Transparently Seductive

by dirty little secret

Rating: mature
Tags: Rarity, Sex, My Little Pony: Friendship is Magic, Thunderlane, Romance, Porn, Fetish
Length: 4450

Rarity rushes home after The Crystalling, in order to give her boy-toy a special treat. There are certain advantages to being translucent.

Rarity rushes home after The Crystalling, in order to give her boy-toy a special treat. There are certain advantages to being translucent, and she means to take full advantage of it before it wears off.

Warning: This story is transparently nothing but gratuitous clop.

Published 2016-07-04 18:10:02 UTC
Last updated 2016-07-04 18:10:02 UTC

Prologue

Prologue

Twilight ran doggedly through the streets of the Crystal Empire after Rarity. “What's the rush? Wait!” she shouted.

“Nothing, nothing.” And yet, Rarity didn't stop running. Her freshly-crystallized coat glinted and glistened in the sunlight. “I just want to get back to Ponyville as quickly as possible.”

“But what about...” Twilight was falling too far behind, so she just teleported in front of Rarity. “But what about the party?” she asked as Rarity rushed by. “Flurry Heart's just been crystalled – don't you want to stay and congratulate Cadance and Shining Armor?”

Rarity didn't even break her stride. “I'm afraid it's very time sensitive!”

For a long moment, Twilight just stayed right where she was, staring at her galloping friend. Finally, she shrugged and flashed up in front of her again. “Rarity, I don't know why you're in such a hurry, but would it help if—” she teleported again to keep up “—if I teleported you back to Ponyville?”

That stopped Rarity in her tracks. “You could do that?”

“If it's that important to you...” Twilight walked up to her easily now that Rarity had stopped. “But I wish you could tell me what the crisis is all the sudden. Is there something wrong? Do you have some dress order you're behind on because you came out to the Crystal Empire with us?”

“No, no. None of that.”

Twilight quirked an eyebrow. “Then what?”

“I'm afraid it's personal. I couldn’t dare to say it.”

“Alright, fine.” Twilight shook her head. “I'll always help a friend if I can – even a strangely secretive friend. Are you ready?”

Rarity nodded. “Thank you, Twilight. This is going to make somepony very happy.”

“Okay, here goes nothing...” Twilight's horn lit, and she grunted with the effort of the massively long-distance teleportation. But Rarity wasn't concerned – Twilight had always been particularly gifted in magic, and since becoming an alicorn, her powers had only grown.

There was a blinding flash, and then Rarity found herself in the middle of her boutique back in Ponyville. A quick glance down at her hooves confirmed that she was still crystallized. She could see the slight pattern in the carpet through her hooves. Perfect!

Now she just had to find Thunderlane before the crystal effect wore off.

This was going to be an amazing treat for the big lug of a stallion. Not that he particularly deserved it – he wasn't the most faithful or the most devoted of special someponies, and to be perfectly honest, she was more or less just toying with him while she waited for Mister Right to come along and sweep her off her feet. A lady does have needs, after all. And to be even more perfectly honest, well, being able to see him inside was going to be a treat for herself as well. She didn't see the need to be quite that honest with herself, though – she was the element of generosity, not honesty – so she headed for the door to find her special somepony and give him a special treat.

And who should she happen to see in the street the moment she opened the door, but the dark grey stallion himself! Perfect!

Author's Note

This story was chosen by my Patreon supporters! Every month, I take suggestions from my supporters and let them vote to determine which story I'll write next.

If there's something you've been dying to see me write, please go to my Patreon page and sign up to be part of the suggesting and voting process.

The Advantages of a Crystallized Marefriend

Thunderlane turned and blinked in surprise when the boutique's door burst open right in front of him. “Rarity? I, uh... I thought you were in the Crystal Empire!” He blinked some more as the bright sunlight glared off of her white coat. It was way shinier than usual for some reason – had she covered herself in glitter or something? It wouldn’t surprise him; that mare had a definite weakness for anything sparkly.

“Aha! Perfect timing, Dearest. I do hope I wouldn’t be interrupting anything if I invited you to come inside?” She fluttered her long eyelashes at him ... he had to admit he was a sucker for that.

Well, he had actually been on the way to see if he could 'hang out' with Flitter and Cloudchaser a little before Rarity came back, but she definitely didn't need to know about that, and it could wait. “For you, babe, I've got all day!”

Rarity just smiled, gave him the bedroomiest of eyes, and slipped back inside the boutique. She left the door wide open behind her.

Knowing an invitation when he saw one, Thunderlane didn't hesitate to follow her inside ... and lock the door behind him. He'd been casually going out with Rarity for months now, ever since that thing with Blossomforth hadn't worked out. How could a mare expect total exclusivity in a town so full of single ladies, anyway? It was unfair! But by now, he knew the drill with Rarity, so he wasn't surprised to find the boutique's lobby empty. She would be waiting for him upstairs, in her bedroom, so that's where he went.

Rarity would have struck him as the more romantic type, the type of mare who took a lot of effort to get into the mood, high-maintenance ... if not for the day he'd first met her. Blossomforth had surprised him that day by orchestrating a surprise threesome with the fashionista, and Rarity had, well, swept him off his feet before he even knew Blossomforth was there. That encounter had stuck in his memory, so when Blossomforth finally snapped and told him where else he could shove it, the thought of that day had led him back to Carousel Boutique. Rarity was always very direct about what she wanted, with none of the coquettish dance her public persona seemed to imply. She was actually a pretty amazing special somepony, one of the best he'd ever been with, despite her insistence on not being seen in public with him.

And finally, there was her bedroom door, hanging open and waiting for him. He stepped inside, already beginning to swell out of his sheath a little at the thought of her. He had never been inside this room without also ending up inside Rarity, so the mere act of walking in was enough to get him started.

“Well hello, handsome,” Rarity cooed. “Notice anything different?”

She was radiant. Her mane was done up and decorated, which wasn't unusual for her, but instead of decking herself out in lacy lingerie or a kinky saddle, she was... she was...

“Rarity, you're... You're all, uh ... crystal-like!”

She giggled a little. “How eloquent of you.”

“Hey!”

“But astutely noted, nonetheless. I've gotten myself crystalled, a bit of Crystal Empire magic courtesy of a certain little alicorn foal. Unfortunately, it's temporary, but how do you like it?”

Her coat, her mane and tail, every bit of her glistened and sparkled, even her eyes. It was very striking. “It's incredible!” As he looked for a moment, though, he noticed that he could see the pattern of her curtains right through the middle of her body. “Woah, wait! I can see right through you!”

“That's the most magnificent part, isn't it?” She gave him a sultry smile. “And it could lead to certain advantages in the bedroom, could it not?”

It took him a moment to figure out what she was talking about, but once he did, his eyes bulged out ... as did something else. Being able to see through her also meant being able to see into her, being able to see anything that was inside her. He licked his lips.

“Ah, yes,” she said, coming slowly toward him. “Now you've figured it out.” She stopped and smiled lasciviously, looking him in the eyes. “Care to give it a try?”

All Thunderlane could do was nod dumbly. At least his tongue wasn't hanging out ... yet.

“Good. Why don't you come over and take a seat?” Rather than waiting for him to ask what she meant, Rarity simply lifted him up in her magic and plopped him down on the edge of the bed. “There. Now just relax and allow me to— Oh my goodness!” She looked up at him with a devious glint in her eyes ... or was that just the glittering of crystal? “Why, I'm no expert, but I might be tempted to think the idea of this has gotten you a tad bit excited.”

Thunderlane felt his cheeks heat. It was a little embarrassing how well Rarity could play him sometimes, pushing just the right buttons. His erection was blatantly obvious in this position, bobbing up and down as it neared its full size and hardness. She hadn't even touched him, hadn't even showed him anything overtly sexual, and yet here he was, unable to control himself as if he was some dumb teenage colt.

She made no further mention of it, instead licking her lips and sliding her body between his outspread back legs. Despite the crystalline appearance, she was as soft and warm as ever – that was a relief; he had to admit to a slight fear that she would also feel like a crystal.

Slowly, agonizingly slowly, she lowered herself down, until her face was a hair's width away. He could feel her warm breath on it. “Are you ready, Dearest?” she asked. “Do you want me to—?”

His cock bobbed upward on its own and pressed its tip against her lips, silencing her, save for a little sound that was a cross between a muffled bleat of surprise and a moan of repressed desire surfacing. Rarity gave up words, instead moving to a far older, more sensual language. She grasped his length in her delicate hooves and drew her tongue across the contours of his tip. A thin liquid strand connected the tip of her crystal tongue for a moment as she pulled away, and she dove in for a second lick before it could break.

Thunderlane rolled his head back toward the ceiling and grunted as she coaxed him to full, ravenous, arousal ... as she was always so good at doing.

She pulled away for a moment, leaving him twitching in her hooves, his tip growing suddenly cold in the air. “Take a look, Dearest. You're going to want to see this.”

The moment he looked back down, her wondrously warm lips and tongue were back on him. She met his eyes, gave a playful wink, and then opened wide. His slightly-flared tip brushed past her lips and into her mouth. It was nothing he hadn't felt before, but it was something he hadn't seen before. His eyes went wide as he saw the head of his cock through the top of her muzzle, saw it sliding in deeper, saw it deform slightly to better fit the invisible contours of her mouth.

“Oh... Oh Goddess! Rarity, I can see it!”

As wide as her mouth was stretched, Rarity still managed to smile a little. And then she slipped him in deeper. He could see it going in deeper, could see it filling her face from her dripping lips to the back of her throat. She pulled back and began bobbing up and down in just the right rhythm, just the way she knew he liked best. Thunderlane moaned in appreciation when she began using her hooves to help, rubbing the soft parts of them up and down as her mouth made his shaft nice and slippery. Oh that familiar warmth of Rarity's skilled mouth, the little slurping sounds she made! But what really blew him away was being able to see exactly what was happening inside her. He could even see himself through her hooves, see the way the skin of his shaft slid and bulged as she worked at it.

Thunderlane put a hoof on the back of Rarity's head. He wouldn’t force her down – she wouldn’t stand for that, and he was too nice a colt to try – but she knew what it meant, knew what he wanted. It wasn't something she usually enjoyed doing, but she sometimes indulged him as a special treat, even though it was difficult for her.

Looking back up at him with her big glittery eyes, Rarity rose up higher on her hooves, getting the angle right. Then she did just what he was hoping she would: she pushed herself down, playing as if his hoof was doing all the work, but slipping down and down with each bob of her head taking more and more of him into her.

This time, instead of just seeing the bulge grow in her throat, he could see the reason for that bulge. He watched in awe as his thick length slid farther and farther into her, watched it push her open wider, watched it fill her throat completely.

Rarity was already visibly suppressing a few little convulsions of her throat, but that only added to the amazing smooth sensation, and she didn't stop. Letting her wet hooves drop to his thighs, she kept going down and down until she made it as far as she usually could. The widening base of his cock was just too broad for her lips to stretch around, so that's where she stopped, pausing for a long moment with only a couple inches of him left untouched by her uncontrollably drooling mouth.

The sight of Rarity like that made Thunderlane's jaw drop. Every bit of her seemed to be transfixed around that big dark cock inside her, and he could see it perfectly! It filled her completely, defining her throat by its shape ... and yet he could see – as well as feel – the way she squeezed it when her throat convulsed.

The convulsions grew and Rarity finally gave a barking cough and yanked herself up. A clear glob of spit bubbled in a very unladylike way from one nostril and a thick strand connected her open mouth to his tip, but she barely took a moment to suck in a few gasping breaths before shoving herself down on him again.

This time it was faster, and he could watch in amazement as his cock slid down through her neck. “Unh! Rarity, I'm already gonna...”

She pulled away again, flinging her spittle away with a flick of her head. “Oh no you—” she coughed and spat out a gooey stream. “Oh no you don't! We aren't finished here yet.”

Thunderlane barely had time to cool off from his near-orgasm before Rarity pushed him onto his back and climbed on top of him. He licked his lips as he stared at her glistening-smooth belly and the pert little crystal teats below. She began rocking her hips, easily sliding her already-wet pussy up and down over his spit-soaked cock. He knew this was one of her favorite things, that she loved the feeling of his medial ring brushing back and forth over her clit ... but he was desperate for more than that. More than anything, he wanted to get inside her, to see himself inside her, to achieve that orgasm he'd just missed out on.

So he braced his legs against the edge of the bed and slid down a little, timing it along with Rarity sliding upward. This time, Rarity slid a little bit beyond his tip, and when he felt the hot softness of her pussy begin to wrap around him, he pushed into her.

Rarity gasped at the half-unexpected penetration, even though it slipped inside with remarkable ease. Both of them froze for a moment, mesmerized by the heat of the connection they had just made. It didn't matter how many times they had been together, the first contact was always the best – it always felt so right, and yet so new.

Propping his head up on a pillow, Thunderlane looked down at where the two of them joined. He bit his lip. It was incredible – he could see the tip of his cock just inside her pussy. It made her nether lips bulge out around it as they winked furiously and dripped Rarity's sweet nectar onto his crotch.

“Like what you see?” Rarity asked, once she'd caught her breath.

Rather than answer her, Thunderlane pushed himself back upward onto the bed, forcing his cock deeper inside her. Inside, it rose to around the level of her sparkling nipples.

Rarity moaned, then raised herself up straighter. Once she was straight up above him, she began slowly bouncing up and down, quickly taking more and more of him inside. “Oh! Oh yes,” she mumbled as she gradually lowered herself.

More and more of Rarity's warm, wet softness enveloped him, but Thunderlane could only stare in awe as he saw his cock rise farther and farther inside her. Already, it had risen above the tops of her thighs, and still there was...

Rarity slammed down on him, taking the final few inches in one needy thrust. She screamed her passion to the ceiling, “Yes yes YES!”

“Rarity, you...” Thunderlane had no idea what to say. He just pointed at her belly.

She – after a moment to recover – noticed him pointing and bent her head down to look. “Oh my goodness, Dearest.” She took a few deep breaths as they stayed still. “And I can feel every inch of it.”

His cock was spreading her wide at the base, and it stretched nearly up to her ribs now. Thunderlane had never before realized just how deep inside her he could be.

Rarity rocked her hips back and forth, beginning to take real pleasure in being filled, and even though that felt amazing, Thunderlane had eyes only for what was going on inside her. He could feel her stretching around him, accommodating his size, and he could hear her soaked pussy lips squishing against the rim of his sheath, but it was the sight of his own cock moving gently up and down inside her that drove him crazy.

He moaned as Rarity increased her pace, her gentle rocking speeding up more and more until her hips jittered back and forth. A few strands of hair fell loose from her mane and drooped across her face, but she didn't even seem to notice. Her breaths came in little gasps timed along with her motions. “Thunder! I'm – I'm close!”

She didn't have to say it. He could tell just from the way she moved, the way she was breathing, the way the gentle curve of her belly convulsed up and down around the visible shadow of his cock inside her.

Thunderlane knew what Rarity needed – she could never get off like that on her own, not quite, not without help. But by now, he knew just what to do. He curled one wing around his body and stretched it out until the very tips of his primary feathers came down between Rarity's thighs. Just the very tip of just one feather touched her winking pink clit, brushing the shiny surface of it as she moved.

Rarity shuddered to a halt almost instantly, then squealed out her passion as her pussy clamped down on Thunderlane's cock.

Warmth gushed down across his crotch, and Thunderlane pulled his wing away just in time to keep the tips of his feathers from getting soaked. He stared as Rarity's juices coated his sheath and balls, leaking down onto the bed. He could see his cock being rhythmically squeezed, squishing very slightly thinner every time her inner walls clinched tight around his shaft.

Finally, when Rarity slumped down, her limbs twitching, her insides hotter and softer than ever, she looked at him and smiled through the stray hairs plastered to her face. “How did I ever manage before I started dating a pegasus?”

“So it was good, huh?” Thunderlane didn't take his eyes off her belly, staring at his own length deep inside her.

“You haven't the slightest idea... but there is one more thing I want.”

That got him to look up at her face. “Hm?”

She leaned down over his chest, until their lips met in a quick kiss, then she brushed her cheek over his and whispered into his ear, “Who's this lazy colt who just lays there while I do him? Where's my rough stallion of a lover? ... I want you to fuck me like you mean it!”

Ooh, she always knew just how to tweak him! With a heated snort, he rolled over and pinned her to the bed beneath him. His hind legs fell off the edge, so he stood up and braced his front hooves against the mattress. Rarity stared up at him with a knowing grin, her pussy still crammed full of his cock. She squirmed side to side a little, wiggling her hips back and forth, writhing around the shaft visible inside her.

Thunderlane started off with a couple slow, deep thrusts, just getting the feel of her welcoming inner walls, just watching in fascination as his cock slid back and forth inside her. But he soon moved on to faster and harder thrusts, jamming as much of his length into her as he could, yanking back, and slamming into her again with all the force he could muster.

Rarity bleated out a little yelping moan with every wet slap of his balls against the curve of her inner thighs. She wrapped her back legs around his waist, pulling him in closer ... as if he needed any encouragement.

Grabbing her hips in his hooves, Thunderlane pushed even harder, desperate to get even a tiny fraction of an inch deeper inside, even though there was nothing more to give. His breath came in hot blasts out his nose as he worked her pussy as hard as he could. His eyes, though, were locked onto her sleek belly. It was gracefully curved, as always, and tempted his eyes to trace downward to her slightly-darker white teats that jiggled and glittered with each heavy thrust. That would have been reason enough to look any day. But what drew his eyes now was the slight bulge just below her belly button that grew as his cock visibly began to flare up inside her, stretching her wide. He'd never before realized just how wide his tip flared out when he was getting close.

Rarity panted to him, her pussy winking and dripping around his shaft. She was loving every bit of it.

Barely able to take it anymore, Thunderlane lost his rhythm. His mighty shoves died down to powerful but short jerks forward because he just couldn't stand to pull out far enough for a proper thrust. “Rarity,” he cried out in a strained voice, “do the... Unh... Do it!”

Smiling at him, Rarity lit her horn. She didn't need to ask what he meant. The familiar tingle of her magic cupped around his heavy balls, gently squeezing, ready to milk him for all he was worth.

That was all it took. He shoved his length into her one last time, pushing her across the bed a little in his orgasmic ferocity. And finally, the floodgates loosed. He could feel the massive wave of it travel up his cock, he could see the pulse rush through her as his own skin bulged inside her. Deep within, a flood of opaque white gushed out and pooled inside her translucent body. More and more came – he never could stop pumping until Rarity's magic released his balls, and Rarity never released him until she was fully, fully satisfied.

He filled her more and more, until the shape of her insides were completely outlined in white, and even then she made him cum more, gloriously overfilling herself. The thick white overflow of it streamed visibly around the outside of his cock, squirting around the edge of his flare and working its way down in pulsing surges until it burst free and splashed out between his sheath and the hot flesh of her pussy lips.

Only after there was a substantial puddle on the edge of the bed beneath her ass did Rarity finally release her magical hold on Thunderlane. He collapsed onto her, rising and falling on her chest with his heaving breaths. Rarity petted the back of his mane as her body accustomed itself to the new flood of heat deep inside.

They stayed like that for a long moment, each of them slowly recovering from the experience. Before Thunderlane even managed to catch his breath, though, Rarity's coat shimmered and went back to normal in an instant. Gone now was the glitter of crystal ... now she had only the sheen of sweat and her usual gleaming-white fur.

Slowly, Thunderlane rose up and pulled his softening length out of her. A little deluge of white followed his thick tip when it flopped free, further staining the bedsheets. But neither of them paid any mind to that.

As soon as Rarity scooched over to the middle of the bed, Thunderlane lay down next to her, letting his now-limp and still-wet cock flop down across her thigh.

They relaxed there for a long while, each of them flirting with sleep even though the sun was still high in the sky. Eventually, though, Thunderlane propped himself up on an elbow and looked over at Rarity. “So,” he asked, “are you going to get crystalled again sometime?”

She sighed. “I don't know ... it has happened twice so far, but it's a rare occurrence. I don't know if I will ever get a chance to experience it again.”

“Oh...” Thunderlane dropped back down onto his back.

“But I am glad I took the fast way home and made the most of this opportunity.” Rarity rolled onto her side and kissed him on the cheek. “And if it happens again, I'm going to make sure I don't miss out.”

He fell silent for a long moment, but then spoke up, “So... do your friends also get crystalled?”

Rarity looked over at him, squinted for a moment, then playfully poked him in the ribs. “You cad! You absolute cad!”

“What?”

Author's Note

This story was chosen by my Patreon supporters! Every month, I take suggestions from my supporters and let them vote to determine which story I'll write next.

If there's something you've been dying to see me write, please go to my Patreon page and sign up to be part of the suggesting and voting process.