FSE

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All characters depicted in this work of fiction are of legal age of consent.

“Give me a boost. You're probably used to girls walking all over you anyway."

Charlie scoffed, feigning offence. Still, Madeline's step-brother leaned against the tree and laced his fingers to give her a step up. “You're lucky I'm a sucker for redheads."

Madeline smirked, then stepped up to get a hold of a low-hanging branch. With Charlie's help she managed to haul herself closer to the treehouse above them, but still made a point of stepping on his shoulder to get a little more height.

“You okay down there, big bro?" she asked, getting a pained grunt form the young man below.

“Oh, yeah. Good times!"

He was holding her in place for about ten seconds before he started feeling the strain in his arm muscles. “You could do with losing weight," he complained.

Madeline huffed. “You should've finished the ladder."

Thirty seconds came and went, but there didn't seem to be much progress up there. Charlie grunted impatiently, shifting his grip on her foot to take some of the strain from his trembling arms. Madeline must have noticed, because she snickered at the effort turning his face red.

Charlie was considering telling her to get a damn move on when he looked straight up her skirt.

His younger step-sister wore a pair of tight shorts under her skirt, but clearly nothing else underneath. The lycra was moulded to the supple contours of her ass, with the distinct line indicating the valley between those lovely cheeks. But at the front, right in Charlie's view he spotted the cloth sticking to the tell-tale shape of the smooth, ripe little labia. It took every ounce of willpower for him not to visualise the pretty little nubile pussy that lay just beyond the thin veil of lycra.

He looked away with a blush that did not escape Madeline's notices, and her smirk tugged a little harder at her lips. She'd neglected underwear that morning for a conscious reason, especially when their parents weren't home. Double so when Charlie invited her for a walk in the woods skirting their home.

Madeline had made up her mind about what she wanted to do with Charlie a long time ago. Working up the nerve, even when their parents were off galivanting on one of their frequent trips; that was another matter.

Hand over hand she caught the edge of the treehouse and managed to pull herself inside.

Madeline crawled on bare hands and knees before settling against one wall of the treehouse. She heard branches groan and flex below as Charlie hauled himself up next and she got a good look around. Every inch of the clubhouse was covered in paraphernalia Charlie and his friends had collected over the years. It was rather impressive; the collection ranging from little oddities they'd found in the forest, to things they'd brought from home to make their stay on weekends away from the critical eye of adults more comfortable. There were beanbags, cushions, blankets, even a cupboard containing sleeping bags.

Charlie hauled himself in to catch Madeline grinning at his effort. “Yeah, we should have finished that ladder a long time ago." He chuckled. “Something for you to work on while I'm at college, maybe?"

Madeline's expression dropped a little as she was reminded. Charlie had been her older brother only a couple of years since her mother re-married with Charlie's dad. Since then their parents had been travelling quite a lot. Sometimes for business, sometimes pleasure. And it always left Charlie to take care of Madeline. Which turned out to not be a bad thing.

Admittedly, those had been the times Madeline enjoyed mostly. Charlie was the kind of guy designed to be a big brother. He was always there for her. He looked out for her when she started her new school. He helped her with her projects and homework. He was a shoulder to cry on when a boy broke her heart for the first time.

He'd even been there in her more… difficult times.

Mention of Charlie's fast approaching departure to college reminded Madeline of her difficult side, and she felt a beastly growl rumbling up towards her throat.

The one taking Charlie away from her was his girlfriend, Kim. Little miss perfect who came straight out of a vanity magazine. Madeline was loathed to admit it, but Kim was beautiful, especially when compared to herself. A tall, athletic young woman with hourglass curves and a bust that was the wet-dream of all the boys she went to school with.

In comparison Madeline felt like a formless tomboy. Madeline never caught the eye of many boys thanks to a slim build and a flat chest she'd long ago given up on trying to amplify with gimmicky bras. Coupled with formless red hair she couldn't do anything with bar tie in a ponytail, glasses and freckles on her cheeks, Madeline took the status of wallflower and took it to new heights.

It was no wonder Kim had such an easy time convincing Charlie to move to another state for college with her. After all, why would such a hunk like Charlie stay in a dead-end town with his ugly little step-sister?

Another growl bubbled closer to her throat and she was hard pressed to supress it this time. Easy, girl, she scolded the beast, setting her nails into the shag carpet lining the floorboards.

Usually a mental flick on the nose sent the creature running back into the dark corners of her psyche, but this time was different. It was that time of year, the worst time of year in fact.

A prickling flare between her thighs reminded her of the animal stalking the deep edges of her mind, snarling and spitting and desperate to get out. Desperate to take over, direct her flexible young body to pin Charlie to the ground and have her merry way with him. Her mind kept wandering to the stiff rod hidden somewhere in his jeans, fleeting but forced fantasies making her squirm just a little. Rubbing her bare thighs together, Madeline pushed away the desires of the animal inviting her to boldly slip a hand down the front of her shorts and explore exactly how wet her folds were right in front of Charlie.

Living on the edge of these woods made dealing with her mental 'guest' bearable most of the time. There was plenty of space to run in any direction. Miles of countryside to lose herself in away from prying eyes so she could deal with the heat. But still, the detachment from society could be a little difficult. Especially when the only eligible cock for miles in any direction was firmly attached to her brother's body.

The facts did nothing to quench her fantasies though. For the longest time she considered herself closer to Charlie than any other boy in her life thus far. And her attachment to her big brother, fuelled by the snarling thing hungry for the warmth of flesh and salty seed pumping into her core, overrode the natural disgust for thinking of what could be done between the sheets with one's older brother.

Madeline sometimes wondered if that had to do with the beast in her, or the fact they weren't biologically related however. She bit her lip and considered the fact their parents were having sex though. Then immediately wondered what her mother did with Charlie's father and wished she could do exactly the same with her step-brother.

“You always spend so much time out in these woods," Charlie said, gazing out a window. “You love it out here, which is why I figure you'd be the best person to take care of the old place 'till I get back." He gave the treehouse wall an affectionate pat.

“Can I trust you to take care of my treehouse?" Charlie asked finally, and Madeline was ejected from her erotic tryst with the 'should-could-and-will, given the opportunity.'

Madeline's lips parted, her smile just a little wolfish. “You know you can."

That night was an almost-full moon. Not as bad as a full-moon, but considering her state it was bad enough. The change wouldn't force itself on Madeline, but the heat was bothersome enough. She'd spent much of the afternoon when they got home locked in her room, fingers exploring between her thighs to thoughts of Charlie. Her sheets were a sticky, sodden mess of sweat and sexual gratification as she squirted time and time again, biting her pillow so she wouldn't scream “CHARLIE~!" at the top of her lungs. And still the fire in her core burned persistently along with that animal growl egging her on.

He should be ours, it hissed at her. We can have him. He's so close by. All we need to do is take him.

Madeline shook it off and resolved to clear her head with a cold shower. But even that seemed futile as she ended up rubbing her snatch with the showerhead, imagining the spray shooting up into her yearning tunnel was Charlie's twitching cock erupting inside her, hosing her insides and intent on quenching the burning heat eating her up.

The voice of the beast egged her on as she towelled down, the coarse fluff of the towel raking at her swollen and excited quim.

He could be fucking us. Breeding us. Filling our belly with his hot seed.

“Shut up," Madeline hissed as she wrapped a towel about her body. Wearing nothing else she left the bathroom to go back to her bedroom. “He's my brother. And he has a girlfriend." The mention of Kim made the beast snarl viciously. “I only want to fuck him because you're making me feel this way. So just… cool your jets, okay?"

Our body yearns to be stretched about his cock, the beast whispered. It deserves the delights he can offer. Go to him, Madeline. Ask him to quench our desire. Let him spill his warmth into our yearning depths.

“Shush!" she whispered a little louder, then stopped mid-step as she heard a voice.

Charlie's voice carried down the corridor and Madeline froze, wondering if he had heard her talking to herself. Whipping around she realised she was still alone, but she saw a sliver of light spilling out into the hall from Charlie's room. The door was on a crack and inside she heard one side of a muffled conversation.

The heat flared in her slippery trove once again at the sound of his voice, and soon Madeline couldn't stop her body from taking a few awkward steps forward.

That's it, the voice whispered, crooning slightly as its tone crackled like embers on an open fire. Go and claim our mate. We're getting so wet at just the sound of his voice. Go to him. Bend over for him. Let him ravage our depths with…

“Shut up," Madeline whispered softly as she reached the door and peeked inside.

The beast was not wrong. The sound of Charlie's voice was enough to get Madeline off, and secretly she wanted to slide her fingers back up into her snatch while spying on him. Hopefully he was watching porn on his laptop, or having phone sex with Kim again. Then his large stem would be out, gripped in his palm for Madeline to see and enjoy from a distance. She'd fingered herself before while her sensitive ears listened to his moans as he masturbated in the past. But to see and hear as she explored her depths… the excitement of it nearly brought Madeline to a climax there and then.

What she heard as she closed in however sounded more like arguing than pleasured dirty-talk.

“I'm sorry I didn't answer my phone," Charlie was saying, trying his best to remain calm. Madeline heard a muffled reply on his phone, furiously terse and impatient. Kim sounded like she was cracking with anger before Charlie tried to get another word into her irritated rant. “But I left my phone at home. I was out in the woods with my sister… I'm not going to be seeing her anymore when we're off to college… that doesn't matter! She's still my… hello?"

Charlie looked at the phone screen then set it down on the bedside table with frustration, realising Kim had hung up on him.

Now's our chance Got to him. Show him how we care. Then make him scream our name in ecstasy. He won't leave us after that…

Madeline ignored the voice and opened the door a little more. The hairs on her neck stood up a little as the hinges creaked and drew Charlie's attention.

He sat up. Then realising it was only Madeline he lay back again unabashed by the fact he only wore a pair of boxers and a t-shirt. He was rolled on his side, not looking at her as Madeline moved inside. With a less than subtle look she was observing how his taught shirt pulled over his trim musculature. Charlie worked out often. Just the memories of watching him flexing, shirtless and shimmering with sweat… Madeline's nethers percolated a little harder and she crossed her slim legs a little so her free-flowing arousal wouldn't run down her inner thigh.

“Charlie, are you alright?" she asked timidly. “I heard arguing. Was that Kim?" It took a bit of effort to speak the hussy's name without snarling.

Charlie shrugged. “Its fine. She's just excited about the move. Eager to get out of this dead-end town, y'know." Sitting up he managed one of his winning smiles. “I'll be glad to get out of this place. See the world a little."

Madeline feigned a smile and sat on the foot of his bed. Her sleek legs were crossed and turned slightly in his direction. “There must be something you'll miss about home?"

Charlie did one of those fake thoughtful expressions, tapping a finger to his lip. “Well there is this one person I'll miss. A certain little twerp with red hair." They laughed as he reached forward and tousled Madeline's hair.

An awkward silence permeated between them as she brushed one of her errant tresses behind an ear. Madeline was wondering how to proceed, while Charlie sensed there was something else on her mind.

“Never mind me, are you okay? You're just out of the shower and you look like you're sweltering."

Madeline grinned. She was sweltering, yes. But she wasn't hot the way Charlie thought. “I, uh… can I talk to you about something important?"

“Ah! Say no more!" Charlie slumped back and tucked his hands under his head. “Doctor Charlie is in! Hit me with your problems. What's bothering you? A creepy teacher at school behaving like a vampire? Jealous of the girl in your class with the new iPhone? Perhaps one too many gay thoughts about the captain of the cheerleading team?"

With a scoff Madeline leapt on top of Charlie. It wasn't hard, but the impact was enough to make him gasp with surprise, and he would have rolled out from under her if not for Madeline's efforts to pin him down. They'd wrestled like this before and up until that point Charlie had no reason to suspect what was going to happen next.

There was no way of beating about the bush on this. Madeline was driven mad by the heat addling her every cognitive thought. It took effort to stop her body grinding her pussy across the front of his short. She figured she had this thought out, but frankly her ability to plan was gravely compromised. All she could do was press forward and hope this didn't end in tears… or blood-curdling screams.

Sitting up, she straddled Charlie and undid the towel, letting it fall in a heap at her heels. Presented to Charlie was… well, perhaps a body that was altogether less impressive than what Kim had allowed him to see thus far. Madeline barely had breasts, with ill-defined curves on her hips despite a trim and narrow waist. She was proud of her taught little ass though, a boy she'd been with in the past telling her it was her best feature as he had squeezed it and climaxed across her back.

Charlie tried to say something, going by his expression he was likely going to tell her off. But chewing her bottom lip she shushed him with a finger across his lips.

“Charlie, can I trust you to keep a secret?"

Charlie was quiet for a moment, then slowly nodded. “You know you can."

His answer made her smile as she leaned forward and pressed her hands on his chest. She barely weighed anything, he noticed and a darkly perverted part of his brain wondered how easy it would be for him to just pick her up and use her body like a fleshlight.

“I'm going to show you something," she continued to say. “You have to promise that you won't panic. Just remember, no matter what you see, it's just me, okay?"

Charlie, still oblivious to where this was going, slowly nodded. So, Madeline shut her eyes and she let the change that had been nagging her all night take over her body. She let it happen with a caveat, a strong warning to the thing stalking about her mind.

You will not hurt him! Madeline warned the beast, earning a small feminine laugh from the animal.

We will not hurt him, silly girl, the beast snickered. We will make him cum harder than he ever thought possible.

There were sickening cracks and snaps at first, like every bone in Madeline's boy was breaking and reforming. Before Charlie's horrified eyes the girl convulsed and changed. She seemed to cycle through a decade in a matter of moments as her body grew, matured, filled out. But on top of the supernatural change ravaging her body there was an exponential growth of fur. Black, almost like a bodysuit of velvet, the hair sprouted from every inch of her growing body. Her hair changed, the red running away to be replaced by more midnight black as a fleecy scarf of fur wrapped about her neck and tickled into a rapidly growing cleavage. Her breasts swelled as quickly as her hips. Her nails lengthened. Her teeth became pointed.

And her face warped entirely, taking on a muzzle shape before her eyes, bright red and feral, jerked open as the transformation completed.

Straddling Charlie in Madeline's place was a canine creature. Anthropomorphic with all the female humanoid features one might expect to see, her weight pressed Charlie deeper into the mattress as if he was cowering away. But if he actually wanted to cower or get away, Madeline's powerful thighs held him tightly in place.

The fur now covering every inch of her elegant body was black. Her hair was longer, thicker and wavy; glossy as the fleecy mane of soft black fur wrapped about her neck. And her figure…

Charlie's cock sprang to immediate attention as he admired her figure. Nearly nine feet tall now, Madeline's curves had matured and filled out in a way that had taken her mother nearly a decade. Her human stringy features were replaced by an athletic hourglass build, wide hips perched over Charlie's waist, her tail brushing his knees as it wagged enthusiastically and her large breasts stood out in his sex-addled teenage attention-span.

From her trim mid-riff her curves flowed into her bountiful bust, her breasts standing out with an almost supernatural perkiness considering their enormity.

As Charlie lay flabbergasted, staring at her massive tits, eyes lingering on the dark, meaty nipples showing through her fur with particular hardness, the drool practically ran from his mouth. His erection was stretching his boxers, pressing up between the magnificent soft valley between the globes of her ass.

While Charlie was too stunned by the curvy sex appeal to realise this gorgeous creature sitting on top of him was a werewolf, Madeline looked down at herself in a little bewilderment. She was seeing, but not quite believing, though not for having caught glimpse of herself as she howled at the stars on nights of a full-moon.

Usually when she turned the beast took over, and Madeline fully expected it to have ripped Charlie's clothes off and started fucking him like an animal in heat by now. Yet Madeline maintained total control, her extremities obeying her commands as she looked down at a luscious body that put even Kim's figure to shame.

The beast answered before she could even ask. A gift. Look at how he's stunned at the sight of us. He is ours for the taking. Enjoy this night at the reigns of our perfect form. Make him scream our name in ecstasy. Enjoy every sensation of his cock sliding into our body.

A smirk taking Madeline's muzzle, she leaned forward heavily. Taking Charlie's stunned face in her own, the werewolf tilted her canine head to one side and pressed her mouth to his in a deep kiss. Charlie melted under her. The way his body tensed with shock and fear eased away as her tongue slipped past his lips and explored his mouth. Before long he explored back, eyes fluttering shut as he let out a contented sigh through his nose.

Before long Madeline became aware of the way he rolled his hips slightly and felt his erection rub between the globes of her ass. His hands were planted on her wide hips, enjoying the curvature of them as she broke the kiss, a line of drool still connecting them before she glanced over one shoulder with a sly smile.

“Someone approves of my new look," she said huskily, reaching back and giving his rigid member a playful squeeze.

Charlie seemed to open his mouth to say something; then realised he had nothing intelligent to say so just closed his mouth again.

Lifting herself up slightly, Madeline eased her way down until her face was in line with his crotch. All the while she moved in a way Charlie didn't recognise; sporting the mixture of an agile apex predator and a sexually graceful lady, both of whom were on the hunt.

“Happy to see me?" Madeline purred as she settled on his legs. Her lips stayed parted just a little as she looked up with an arousing type of innocence, breathing hard as her face hovered very close to where Charlie's cock bobbed with excitement.

Her hands slid up his thighs, then tore down his shorts with the enthusiasm of a Black Friday shopper, making Charlie wince. But as if unsympathetic, Madeline remained focused on the bobbing prize before her eyes, watching its motions with unerring interest.

Her hands fell onto the rigid shaft with the same enthusiasm. Her breathing increased with her excitement as she stroked up and down his length. Charlie groaned as a whole new set of sensations crashed about him. Kim had never touched him like this. Usually she just made out with him and rubbed him to climax through the fabric of his boxers.

Feeling him throb between her palms excited Madeline's new body. She was almost unaware of what life had been like before. Like it was some distant dream, that none of it had been real and that she'd been an automaton until now, finally set free to unleash every pent up sexual desire she'd built up for Charlie.

In one plunging motion of Madeline's head, his cock disappeared into her mouth and slid across the slick wet texture of her broad tongue. In the same instance the head plugged the back of her throat, and she took it in with a throaty gulp. The motion was effortless and she didn't balk for an instant. She even held him there, massaging his length with her tongue and throat.

Pulling back almost immediately she slid her mouth off his member, then giggled at the way it glistened wetly and bobbed as if eagerly asking for more. She quickly planted a little lick across the crown, making Charlie shudder with delight.

“Is my mouth good?" she asked innocently. Charlie could only nod the jittery nod of a virgin giving an older, more experienced lover his consent. It made Madeline smile as she teased the crown with another playful little lick.

Brushing away a few errant tresses, Madeline shut her eyes and slid her lips about his shaft again. Once more his glans disappeared between her slippery throat muscles as this time she began bobbing her head up and down. Charlie couldn't move, couldn't think as his sister started fucking him with her mouth. She didn't let up, didn't pause or gag as if years of oral training had turned her mouth into just another orifice designed to bring him pleasure.

Like an eager little servant wanting more than anything to make her master cum, Madeline suckled and hummed, every pleasured throb of his cock on her tongue pleasing her in some lewd way. It didn't take long for Charlie to lose his mind and he almost blew his load into Madeline's mouth.

Fortunately, his sister had her tricks.

Pulling back, the head popping out of her wet throat she pursed her lips over the crown and squeezed his glans for a protracted moment. Charlie eased, coming down from the heights of orgasm and didn't blow against the roof of Madeline's muzzle. Still a large glob of precum oozed from the tip and onto her canine tongue, which Madeline lapped it up with a pleased “mmmmmhh~!"

Sliding her lips off his cock, leaving it slick with a mixture of her saliva and pre, Madeline gave it one last long lick. The final taste test, so to speak. Her tongue hooked about his balls, making Charlie squirm with surprise, then made its long, slippery way all the way up the underside of his shaft before circling the tip where she planted a sloppy kiss. Her half-lidded eyes were searching his face for approval the whole time. She got it in droves as she enjoyed her special treat from top to bottom – or rather from bottom to top.

Before long is length plunged back into her hot mouth and Charlie couldn't hold back anymore. He was moaning differently, Madeline noted. Differently from when her sensitive ears heard him masturbate alone, the times she'd simultaneously rub her snatch furiously to the fantasy of her quim replacing his hand.

She felt her Kegel muscles clench about the empty void inside her she so desired Charlie's cock to fill.

Soon, girl, the beast reminded. We'll have this magnificent thing inside us soon.

Madeline managed a little smile even as her lips were pursed about Charlie's stem. Technically he was inside her already. The thought made her shudder with pleasure and she continued to suck as if she practiced every day.

As Madeline did there was a vibrating hum on the bedside table. Out the corner of her eyes she saw the screen of Charlie's phone light up as the device danced across the table to a familiar tune. A custom ringtone that identified the caller as Kim.

Looking up, her muzzle still caressing Charlie's length, she saw him look over at the phone, then back down to her. Madeline could feel the beast rumbling darkly in her mind, but she ignored the bloodlust rising her choler. Shutting her eyes she folded her tongue about his shaft and pressed down until he bottomed out in her muzzle. From there her tongue slid out over her bottom lip and hooked its slippery warmth over Charlie's balls.

He reacted in and instant and she felt with a rising sense of pride his hips press tighter to her face. His hands found her head, one lacing his fingers into her hair and the other gently caressing the fuzz on her ear. His new and excitingly alien moans egged her on and she began bobbing her lips up and down his stem with fresh enthusiasm.

He as ignoring Kim! She was the only woman for him. That excited her to no end and her pussy practically gushed into the bedsheets. She was overcome with a powerful sense of pride. She was no longer ashamed of her supernatural affliction. Her werewolf form was suddenly a beautiful gift. She was the perfect woman for Charlie and he didn't even consider another as Madeline eased him closer to heights he'd never touched before.

It's a powerful feeling, isn't it? To make a man desire you and only you?

Madeline was loathed to do it, but it was one of the few points she and this cursed beast prowling her mind could agree on.

She knew Kim never did this for him, never treated him the way he ought to be treated. So Madeline went all the way. She didn't stop for a second, despite knowing what was about to happen as he swelled on her tongue. He pulled at her, breathlessly saying something about stopping, but Madeline ignored him.

She thrust down one more time with a throaty gulp and took him all in as he spent down her gullet. Her throat flexed, massaging about his spasming muscles as he rolled his hips into her again and again. His back arched off the bed for a moment before Madeline eased back, a few weaker spurts of his semen spraying the roof of her mouth and spreading a wonderful salty tang across her tongue.

If she'd been asked if she would enjoy guzzling cum a week ago she probably would have answered that she'd be grossed out, having never sucked a dick never mind taken a load in her mouth before. Yet still she swallowed the lot before lapping up whatever had escaped – cleaning her favourite toy like a good girl ought to.

Licking her lips, she looked Charlie in the eye as he desperately caught his breath.

“Good?" she asked gently.

Charlie could only nod before they were interrupted by another hum as Kim called again. Looking over, his phone holding his interest now, Charlie slid from the bed and picked it up. Madeline felt something explode inside her as he stared at the screen. All that sense of power she had felt earlier leaked away.

Then Charlie did something unexpected. He tore the back off his phone, removed the battery and tossed both halves across the room before turning back to her with a smile.

“I thought you were going to answer that," Madeline said, a hurt look lingering in her eyes. She made her way to the edge of the mattress and sat, her eyes level to his.

Charlie shrugged. “I'm not in the mood for another argument over nothing right now."

Madeline grinned wolfishly. “So… you're reconsidering moving to another state for college?"

Moving closer, Charly softly caressed her furry cheek, then laid a short but passionate kiss on her lips. “Why would I move to another state when everything… every_one_ I need is right here?"

They kissed again, Madeline pressing her tongue into his mouth this time before she pushed him back a few paces. It wasn't a hard shove, but it was enough to get a look of confusion from Charlie. At the same time the towering werewolf turned with cat-like grace and dropped to the ground. On all fours she pressed her face to the floor, sticking her ass high up in the air and bearing her sodded all to him.

“Fuck me, Charlie," she whispered as his confusion melted away. She noted with a glimmer in her eye that his soft length practically leapt to attention as she reached between her legs and with two fingers spread her sodden labia apart with a wet smack. The velvety pink flesh inside was dripping with her juices, the opening winking invitingly as her depths begged to be plundered.

Her voice crooned as she dipped a finger inside and gently rubbed a circle about her hard clit. “Mate me. Make me yours. End my heat. End my suffering."

Charlie didn't need telling twice. Stumbling forward, kicking off his shorts that dangled about one ankle along the way, he ripped off his shirt and laid his hands across the wide, firm globes of her ass. Her hips were wider than his, offering plenty aside from her bushy tail to hold on to. The feel of her furry curves alone nearly set him off alone, and he had to take a breath to calm himself before aiming the crown against her spread labia.

Madeline's eyes fell shut as she moaned, feeling the warm contact she'd craved for so long on her nethers. But as he pressed, in his inexperience Charlie's member slipped up and between the soft cheeks of her ass, missing the mark entirely and failing to spear her.

They collided, his waist against the soft curves of her ass. It was nicely rounded with sumptuous soft curves that hardened Charlie's erection even more. But having never done anything close to this with Kim, he was out of his depth and unsure how he was even going to get in. Charlie wasn't naïve, he'd seen the doggystyle position in porn before. But having never part-taken, he wasn't even sure how his aim ought to be adjusted.

The anthro wolf in Madeline's place seemed to have inherited a whole slew of tricks though, and catching his member in one hand she guided him in with one deliciously erotic, slick thrust. She eased her body against him as his head speared her swollen, eager lips and found that slick, quivering opening of velvet pink flesh that waited excitedly within. Her hot core yielded as he plunged in and Charlie groaned at the tightness of this magnificent angle.

It felt strange at first, like his lenght was bending out of shape, twisting the wrong way. But he adjusted to the sensation of Madeline's wet warmth sucking in his cock, inch by inch until he bumped into her depths. Madeline flexed under him, moaning with delight as he bottomed out, his crown meeting slight resistance at her cervix, kissing her sensitive core in a way that drew a long “oooooooh~!" from the woman.

Charlie grabbed her ass for support, tangling his fingers in her fur and setting his digits into the soft malleable flesh. His body was moving on pure instinct now, driving him to push as deep into Madeline's soft folds as he could, but at the same time pulling him back.

There was resistance as he drew backwards, his arousal slick with Madeline's excitement, glistening as it came free of the stretched lips of her pussy. A sucking motion, like her body was trying to hold him in place pulled Charlie back in, and as if to attenuate the point Madeline rocked eagerly backwards to meet his forward thrust, his hips meeting her gorgeous thighs with a slap of sweaty human flesh on matted canine fur.

Her tail flicked side to side across Charlie's chest encouragingly as they started to find a rhythm. While Madeline turned her face to one side, folding her arms under her breasts and planting her cheek into the carpet, Charlie was doing his best to pace himself, to make all this last as long as possible. He wanted to give Madeline what she was howling for, to fuck his beloved step-sister into an absolute stupor like Kim had never let him before. But he had to reign in his excitement or he wasn't going to get close.

It seemed though that it didn't matter when Charlie finished, Madeline was going to be satisfied.

Her body clenched and Madeline's eyes rolled, mouth agape in a silent scream as Charlie felt a heat wash over his groin. Her hips were jerking uncontrollably, almost like she was having a seizure and it took him a good second to realise what was happening before she squirted. Madeline let out a shuddering cry, orgasming mere minutes into intercourse. Years of pent up sexual repression came out in one gushing torrent as Madeline lost control of herself. She underwent something of a seizure, her toes curling as a jolt of pleasure raced its way up her legs, swirled like a fiery tornado in her yoni then zapped the rest of her body to leave a mild tingling behind her lips.

Her long ecstatic moan shook with the rest of her body as her wet orgasm left Charlie's shaft and balls totally soaked in liquid desire. And she didn't stop, propping herself up on her arms so she could rock back and forth with a fresh bout of energy, her large breasts swinging with every motion as she feverishly continued to fuck her brother.

All Charlie could do was hold on for dear life, and as Madeline flexed to press more of her body against his chest he caught her around her trim, furry waist with one arm, the digits on his other hand sinking into one of the enormous boobs swinging with every orgasm-lubricated pelvic thrust that slammed his length up into her tight womanhood.

“Cum, Charlie. Cum inside me. I need it. I need to feel you fill my belly."

That was all it took to set him off.

Digging his fingertips into her fur, Charlie slammed forward and bottomed out all the way to her core, a jet of cum erupting into Madeline's womb. He'd never cum so hard in his life, not across Kim's hand, not even into his own palm. The edges of his vision darkened and he felt like he might pass out as his essence burst from his tip and into the werewolf's wet, yearning womb.

Spurt after spurt planted his warm seed deep inside Madeline, drawing a long animalistic howl from the wolf, loud enough to echo out into the night and spook the nearby wildlife.

They barely even paused to catch their breath, their mixed sexual gratification still dripping down their thighs as they repositioned to go again. Charlie's erection didn't wane for a second as he buried his face into Madeline's bountiful soft pillows. And the raging heat of arousal still lingered in Madeline's core. She leapt onto the bed and lay back, Charlie pressing her thighs apart as he slid his cummy member into her snatch again. And with the same tireless vigour as before, they fucked in earnest.

Madeline's voice sang a long tune of ardent pleasure, keening at the top of her lungs like a shameless slut as she squirted time after time on her brother's cock. It seemed all it took was a few dozen thrusts and Madeline would orgasm again. Twice, three times – and then as Charlie found his next wind he lost count. He could feel the carpet under his feet sodden through with the waterfall of pleasure running from and sweat and joy flowing from their bodies. Streams of her thick, slippery juices were flung back and forth with the vigour of their love-making, and similar streams of drool dangling from Madeline's bottom lip did the same as she lost control of her body. Her eyes were half-shut, the whites under her irises were all that were visible. Mouth agape with a dumb, rapturous expression mirroring Charlie's own relaxing every muscle in her canine face, her head jerked at the apex of every slam, her hips rocking back and forth to meet Charlie's forward thrusts.

The wet noises of stuffed pussy and the vocal appreciation of the long, passionate strokes became a beat to which they danced to. Like creatures going bump in the night, they fucked tirelessly, hoping the moon could stay out forever.

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Curse of the Caller - ISBN 9781370248896 [Name your own price or just read it for free!]

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