Story by Custos
(Original posting 10 November 2024 on https://inkbunny.net/Custos)

Please don’t repost this story, let it remain in my galleries!
This story contains material for adults only, do not read if you’re a minor.
The material presented is fictional and for adult fantasy only.
The author does not condone any of the depicted illegal activity in real life.

——

Overwatchz commission: Taboo Development

It had been both the biggest and the most wonderful mistake of his young life at the same time when Karnok had knocked up his little sister a little under nine months ago. Left alone at home by their parents, with the then sixteen-year-old babysitting his then eight-year-old sibling Kelli, Karnok had finally given in to his most primal urges.

Being an edgy teenager lucario full of raging hormones, he had been playing sexual games with the little riolu for as long as he can remember. Little things when his puberty started around ten years old, like taking peeks at his sister’s tiny black fortune cookie when she got changed, exposing his erection to her when his parents weren’t around, and letting her suckle from his young boyish penis just like daddy when he nursed Kelli. Throughout their entire childhood growing up together, playing with each other’s genitals had become a normal thing. Their little secret from mom and dad.

The scent had hit Karnok like a ton of bricks, his nostrils flaring and his red pupils dilating as little Kelli had approached him after their parents had gone. Her adorable eyes full of trust puzzled and confused as she held her swollen little vulva with both her small paws, experiencing her first heat as she stood in front of her older brother on the couch. Asking why her body and ‘special place’ felt so tingly and hot, the little eight-year-old unable to stop stimulating her beautifully black glistening fortune cookie in front of the sixteen-year-old boy. Needless to say, Karnok’s reddish canine member had swiftly found its way inside the panting little girl’s body, slipping up between those two swollen little pillows of her cunny as his bulbous knot bounced happily and wetly against them, soon locking the both of them together for the better part of an hour as hot teenage seed was injected into the preteen girl’s hot little furnace.

The result of their taboo incestuous union went unnoticed for a relatively long time, with the girl experiencing the occasional morning sickness and such but which was set aside as stomach bugs by doctors. After all, a girl so young was at no risk of sexual activity, they thought. Until a test at six months pregnancy revealed the truth, and subsequent questioning lead to Kelli spilling the beans on her older brother. To state that their parents were furious would be an understatement. Karnok didn’t deny his sister’s words, for he loved her and would support her even when facing the consequences. Despite the confrontation of his parents’s words, the lucario’s shaft had emerged from his blue sheath and had defiantly stood proud in the face of their anger as soon as he heard he had put pups inside Kelli’s womb. Mom had been appalled, but in private dad would later entrust his son that despite his anger about knocking his little sister up, he was proud to see that his boy would not run away from his responsibilities.

Now, just a week or two shy of Kelli’s due date, both kids were nine and seventeen years old. Both still living under their parents’s roof, and sharing a bedroom now as they had been made clear that they’re considered mates for life now. It was the only way to save some face to the public and their community, not that Karnok or Kelli minded that one bit.

Pokemon don’t wear clothes usually, only for protection or accessorising, and none of the family gave heed to each other’s nudity as a natural result. Sex was to be confined to one’s bedroom, though, especially when mom’s around. A few times, though, dad had indulged his son and daughter getting frisky on the couch as he was watching television with them, the adult male a little more accepting of the situation than his wife. He and Karnok held intense eye contact as the teenager sheathed his impressive spear up inside his pregnant sister’s nine-year-old pussy right in front of their father. Though, no physical contact was ever made, dad’s erection had emerged from his sheath and the male had simply taken care of business as his children fucked.

It felt a little like a healing experience between them. Bonding between family over something that is as joyous as sexual pleasure and the expectation of a litter.

So too this night, as mom was out with her girl friends, and Karnok, Kelli, and dad are watching television as they’re comfortably nestled in their respective seats. The teenage lucario male and preteen riolu female together on the couch, and dad in his lazy boy comfortable chair. Their eyes glued to the bright screen, with the occasional comments and glances exchanged.

Kelli is a little restless, constantly shifting on her older brother’s lap as she doesn’t seem to be able to find a comfortable position, her small paws clutching her swollen stomach. The bump is beautifully rounded, with all over her small nipples going down the curve to her groin fully swollen and extended, as tiny drops of motherly milk suddenly starts seeping from one of them. Both Karnok and dad immediately pick up on the sweet yet mildly sour scent suddenly filling the air, their eyes darting to their sister and daughter as Kelli groans: “Ah. They’re moving so much. It hurts, Karnok…”

The lucario’s hefty teenage sheath gives a throb, plumping up a little underneath the squirming nine-year-old girl, and Karnok’s warm paws reach down to cradle his little sister’s bump containing their precious unborn children: “Oh. Yeah. I can feel that. They must be getting ready, lil’ sis.”

Karnok’s fingers gently pinch the offending tiny nipple as Kelli moans out in response, a few drops more of milky white liquid seeping out and over the teenager’s digits. The boy looks over at his dad in the comfortable chair, smirking as he can already see the older male’s pink tip emerging from his sheath. Just feeling glad he’s not the only one who finds the newfound situation incredibly erotic. The boy raises his fingers up to his nose, giving the preteen’s milk a few sniffs before gently lapping it all up. The flavour even more intense than the scent. Dad’s penis is now steadily emerging from the fat sheath between his legs as he watches his son lap up his young daughter’s nutritious motherly milk with lewd little smacks.

Kelli’s small tail starts wagging between her brother’s thighs despite the discomfort in her womb, brushing against his equally emerging pink canine tip as well: “Ah. M-maybe… Maybe they’ll calm down. If their daddy comes for a visit.”

The nine-year-old riolu blushes heavily, hiding her face behind one arm while the other still holds her pregnant bump. She and Karnok had given the act of him penetrating her so deeply his tip brushes the mouth of her cervix the lewd name of ‘daddy coming for a visit’, much to their own father’s voyeuristic delight. The paternal older male says nothing, simply letting his kids explore themselves as he quietly starts masturbating at the side. Eyes intently glued on his young daughter’s swollen glistening fortune cookie as it winks for her older brother’s intimate touch.

Karnok’s penis grows along the length of his little sister’s inner thigh, the warm slickness firm and impressive for a boy his age. With his beautiful sensitive knot revealed to the open air as Karnok pulls back his sheath over it, sighing in relief at the act. The boy’s hands slide up and down all over Kelli’s round stomach, teasing the many little nipples and massaging her pregnant bump before dipping down further and gently pulling open her chubby pussy lips. Revealing the intense soft and heated slick pinkness inside to their father just ten feet away.

“You’re winking, little sis. Maybe our daughters do need their daddy to tuck them in.”

A sonogram had revealed all three of their pups to be female, a delightful prospect to Karnok with only mild disappointment from both him and Kelli. They had wanted both genders, to have miniature versions of the both of them. But they could always try for a boy in the next litter, and they would love each of their girls immensely.

After fingering the little girl on his lap for a few minutes, Karnok’s digits completely soaked in Kelli’s natural juices, the boy unceremoniously brings the tip of his canine cock in position and gently grinds it between his sister’s labia. Exciting her even further before effortlessly sliding inside in one smooth push.

Dad is gripping his shaft tightly, the slick sounds of his masturbation complimenting the moans of pleasure of the nine-year-old girl filling the room. The scent of both girlish and masculine arousal thick in the air, inciting the three of them further along to share this intimately taboo moment between a father and his underage son and daughter. Kelli is positioned towards their dad with her small legs splayed wide, pussy fully on display as the black glistening fortune cookie is speared by Karnok’s youthful incestuous penis. Her many nipples proudly stiffening up even further as the movement inside her pregnant belly is visible to all involved. The horny seventeen-year-old lewdly whispers loudly for all to hear as his tip finally bumps into the mouth of the nine-year-old’s cervix.

“They’re getting excited to see their daddy, lil’ sis. Even before tasting yours, they are addicted to my milk. I can feel them wanting to welcome me in. Shall I give our daughters what they need?”

Kelli moans excitedly, her small legs flinching and twitching in frog-like motions in front of their dad as the older male can clearly see his son grinding his knot into the soft squishy pillows of his daughter’s vulva. The little girl is blushing crimson still, panting into her older brother’s neck as his strong arms keep her steady and securely in his embrace: “Ah. Ah. Big brother is so big… I love you, Karnok. Please, give our baby girls your milk…”

Karnok needs no further encouragement, his teeth gritting and his eyes closed in pleasure as he takes a firm hold of Kelli’s pregnant stomach and starts grinding her down onto his cock. The pointy tip starts breaking down the resistance of Kelli’s womb, the tight mouth slowly conceding to the intruder as the heat of the liquid inside slowly starts enveloping Karnok’s cock head: “Ah! H-hurry, big bro. Faster. Hurry!”

The seventeen-year-old’s veiny red knot bumps loudly into the tiny black canine pussy of his little sister with loud wet smacks, the young boy’s balls bouncing up and down in a sensually erotic dance as their dad is quickly building toward an explosive orgasm watching his children fuck. The very tip and top inch of Karnok’s shaft is inside the warm tight womb, the teenager throwing back his head against the couch as he can feel the heavenly sensation of his cock making contact with the soft skin of his unborn daughters. So delicate and small, their little limbs squirming and their tiny paws clawing uncontrollably against the sensitive surface of their teenage daddy’s penis.

Karnok gyrates his hips as he grinds rather than fucks into his sister now, slowly rotating the canine tip inside Kelli’s womb as the pointy red tip squirts powerful jets of precum uncontrollably. All over his unborn baby daughters. Massaging the fatherly liquid tenderly into their skin and fur with his tip. Exploring them. Loving them tenderly. And finally seating itself between the open legs of one of the tiny unborn girls.

The seventeen-year-old gasps and jolts upright, his eyes immediately making contact with his dad’s. The older male is jerking off like mad, his impressive fatherly veiny canine penis slipping up and down inside the lucario’s fist as he too keeps intense eye contact with his son.

“Can you feel them, son? Can you feel your daughters?”

Karnok gulps, feeling his body pass the point of no return as his impending climax announces itself at the realisation.

- “Yeah, dad. I can feel them. I can feel… the smallest of little pussies. Right at my tip!”

Dad moans out in a lewd whiny moan, his cock pulsing as it swells up even further in his fist when hearing this. The knowledge of his son performing such a depraved yet strangely beautifully natural act for a father and his unborn children pushing the older adult lucario over the edge.

“Squirt for them, son! Squirt your fatherly seed all over them! Make sure they know you love them! Together with me on three!”

Karnok gasps, completely entranced by the sensations against his cock tip as he grinds his knot into Kelli’s pussy with increasing force. Making the little girl squeal and cry out in painful pleasure as her tiny pussy is stretched wide around her big brother’s large sexy knot. The teenage boy’s bulb of flesh finally pops inside as the nine-year-old’s black glistening cookie relents, admitting the thick invader which causes Karnok’s pointy doggy tip to press firmly against his unborn daughter’s swollen slit: “Y-yes, dad! Cum with me! On three!”

Both father and son stare at each other intently, their cocks swelling with their impending orgasm just moments away. With Kelli’s moans accentuating each count as her pussy tightens around the base behind Karnok’s knot in her own immature climax.

“One!”

A first dribble emerges from dad’s cock, a prelude to the powerful jets about to be ejected from his veiny hard penis.

“Two!”

Karnok’s cock head presses firmly into the impossibly tiny cleft of his unborn daughter, the little girl twitching alongside her sisters as if they instinctually know what is coming. Kelli’s body stiffens in her brother’s powerful arms, kept in place as she spasms and gasps in her own childish orgasm.

“Three!”

An explosion of intense male incestuous lust erupts in the living room.

Dad nearly closes his eyes fully, yet is determined to keep watching his son seed his own sister’s already occupied womb with another volley of virile brotherly sperm. He jumps up from his recliner and lowers himself through his knees, bucking his hips as his masculine sweaty lucario body is wracked with overwhelming pleasure. With each thrust of his hips, his heavy manly nuts sway back and forth, and a powerful jet of fatherly semen arcs through the air as it splatters right on top of Kelli’s sensitive pussy, the little girl howling out in overbearing pleasure at the hot sensation of her daddy’s sperm exploding on her swollen pussy lips. The virile male clenches one fist around his own knot, simulating a tie, as his other pumps shallowly at the top half of his reddish veiny canine cock, causing more powerful jets of incestuous fatherly seed to rain down in between the legs of both of his children tied together in taboo union.

Seeing and feeling his father erupt so powerfully all over his sister’s pussy and his own groin and balls, even from a distance of nearly ten feet away, Karnok unleashes a torrent of hot brotherly and fatherly seed inside Kelli’s already occupied womb. Her tummy swells and her fortune cookie winks erratically as both brother and sister experience an earth-shattering orgasm together. Seventeen and nine years old respectively, with a litter of their unborn pups sharing in the experience inside of Kelli’s thirsty womb.

Spurts of lucario seed splashes all over the unborn little riolu inside the spasming baby chamber, mixing in with the womb water and glazing the excited tiny baby girls in a coating of their teenage daddy’s love. Whether by chance or not, Karnok’s heftily squirting doggy tip is pressed up into his unborn daughter’s tiny slit, injecting a healthy dose of fatherly love up inside her undeveloped cunny and giving her a taste of what is to come. Karnok in his crazed lustful haze vowing to himself to keep his cock snuggly seated with his unborn girls inside his little sister from this moment on, all the way up until during birth. Wanting them to be born in a thick layer of his seed, with the flavour of their daddy on all sets of their lips.

Kelli’s pregnant stomach visibly bulges with the movement of the unborn babies actively squirming around their father cock inside, expanding slightly as the baby chamber is getting filled tighter with brotherly seed supplementing the already present womb water. The nine-year-old riolu girl’s pussy is winking fiercely around the base of her older brother’s knot, Kelli’s eyes staring off into the void and her tongue hanging out as she cutely pants with the after bliss of being so full of her brother’s children, cock, and love.

Their dad approaches slowly, not caring he’s stepping into the combined juices of arousal from himself and his children on the floor. His feral doggy cock bobs out in front of him, continuing to lightly spritz jets of fatherly semen down onto his children’s laps as he keeps tied with his fist at the base of his penis.

“Son. Princess. Do you think… Would it be okay if grampa would visit his granddaughters too? Tuck them in, nice and tight? Just like I wish I could have done with you two?”

Dad’s cock throbs at his own lewd suggestion, spritzing Kelli’s pussy and Karnok’s balls again. The little girl is out of it, just smiling up at the ceiling and lolling out her tongue as her pussy rhythmically squeezes her big brother’s cock sheathed snuggly inside her womb.

Karnok’s bashful nature suddenly flares up, his cheeks reddening as he becomes aware of his father’s predatory gaze upon his crotch firmly connected to his sister’s winking cookie. He should be opposed to another male wanting to connect with his mate, even less so nurse his unborn children inside with another male’s seed. But somehow, it only feels natural and right to him that his dad, grandfather to his unborn pups, would get to meet and love his grandkids too.

Blushing heavily, the seventeen-year-old gently spreads his nine-year-old’s sister’s pussy lips to offer his father a better view of their tie. Showing the size of his bulbous knot sunk snuggly inside the little girl’s spread open slit as it pulses powerfully with the boy’s ongoing ejaculation. It’s not coming out for a while.

“I-I think I’m gonna nurse them a little longer, dad. But… I think they’d love to meet you afterward. I don’t think they’re sleepy yet.”

Their lucario dad smiles, now standing in between his equally lucario son’s open legs as he crouches down through his knees and gently rests his still spritzing cock on top of his nine-year-old riolu daughter’s pregnant stomach, feeling the movement through her skin. Just gently rubbing his tip and shaft all over the beautiful mount and his preteen daughter’s swollen nipples.

“That’s just fine with me, son. Grampa is gonna get himself ready. I love you two so much.”

- “We love you too, dad.”