“Dad, I… I need to talk to you,” Twilight whispered, unable to look at her father. Staring down at the corner of her bedroom.

“Of course, Sweetheart,” Night Light replied, taking a seat on the Princess’s bed right next to her. “What’s the matter, little bookworm? You can’t hide your feelings from me little filly. I knew right away when you asked me to come over that something was up… and looking to confess in your room is always a sign that it’s something big.” He chuckled, shaking his head. “The last time you asked me to come to your room, you took a whole fifteen minutes beating around the bush to work up the courage to admit you’d only got a ninety-nine on your advanced potions and apothecary exa—”

“Dad...” Twilight cut off his reminiscing, “This isn’t about some silly little test. I’m not a little filly anymore, I’m not just your daughter… I’m one of the most powerful ponies in existence, charged with keeping this whole planet safe.”

Night Light let out a long sigh, before resting a hoof on Twilight’s back, tenderly rubbing her. "I know, sweetie. And your responsibilities may be far beyond my simple ex-guard captain understanding… and stallions may not count for much in this day and age... but I’ll always be your dad.”

Twilight felt her father put his hoof under her chin, lifting it up so that he could see her eyes.

“And nothing is ever gonna change the fact that I’ll do anything for my little girl, to see her smile.”

Twilight’s frown only faltered slightly: the memories of happy times playing with her dad, with the beaming pride she’d felt from him upon her myriad accomplishments, not the least of which was her ascension to superheroine Goddesshood… none of it was enough to erase the pain and horrific misery that had been the last few years. None of it came close to the horrible realization of what she’d have to do to move forward.

“Dad. I-I don’t know what to do,” Twilight softly spoke, almost on the verge of tears.

“Easy, easy hon,” Night Light cooed. “I probably can’t help. But at least I can listen. Just what’s going on?”

“It’s Celestia, Dad,” Twilight breathed. “No. Not just her, it’s everything… the whole system. I thought at first that maybe this is all some sick prank of Discord’s… that everything Equestria has turned into since superpowers became so widespread is part of some evil plot. But it’s not. This… this… sick corruption has been in us all along.”

Night Light paused, blinking. “I don’t understand, sweetie. I mean… I do think that everything that is happening to stallions, and to the other races is awful. But it’s not the first time that nastiness has come out. Things will get better, the pendulum swings one way… then it swings back. That’s just the way history works.”

“Not anymore, Dad.” Twilight shook her head. “Not when you have somepony that is immune to history. Somepony that will last forever, and who is unstoppably powerful. There’s only one way now—Celestia's… I mean Sunlander’s way.”

“Hm.” Night Light sighed. “So what are you gonna do about it?”

“There’s nothing I can do. Sunlander has the power of a thousand stars. She can literally warp space-time. In a one-on-one fight, my thamaulogical powers are the equivalent of an ant trying to stop a speeding locomotive. And that’s even before I factor in her millennia of combat experience.”

“The bookworm I know always had a plan...” Night Light smiled. “And I can tell you have one now. But you’re not telling me. Why?”

Twilight blushed, looking down at the floor again. “I might not be able to do it alone. But I could do it with the help of everypony else.”

“The Elements?” Night Light asked.

“No, not even close. Not even with compound F. It’s not even a fraction of a percentage of the amount of backup we’d need. Only Alicorn-Supes would stand a chance, working together.”

“Ah. Hm,” Night Light pondered.

“Yeah. Luna’s out. I wouldn’t dare to try bringing her in. I don’t even know if she’s the same pony under there anymore. Maybe Cadance would help, but I’d have to be so careful. If I read her wrong, or even if she got the smallest inclination that things weren’t going to plan… she’d betray me to Sunlander. I’m sure of it.”

“What about Flurry?”

“Flurry’s in.” Twilight grinned. “I’d like to think that she’s got a good heart… but I’m pretty sure that it’s just her teenage ‘buck the world’ attitude. But she and I have been working together for months now.”

Night Light smiled. “See? There you go… you’re already on your way.”

“But I did the math, Dad. I’d need at least five super-alicorns working together to beat Sunlander. More if Cadance and Luna were backing her up.”

“But… there aren’t five alicorns.”

Twilight stiffened. “That’s the problem. We’d need to make more.”

Night Light clicked his tongue. “Celestia is the only pony who can make someone an alicorn.”

“Correct. But not entirely correct.” Twilight seemed to be getting more and more nervous. “There was one incident 18 years ago… an entirely unexpected pregnancy and the birth of a brand-new alicorn.”

“Flurry.”

“Yeah.” Twilight sighed, “If we can get two or three new baby alicorns, raise them in secret away from Celestia… then maybe in twenty years or so I might have a chance at overthrowing her… at saving history.”

“Wow.” Night Light breathed out, leaning back on the bed. “That’s a long-term plan. And what it requires from you… from Flurry. Maybe this isn’t your fight, Twilight.”

Twilight shook her head vigorously. “I can’t. I can’t just give up. Not if there’s even a glimmer of hope. I have to try. For everypony.”

Night Light smiled. “That’s my girl.” He leaned over and hugged her, tightly, strongly. “And I’ll be here, ready to help you however a silly old stallion can. For whatever that’s worth.”

Twilight didn’t return the hug. She looked ashamedly down at the ground, touching the tips of her hooves together nervously. “A-actually Dad, you can help. That’s why I asked you here.”

Night Light’s ears pricked up. He took on a grim, determined look. “Anything.”

“W-w-well… It seems… oh gosh, how do I even explain…” Twilight seemed entirely flustered.

“Out with it, kiddo.”

“Well. A new alicorn baby isn’t exactly a common thing. It’s only happened once actually.” Twilight tapped her hooftips together nervously again, “Flurry Heart was born to Cadance and Shining Armor. It’s the only time that an alicorn has ever gotten pregnant, in all of recorded history.”

“Huh.”

“Yeah, I checked every archive I could get into. It wasn’t like I could ask Luna or Celestia without raising suspicions. Turns out, the pair have had plenty of husbands over the millennia. But no foals, no pregnancies.”

“So how—”

“Shining. Shining Armor.” Twilight sighed. “Something about him was special enough to break through, to make the first biologically produced alicorn in all of history.”

Night Light adopted a wry grin. “I guess I should feel a bit proud of my boy. Strong genes.”

Twilight’s blush deepened. “I think so too, Dad. I think that power runs in our family bloodline, maybe because of our attunement to magic… I think you could also make an alicorn pregnant.”

“Oh?” Night Light hummed. But beneath his bemused face, the pieceswere starting to click into place, his mind already subconsciously processing the logic of everything… why Twilight was so upset… her plan to birth more alicorns… the lack of alicorn pregnancies. “W-wait…”

Twilight couldn’t meet her Dad’s eyes.

“Y-you couldn’t… no, nevermind.” Night Light chuckled nervously, his mind rejecting the thought that had been forming there.

“Dad,” Twilight whispered, not looking at her father. “I need you to impregnate me.”

There was a full ten seconds with no sound, with both ponies holding their breath entirely. Just complete stillness, the words hanging in the very air.

“W-what!?” Night Light coughed out. “No! I can’t!”

Twilight whirled up, her face a mixture of sheer embarrassment, determination, and frustration. “You have to! And… I hate to say this… you’ll probably have to knock up Flurry too: we’ll need all the reinforcements we can get.”

“Twilight I’m your father. I’m her grandfather!”

“I know that! I wish it wasn’t the case. But my research shows that this is our best bet. I ran all of the calculations, I did the genetic and family lineage thaumatological testing.” Twilight began to lecture, a psychological safety-release mechanism. “Obviously, the best candidate would be Shining… but he’s firmly in Cadance’s grasp. There’s no way Flurry or I could get access to him without alerting Cadance, who’s still a wildcard. I can’t take that risk.”

“T-Ttwilight—”

“And from the studies I’ve run, I’m fairly certain that you’d have the same power. I looked at all the other possibilities. Uncles, cousins, other offshoots… different family trees with similar magical characteristics to ours… nothing comes as close in terms of percentages besides you, Dad. You’re our best chance.”

Night Light stood up, backing away, his face starting to panic. “I-I can’t do that to you, Twilight. Make you bear my foal!?”

Twilight’s teary eyes appeared once again. “I know how hard this is to hear. Imagine how hard it is for me to say. Now you know why I’ve been so upset.” Twilight sniffed, wiping her left eye before it could actually leak into a tear. “I almost felt a bit of relief when you were saying that you’d do anything to help me…”

Night Light shuddered, the shame of so quickly betraying his words from only moments earlier being thrown in his face, though inadvertently. It was true that he meant them when he’d said them. He was ready to die for his little girl. Ready to suffer through the worst, most unimaginable pain. Anything but this.

But…

If this is what she needed.

If this was what she was actually asking for. If this was for her to save Equestria.

“I… Okay.”

Twilight’s head jerked up, half-surprised. “R-really?”

Night Light nodded, solemnly. “Yes. I guess I’d… uh… have to…” he blushed, looking down at his hooves, “...get you a... sample? Do you have something you want me to store it in?”

Twilight blinked, her frown returning. “Oh.” She shook her head. “Oh no, Dad.“ In-vitro fertilization won’t work, not from what I can tell. The act of sexual intercourse is essential to breaking through whatever guards an Alicorn’s womb.”

It felt like a sucker punch to his gut. It was one thing to have Twilight bearing his incestuous foal. But to actually have to have sex with her!?

To stick his stallionhood into his beloved little filly? To fuck her and flood her with his seed?

He almost stumbled.

He caught Twilight’s eyes again as he just managed to avoid his stunned collapse. Those big purple irises… so desperately sad, and scared. Taking this on meant so much to her. He could see that. She wore the weight of the world’s troubles on her own two shoulders, like she always had, even before becoming a superheroine.

She would do anything to save her friends, her people.

And it must have been the hardest thing in the world for her to ask this of him.

And asking was only the first step of so many… first this, then pregnancy, then bearing the child, raising it, then confronting Sunlander… and of course the inevitable challenges of cleaning up after the end of the tyrant’s reign.

His daughter had already committed herself to a lifetime of miserable service, fear, and challenge.

How could he, asked to do so little, deny her?

“O-okay” His mouth managed to move, though he could scarcely believe the words he uttered.

“Okay,” Twilight responded, sniffling, nodding her head.

“So… when should we, uh…” Night Light blushed.

“Right away.”

Night Linked coughed, blinking. “R-right now? Are you sure?”

Twilight nodded. “I’m at the peak of my cycle right now. And I’m not getting any younger. Neither are you, Dad. Each passing moment reduces our chances.” She grimaced. “I’m sorry to say, I’ll probably need to get you to meet with Flurry as quickly as you can after tonight.”

“She’s barely eighteen!”

“Thank the Goddess she’s at least that, Dad,” Twilight grunted. “With what’s on the line, as long as she was ovulating I’d be asking you to do the same. Stallions become less and less fertile as they age.”

“Ah. I… never mind. Let’s just focus on you for now...” Night Light gulped. “...That’s enough.”

“Mhm,” Twilight grunted her reply, stepping up from the bed, and turning around.

Night Light could scarcely believe what Twilight was doing right in front of his eyes.

The purple alicorn took a steadying breath, planting both forehooves on the bed and gingerly adjusting her rear hooves to spread her stance — adopting a wide, balanced posture with her hips tilted upward that was unmistakable.

Twilight glanced over her shoulder, but the moment her eyes met her father’s she had to turn away again; it was far too embarrassing to watch him watch her. She took one last steadying breath, then flicked her dock up.

Night Light swallowed as the long purple and indigo hair of his daughter’s tail swept up majestically, like a matador’s cape draws the attention of the rampaging bull.

With the alicorn’s tail flagging up and out of the way, he had an exquisite view of his daughter’s plot. The sight washed over him like a splash of cold water—it was one thing to catch glimpses of other pony’s private areas in the everyday humdrum instances of day-to-day life. It was a common, almost daily occurrence.

But there was a world of difference between the accidental flash of a limited angle of somepony’s bits… and the full-on, unimpeded view of a presented backside.

The primitive part of his brain stirred at the sight, just as it was programmed to do… before being quickly counteracted by a flood of shame and guilt. This was his daughter’s body!

But it was too late, the image was already burned into his mind.

Her sumptuous, toned buttocks. The pert, upright dock, with its smooth concave of skin.

The dark-black pucker of her tailhole, a quivering ring of muscular flesh, proudly jutting out like the forbidden rosebud it was.

And then her marehood…

Night Light had been a family man for most of his life. After his wild college days, once he’d settled down with his beloved Twilight Velvet, he barely even glanced at other mares... so it had been some time since he’d seen another mare’s lower lips.

Just the fact that they were so… plump. Swollen and puffy, the outer labia pushing against one another, looking so incredibly tight. The dark-purple hue of the engorged lips were so dark they were almost black.

And just below Twilight’s marehood, he could see the swollen mounds of her hanging teats, something that he’d never seen on Velvet, who was a less-well endowed mare. The plump mammaries were each tipped by two pink-purple nipples, each swollen to eraser-tip size.

The whole look and feel, all the subtle differences from his wife… was all so exotic.

Even his highly-tuned nose picked up the strangely different perfume — a hint of lavender instead of Velvet’s blackberry scent.

And that deep, ancient part of his mind stirred again. Evolutionary programming ramping up with excitement at the thought that he might be spreading his genes to a new, different mare… sending a little skip-thump through his heart that reverberating down to his loins...

...Before being instantly suppressed as his conscious mind snapped back to the forefront. This was his daughter. This was Twilight Sparkle! The filly he’d bounced on his knee, that he’d carried on his shoulders to the Canterlot museum. That he’d changed the diapers of for Godesses’ sake!

He wrenched his head away, trying not to look at his daughter’s plot, even though his eyes flicked sidewise, again and again, drawn back to the exciting view.

“Uhm. Just… give me a second Dad,” Twilight squeaked. “I… have to get ready.”

“S-sure. T-take your time,” Night Light responded, still trying and failing not to look at his daughter.

“It’s… it’s actually key to ovulation and conception that a mare is in a well warmed-up state of arousal prior to penetration. Studies have shown that not only does increased lubrication result in fewer injuries and strain, but female orgasm causes cervical dilation which increases semen volume in the uterus.” Twilight’s nervous mumbling had gained confidence as she went along, and now she was nodding her head and tapping her hoof, as if she were teaching a classroom hall of university students. “Further, mare ejaculate has been shown to have glucose, hormones, and even thaumatological properties that foster spermatozoa motility and overall success ratios—”

“Twilight.” Night Light interrupted.

“Y-yes?”

“You’re lecturing.”

“Sorry.” Her ears folded back and she glanced over her shoulder meekly. Once again, as soon as she saw Night Light’s eyes staring at her completely exposed bottom, she had to turn away and stare at the bed. Her tail twitched, just barely resisting the urge to clamp down and shield herself. “I’m… I’m a bit nervous.”

“Me too.” Night Light chuckled grimly. “You always did start to lecture when you were nervous, I always thought it was cute.”

A shudder went through Twilight, her wings shifting in embarrassment. She was obviously dealing with the conflicting joy of being called cute by the stallion about to mount her… and the fact that said stallion was also her father.

“A-anyway… I have a… spell I like to use.” Twilight squeaked. “And some… uh… l-lube.” Her horn ignited.

The drawer next to Twilight’s bed opened, and a purple telekinetic field lifted a small glass bottle, popped the silver-tipped top and hovered it over to her plot. Out of the corner of his eye, Night Light watched as his daughter skillfully tipped the bottle over, aiming the open end at a spot just under her dock.

Clear, viscous liquid ran out, slickly streaming around the circumference of her ponut, before meeting at the bottom of the circumference running down over her plump purple lips. The oozing drip disappeared from sight momentarily as it slid between the labia, into that hidden pleasure-cleft… before reemerging on the other side to drip onto the bed.

“Sh-should be enough…” Twilight whispered, likely to herself.

The purple kinetic field put the bottle back on the nightstand, then it began to hum.

The buzzing sound filled the bedroom, thrumming with intensity like a hive of bees. Night Light watched the glow slowly hover over… then press up against Twilight’s marehood.

“Mmmf!” Twilight stifled a moan, biting her hoof.

There was no doubt about it… Night Light could see the strange micro-blur at the edges of the field where it was pushing into his daughter… this was a high-frequency vibration.

There was no way he couldn’t watch.

The strangeness of the transparent field as it pressed into his daughter’s flesh, squishing her tight lower-lips as it hummed and thrummed—it was impossible to look away.

Up and down, Twilight plied the field, with the skill and familiarity of somepony who’d done it many times before. Night Light knew that unicorn mares had such ‘private’ spells in their repertoire… vibration spells were among the most mastered, usually by teenage colts and fillies… for obvious reasons.

But he’d never seen masturbation like this himself. Velvet certainly never did this in front of him.

“Ahn… mmf!” Twilight’s groans were getting deeper, more real. The field was starting to press further inward with each stroke.

Again, Night Light felt that awful pull between biological arousal and moral shame. With each moan, his ears flicked forward with excitement… before flicking away as he remembered those moans were coming out of his innocent baby girl.

“AH!” Twilight’s back arched.

For the first time, Night Light saw pink. Brilliant, hot-blooded pink.

Twilight’s marelips quivered and tightened, clenching and squeezing with a strength he’d never seen in Velvet. Like a blooming flower, they parted, winking open to show his daughter’s boiling, sticky, interior.

His eyes almost crossed as they focused in on Twilight’s lovebud. The bit-sized, swollen clitoris was like the dot at the bottom of an exclamation mark, throbbing twice in the open air before being drawn back into its hidey-hole.

“Mmmm….!” Twilight’s hum was in tune with the buzz of the vibration spell.

Night Light felt himself drop. The tell-tale kiss of air against his stallionhead as it started to slide out from his sheath. Stop! Stop! He clenched his lower gut, trying to stymie the physical signs of arousal as he felt a nauseous wave of incestuous shame overcome him.

Another wink.

Now Twilight pressed the field into herself.

It was as if an invisible stallionhood was parting her vagina, opening herself wide for all to see the tight, twisting interior of her sex. Her clit was jammed out by the field now, buzzing in a blur as it was stimulated by the high-frequency pulses of magic stimulation.

“Ah! AHN! Y-you’re… you’re not watching… r-right D-da AHN… Dad?” Twilight’s mix of groans as she glanced over her shoulder at him was intoxicatingly sexual.

“No.” Night Light lied. His eyes were glued to the spectacle before him.

Despite all the guilt, it was just… incredibly erotic. And that damn scent was building up! It was thick, condensing in the back of his throat and dripping down into his belly.

“B-buck!” Twilight’s body began to convulse, her wings flickered. Her bottom began to gyrating in and out with a rhythm and range that was unmistakably simulating sex. “Dad! I’m… I’m… FUCK!”

It was so odd to hear her swear. He wasn’t sure if he’d ever heard his daughter swear.

He’d never seen her cum, either.

Both of those facts had just changed.

The first thing he felt was a splash of hot liquid against his lower forelegs, as he watched his daughter’s tight sex begin to squeeze, contort, and leak. The little spray escaping the strange magical insertion turned into gushing streams. It was almost as if somepony had inserted a glass dildo into Twilight — the shimmer of magical energy barely distorted his perfect view of her hot-pink interior spasming and writhing within.

The pungent splash of marecum shot steaming through the air, with enough force to splatter against his chest. Velvet had never squirted like that: she was more of a trickler. Twilight was a whole different kind of mare.

“Ahnn… f-fuck…” she mewled, her body humping up and down as she rode out the last vestiges of her powerful orgasm. Her wings extending and flapping a warm wash of her musky pheromones over him, almost hiding the delicate whisper that slid from her lips at the last moment. “D-dad…”

Night Light snorted, quite involuntarily, his nostrils widening and his upper lip curling in biological response to the thick atmosphere of sexually charged, in-cycle, and highly fertile femininity. It wasn’t just sticking to the back of his throat now… it was suffusing his fur… it was like he was in a steam room filled to the brim with Twilight’s sexual signals. His daughter’s signals.

He felt himself pour out of his sheathe. Faster even than that one time he’d rushed to the toilet after holding it in at a school recital for an hour. His limp stallionhood drooped all the way out of its protective covering, sliding inch after inch toward the ground in raw, autonomic reaction to the situation.

It still made him feel like a first-class pervert.

This was his little filly!

How could he drop for her?

“Mmmf… ah… oh…” Twilight groaned, her speech coming back to her. She glanced over her shoulder, quickly seeing that he’d been in the ‘splash zone’ to her pre-coital preparations. “Oh. Oh my gosh! Oh jeez, I’m… so sorry, I didn’t…”

Twilight looked mortified that she’d just doused her dad with her arousal, his speech trailing off as she sank into her own embarrassment.

“It’s OK, sweetie.” Night Light quickly mumbled. Even though it really wasn’t. He’d say anything to make her feel better. Do anything. Even that.

A couple of moments passed, the only sound in the bedroom being the pitter of a few plinking drops of steaming mare juice dripping to the floor, Twilight's soft breathing… and her father’s snorting inhalations.

“I’m… I’m ready,” Twilight squeaked, daring to look over her shoulder at him again. As she did so, her voluptuous butt shifted ever so slightly, tilting upward in an unmistakable request to be filled with a stallionhood.

And then she winked. And not with her eyes.

“Ah.” Both of them said it at the same time.

Night Light was trembling as he rose up onto his hind legs, his body acting more on muscle memory from his experiences with his wife than any conscious action on his own part.

He reached down with his left forehoof, gripping himself and slinging up his drooping stallionhood. It felt heavy and thick in his hooves, but not hard. Like a dreadful bludgeon.

Twilight’s eyes were on him now. And it was his turn to look away. He was sure his daughter had seen his stallionhood out of its sheath over the years — catching him in the shower accidentally, or on camping trips walking into him when he was relieving himself in a bush.

But this was so, so different.

The burning gaze of her big purple eyes was fixed right on his penis. And there was no mistaking the thoughts running through her head. She must be thinking about its shape, its size, its color… how it would feel inside her.

Inside his freaking daughter!

Night Light groaned with a sigh as he looked away from her face, trying to focus on the wall.

“Is… is something wrong?” Twilight asked, mumbling her own embarrassment.

Only everything about this entire affair. “Hm?” Night Light responded.

“You’re… uh… you aren’t… well… up?”

Night Light gulped, blinking to clear his vision. There was a strange mixture of shame at being unable to perform as a stallion mixing in with the shame of incest with his daughter.

“Oh… uh, I… just need a minute. I don’t rev up quite as fast as I did when I was a colt.” Night Light grunted, before starting to move his hoof.

“It’s… it’s not me, is it?” Twilight whispered, blushing.

Hay no it’s not you. You’re drop-dead dripping with sexiness, Twilight…. But also, hay yes it’s you, because you’re my freaking daughter!

Night Light could see the conflict in Twilight too, the uncertainty, the hesitation. The lack of confidence. The last thing he wanted to do was make his little girl feel anything other than gorgeous.

“No, Sweetie!” Night Light blushed. “Your dad’s just getting a bit older is all.”

He clumsily continued to stroke himself with his hoof. He didn’t want to go all out with his own preferred technique: using both forehooves and some magic constriction around his base to pump himself up. He felt paralyzed by his daughter’s glance… so all he could do was stand there and awkwardly stroke his drooping sausage of a stallionhood.

“It’s perfectly normal for older stallions to take longer to achieve a full erection, Dad. Nothing to be embarrassed about. Low or high blood pressure, salt in the diet, changes in your hormonal balances as you age, the amount of sleep you’ve gotten, thaumatological systems being more harmonically tuned to mental instead of physical processes. It says nothing about a stallion’s virility.”

“Twilight.”

“Yes?”

“You’re lecturing… again.”

“Sorry.”

They both had a little chuckle, a precious moment of levity.

But after it passed, he was still just petting his thick, drooping snake. While his daughter watched him. Intensely. Her eyes boring into his penis, following his masturbation technique.

Goddesses spare me. Anything!

“Can I help?”

“Sure.” Anything but that! He’d answered almost automatically, his brain still having trouble functioning. He would have said ‘sure’ blindly to anything Twilight said. He was paralyzed with indecision.

Twilight moved, turning on the bed to face him, bringing herself mere inches from his junk as she sat on the edge of her bed.

Her horn glowed a purple hue, thrumming with a brief crackle of powerful energy. She glanced at him briefly before a flicker of light shot from her horn…

Right into his balls.

For a moment Night Light felt winded, like it was the combination of somepony hoofing him in his low-hanging coinpurse while hitting him with the electric force of a cattleprod. He winced, closing his eyes stupidly as an ineffective shield to the expected flood of nauseous, almost vomit-inducing pain that all males knew too well when their precious orchids were treated poorly…

Only to not feel that telltale flood at all.

Instead, it was like a warm thrum of heat, starting in his loins and blossoming up like a balefire mushroom bomb-cloud through his gut.

Feelings that he hadn’t felt in years, not since he was a young fraternity colt at Canterlot University tickled his system, reigniting old nerve endings that he would otherwise have thought were long dead. Old thaumic pathways, which linked the stallion’s biological and magical stores, which had withered and shut as he aged, flared back open, streaming energy back into his reproductive system.

He felt like a colt who’d just found his first teat-magazine.

“Flurry taught me that one.” Twilight wryly grinned.

Beads of sweat were popping on his forehead, and he could feel his heart rate starting to skyrocket. His heart was pounding now, each thump reverberating through his eardrums.

He felt incredible! He felt powerful! Stallionly. Masculine.

He felt virile.

And then he felt Twilight’s hoof on his stallionhood.

His eyes darted down, locking onto the point where his daughter had just touched… him. He only just managed to avoid the urge to jerk away.

Twilight was looking right at his stallionhood, inspecting the obsidian sausage. The frog of her hoof slowly slid down his rapidly engorging penis, feeling almost cool against the surging heat that had spilled into his genitals.

“It’s actually just as important to lubricate and prepare the stallion. Far too many mares take their partner’s penis health for granted, and there’s actually a significant risk of abrasions particularly at the start of intercourse.” Twilight mumbled out a lecture, likely a textbook paragraph she’d memorized, as she poured more of that bottle’s contents out onto his shaft.

He hadn’t even noticed her levitating it back up again.

It warmed and slicked him as Twilight gently massaged it into his dark flesh.

Night Light felt his nostrils flare, as new thoughts began to race through his head. Flashes of him mounting and rutting Twilight, of sticking himself deep into her body, of biting her, mounting her, rutting her.

He wasn’t sure where they were coming from—moments before his conscious mind had been firmly against the tremendous parental sin he was about to commit. But Twilight’s spell, her hoof, the warming touch of her lube…

Each thought of guilt was quickly counter-flashed in his mind with memories of wanton sex, of how good the act felt, of the need to mate… and more and more he was replacing the mare in those memories — substituting the gray coat of his wife with a lavender purple.

“Oh... wow, Dad.” Twilight’s breath washed over his stallionhood.

He was becoming erect.

His penis began to stiffen and swell, faster than he ever remembered, even in his youth. Great, thumping pulses of blood filled him, making the veins on his shaft pulse and throb out with vigor. His medial ring began to expand, as inch after inch of black flesh grew and assumed its rigid, sex-ready position.

“That’s… uh… I think that’s a couple standard deviations beyond average. According to the literature I’ve seen on stallion-size, at least.” Twilight’s hoof was still sliding up and down his length, the journey taking a few seconds now, despite her quickened pace. “Seventeen, maybe eighteen inches. If you consider the normal distribution around a mean of…”

Twilight was rambling now, blushing so hard that steam might be coming out of her ears. Night Light noticed her eyes flicking all over the room, doing everything they could to avoid looking at his face… all while her hoof continued to pump him, his stallionhood quickly achieving its full, throbbingly erect state.

“Twilight,” Night Light grunted. His thoughts were pounding now, a mixture of childhood memories of his beloved daughter: her first bike ride, consoling her when she scraped her knee, the day she went to magical kindergarten, her admission to Celestia’s school… and a mixture of the hot, sexual alicorn princess stroking him off, of her dripping nethers that had winked and begged to be filled…

Of just how hard he was going to buck her.

“S-sorry… I was lecturing again,” Twilight squeaked, her hoof slowing. “You’re just… really impressive. Mom’s a lucky mare.”

“Thanks.” Night Light smiled. How was he supposed to take a compliment about his stallionhood from his daughter? They didn’t teach you how to do that in any parenting books he’d ever read.

“You’ll need to be careful when you… uh… when we…” Twilight’s eyes had met his. All at once, they were suddenly father and daughter again. All their conversations and jokes around the dinner table, all those Hearthswarming mornings opening presents. It all came rushing back at the sight of that familiar face.

Suddenly his dick being in Twilight’s hooves felt very awkward again.

Her hoofing slowed briefly, and she swallowed nervously and let out a little laugh, quickly looking away. He tried to do the same, squeezing his hip muscles a little bit and making his stallionhood bounce in her hooves.

“Y-yeah, you should know… it might hurt a little bit at first. A bit of a pinch. Might be some blood. That’s normal.”

“Dad.” Twilight scoffed, her eyes rolling as they stared at his junk. “I’m… I’m not a virgin. Heck, I’m pretty sure Flurry is not a virgin. I’ve been with other stallions before, Dad.”

Night Light blinked. Obviously, this was true. But he’d just never thought of that part of his little girl’s life before. Never thought of what she might do in her bed with her coltfriends. Never thought of her sexually.

Until now. When she was hoofing him off. When moments earlier she’d arched her back, begging to be mounted and plowed into that bed. By him.

“O-oh.”

“Flash Sentry and I… well, he was my first,” Twilight mumbled.

He’d never liked that punk. Lazy layabout who had coasted in the guard on sentry duty.

“But he… uh… he really wasn’t your… uh… size.” Twilight grimaced, as she finished a particularly long stroke, as if marvelling at just how much of him was going to go into her. “Nopony, I’ve been with is…”

“I’ll be gentle.”

“You don’t have to be too gentle,” Twilight quickly quipped in response before realizing what she said, her ears folding flat in embarrassment. Asking her Dad to rut her hard was just another moment of pure mortification to add to tonight’s pile.

“O-ok,” Night Light responded, then reached down, putting his hoof over Twilight’s to stop it. “Sweetie… I think I’m ready.”

“Ah. Oh.” Twilight nervously looked up at him, her eyes uncrossing from the massive stallionhood that had been dangling just off her nose. It was clear she was functioning on quasi-autopilot as well. Both of them were more nervous than first-timers, fumbling about in the dark. “I… I just don’t know if I can—”

Oh, thank the Goddesses. Night Light’s conscious mind screamed out, this potential escape trajectory being a perfect way to pump the brakes, to slow this speeding locomotive of bad decisions before it flew of the cliff… Even though there was now a shameful feeling of disappointment at not going all the way that he was trying to stifle.

“If I can do oral sex for you first...” Twilight mumbled.

Oh.

“You’re… pretty big, and… it’s a little embarrassing to have my Dad watch me sucking a stallionhood.” She apologetically glanced up at him, her ears still folded back. “I know it’s your stallionhood, and I’m being ridiculous, and… gah… I just think I’d be more comfortable facing forwards!” She squeaked, her wings flapping. “It’s… it’s harder than I thought to do this with you. Maybe next time I can do oral.”

Next time!?

Twilight misinterpreted his expression of blinking surprise. “Here, I can give it a little kiss.”

Stunned, Night Light was unable to react as she leaned forward, daintily pursed her lips, and planted a little peck right on the tip of his penis. It was just like a goodnight kiss, something he’d received from the filly a thousand times and more… except that it had the briefest little flicker of the tip of her tongue…

And it was placed squarely on his drooling stallionhead.

“Mm.” Twilight leaned back, releasing his stallionhood for the first time in minutes. Her tongue was swirling in her cheeks. “It’s funny… your taste… your smell. It reminds me of your study back home. Warm and comforting, oaky… masculine. Safe.” Twilight twiddled her hooves and looked up at him, fear in her eyes. “I’m… I’m sorry about this Dad.”

Night Light swooped forward, scooping her up in a big, tight bear hug. He didn’t care that this was driving his erect stallionhood into her belly, the force of his hug squishing it between their two chests.

“Sweetie. Don’t you dare apologize for anything. I love you. And none of this is your fault.”

Twilight melted in his arms, taking him back in his hug, leaning her muzzle into his neck, snuggling into him with a little purr of contentment.”D-dad… thanks. I… I didn’t mean for this to happen… but I’m glad that if it did, it happened with you. You make me feel so safe.”

“Shh…” Night Light hushed, patting her head gently.

They hugged like that for a few minutes longer.

Night Light tried not to feel too guilty about the fact his penis had only gotten stiffer during their hug. He was supposed to be their comforting his daughter in her time of need… and more than half his brain was dedicated to the sensation of his throbbing stallionhood pressing into her fuzzy belly.

“Heh. Still raring to go huh?” Twilight giggled into his neck. A moment later Night Light felt her hoof reach between them and adjust his large, masculine pride, shifting it to a spot that was more comfortable. “Your stallionhood was digging into my ribcage… sheesh, it’s big.”

“S-sorry.”

“Oh, no, not your fault!” Twilight squeaked, “That libido spell was probably a bit supercharged from the state I was in. It must be almost aching.”

Oh, Goddesses, you have no idea, sweetie. Each heartbeat felt like it was going to make him pop, he felt so erect.

“You know, a bunch of my friends had crushes on you, back in junior high.”

“What?”

“Oh yeah, Moondancer, Lemon Hearts… sometimes they used to gossip about whose Dad had the biggest stallionhood. You were always top pick.”

“Uh—”

“They used to tease me that any stallion with such a hefty ‘set’,” Twilight’s hoof slid down his erection and gave a gentle caress to his balls, eliciting a nervous swallow from Night Light, “...had to be packing. Little did they know how right they were.” She giggled.

“I always tried to chase them off when they’d joke about flipping their tails up for you.. Even if they were teasing, I told them that ‘my Dad belongs to me!’” Twilight paused. “Little did I know how right that would be.”

Night Light sighed, “Sweetie… I’ll always belong to you.”

Twilight pushed back slightly from their embrace, staring deep into his eyes. He was sure that he could see a little ember there, a smouldering fire not unlike what would appear in her mother’s eyes when she got in… ‘the mood’.

“I’m ready, Dad.”

“M-me too.”

Twilight slid away from him, once again taking that position on her bed. Planting her forehooves on the edge of her soft linen and shifting her rear hooves wide, bracing herself for the activity to come. “I… can we do it pony-style? I don’t think I can handle having you watch my face while we… buck.”

Me neither.

“O-ok.”

“Maybe next time.”

“S-sure.”

“We can do positions you like too, just nothing too crazy.” Twilight nervously chirped, her anxiety clearly on the rise again, as she looked over her shoulder at him. “And no anal, you’re too big for that. Sorry, Dad... Oh, and also obviously anal sex doesn’t make any sense with the goal we’re trying to achieve, although there was one study in the Yakyakistan Medical Journal about fertility rates post anal copulation that was—”

“Twilight.” He grinned as he interrupted her stream of consciousness rambling.

“Lecturing?” Twilight blushed, her ears pinned back cutely.

“Lecturing.”

“Sorry…” She took a deep breath, her rear hooves clopping against the crystal floor as she stood wider apart and arched her butt upward. “OK… I’m ready. Let’s do this.”

She flipped her tail up once again.

Again, Night Light’s senses were assaulted by the cavalcade of overwhelming information flowing into them.

The tantalizing sight of her gorgeous plotside which now had sticky gossamer strands of mare-cum connecting her marehood to her inner-thighs. The squelching sounds of her purple lips blossoming to wink their pink insides at him. The musky, thick smell of an overly aroused female in heat… Hay, he could even taste his daughter’s foggy arousal as it condensed out of the very air!

All that was missing was the sense of touch.

And that was about to change.

Night Light strode forward, approaching his daughter’s shapely posterior like a champion batter stepping up the plate. He reached out with his hooves to grip her hips, steadying himself as he tried to align his bobbing tip with her sex.

That’s when his shaft first touched her. His engorged, jet-black, throbbing penis touching his daughter’s butt!

And, Goddesses damn him, did it ever feel good.

“Ahn!” A powerful impulse, right from the instinctive depths of his brain drove his hips forward and the sultry contact, sliding his sausage up the cleft of Twilight’s bottom… grinding his veiny shaft against her needy marehood and plump tailhole as his stallionhead missed its mark and slid through her tail up to the middle of her back.

“D-dad…!” Twilight groaned, her wings flickering. Her groan was heavy with need.

“Sorry, sweetie,” He mumbled, feeling the hot, wet kiss of his filly’s winking marehood against his balls.

It was strange — it was like he was two ponies in mind now.

One was Night Light, father of Twilight Sparkle. Proud parent. Mortified at what was happening. At the fact he was mounting his little girl. At the fact that her boiling sex was pressed against him. At the fact, he was about to push inside her with his stallionhood…

And the other was that of a stud. A champion of breeding. A king of the open plains, with a harem of breeding mares that flagged their tails as he passed. A snorting beast of a male that knew how to satisfy his mare.

And one of these two minds was currently in the driver’s seat of his body.

He re-adjusted himself, stifling the powerful urges to thrust forward as he slid his long, thick stallionhood backward, bumping along Twilight’s back, over her tailhole… and positioning it against the hot, drooling entrance to her inner-depths.

“Dad!” Twilight squeaked, tensing up as his cockhead dug into her squishy, plump labia for the first time, her head craning upward in barely restrained desire.

“Here I go, baby,” Night Light moaned out his bedroom name for Twilight’s mother without thinking, as his hips once again fired nearly automatically.

There was a moment of stunning resistance — something he hadn’t experienced with Velvet for decades, the matron’s body having become accustomed to Night Light’s size over time.

Unlike her daughter.

The purple lips strained and stretched under the pressing force, trying to unfurl as wide as possible to accept his hoof-thick, bulbous head… his upper-shaft nearly bending at the tremendous pressure building up as he tried to push into her tight marehood.

“Ahn~!” he heard Twilight yelp.

And then he was in.

His fat cockhead popped into Twilight’s body, embedding the first three inches of his stallionhood into her sex.

Into her tight little pussy.

He was fucking his daughter.

It was like a velvet glove gripping all around him. Her tight, twisting vaginal walls molded themself around the knobby head of his throbbing cock, sucking in with vise-like intensity as they swirled with little convulsions around him.

“Mmmf!” Twilight grunted, biting her lip to avoid a scream. “B-big!”

“Buck, Sweetie… you’re really tight!” Night Light hissed through clenched teeth, trying not to lose himself in the pulsating pleasure of his filly’s gripping pussy.

The two of them stood there for a few moments, with only the sounds of their breathing accompanied by subtle drips and squelches filling the void, both huffing and puffing as they recovered from the initial penetration.

Night Light’s mind was a complete mess — flooded with adrenaline and excitement from the sensations and sexual stimulation… but also snapping back to the fact that he was inside his daughter, his little girl, experiencing her physically in a way that no father ever should.

What kind of father knew how his daughter’s pussy walls felt!?

Schlick!

“Ahn~!” Twilight’s sexual moans were far too exciting for his liking — this one came with a heavy clench, a milking grasp that culminated in a squirt of Twilight’s juices that streamed down the underside of his stallionhood in a hot rivulet of arousal.

“D-did you just…?” Night Light asked, unsure whether he wanted to hear that his daughter had just orgasmed on his penis.

“N-no, it was just a wink.” Twilight stammered awkwardly, “I… I’m getting used to how large you are… I think you can move. If you’re ready, that is.”

Night Light clenched his abdomen, making his cock stiffen inside her. The Goddesses knew he wanted to push deeper into her, every instinct in him screaming to bury himself in that delectable, intoxicating tightness.

But it was so awkward—with the state his mind was in, he felt guilty even with how much his hooves were touching her bottom. He was trying not to rest any weight on her at all, as if he could somehow manage to do this without getting intimate, physical… despite already being inside the most intimate place possible.

“Ah, s-sure, S-sweetie. It’s just a little, uh…” He hesitated again, hovering his hooves over Twilight’s backside.

She glanced over her shoulder briefly then blushed and looked away. “S-sorry again, Dad. I know… ahn~!... I know you wouldn’t want to do this with me. Maybe it will help if you pretend I’m mom, just call me Velvet.”

Night Light blinked. It felt like he’d just received a punch to the gut. He could sense the hurt in Twilight, the anxiety, the sorrow. She was so concerned about him during a time like this.

And to offer to have him call out the name of another mare as he rutted her, to replace her in his mind with somepony else? Even if that surrogate was his wife, and even if it was meant to avoid the guilt of this incestuous pairing… that was a coward’s way out.

That was him letting his daughter down.

What kind of a stallion… what kind of a father was he?

No.

No that wasn’t right.

It was time to buck up and bite the bullet. If he had to do this, if Twilight had to have this happen… if they had to save the world from an omnipotent tyrant… he was going to make it the best possible experience for her.

No more selfish focusing on his own guilt. He could be damned to Tartarus for eternity for this, but he would do it.

For his girl, for Twilight.

“Sweetie, no,” Night Light breathed, finally letting his hover-hoof drop and grasp Twilight’s lower back, tenderly caressing the small of her spine. “I’m doing this with you. My Twilight. My beautiful, brilliant, perfect daughter. I love you, Twily.”

“D-dad? Ah! Oh my gosh!” Twilight’s question died into an exhortation as he began to push into her body… gently and slowly enough that it wouldn’t hurt… but with a determined forcefulness that belied his desire to be in her, his hooves needing to grip into her buttocks for the purchase required to part her.

Inch after inch of his stallionhood slowly ground into her, his shaft stretching her purple-pink lips further and further apart as it thickened toward his middle.

He could see Twilight shivering, her head ducking and twitching with focus and concern as she took more and more of his size inside her.

“That’s my girl. That’s my good girl,” he cooed, rubbing his hooves up her back comfortingly, testing away the little knots and spasms appearing under her folded wings as his girth continued to test her body’s resolve. “Now the ring, Sweetie.”

His medial ring was pushing up against her tight entrance now. The protruding donut of flesh that rested two thirds of the way down his length was a sudden jump in width on most stallions, but on a gifted stallion like Night Light, it could be a daunting feat for even a seasoned mare to accommodate.

“Oof! D-dad!” Twilight’s squeak had more than a hint of worry in it, “...th-that’s, I don’t know if I can…!”

For a moment, Night Light considered just using the twelve inches of stiff, thick stallionflesh he already had plumbed deep into the alicorn’s furnace-like body… considered just starting to pump and thrust using the upper part of his sex. The last thing he wanted to do was hurt Twilight, not while doing this.

But he’d made a commitment.

He was going to make this the best possible experience for her. And he knew how to do that.

“Shh… just a bit more Twily, I know you can.”

“It’s… it’s too… too b-BUH-IIIIG GAH!!”

*POP!*

Just as she grunted out, he gave a subtle half-thrust… and his ring popped into her straining, stretched pussylips. Immediately he felt her whole body ripple, like a stone had been thrown into the middle of a pond — flutters of muscular spasms tensing her back and limbs, fanning her wings in an elegant display, as if posing for the statue being chiseled in her honor. Just as they flapped open, a warm purple glow shone from her horn, followed by a shower of silver sparkles that crackled like a firecracker to the bed.

And then she soaked him.

A hot, wet, gush of pungent mare-nectar sloshed down his thick, black cock-base and matted the fur on his legs.

“Ahnnn….! Ahn….” Twilight groaned out two more times, before gasping and catching her breath.

“...”

“Okay, that time wasn’t just a wink.” Twilight’s half-giggle warmed his heart. She wasn’t as anxious now.

Now he could get to work.

Night Light began to pump backwards, slowly dragging his massive member back out of his twitching daughter, popping his fat medial ring out from her steaming interior with another wet squelch that shook her to the core.

And then, just as he could feel his knobby head beginning to stretch her tight lips, threatening to slide out of her body… he reversed direction, plowing back into her with vigor.

In less than a second, he’d rammed all of the removed length… and more. Using the momentum of his thrust, he was able to drive home some of the final few inches of his base, where his thickness began to approach the size of a cantaloupe.

“Oof!” He could hear Twilight’s breath knocked out of her from the sudden thrust. But he had no intention of slowing or stopping — he knew exactly what he had to do.

Buck her.

His slow, rhythmic see-sawing thrusts pushed in and out of her body and were with huge effect… With every grinding thrust, she squirmed underneath him like a worm in a bird’s beak, reactively tensing and melting in varying degrees as she mewled under the onslaught of sensation.

He was playing her like a fine instrument now, noting the similarities and subtle differences in her body’s reactions to Velvet’s… each passing moment giving him more information that he could use to extend her sensory experience just that little bit further.

“Ahn~! Oh… oh buck… Dad…! I’m close again!” Twilight’s grunting warning came between hurried half-breaths, as she tried to keep up with her body’s pleasure spikes. “Are… are you close?”

Oh, you poor little mare.

Night Light stifled a smirk. It had been a long time since he’d been with somepony other than Velvet, who’d long ago become accustomed to Night Light’s sensual skills. In fact, it was probably why she’d married him.

He’d almost forgotten his gallivanting days in university… and how stunned his female co-eds were at his stamina and prowess in the bedroom. Few mares would experience more than a few frenzied thrusts and a wet finish — sometimes in under a minute. That same evolutionary drive that thrummed through every stallion also encouraged him to release his seed as quickly as possible, with little to no regard for a mare’s pleasure.

But Night Light had a very special talent.

As an officer in the Equestrian Guard, he’d been selected for every night mission because it was well known that his blessing had not been the ability to bake cupcakes, or paint pictures, or to tap dance… it had been a complete and total domination of the night.

No pony seemed to thrive during the night like he could — with the exception of Luna herself. Or MidKnight Noir or whatever she was calling herself.

But his domination of the night didn’t just apply on the battlefield.

Night Light had the stamina of multiple stallions, the artful skills of a tantric master, the instincts of a sex-Goddess, and the equipment to back it up.

He’d been legendary among the mares on campus — no sophomore year could be called complete with at least one evening with the fabled Night Light.

Velvet had snagged him, and since then he’d honed his craft for her… a loyal husband that could make her hooves curl. And with the passing of time, his craft had only been honed by her discerning needs and his advancing age… if he was being honest he could likely run circles around the colt that he’d been in those crazy university days.

And he was going to unleash all of that skill, experience, and talent… on his daughter.

“No Twily… you just let it all go… relax, sweetie,” Night cooed, patting her quivering rump.

“Ahn~! Dad, DAD! AHNNNN~!”

“That’s my girl.”

Night Light pet his daughter’s shoulders softly as she quivered and convulsed through her second orgasm of the night, creaming herself on her father’s cock. It had been some time since he’d mounted a pegasus, but he knew that wings could be particularly fragile through this extended state.

But he never stopped slowly, calmly rutting her… riding her right through the orgasmic cascade.

He grimaced at the milking, suckling pulls of his daughter’s vaginal interior — her body desperately trying to coax him to fire inside her, to release his genetic payload deep into her fertile marehood. It was pleasant, amazing even for him… but…

This was about her.

In and out, in and out.

He rode her, varying his pace and depth as he went… slowing as she peaked in her orgasm, quickening as she slowly came off her of her climax… drawing out the spikes of pleasure in his daughter, trying to transform them into a continuous wave of mind-melting sensation.

...

The seconds slid on into minutes, the minutes into a half-hour.

...

He was almost enjoying himself now. Almost forgetting the sinful, incestuous act he was performing, losing himself in the mastery of his craft as he tuned his sexual actions like a concert pianist about to play a brilliant rhapsody.

His hooves slid over and under Twilight’s body, sometimes massaging, sometimes gripping or pinching, groping her teats or stroking her mane… always trying to improve and satisfy Twilight’s needs before she was even aware of them.

“Mmmahn! Mmm-D-duh… dah!” Twilight’s wings shuffled again as she trembled into her seventh orgasm since they’d started, this one making her tail swish through the air, swatting wildly at his chest without intention, just raw, uncontrolled reaction at the surge of neuromuscular energy. “Dahhhhhhhddd….”

Twilight’s speech had become unintelligible nearly ten minutes earlier, after her fourth orgasm. The few times she’d glanced drunkenly over her shoulder at him he’d seen those heart-shaped irises, that lolling tongue, the drool caking the corners of her mouth, he knew that he’d flooded his bookish little girl's usually logically sound mind, unlocking a wanton consciousness she may not even have known she had.

She had long ago lost any pretension of anxiety. At times she thrust back into him, and times she groaned lasciviously… he could tell when she purposely squeezed her marehood, trying to pleasure herself and trick him into flooding her. She’d lost herself to the pleasure.

And he was only getting started.

…

The half-hour became an hour. Two… Three…

...

*PLAP PLAP PLAP PLAP PLAP*

The sounds of flesh on flesh were his metronome. The beat to which he was composing his symphony of pleasure.

The slapping sound of his hips smacking against his daughter’s had grown louder and louder over the past hour, not because he’d started to callously thrust with vicious, powerful intention… but because the warm, rosy-purple flesh was soaked.

He’d lost count of how many times he’d brought his little filly to screaming orgasm. The last number he remembered was fourteen, and that was nearly an hour ago, when the bed had finally bumped against the far wall, having been shifted slowly by the steady torque of his thrusts to grind across the room as he bucked his daughter’s plot.

Those wet, soaking explosions had drenched his lower body, as well as Twilight’s own plot, making the smacking sounds fill the room, their particular sharp staccato echoing with resonance off the castle’s crystal walls.

The only other sounds were of squelching, sopping suckles… Twilight’s plump pussy having entirely given up any semblance of primness, now stretching and lip-gripping with each pump, splattering and emitting obscene sounds as he rutted it into submission.

And of course, the sound of Twilight’s depraved, lusty nickers.

She’d gone through a few surprising transitions as he melted her mind… at one point even starting to recite the digits of pi while her tongue draped itself out of her lips, her eyes crossed and rolling wildly… he could barely make out the digits as she drooled over herself… it was like he’d rebooted her brain into some bizarre subroutine by overloading it with wash after wash of unending orgasmic neurochemistry.

Soon after that, she’d reached her current state. Devolved to it. She was making sounds that you might expect from a cave-pony, or even further back some feral-animal horse on the ancient Equestrian plains. Knickers, snorts, and whinnies.

He’d fucked his little girl back into the primitive part of her brain.

And he was getting close.

He knew he would have to end it, end it soon.

He’d already drawn this out far further than he ever had before, than he should have. Foolishly, he’d even wondered if he could just do this forever.

If he could maintain this nirvana state of sexual excess forever, they would never have to deal with the horrifying, guilt-ridden, life-altering aftermath.

She was already drenched. Her sweat had soaked through her main and tail, even through her coat… it made the purple strands of hair hang in crumpled almost-black strands that lay matted to her body. She’d even started to work up a bit of froth on her hindquarters, a tell-tale sign of heat exhaustion and a real emergency.

Her wings had become haphazard, twitching limbs a while back too. She looked more like a wounded duck trying to fly after being clipped with an arrow than a majestic alicorn princess.

No… he had to bring this to its conclusion.

Hay, he wasn’t even sure if he could keep going. He’d already broken through every limit. He wasn’t sure if it was the scenario, or perhaps some effect of the magical spell that Twilight had cast on him at the outset… but he was beyond desire, beyond willpower, beyond instinct.

He was getting almost raw with the stiffness of his erection, the sheer thrum of pleasure with each squelching thrust.

Now it wasn’t just about her anymore. His daughter.

It was about him, too.

“T-twily!” he grunted, shifting forward, slamming his forehooves down on either side of her drooling face, currently mashing itself into the covers of the bed.

He braced himself, his hooves sinking into the bed as he prepared to hammer… To satisfy the final needs of his own sordid, biological desires.

He drew back, dredging his thick, throbbing-black cock out of his daughter’s steaming depths, his hips now directly over top of her plot… and then he let his weight fall.

“AHN~!” Twilight’s muffled moan shrieked into the bedtop as he drove deeper into her than ever before, pounding down with the force of gravity to push the final inches of his girthy stallionbase into her twisting, spasming depths.

She was still so tight, so shallow. Yet she had already taken more of him than even Velvet ever had. The disgusting truth lingered in the back of his mind: his daughter might actually be the best sexual partner he’d ever had.

But all those thoughts were cordoned off right now, segregated to a tiny part of his brain… chained to a chair and muzzled, forced to watch as the far more powerful instincts of the virile, powerful breeding-stud ran rampant through his cortex.

He wasn’t having sex with his daughter… he was breeding his mare.

Night Light’s hips slammed down again, harder, driving another inch of his hoof-thick cock-trunk into Twilight’s stretched-open marelips. He felt the tip of his throbbing cockhead mashing against something deep, deep inside Twilight. Knocking at the forbidden final gate to the core of her femininity… her womb.

Again and again, he pulled back and let himself fall into her, furiously. So much of his thickness embedding in her that he pulled her hips up with him on each backstroke before the slickness of her quivering pussylips finally let him slide out of her.

He was really fucking her now. No clever tricks of rhythm or massaging hooves, no artful touches to keep her suspended in a state of consistent orgasm.

This was raw, meat on meat, fucking.

“Graaah!” A growling whinny boiled out of him, emanating from his gut—a furious, feral cry of frustration at not being able to fully rut his mare. That’s when he viciously slammed downward, driving with all the force in his hips.

“D-D-daaaAAAAAH-d!” Twilight’s neck craned upward for a moment to let her mouth scream out for her father as he hilted her.

Night Light felt that final barrier that he’d been knocking against falter, releasing its tight squeezing closure for an instant… and letting his fat cockhead pummel its way into his daughter’s womb.

The final inch of tremendous, veiny stallion-base slammed into his little filly. His heavy, swollen black balls swung forward, slapping up against her permanently-protruded clitoris as his groin met hers for the first time.

She’d taken it like a champ, his little girl. His full, whole stallionhood.

Completely buried, right to the hilt, in her body. Only a few earth-pony fillies had ever managed that: not even Twilight’s mother could take all of Night Light. That same filly who’d snuggled up to him for bedtime stories, that he’d played tea-party and dress-up with… she was able to accept every inch of his stallionhood, like a professional PornStable star!

But she didn’t last long.

Night Light saw the sparking purple glow up close, could smell the acrid gunpowder-sparks of the magical discharge, as his daughter’s eyes rolled wildly in another orgasm. This time she started to shake, tired muscles that had been exhausted with convulsive ripples for hours finally giving way, as she succumbed to having to support her father’s weight as well, her rear-hooves slipping out as she landed onto the edge of the bed, limp underneath him.

She was finished—utterly and completely rutted.

But he wasn’t.

He couldn’t stop now. Wouldn’t stop.

He knew what his job was.

Night Light dug in with his rear hooves, creating new hoof marks in the crystal floor to join the score of other scuff marks already there from the rest of the night's activity. He felt a snarl of angry determination form on his face, as he shifted his forehooves from either side of Twilight’s head to her shoulders, pinning her so that she wouldn’t shift again.

And then he started to pound.

*PLAP PLAP PLAP*

Furious, deep strokes.

*PLAP PLAP PLAP*

The entire length of his rigid, climactically-edged cock going all the way out… then all the way in…

*PLAP PLAP PLAP*

Dredging out squirt after squirt on each outstroke…

*PLAP PLAP PLAP*

Thudding a cock-shaped bulge out of Twilight’s belly on each in stroke…

*PLAP PLAP PLAP*

“GRRAAAHHH!” Night Light felt the tell-tale, final clicks inside him, the long-awaited, dreaded orgasm that would bring this fantasy crashing to an end… that would return him to the nightmare of what they’d done.

*WHAP! WHAP! WHAP!*

He thrust with almost violent intensity, as if taking out his rage and sorrow on the very act itself—determined that if he had to damn himself and ruin his daughter, he would do it with every joule of energy he could summon.

The slaps of flesh on flesh were viciously loud, both his groin and Twilight’s flanks turning rosy red with impact after impact.

*WHAP! WHAP! WHAP!*

“D-duh-Dadddeeeeee!” Twilight screamed out, throwing her head back so hard that it sent her soaked mane flying in a half tangled arc, sending a shower of her sweat splashing up to the ceiling.

She was cumming. Hard.

He felt her pussy clamp around him, as if she’d somehow sensed that he was close… or perhaps it was out of sheer desperation to finally coax the seed out of her stud, to end this prison of pleasure-torture before she was lost to its madness.

Her milking, suckling cunt-walls pulled at him with swirling, terrifying strength. Her cervix slammed shut, trapping his head inside…

And that’s when he flared.

“T-twILY!!!!” he roared out, looking down at her heart-shaped, wild eyes for a moment… before instinctively bending down and biting her neck.

His balls tensed, shooting up to his groin and mashing against his daughter’s bright-pink lovebud as they sent a rocketing pulse down his huge shaft, like a bulge racing down a cartoon firehose.

He felt his head blossom inside of her, flaring out into a knobby saucer plate, embedding itself deep into Twilight’s secretive uterine walls a mere heartbeat before he flooded her.

The wave of virile, frothing, blasting stallion seed was almost as potent as the wave of orgasmic relief that washed over Night Light, his own horn glowing a bright blue and firing off wanton sparks that bounced off the crystal walls.

Gushing, boiling cum splattered out of him, his first ejaculation lasting seconds… only to be followed by the next pulse, just as long, but thicker.

“Ahhhnnn…. Ahnnn…… ahn~!” Twilight mewled out with each consecutive spurt as he filled her insides with his incestuous seed. He wanted to reply, but all he could do was shut his eyes tightly, clenching into her neck with his teeth as the autonomic processes emptied the massive store of genetic material he’d built up over the long, passionate evening.

A sixth shot. A seventh.

Twilight’s groans continued as her belly began to bulge, not just from the huge, heavy flare of her father’s penis protruding through her… but from the sheer volume of semen being stuffed into her.

Her clenching cervix and his wide, knobby flare had combined to make a perfect plug, increasing the pressure in her womb as Night Light’s ejaculations drove more and more virile, extremely motive, steaming foal-batter into her.

A tenth. An eleventh.

She looked like Pinkie Pie after a cupcake-eating contest. Her belly pudging outwards like a small balloon.

A final, definitive twelfth splatter, just eking out of Night Light, who finally gasped a breath of air, releasing his daughter’s neck and leaving a bright-red hickey in his wake.

…

She looked like she was already a few months with foal.

…

Oh, Goddesses… with foal. That’s how she’ll look when she’s carrying my… our foal. Goddesses, what have I done?

Night Light moaned, unable to do much else as the wave of guilt finally crashed down, obliterating everything else in his mind. The moment he’d orgasmed, all those instinctive impulses had died away, clipped by the flood of ejaculatory release… leaving only his conscience in its wake.

The hours of sexual rutting.

The depraved, carnal knowledge of his little girl’s most intimate tics… of the feel of parts of her that he should never have even imagined.

The feral fucking he’d finished her off with…

And worst of all the fact that by the end he’d liked it. That he’d wanted to cum in her, to stain her… to break her… to breed her.

His daughter!

If he had the energy, he would have felt nauseous.

Instead, he only felt the swift curtain of black, exhausted sleep approaching him, even though his stallionhood was still stuck deep inside his filly, their bodies sandwiched in an unspeakable mess of sweat-stained fur, unspeakable fluids, and panting, aching muscles.

The only comfort as he slipped into unconsciousness a murmur from his daughter that just reached his soon-to-be unresponsive ears:

“W-wow Dad, th-that was amazing. I-I love you….”

Author's Note

Hey everyone, hope you like my take on 'The BOYS' set in MLP.

If you are liking it so far... please take the time to hit the thumbs up button! Makes a big difference!

Thanks!