about to cum, Twilight shoved her snout up against her balls and smelled her musky scent right before she felt the cock throb. The guard moaned and started fucking Twilight’s throat as she came. Twilight felt her hunger pangs begin to disappear more and more with each shot of cum that was deposited right into her stomach. She clenched down with her pussy’s muscles, then felt the guard fucking her tense up. Twilight felt that guard’s head flare deep inside of her velvet tunnel, then after a few more erratic thrusts, she came. As she felt her cum splatter and fill up her deepest parts, Twilight came, squirting onto the guard’s inner thighs.

Twilight panted as the cock left her throat. She laid her head on the ground for a few moments as she enjoyed her afterglow. The guard that she had just blown nuzzled her between her ears and laid a light kiss on her head. The guard from behind pulled out of her, and in her bent over state, Twilight was able to keep most of her load deep inside of her. A little bit did slip out of her to run down her legs, though, making her shiver in delight.

“Still hungry, Twily?” Gleaming asked. Her cock was as hard as rock from watching her little sister get spit-roasted by her fellow guards. She’d been jerking herself off throughout the entire ordeal, unable to help herself. Gleaming saw Twilight nod, and as she picked her head up off of the floor, she stood over her and waited. “I’m pretty close, Twilight…” she panted as her cock twitched from feeling her sister’s breath on her tip.

“I wouldn’t have it any other way…” Twilight opened her lips and kissed Gleaming’s tip. “I want you to fuck my throat, sis.” She wrapped her lips around Gleaming’s tip and sucked, teasing her opening with the tip of her tongue. A few moments passed, then she bobbed her head back and forth, the tips of her ears brushing against Gleaming’s belly. Then, without warning, Gleaming bucked her hips forward, pushing her tip into her throat. Twilight scooted forward and swallowed her entire length in nearly one go. Her lips were spread as far as they could go, almost painfully, so, but as a mare, she needed to show Gleaming a good time. Twilight desired nothing more than to sate her sister’s needs and to taste her wonderful seed.

With Gleaming’s cock lodged deep in her throat, Twilight pushed further more until her snout was pressed up against her groin. She smelled her cum on her balls, making her grin and want to do as good as she possibly could. Holding her face there, she used a hoof to tenderly massage her orbs, then as she heard her moan like she usually did when she was about to cum, Twilight lit her horn and rubbed Gleaming’s clitoris.

“I-I’m… fuck, I’m cumming, Twily!” Gleaming squealed. She face-fucked her little sister with all she had, and when she could hold on no longer, she shoved her cock as deeply into her tight and warm throat as she could and finally came.

Twilight’s eyes went cross-eyed as she saw her sister’s balls twitch with each shot of cum. The first one was massive, easily twice the amount of the first guard’s load. As the need to breathe popped into her mind, Twilight pulled back slowly, feeling Gleaming paint her throat white with a new shot of cum every inch or so. Then, as she felt her sister’s head start to shrink, Twilight let it slide out of her throat to rest on her tongue. She moaned in delight as she finished cumming on her tongue, giving her a small taste that would sate her desires for at least the next hour.

Gleaming stepped back and pulled her cock from Twilight’s mouth. “That… was… amazing… How did you get so good… at that…” she panted, trying to catch her breath. Gleaming looked down and saw Twilight looking up at her with her mouth open. Her eyes widened and her cock began to stiffen almost immediately when she saw that Twilight had a mouthful of her cum. Then, after a sly wink, Twilight lifted her head and swallowed the last bit right in front of her.

Off in the distance, a bell chimed, signaling that classes were starting soon. Gleaming helped Twilight stand up, then planted a tender kiss on her lips. “Will I get to see you again later?” she asked with a hopeful smile.

“You can count on it.”