Noire's curious sister

"Wow, it’s so gross!"

"D-Don't look at meeeeee!"

Noire desperately tried to conceal the cursed 'thing' sprouting from her crotch as her sister Morgan burst into the changing tent with stars in her eyes.

"Why not? It’s not every day you see a girl with a penis! And to think my own sister gets to experience such a strange phenomenon... What does it feel like!?"

Morgan pushed her face right up into Noire's as the timid girl retreated to the edge of the tent. Her gaze was one of intense curiosity as the edges of her mouth curled in excitement.

"N-No! G-G-Get out Morgan!"

"Nooo way! I'm not letting this opportunity pass me by, especially since I know what you do with Mom when dad isn't around."

Noire's expression froze in horror as Morgan revealed her knowledge of the secret rituals Noire performed late at night with their Mother Tharja.

"Y-You know about that!?"

"Duh. I even asked Mom to let me join in... But she says I don't have to 'talent' for it."

The colour drained from Noire's face as she recalled the depths of hell she had visited with their Mother thanks to the hex upon her crotch.

Staring down at the bulbous mass of flesh jutting out from between her thighs, Noire couldn't help but unintentionally twitch with her Sister so close. The vile girl-dick jumped up as she clenched her hips, poking into Morgan's robe as they continued standing face to face and forcing Noire to sigh in defeat as her body began to grow aroused, just as Tharja had trained her night after night.

"Aah..."

Nodding to herself as she stood before Noire, Morgan crossed her arms and stared down at the slowly growing penis between them.

"Ooh, it’s getting bigger... It took you one minute this time, but with Mom it takes thirty-seven seconds, how interesting."

Snapping to attention as Morgan spoke with certainty, Noire began to feel afraid of her sister’s inquisitive gaze. Fear filled her as she imagined just how far Morgan would go.

"What does it feel like Noire?"

"I-I can't..!"

Still trying to escape, Noire covered up her face and tried to pretend she was somewhere else.

"Noireee! Don't ignore me..!"

"Hnnn!"

Despite her dick's growing hardness, Noire remained resolute, imagining she was at home in bed instead of naked in a tent with a massive hard-on in front of her sister.

Noire became hopeful as silence fell over the tent, thinking that Morgan must have given up and went back, which left her wholly unprepared for the warm and wet sensation that suddenly wrapped around her monstrous futa-dick.

Opening her fingers to peek through the gaps, Noire looked on in Horror as she saw Morgan kneeling down with her mouth wrapped around the foul flesh-rod.

"M-M-Morgan!? W-What are you dooooing!!"

Unable to retreat any further without risking pulling the tent down around them and revealing her shame to the entire camp, Noire was trapped against the wall as her sister began to earnestly suck her off.

"Aah..!"

Her dick was quickly covered in saliva as Morgan bobbed her head up and down the length, stroking it with her tongue and staring up at Noire the entire time.

"S-Stop..!"

Noire feebly tried to object as she grabbed the tent wall with her hands, forming a fist around the thick fabric as she endured the building pleasure inside her hexed girl-cock.

She placed her hands against Morgan's head and tried to push her away only to be betrayed by her body as another of Tharja's hexes activated, forcing her pleasure to be amplified to an unbearable degree.

"Aahhhh..!"

Noire screamed in ecstasy, loud enough to echo throughout the camp as she lost control of her arousal. An intense orgasm took hold of her and caused her dick to spasm inside Morgan's hot and wet mouth.

Drool fell from Noire's own mouth as her face screwed up in excitement. Her mind began to fog with lust as yet another hex, courtesy of their mother, took hold and forced the poor archer girl to enter heat as though she were an animal.

"Aah... Aahhh!!"

Noire shook her head wildly as the heat overtook her, before she locked her gaze onto her cocksucking sister.

Now that the hex had taken over, Noire was little more than a spectator inside her own body. Forced to watch as she pushed Morgan down and leapt towards her, straddling the tactician girl's waist.

"Ooh... I've never seen this part before!"

Far from afraid, Noire watched through vacant eyes as Morgan's expression remained carefree and full of curiosity. There was no sense of danger in her eyes as the throbbing girl-cock rested across her chest with its tip almost reaching her chin.

Morgan's eyes widened as she stared at the pulsing tip, watching as it expanded and contracted as though it were breathing. She inhaled the vile scent deeply with a satisfied look on her face before she gently began to lick the tip with her tongue.

"Haah..."

Unable to control her own body Noire could only watch as Morgan began to trace her tongue around the edge of her dick, before pushing it under the skin hood and lapping up the crusty dick-cheese that hid beneath.

Fear filled Noire as her sister ate the vile filth, recalling that Tharja had warned her not to wash it away lest she be punished for ruining valuable reagents.

Noire's body soared with pleasure as Morgan's tongue rolled around the incredibly sensitive inner layer, as not even her Mother had gone as far as to pull back the hood normally covering her cock-head.

Quickly driven mad by simply having her cock sucked, the lust-mad body of Noire thrust a hand towards Morgan's crotch before fiercely grabbing the obviously wet patch around it.

Seeing this, Morgan wriggled her body as a wave of anticipation washed over her while Noire panted heavily atop her with breath hot and steamy enough to be visible in the cold tent air.

"I recognise this part though. I guess it’s too late to take them off before you-"

Not even letting her finish speaking, Noire tightened her grip around Morgan’s crotch before furiously pulling at the thin cloth covering, easily tearing it off.

Staring at Morgan's untouched pussy through the gap in her leggings, Noire seemed to hesitate despite her lack of control, perhaps some small resistance remaining unbroken by her Mothers hexes. Hope again began to fill her heart that she could endure this and somehow escape fucking her sister.

However her hopes were dashed quite spectacularly as Morgan, staring down at the hole in her leggings, pushed her over the edge with a few depraved words.

"...Guess it was. Hey sis, are you really gonna take my maidenhood?"

"Aah..."

"I don't really mind, in fact I want you to! I wanna get closer to Mom and maybe if we do this she'll stop pushing me away."

"Haah..."

"So Noire..."

Staring up at Noire, Morgan smiled sweetly as she kissed the dick-head gently.

"...Why don't you just go ahead and invade my castle?"

Noire continued staring blankly as the unstoppable desire to fuck her sister consumed her entire being, barely even aware as the tactician laughed at her own silly line.

"...Ahhaha, 'Invade my castle'... What the heck is that?"

Pulling her hips back, Noire aimed her massive girth at Morgan's far too small passage. The tiny part of her mind still able to think clearly, yelling at her begging to stop, was drowned out by the sound of laughing as Noire's chest suddenly started to heave.

"HAHAHA!"

"Ooh... Yeah... Yeah! C'mon sis. Invade my castle, penetrate my defences! Impregnate my walls... Wait that’s not right, uhm... impregnate my impregnable walls..? No that’s silly-"

"QUIET! CEASE YOUR INCESSINT YAMMERING YOU FOOLISH GIRL."

"Woah, sis are you okay?"

"YES. YOU HOWEVER WILL SOON BE REDUCED TO A SQUEELING PIG. REGRET THAT YOU EVER GAVE IN TO YOUR SICK CURIOSITY DEAR SISTER!"

Giving Morgan no time to question her further, Noire finally gives in to the perversion in her heart forced upon her by Tharja's hexes. Without wasting any more time, she rams the entirety of her pulsating futa-dick into Morgan's tight maidenhood, deflowering her in an instant.

"Ow..!"

Morgan yelped in pain as Noire parted her unsullied walls, forcing her pussy to gape as it was filled by the massive girth. She watched as Noire gripped her knees and used them to push deeper inside, before smashing into the mouth of her womb and grinding against it.

"CONGRATULATIONS ON BECOMING A WOMAN, SISTER!"

"T-Thanks..."

Morgan's cheerful smile was replaced by a hazy expression as she stared forward with unfocused eyes. Her senses were overwhelmed by the throbbing mass of flesh inside her as her pussy writhed around it.

She felt as though she had been impaled as she was unable to move away from it, reduced to a living sheath for her Sister's sword of flesh.

Gritting her teeth as Noire filled her completely, Morgan felt every individual throbbing vein of the monstrous dick inside her as blood furiously pumped through them, massaging her incredibly sensitive walls even though Noire had yet to move another inch.

She began to pant faster as excitement continued to grow, before she was forced to close her eyes as it started to overwhelm her.

"Aah... Aaaah..."

Morgan pushed her forehead into Noire's chest as she panted with her eyes closed. She felt like she was going to cum before Noire even started moving.

"WHAT HAPPENED SISTER? WHERE DID THE CONFIDANT TACTICIAN GO?"

"Aahh... Sis..."

Unable to move due to the sheer size of Noire's monstrous length, Morgan could do nothing but lay on the ground as Noire merely rested inside her, a wicked grin on her face.

"Sis... please..."

"PLEASE? THAT’S NOT THE SOUND A PIG MAKES!"

"Aah..."

Her mind frazzled by the unexpected pleasure, Morgan became desperate for release, cursing herself for underestimating her sister’s prowess and falling prey to her skill.

"Ahhn...nnk... Oiiink..!"

"WHAT A PERFECT LITTLE PIGGY..! DOES PIGGY WANT TO BE BRED BY HER SISTER?"

"Yesss...sssoink... Oinkkk..!

Sneering down at her sister so eagerly emulating a farm animal, Noire couldn't help but laugh again.

"AHHAHA! VERY WELL, GOOD LITTLE PIGGIES GET REWARDED. SQUEEL FOR ME PIGGY!"

"Aahhh..!"

Noire began to pull herself out of Morgan's already so loose pussy, rendered useless for any cock but hers after a single thrust. She licked her lips as she imagined the poor girl being ruined for men by her own sister.

She closed one eye in excitement as she bit her lip, forced to endure as Morgan's pussy clung to her despite being so loose, as if it were trying to prevent her from pulling out.

"Aah..."

Noire sighed contentedly as she pulled half of her length out, leaving far too much still inside as she rapped her fingers across Morgan's knees.

Blinking quickly, Noire finally realized what she was doing as her senses returned to her. Swallowing nervously as Morgan continued to moan while half-filled with cock, Noire briefly considered fleeing the depravity, but decided that it was far too late to turn back now. Her Mother had told her to try using 'it' on other girls after all.

"H-Here I go..."

"..nK... Aah... Sis, you're back to normal... aah..."

"U-Uhm... S-Sorry, Morgan."

"For what?

"F-For... raping you..."

"Aww heck... Just as long as you don't stop now..!"

Noire stared down in confusion, somehow having forgotten that everything started because of Morgan in the first place.

"C'mon... I can't take it anymore Sis..! Please..!"

"A-Alright..."

Noire recognised the look on Morgan's face as that of a bitch in heat, a look recognised from countless nights and gallons of cum spent inside their mothers frustratingly pleasurable pussy. With determination, she steeled her heart to the depravity she was about to witness upon her precious sister.

"Aah..!"

Morgan moaned loudly as Noire stabbed back inside her, filling her again before quickly thrusting with a fast stable rhythm.

Noire watched as Morgan's jacket fell loose, before the tactician girl quickly removed it revealing a tight shirt clinging to her breasts. She licked her lips as she saw hard pointed tips stab into the thin cloth covering up Morgan's chest.

Morgan wriggled her hips back and forth as Noire hilted her with every determined thrust. She felt as her pussy desperately sucked on the thick meat filling her up, drinking up the precum leaking from the tip as though it was water in a desert.

Noire tightened her grip around Morgan's knees as she began to thrust with more force, almost slamming into the tactician girl's needy pussy.

Her balls twitched as they slapped against Morgan's wet thighs, soaked with the lewd mix of precum and pussy-juice leaking out of Morgan's so recently deflowered passage. Sensing her release approaching, she sped up again.

"Aaah..."

"Ooh..!"

Noire moaned loudly as she buried herself inside Morgan, right before coating her inner depths with a thick load of hot girl-cum. She bit her lip as Morgan's pussy tightened around her, while the tactician girl was gripped by her own powerful orgasm.

Holding herself still, Noire felt as her thick cream spurted out inside her sister's tight passage, filling it to overflowing in an instant and forcing the rest to flow down Morgan's loose pussy.

Morgan wrapped her legs around Noire's asscheeks as she was overwhelmed by the sensation of being filled, unable to process the excitement she was feeling.

Noire's intense ejaculation continued to unload inside Morgan, seemingly without end as her balls seemed to become even more swollen.

"Aah..! I'm so full... sis..!"

"M-Morgan... I-I'm sorry but its feels so good inside y-you..!"

"Huh..? Isn't that good..? Why are you apologising..?"

"B-Because..!"

Without warning, Noire suddenly pulled out of Morgan's cum soaked canal, before desperately thrusting back inside.

"Because n-now, I can't s-stop!!"

"Aaah... Ooooh..!"

A loud, wet 'slap slap slap' sound filled the room as Noire began to force herself into Morgan's already full pussy, almost diving into it as though her life depended on it.

"M-Morgannn..!"

"Oooohhh..!"

Morgan lost control of her face muscles as she was overwhelmed by Noire's second assault. An expression as though she had been fucked silly consumed her face, spurring on Noire's own desperate excitement.

Noire pulled back her hips again and again before forcing them into Morgan, displacing the veritable ocean of cum inside her with every furious thrust.

Her hips began to feel sore where they slapped against Morgan, but choosing to ignore the pain, Noire felt as her balls became more swollen than ever.

Suddenly a memory flashed through Noire's mind, one almost forgotten as she had assumed it was a sick joke at the time.

-
"Noire... If you feel 'that', then you MUST pull out... I've no intention of becoming pregnant with my own daughter's child..."
"M-Mother? W-What are you talking about..?"
"Oh, you'll see..."
-

Fear gripped Noire as she continued thrusting into Morgan's far too pleasurable pussy. The memory reminded her that she could in fact get her sister pregnant thanks to their Mother's hex, however even as the sick thought ate away at her she found herself unwilling to pull out.

Instead, reminding herself that she had already cum inside once so it was too late anyway, Noire began to move even faster inside Morgan, possessed with the desire to impregnate the tactician girl.

"Aahh... Morgannn..! I-I'm sorry, but I'm going to cum inside again..!"

"Ooh... Sis, do it!

"I-I could get you pregnant..!"

"It’s oookay... Aahh..!"

"I don't even c-care that you're my s-sister!"

"F-Fill me againnn... Nnn..!"

"I'm... I-I'm cumming..!"

"Oooohhh!!"

Noire felt lightheaded as she exploded inside Morgan, feeling as she empties her balls completely inside her sister's womb, again.

"Aahh..!"

Morgan's screams of ecstasy as she's filled cause Noire to feel a sense of accomplishment. The look on her sister's face revealed the depths of her excitement, one that Noire had never witnessed on their Mother during similar 'exercises'.

Noire collapses into Morgan's chest as the tactician girl spasms, forced to writhe from the monstrous cock dominating her pussy and reshaping it for Noire's use alone. Crushing Morgan's ass beneath her powerful thrusts, Noire feels as Morgan's leglock restraining her flies away, forced to stretch out behind them in a desperate attempt to endure the mind-breaking pleasure. Morgan's toes curl as Noire falls into her pussy again and again, somehow still releasing a torrent of cum inside and forcing the ground to turn white as it spills out. The wet 'slap slap slap' sound continues as Morgan's ass ripples with every thrust, while her back arches as she pushes her stomach into Noire.

"Ooooh..!"

Morgan moans again as Noire suddenly starts thrusting faster than ever as her balls finally drain to their last few drops, before Noire finally, finally thrusts with furious desperation and explodes through the mouth of her womb, burying the monsterous cockhead directly into her deepest reaches.

Morgan spasm's once more as her most powerful orgasm yet overtakes her entire body, locking her joints in place around Noire's cock, unable to think of anything but the sensation of her sister's dick inside.

"Aaah...!"
"Oooahhh..!"

Morgan and Noire scream together as Noire's last spurt is released directly inside Morgan's womb, bypassing the front door completely and painting her inner depths white with potent girl-cum.

Finally spent, Noire begins to massage Morgan's womb with her cockhead in a depraved attempt to induce ovulation. Noire had become completely and utterly obsessed with the idea of making her sister pregnant.

"Aah... sis..."

"M-Morgan..."

Her gaze hazy and unfocused, Noire stared into Morgan's eyes. She felt deep love for her sister fill her as Morgan smiled up at her with a familiar carefree smile.

Rubbing her belly, Morgan closed her eyes while smiling warmly.

"I wonder if I'm pregnant..."

"I-I... hope so..."

---

"What... is this..?"

Tharja crossed her arms with an irritated look on her face as she stared down at her two daughters, both obviously pregnant.

"Well..."

"M-Mother... Uhm, this is..."

Noire and Morgan shared a glance before laughing loudly.

"Ahahha"

"Ha, Ahah..."

"Ugh... I had a feeling this would happen..."

Tharja rubbed her forehead in frustration as she was unable to hide the results of her experimentation any longer, thinking of some way to explain herself to Robin.