Twilight Sparkle tentatively knocked on the door to the private quarters of Princess Cadance and her brother, Shining Armor. Twilight’s new wings twitched nervously, and she grit her teeth, grimacing at the odd sensation of her new feathers brushing against eachother.

The door clicked and swung open, revealing Shining Armor standing there, blinking down at his sister. “Hey Twily!” Shining Armor said with his predictable enthusiasm, lifting a hoof to ruffle her mane. “I never noticed that you got taller! How is my favorite princess?”

Twilight smiled nervously, shifting anxiously in place, her ears splaying back. “H-hi Shining. Is Cadance there?”

Shining Armor shook his head sadly. “‘Fraid not, Twily, she’s in court at the moment. Talking to the Equestria Games manager.”

Twilight winced, hanging her head.

“Can I help you with anything?” Shining Armor asked, his expression turning to one of concern.

Twilight made a soft, annoyed sound in the back of her throat, her wings mantling slightly. “I... I need to talk to somepony. About my wings. There’s nothing in any of my books about the issue, and Fluttershy and Rainbow Dash both said they haven’t experienced it!”

Shining Armor frowned at that, his brow furrowing. “Come in, Twily. You can talk to me.” He stepped aside, waving a hoof towards the room.

Twilight stepped inside uncertainly, her wings twitching again, making her entire form shudder.

Shining Armor closed the door, before stepping over to the bed, pulling himself up onto it, curling up to allow his sister onto the bed as well.

Cautiously, Twilight pulled herself onto the bed as well, biting her bottom lip as she carefully spread her wings out to lay them flat against the bed.

“So, what’s the matter with your wings?” Shining Armor asked, leaning in to peer at them, gently reaching a hoof forwards to stroke across the leading edge of one of them.

Twilight yelped at the contact, snatching her wings back and shuddering, squiming in place. “Don’t touch them!”

“What’s wrong?” Shining Armor queried, raising a brow confused.

“They’re sensitive,” Twilight admitted, flushing deeply. “They were fine for a little while after I got them... but now, every time I touch them...” Twilight trailed off, biting her bottom lip and pinning her ears back. “I can’t fly with them, because the wind through my feathers... ermh... excites them.”

Shining Armor stared at his sister with narrowed eyes, blue tail giving a slow flick back and forth. “Excites them?” he asked curiously, his tone turning delicate. “Do they... hurt?”

Twilight shook her head slowly her eyes wide and placating. “T-they turn me on,” she admitted in a breathy whisper. “I had to kick Spike out of the library while I was searching through the books because I kept brushing my feathers up against the bookcase and... well...” Twilight lowered her voice, “I had one hoof on my books and the other stuffed between my legs.”

“Puberty?” Shining Armor suggested with a goofy grin.

Twilight gave a sound of frustration, flailing a hoof at her brother. Shining Armor grinned, leaning out of the way deftly.

Twilight’s expression turned hopeful, “Did... did Cadance ever go through anything like this?”

Shining Armor gave a thoughtful sound at that, before shaking his head. “No, not that I know of. She does enjoy having her wings rubbed though...” the unicorn paused then, grinning and leaning closer to whisper into his sister’s ear, “Especially when I’m screwing her from behind.” To reinforce his words, Shining Armor gently dragged a hoof down the leading edge of Twilight’s left wing.

Twilight yelped again, clenching her teeth as her entire form tensed, warmth blossoming on her cheeks and neck. “Even though I’m a princess now, you still want to screw me?”

Shining Armor smiled helplessly at that, ruffling her mane with a hoof. “C’mon Twilight. You want me as much as I want you. And I have a idea for helping with your wings.”

Twilight flushed a little bit further at the accusation, and she bit her bottom lip, looking away. “W-well... I did come in here... alone...”

Shining Armor grinned at that, gently trailing his hoof through her mane. “Ever heard of exposure therapy?”

Blinking once, Twilight shook her head.

Shining smiled and shifted closer to her. “Well, you got these new wings. And you’ve never really done anything with them... It’d be natural for them to be sensitive.”

“Understanding why doesn’t help treat them,” Twilight said with a soft huff.

Shining Armor grinned at that, leaning in to kiss her cheek and chin affectionately, a hoof lifting to delicately trail down the upper edge of her wing, making his sister shudder. “Basically, we’ll stimulate your wings repeatedly. Over and over again. Until they’re desensitized.”

Twilight flushed faintly, her ears splaying back. “B-but that’ll mean...”

Shining Armor gently placed a hoof on her lips, quieting her, “Twily. Let your big bro take care of this problem for you.”

Flushing further, Twilight stared up at her brother, and then nodded slowly.

Shining Armor grinned, growing visibly excited at her acquiescence, his eyes narrowing as he licked his lips. His hooves came up, and he shifted around to lay against her side, beginning to stroke his forehooves firmly along her wings.

Twilight stiffened, arching helplessly into the bed, her tail giving a slow flick as her wings sprang out and quivered stiffly in place. One of her hooves automatically slid down her stomach, worming between herself and the bed until it was pressed firmly between her hindlegs, the other hoof pressing to her muzzle to stifle her noises. She began to grind her hoof against herself, wimpering softly. “Y-you had better be prepared to fuck me into the floor,” Twilight whispered back to her brother.

Shining Armor stared, watching as Twilight’s tail twitched, moving far enough to the side to reveal her hoof and her moistened treasure. The soft, purple fur of her coat puffed out slightly with the pliable outer lips of her sex, framing the perfect shade of pink hidden within. Each time Twilight’s hoof ground up against herself, her outer lips shifted, revealing a little of her inner flesh to her brother.

Shining Armor swallowed hard, staring, entranced, before he lifted his gaze suddenly and blinked, nodding earnestly. “O-oh yes, I will,” he said belatedly, realising that he had stopped stroking her wings. Immediately, he resumed his motions.

Twilight peered at him over her shoulder, smiling devilishly, watching the way his gaze lingered under her tail. “I really turn you on, don’t I?” Twilight asked coquettishly, batting her eyelashes, her wings flexing eagerly.

Shining Armor nodded dumbly, staring under his sister’s tail, his eyes wide and tail flicking eagerly. The tip of his swelling cock was beginning to make itself known, poking out from under his stomach.

Twilight whimpered faintly, grinding her hoof against herself all the more eagerly, her ears pinning back and eyes clenching closed. She bit her bottom lip, rocking her hips into the motions of her hoof impotently, shuddering. Her eyes snapped open, and focused on her brother’s throbbing member, and she licked her lips eagerly, her eyes narrowing and pupils dilating with lust.

“Shining, I need you to stop rubbing my wings,” Twilight murmured, her tone soft, but commanding.

Automatically, Shining Armor stopped and drew back slightly, a hoof trailing down to his visibly throbbing member, stroking it slowly. “What do you need, Twily?”

Twilight’s eyes narrowed, and she giggled, rolling onto her hooves, and then stepping off the bed, crouching down, lifting her rump into the air. It would have been an inviting pose, had she been facing away from him. Twilight stared up at her brother hungrily, licking her lips. “I want you to rub my wings, brother. I want you to grind against my wings while you fuck my mouth.”

Shining Armor stared down at his little sister as she opened her mouth teasingly, poking out her tongue, her wings mantling slightly, shifting and rustling. his breathing intensified, and he shuddered, before rolling over onto his hooves and pouncing on her. His forehooves automatically found her wings, beginning to rub along them, touching at the joints, kneading and stroking. His throbbing, eager cock bobbed in front of Twilight’s nose, eager for attention.

Twilight gave a low moan at the touches to her wings her hindlegs trembling. Her eyes fixed on the bobbing cock of her older brother, and with a lusty, eager growl, she leaned forwards and dragged a firm lick against the tip, before drawing back, watching with a warm smile at the way the thick member bobbed.

Shining Armor gasped at the lick, his ears pinning back and hips rolling slightly. A thick spurt of precum drooled from the tip of the thick head, and immediately, Twilight was there, suckling and lapping directly at the slit where the musky fluid had emanated. Shining Armor groaned, tensing up and trying his best not to thrust, burying his nose against one of her wings. After several seconds, he humped his hips on reflex, and then bit at her wingjoint lustfully.

A soft whimper left the alicorn, and she shuddered, arching harder at the sensation of her brother teasing her new wings like that. Her tongue swirled and lapped at the very end of his cock, digging into the cumslit, eager for more of that musky precum, the hot scent of her brother’s arousal intoxicating in its intensity. The thrust against her muzzle caught her by surprise, and she got a facefull of her brother’s cock, the length of it grinding across the bridge of her nose. The bite to her wing made her stiffen and whimper, tensing up, her arousal starting to drip from the slick, clenching alicorn cunt.

Twilight drew back, panting and nudging the tip of her brother’s member, her eyes wide and wild. “I want you to fuck my muzzle, brother,” Twilight whispered hoarsley, a hoof lifting to cup the base of his member, holding it steady as she stroked her tongue around the head. “I want you to cum in my mouth. I want to taste your spunk, Shining.”

Shining Armor’s eyes widened at Twilight’s tone and her words. It was the kind of language he had come to expect from Cadance, but certainly not from his sweet, innocent sister! It was... hot.

Twilight growled heatedly as she finished speaking, slipping her hoof down to cup his balls, before she shoved her muzzle over his member without warning, beginning to bob and suckle in earnest.

Shining Armor whimpered and shuddered, biting down on her wingjoint a little harder, his hips giving another reflexive thrust at the sudden suckling and warmth around his eager cock. Twilight took the thrust eagerly, bobbing down against it, grinding her tongue along the underside of his member firmly. Panting helplessly, he lifted his muzzle from her wing and squeezed at the base of them firmly with his forehooves, listening to the way his sister whimpered and shuddered. The hot scent of her arousal met his nose, and he shuddered, shifting a hoof down to her cheek.

A heated growl left the alicorn as she felt his hoof on her cheek, automatically knowing what it meant. She tugged back off his aching length with a pop! of suction, a line of precum drooling down her chin. “Y-yes, brother! Fuck my muzzle! Fill my mouth with your gooe-Mrf!”

Twilight’s heated cajoling was cut off as Shining Armor found her mouth with his cocktip, wasting no time in shoving himself back into her eager muzzle. Without hesitation, she started to suckle around him again, bobbing and tilting her head to increase the suction and friction, tongue grinding and working against his tip.

Shining Armor was just as eager to fill his sister’s muzzle with his spunk, as she was vocal about getting it. The new, more aggressive style was turning him on so much that he was sure he’d make a mess of her mouth very soon. Wasting no time at all, Shining Armor began to thrust eagerly into his sister’s mouth, sliding back and then humping forwards until his tip bumped the back of her throat.

Twilight groaned muffledly around her mouthful, her wings mantling and quivering against her sides as she lifted both forehooves to grip around her brother’s rump. One hoof found his heavy nuts, squeezing them delicately, urging him to fuck her muzzle harder, while her other hoof wrapped around his rump and pulled.

Shining Armor couldn’t help but thrust harder into his sister’s mouth as she pulled at him. With a push of her head and a straightening of her body, Twilight pulled him even harder, and Shining Armor gave a cry of surprise and ultimate delight as he felt the tight grip of his sister’s throat opening to allow the tip of his cock inside. Twilight gagged for a few moments, before smiling hard and beginning to swallow.

Shining Armor’s eyes widened, and he stood on the tips of his hooves, thrusting back and forth an inch of so as he felt his sister suckling and swallowing around his cock, his ears pinning back as he bit his lip so hard he could taste blood. “T-Twily!... f-fuck!” Shining Armor panted past his quivering lips, feeling his entire form tensing up.

Twilight gave a low groan around her mouthful, squeezing his rump, balls, and swallowing hard around his cock, a muffled sound of encouragement reaching her brother’s ears.

Shining Armor whimpered as he stared down at his sister, before finally giving in. With a heated snarl, the stallion gripped his sisters chest in his forehooves, and then drew back, stiff cock throbbing on Twilight’s tongue, before he shoved forwards, sinking deep, deep inside her throat. Twilight smiled hard around him again, purring in delight at his sudden initiative.

With a whimper of delight, Shining Armor began to thrust into his sister’s mouth in earnest, sliding back and shoving forwards, rutting her muzzle like he would fuck her cunt. His hips met her muzzle, and he held himself there, cock stiff and throbbing, buried in her throat entirely. “T-Twily. I-I’m gonna c-cum!”

Twilight gave a muffled sound of anger around his cock, glaring up at him with an expression that said more eloquently than words ever could, exactly how much she wanted him to spill into her mouth.

Shining Armor leaned over his little sister again, starting to hump his hips powerfully, sliding back and forth inside her throat. He managed barely a dozen thrusts before he tensed up, sliding back and grinding his tip against her tongue urgently.

Twilight whimpered in delight, suckling at his tip, before she popped off of his member and panted hard, grinning up at him. “Cum, Shining! Cum for me!” she commanded, stroking him off rapidly with a forehoof, her gaze wild and excited. “Spill all that thick spunk in my mou-”

Once more, Shining Armor cut off his sisters begging with a harsh thrust of his cock, shoving himself into her muzzle, holding her in place with his hooves on her cheeks and thrusting violently back and forth. His flared tip ground against her tongue repeatedly, before he tensed and cried out, exploding suddenly into her mouth.

Twilight’s eyes went wide as her brother paused in his lustful humping, his throbbing tip buried against the back of her throat. The cock throbbed harder, jumping against her muzzle, and a burst of heated spunk filled her mouth instantly. Twilight whimpered in delight, her furled wings suddenly tensing and straightening, quivering in place as she tasted her brother’s spunk spilling across her tongue, her eyes wide and staring into space. Repeated bursts of gooey mess splashed across her tongue and the back of her throat, dribbling rapidly from around the embedded cock, drooling down her chin, spilling from her mouth in rapid bursts to spill onto the floor.

Gasping, Twilight tugged back, panting for breath, the last of Shining’s spurts spilling across her face, marking her cheeks and muzzle with his mess.

Shining Armor came back down to earth slowly, staring down at his little sister with wide eyes. Twilight was panting as well, whimpering and shifting slightly in place, rubbing a hoof between her legs. Her face was marked with her brother’s spunk, and her open mouth showed a slick pool of gooey cum on it. Twilight shuddered and swallowed, before panting again, her tongue poking out, now clean.

“You’re a mess,” Shining Armor panted, staring down at her with a low groan.

Twilight looked up at him with narrowing eyes, her wings fluttering faintly as she ground her hooves firmly against her drooling cunt. “It’s just liquid pride. Now I want you to fuck me.”

Shining Armor stared for a few more moments, licking his lips as he tried to catch his breath, motioning towards the bed.

Immediately, Twilight stalked over to the bed, and pulled herself up onto it, lifting her rump into the air, tail twitching to the side in invitation.

Shining Armor gave a growl of delight, stalking up behind her and pushing her rump up a little higher with his hoof, before pushing his muzzle against the exposed, dripping sex and burying his tongue in it.

Twilight whimpered, her legs quivering and wings flaring again, fluttering faintly. Her forehooves gripping at the bed as her hindlegs trembled, and she moaned softly back at her brother. “Yessss...”

Shining Armor growled lustfully, tonguing against her a little harder, a hoof lifting to squeeze her rump, spreading her open for him. His tongue ground up against the now-exposed inner flesh, making his sister whimper and bite down on her hoof in delight.

With a quick twist of his hooves, Shining Armor pushed his sister over onto her back, grinning up at her over her stomach. Twilight shuddered and squirmed in place, her wings flexing and then splaying out flat to help her balance as she stared down at him, eyes narrowed with lust. “I need you to fuck me, Shining.”

“Don’t want any more of my magic tongue, little sis?” Shining Armor asked innocently, dragging another heated lick across her drooling cunt.

Twilight arched and gasped, biting at a hoof again to stifle her noises. “Shining, if you don’t crawl up and fuck me right now, I swear to the goddess, I’m goi-eep!”

Shining Armor once more cut his sister off by dragging a firm lick across her exposed cunny, laving his tongue heatedly in a slow swirl right up over her clit, before clasping it with his lips and suckling firmly.

“You’re so much more aggressive as a princess,” Shining Armor said with a sly grin up at her.

“Fuck me already!” Twilight demanded, reaching down with both forehooves and gripping his mane, dragging him up her form, before she clasped him with both sets of hooves, grinding herself against him in earnest.

Shining Armor grinned at his sister’s aggression, leaning down to kiss her chin and throat lustfully, shifting his hips to grind his eager cock against her stomach.

Growling, Twilight wrapped her hooves around his neck and then leaned in, whispering pure filth into one of his ears. “Shiny... I want you to fuck me. I want you to rut me into the bed until I’m a quivering pile of unicorn flesh drooling your spunk from my well-fucked cunt. I need it!” Twilight punctuated her demand with a heated grind of her drooling cunt along the underside of his stiffened rod. “Shiny... please fuck me!”

Shining Armor stared down at his lust-addled sister, his eyes wide and his heart pounding. He ground his hips against her slowly, deliberately working the base of his stiff member against the slick outer lips of her sex, his tip throbbing against her chest. His forehooves reached forwards to press down on her wings, rubbing and massaging them heatedly.

Twilight groaned aloud, her entire form spasming as she shuddered and bit her bottom lip, trapped under her big brother as he ground against her teasingly. Her forehooves lifted, capturing his cock, holding it against her chest as she curled and found his tip with her lips again, fastening over the end of it and nursing at it almost urgently.

Shining Armor whimpered in delight, staring down at his sister as she suckled on the very end of his member and ground her slick cunt against his underside at the same time, her wings splayed wide.

With a low groan, Shining Armor pulled back from her muzzle once more, sliding himself free of her lips reluctantly. “You can have some more after I fuck you into the bed,” he promised, grinning down at her.

Twilight gave a coy smile at that, her eyes narrowing as she splayed her hindlegs further. “Fuck me, big bro. Fuck me hard and spill all of that gooey cum deep inside me.”

Shining Armor shuddered at his sister’s words, his ears pinning back and eyes narrowing down at her. He slid back, letting the thick cocktip slide across her stomach, the flared tip dragging through her fur until it fell neatly into place against her. Gently, he began to push forwards, grinding the flared cocktip against her drenched entrance.

Twilight started getting impatient immediately, grinding her hips up against him. “Shiny... fuck me, please!” she pleaded, squeezing her hooves around him and pushing her hips towards his throbbing cock. “Don’t be gentle, just fuck me! Rut me into the bed!”

“You are so fucking filthy,” Shining Armor growled down at his sister with a lustful smile, grinding against her a little harder.

“Fuck me!” Twilight demanded, shoving herself towards him.

With a mighty thrust, Shining Armor managed to sink his tip inside her, both of them gasping as the flared flesh forced her open around it. Wasting no time, Shining Armor bounced forwards and thrust even harder, making Twilight arch and cry out in delight as he suddenly forced two thirds of his stiff cock deep inside her.

“Yes!” Twilight cried ecstatically, so loudly that Shining Armor was glad the room was soundproofed. “Yes! Yes! Fuck me! Rut me, big brother!”

Shining Armor growled heatedly, gripping around her middle with his hooves, deliberately rubbing against her wings as he buried his nose against her throat, lipping and biting heatedly at the tender flesh there. He drew back and thrust hard, starting to fuck his little sister with a firm, urgent motion.

Twilight’s wings splayed and fluttered against the bedsheets as her brother fucked her hard. Her tight cunny clenching rhythmically around him, squeezing and milking at his thrusting cock, the soft sound of her immense moistness echoing throughout the room, mingled with the siblings pleasure-moans and the soft impact of firm thrusting.

Shining Armor panted hard as he stared down at his little sister, whimpering in delight, his forehooves pressed hard against her wings, forcing them into the bed.

“Don’t hold back!” Twilight gasped out, squeezing him hard with her hooves and grinding her hips towards his motions. “F-fuck me! Fill me!”

A low groan left Shining Armor as he gripped Twilight harder, hooves digging into her sides as he began to thrust into her with a frenzied, urgent motion.

Twilight whimpered and pushed back at him, biting her bottom lip again, panting breathlessly. Her soft, moist depths squeezed around him, clenching around his flared cocktip and making it hard for him to withdraw, before squeezing and suckling in earnest to welcome him back inside with each inwards thrust.

“T-twily... h-hahh...” Shining Armor tried to warn, his ears pinned back and teeth baring, his hips shoving against her own in a rough motion, hooves tugging her against him over and over again.

“Y-yes! Yes!” Twilight cajoled, squeezing him with her her forehooves and grinding her rump into his crotch urgently. “Fill me! Fuck me! F-fuck me and spill it all inside!”

Shining Armor clenched his teeth, and then gripped Twilight, holding her firmly in place and then thrusting wildly. Twilight’s form no longer rocked back and forth, held firmly in place by her brother’s powerful muscles, forcing the princess to take each thrust until every single millimetre of her brother’s aching cock was buried deep inside her clenching cunt.

Twilight was the first to succumb to the pleasure, crying out and spasming, her wings twitching feebly and her head throwing back as she screamed her delight to the ceiling. Her already-tight depths became impossibly so, squeezing and clenching around him wildly, milking him for his essence.

Shining Armor only last a few more thrusts, baring his teeth as he rutted his sister, sinking deep inside. He didn’t even break his rhythm, thrusting jerkily as hot bursts suddenly spilled from him. A gooey cascade of pony spunk burst deep inside Twilight’s squeezing cunny, splashing across her inner walls, coating her soft depths in her brother’s sticky essence over and over again.

With a low groan, Shining Armor continued to thrust, each firm thrust causing a wave of gooey white liquids to splash from around their joined bodies, making a mess of their hips and tails. Shining Armor misjudged his next thrust, and his throbbing rod skipped out of Twilight’s clenching body, ending up sandwiched between them, a burst of cum splashing right into Twilight’s face.

Twilight jerked back in surprise, her eyes widening in surprise before closing on reflex, the alicorn blindly lunging forwards with her muzzle and capturing his still-spurting cock with her lips, quickly fastening on the very tip and nursing on it urgently.

Shining Armor whimpered in delight, slowly rolling his hips as his gooey spurts spilled across his sisters tongue, feeling her swallow each pealy pulse of gooey ejaculate as it came out. After the first two swallows, she stared up at him, grinning devilishly against his spurting cock as she swallowed down his essence, draining him. Shining Armor couldn’t help but give another low groan, his spurts coming to a stop.

After several long moments, Shining Armor rolled to the side and splayed out hard, panting heavily and trying to get his wind back.

Twilight swallowed once more, peering down between her legs and watching a sluggish dribble of her brother’s spunk drooling from her freshly-fucked cunt, and she grinned, reaching a hoof down to rub through the mess before drawing it up to her lips, trailing her tongue across her hoof innocently. She looked to the side at her almost-comatose brother, raising a brow. “C’mon now, Shining. I’m a big girl now, I know what I want. And what I want is not you sleeping.”

Shining Armor gave a low groan, climbing to his hooves slowly and leaning against his little sister, stroking a hoof down over her wing.

Now he had two princesses to please!

Several hours later, a much more sedate Twilight Sparkle emerged from Shining Armor’s and Princess Cadance’s chambers, brushing out her mane with a hoof.

“Thank you for the therapy, big brother. I really needed that. It was bugging me so much,” Twilight Sparkle said with a faint smile.

Shining Armor smiled warmly. “Any time, Twily. I was glad to help.”

Twilight Sparkle smiled, and then leaned forwards, pecking him on the cheek, before leaning in further to whisper into his ear, “And don’t think I won’t be back again for another dose of your ‘liquid pride’.”

Author's Note

Counseling not included.