The Devil's Mark

by BlueFin

Rating: mature
Tags: Porn, Sex, Fetish, Slice of Life, Alternate Universe, Anthro, Original Character, My Little Pony: Friendship is Magic
Length: 4046

A cold night gets hotter after a simple question gets an unexpected answer...

After years of going back and forth, North Star and Andante have officially become a "thing", with wedding rings and children to boot. When North voices his concerns about being a parent, Anne does her best to offer some comfort, which earns her a gift of...large proportions...

Contains: M/F, transformation, size difference, oral, large endowments, biting (no blood), huge insertion, cervical penetration, cumshots, and multiple orgasms.

Published 2019-12-08 19:40:01 UTC
Last updated 2019-12-08 19:40:01 UTC

"Mark Me"

Cold winds howled and swirled outside of a house nestled in the outskirts of Manehattan on a chilly winter night, but the family who lived inside of it were as warm as they could possibly be. The light from a glowing, cozy fire casted warm colors and strong shadows into a small living room as it crackled and roared in its place behind a metal grate. Across from it sat a couch, with a magenta coated pegasus mare huddled underneath a fleece blanket as she watched the flames dance before her dreary rosy pink eyes. Her ashy grey and yellow streaked mane curled around the edge of the blanket, and she sighed contently as she let her body sink deeper into the warmth of the cushions around her, eyelids drooping to lull her into a peaceful sleep, but a sudden dip in the open space beside her made them snap back open, glancing over at the newcomer.

A tall tan unicorn stallion with white markings dotting his arms and a colorful mop of curls atop his head stared back at her with an amused grin, ice blue eyes nearly matching the fire’s glow. “Hey, Anne,” he purred, long tail curling around one of his legs while an arm hooked around her shoulders to pull her closer. “Did I wake you?”

The mare shook her head, nuzzling at the cheek that he offered her before drawing away. “No, North...I was up,” she murmured softly, peering up through her eyelashes at him. “Are the kids asleep?”

He hummed tiredly, letting his own eyes flutter shut while his head lolled back to rest against the couch’s back. “They should be. The boys were fussy as usual.” There was a pause, then a soft, “Andante?”

Her ears lifted at the tone in his voice, sounding almost...anxious. “What’s wrong?”

North sighed, absentmindedly staring up at the ceiling with a blank expression. “Do you think we-er, I’m going to be a good parent?”

The mare’s head finally lifted to look at him fully, eyebrow raised, but she didn’t say a word. In truth, the path the two took to get to this point was...trying to say the least. From the simple hurdle of possibly facing ridicule from their coworkers about their relationship once they made it official, to the more serious potential threats and jabs at the couple personally, the CEO and his Secretary took it all in stride. And, with a simple yet elegant wedding only four months after the question was popped and three beautiful babies a year after that (though that in itself was an ordeal), things had been moving pretty fast for them, so she didn’t blame her husband at all for having some doubts. She was, however, very curious on where the stallion was going with his question, deciding to listen to what he had to say.

His frame moved past her as he rested his chin in the palms of his hands, lazily letting his ears droop to a relaxed state. “I was a King before I came here. More like a dictator, really. Anything I wanted, I took, no questions asked. Anyone who tried to overrun my kingdom were either eliminated in an instant or given a three day warning to submit and surrender before my armies were sent out to destroy every bit of land that they ruled over. My soldiers took thousands of captives from their homes in the middle of the night, making them watch as everything they worked for burned to the ground. Those who refused to leave...well...their ashes meant no more to me than a grain of sand on a beach. I was one of the most feared beings on my planet, and now...this. Dumbed down to a business owner who has no idea in the depths of the Abyss what he’s doing.”

Anne frowned, lightly butting his shoulder with her head to get his attention, giving him a soft smile once she saw his eyes glance in her direction. With a ruffle, a wing stretched out from the warmth of the blanket to wrap around his torso as a means of comfort. “Hey. I know your reputation in the past hasn’t been...the best...but you’re changing. Slowly, but surely. And look-” she paused to take one of his hands into her own, admiring the rings on their fingers- “We’re in this for the long run now. And, if you forgot, I don’t really know what I’m doing either. It’ll be a learning experience for the both of us.” Her face then lit up as a thought came to mind. “Speaking of which… Obsidian and Pixel have a little one on the way…”

North snorted as he rolled his eyes while he finally chuckled at the thought of his friend toting a foal around, using his magic to pull a wine glass and a bottle of (very expensive) Cheval Blanc from the nearby liquor cabinet, popping the cork and letting the blood red colored liquid flow into the clear container until it was halfway full. “I’m happy for them. Though I’m surprised that they were willing to calm down enough to even bother making the thing, since they’re always at each other’s throats.” A few moments of silence fell between them as he sipped at the drink in his hand, soon tilting it towards the pegasus. “Want some?”

She huffed softly, gently pushing the tempting glass away from her lips. “North, I can’t drink, you know that. Have at it.”

The stallion shrugged his shoulders. “Your loss.” Things fell quiet again, save for the occasional pops and snaps coming from the firewood as heat continued to embrace it for all it was worth. They could have spent the rest of the evening like this, but of course the idea that wriggled to the front of his brain had to turn all of that onto its head. His gaze shifted back over to the mare, who turned to look at him with slight confusion at the sly grin on his lips. “You know...there’s something that we haven’t done in awhile…”

Anne blinked, eyes widening as the realization of what he was referring to quickly dawned on her. Her already pink cheeks turned a few shades darker as she blushed heatedly. She already knew the answer, but had to ask: “Oh? And what is that?”

Right on cue, the fire was extinguished by a gust of wind (most likely created by North), and the room went dark. A playful lilt carried in the unicorn’s voice as he all but growled: “You’ll find out,” ridding her of the protectiveness of the covering around her body as she was effortlessly picked up and whisked off to the bedroom, ignoring her giggle-filled pleas and cries to be put down.

The pegasus’ fur tingled as lips trailed down the side of her neck, biting down on her bottom lip with a low grunt from a sudden pinch to the skin just above her collarbone. Warmth from North’s tongue soothed the stinging spot while also sending shivers down her spine as she squirmed against the bedsheets, toned legs still tightly wrapped around his waist from when he was bringing her up the stairs earlier. Her eyes opened a crack when she felt him pull back, looking up to find him peering down at her with a blazing passion deep in his hungry stare. Her heart easily picked up in speed, as if it wasn’t pounding fast enough.

“I’ve missed you, love,” he murmured while he worked on unbuttoning his shirt, going down the strip as though time didn’t exist. The soft material glided down his shoulders with one shrug, pooling around his elbows as he ran his fingers through his mane to keep it out of his eyes before leaning down to kiss the tip of his wife’s muzzle, which scrunched up in mock disgust while she stuck her tongue out at him. With a challenging snort, his lips captured hers, sucking at the offered organ until a pleasured gasp slipped out from the mare underneath him, pulling away once again to let the shirt drop to the floor behind him and to slip out of his jeans once he unhooked her legs. Lowering himself onto the bed’s edge, the stallion’s head tilted slightly to one side. “You are okay with me doing this, right?”

Anne nodded quickly, but her body trembled in defiance. The terms that they had agreed with -amidst fevered pants and soft groans- was that North would shift into another form -his true form- in order to switch up the action they’ve done countless times before. She had no real reason to worry about that, but the last time she had seen him showing his true colors, it had been with him hovering over her, snarling and trying to crush her windpipe in his strong grip. He wasn’t in control of himself at the time, but the images and sensations still lingered in the back of her mind, rushing forward all at once. Her eyes clamped shut as she instinctively whimpered from the thoughts, wings unfurling to hide herself behind them. Gentle hands pushed them aside in an instant, and her husband’s body curled around her as he held her close, nuzzling her cheeks lovingly as he asked “What’s wrong?”

“I’m s-sorry. It’s just- the last time I saw your real form was when you got possessed and tried to...tried to kil-”

A tight squeeze cut her off, followed by a peppering of kisses all over her face until North was looking at her with ongrowing sympathy. “Shh,” he whispered, rubbing her arms in a comforting manner. “It’s ok. I understand. We don’t have to do this if you feel scared.”

The mare slowly shook her head, letting out a shuddering breath. “I-I want to, I really do. I guess I’m a little paranoid. I’m so used to seeing you how you are now: tan fur, blue eyes, multi-colored mane. I love you like this, but I know it’s not really you. This is just a disguise to mask your true self. But...I trust you.”

He hummed, moving so they were both sitting up, then pressing her fingertips to his lips before taking her hands in his, giving them a squeeze. “I would never dream of hurting you intentionally, Andante. You are my Queen, and I plan to treat you as such. I know I might look a little scary when I shift, but I promise that I will change right back if you want me to, and I’ll make sure that you’re as comfortable as possible...within my limits, of course. Do you understand?”

Anne finally smiled warmly while she nodded again, this time with more confidence. “Absolutely.”

“Wonderful. Now close your eyes.” At her pout, North rolled his. “You don’t want the surprise ruined, do you?” The pegasus kept her frown, but did as she was told, ears lifting at the sounds of the bed springs creaking from a new weight digging into them and bones popping alongside a surge of magic. When things grew still again, she was really tempted to open her eyes, but didn’t dare to until a voice a good four octaves deeper than the unicorn’s original one gave the command: “Open.”

They did so, and the sight that lay before her was enough to steal her breath away for a few seconds. If the stallion was tall before, he towered over her now, the tip of his unicorn horn nearly touching the lowest part of the sloped ceiling. His fur had turned into a dusty and dull beige color compared to its usual lively tan, and black tribal like markings adorned his chest, back and muscular arms-of which a second pair jutted underneath the first.

On his head, four golden colored horns shaped like a ram’s curled around his ears, and his colorful mane was now a deep, dark purple, long locks framing his face. Among all these changes, the most noticeable things were his irises-red and almost glowing-, his teeth- shiny, sharp looking and the few that peeked out from behind his lower lip nearly as long as her pinky finger- and the massive bulge that strained within the pair of boxers he had yet to take off. He gave her a wink while slowly palming at the bump, ears slicking back. "See something you like?" He questioned in a teasingly innocent tone, earning a full body shiver from the mare, the feathers on her neck and chest fluffing up while her wings spread wide like a proud peacock, face as red as a beet.

"Gods above…," Anne muttered breathlessly, trying to get the blasted things at her side to settle back down, but to no avail. For whatever reason, she was extremely turned on, and any lingering doubts in her head were washed away from seeing that. Her hands couldn't move fast enough to yank off the bra and thoroughly soaked panties still clinging to her frame, tossing them aside and practically crawling over to the large unicorn, touching and kissing every part of him that she could reach. In hindsight, she probably would have winced at seeing herself acting so thirsty, but in the heat of the moment, it didn't really matter. Her core was set ablaze, and the only thing that could cool it down was just within her grasp. A few tugs to the stretchy fabric, and there it stood in all its glory.

The twitching cock in between North's legs was a beast in itself, hard length at least a foot and a half long and easily as thick as his wrist. Its spear like tip bobbed slightly from its own weight, drops of pre rolling down the vein covered shaft with each downswing. Not wasting a second, the mare lowered her head to slide her mouth around it, feverishly pushing and pulling back and forth as deep as she could go with wet slurps and suckles.

Two of the stallion's hands suddenly pressed against the back of her head to keep her at a steady pace, while the other pair were touching her wings, which were starting to stiffen from blood rushing back into them. Her soft moan triggered his: low, breathy and sensual as he let her continue to service the needy prick with ernest. Soon a quarter of the shaft was down her throat, then a little less than half. A bead of pressure building up deep within him signaled that it was time to keep things moving, easing her off of him to let her catch her breath, thin strands of saliva still clinging to her puffy lips.

The pegasus appeared to be a bit dazed as she panted, not really registering what was going on until a wet squirt snapped her out of it, looking down to find the behemoth being slathered in a generous coating of lube, watching the hand wrapped around it go up and down and up and down, smooth shaft now even shinier than it was before. Her gaze flicked upwards, eyebrow raised. The unicorn merely did the same thing, faking nonchalance.

"What? You weren't thinking about taking it dry, were you? If you want to be stuck on me forever then be my guest, but I'd like to do my business in private if at all possible…" Her wince caused him to smirk, using his free hands to both push her back into a lying position and lift her legs so they grazed his sides, two lube covered fingers teasing at her already slick entrance before spreading her open, the fat cock head then taking their place and slowly sinking in deeper with a steady, consistent push.

Even with all the lubrication, Anne couldn't help but feel a bit squeamish from that tip pressing harder and harder into her folds. Her face twisted into one of discomfort at a certain point, where her body seemed to want to refuse this large invader by getting tighter, walls clamping down on the shaft like a vice in an effort to stop it, but still it kept coming. North was quick to pick up on this, making small, pinpoint thrusts to combat the strong grip, chipping away at the blockade until it loosened all at once, granting another five or so inches to glide into her depths.

Her back arched from the abrupt addition of pressure, the stretch, the fullness, a string of gasps firing from her mouth as any thoughts of making words dissolved into the background, the only focus being on the thick cock's journey to touch that spot, the one that would make all the pain be worth it. And, with a few more inches suddenly slipping in, it did so.

The rough bump against the opening to her cervix made her mind melt, going completely blank while all of her muscles contracted, unleashing the first waves of her love all over the thing deeply nestled in her snatch, getting a rumbly growl from the stallion as her walls gripped him even tighter than before, shaft twitching hard as even more blood was pumped into it. That bead of pressure steadily grew into a small ball, but it was going to take more for him to launch his spunk canon.

Taking his time, he began to pull back, rubbing at the mare's belly comfortingly at the sound of her soft, barely audible whine from that good feeling going away. She shuddered when he pushed in again, widening that tight opening a little with the tip of the leaking battering ram snug in her hold. The thrusts got faster, and deeper, more liquids oozing out of the edges of the more than stuffed hole, the pegasus nearly stunned to silence from the sensations plowing into her body.

Soon North's base was no longer visible, as every inch was crammed into a tight spot, and her newly explored cervix was quite tight. There wasn't as much give compared to her softer tunnel, but to feel her heartbeat jackhammering away at his head added a deeper level of intimacy he was very glad to experience. The room had mostly fallen quiet-minus the rhythmic slightly muffled slaps of his balls thumping against her rear, which jiggled on impact.

It didn't take long for Anne to cum again, making her passage slicker and warmer than either of them thought possible. Her moans dimmed down to little hums, head fully propped by the pillows under it as she couldn't really do much more than let herself go and ride that roller coaster to utter peace and calmness. But all too soon, she was being lifted and carefully turned over onto her front, hips up and face down. Her wings fluttered wildly at the new angle, being able to feel the shaft’s weight dipping in and out of her used confines. Already she was close, but the unicorn had one more trick up his sleeve.

“Look down,” his low voice murmured, prompting the mare to open her shut eyes and peer down below her with curiousity. What she saw made her heart stop for a second, suddenly wide awake. It seemed like the entire surface of the bed was covered in a mirror-like reflective substance, allowed her to see everything that was happening to her body. Her flushed face, disheveled mane, swaying breasts with nipples as hard as rocks, quivering belly- and the absolute mess that was going on between her legs.

Fluids dripped from the cock roughly pistioning within her, and her slit’s lips stretched and shrank with every thrust. Her clit was fully engorged and out in the open, winking furiously and adding more fuel to the liquid inferno that tried to slip past the dam that plugged it up. Even more impressive was the clear outline of the prick inside her as she gripped onto it, displaying how much her body had to loosen up in order to take all of it.

Just the sight of that-accompanied by North growling “Mine,” into her ear and biting down on her bare, unblemished shoulder- was enough to send her into a third and final orgasm, moaning softly before her head slumped against a pillow, unable to keep herself upright any longer, limbs going limp. Slowly the large thing was released, throbbing one last time before firing thick, stringy ropes all onto her rear, wings and back, the excess spilling down her sides like frosting on a cake. The last thing that she could remember before blacking out was the feeling of a soft blanket being pulled over her frame and North’s lips kissing her forehead.

The warmth from the morning sun’s beams coming through the curtians gently nudged Anne awake, rolling over to face them. The first thing she noticed once the fog of sleep still clinging to her wore off was how sore her body was, flinching from even the slightest brush against her thighs. She was more than ready to complain to North about it… only to find that the spot beside her was empty. Still warm, but empty. With a snort, she carefully withdrew herself from the covers, pulling on the clothes that had been left behind on the floor and wandering into the bathroom to freshen up. And there was the next surprise.

Her reflection in the mirror showcased a huge scattering of bite marks and hickeys all along her shoulers and the back of her neck. Someone sure was having a field day. Sighing, she went through her usual morning routine until a sound caught her attention. Heading down the stairs, she followed it to the children's room, peeking through the crack to take in a heartwarming sight.

North(still in his ‘new’ form) was gently cradling one of their foals in his arms, singing to her softly while his magic eased a bottle of milk out of her mouth. He gave her words of praise once she sucessfully burped, setting her back down in her crib beside her brothers, who cooed contently as they drifted back off to sleep with full tummies. His ears swiveled back at the sound of the door creaking open, turning to face his wife who had just slipped into the room, a warm smile gracing her features. He couldn’t help but smile back. “Good morning, sleepyhead. I’m surprised you managed to get down here without limping.”

She scoffed, rolling her eyes with a shake of her head. “Ha, ha. Very funny.” Her grin grew a bit brighter as she gestured towards the cribs. “And I think you just answered your own question about the whole parenting thing. If they’re not scared of you like this, then you must be doing something right.”

North hummed, eyes lidded. “Foals aren’t afraid of many things, I’ve noticed. But...you may have a point.”

“Always do. Now, could you care to explain what was going on with all this back here? I’m glad I’m still on maternity leave, otherwise I’d be getting a lot of questions.”

The stallion chuckled, trailing over the bumps with his fingers. “So I may have gotten a little carried away, my bad. Besides, seeing my marks on you makes me proud. It’s not everyday I get to feel that, you know.”

Anne blushed, reaching up to rest her hands on his chest. “You’re too sweet. Can you come back down so I can kiss you? You’re too tall now.”

“Says the one who has wings.” He obliged though, letting his horns glow as magic swirled around him, shrinking to his previous size. His blue eyes twinkled brightly as he cupped her chin, leaning down to meet her lips in a quick but tender kiss. “Is that better?”

She nodded, pulling at his wrist to lead him into the hallway. “Much better. Now hurry up, you don’t want to be late for work.”

“I’m sure the staff wouldn’t mind. I’d just tell them everything that happened last night.”

“North!”

“I’m kidding, love...mostly.”

Author's Note

Something warm and cozy in time for the holidays around the corner. Hope you enjoyed it! Thanks for Reading! If you have any questions or suggestions for future fics, feel free to let me know. Until next time!