The Sisters' Heat

Story by Cinos on SoFurry

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Two werewolves decide to punish a rather unethical businessman for his misdeeds... while making a new stud for themselves to enjoy, since they're about to go into their heats. As for said businessman, he has always prided himself on his perfect self-control, but can any man truly resist not just one bitch in heat, but two?

Anonymously commissioned. Kind of a cyberpunk setting!

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It was dark; a long night after a long day at the office. Daniel still had so much coffee in his system that he was fairly sure he wouldn't sleep at all, but there was a limited number of hours he could work each day. Not due to any personal weakness of his, but because of the government and their laws. If it was up to him, he'd have been the CEO of his company yesterday, but he was limited in the amount of effort he could put in. Ah, well. He'd get there. Inevitably. Cream always rises to the top, he thought. Granted, so did pond scum, but it was easy enough to see the difference. Especially in this industry. He had seen a lot of characters working for Petrosynth. Some were outright psychopaths, constantly arguing for dumping waste wherever they could, consequences be damned. Others were outright evil.

Daniel, for his part, was a workaholic more than anything. He didn't particularly agree with the company, but he agreed with the money they paid him, and over time he'd learned to fully control every single aspect of his emotions, or at least, close enough. So, when the resident maniac suggested they lobby the government to let them dump volatile fluorocarbons into the rivers, he didn't raise a single eyebrow. When they succeeded and the company was liable for acres of dead forest, he didn't twitch. Daniel never showed any anger, jealousy, or sadness. Sure, he felt them, but those emotional responses were for animals, not humans, and particularly not successful humans like himself.

He simply did as he was told. Was it the most moral life? No. But it had made him very successful, and very rich. It earned him a living and then some, that he'd eventually invest in a family he'd have one day. What did a few dead wolves in the forest matter, in the end?

Daniel straightened his tie just in case anyone happened to see him leaving. Appearances were everything at Petrosynth. The slightest wrinkle would get you written up, and Daniel had learned to keep his look immaculate quickly. He waved a brief goodbye to the security guard on his way out. The old man had worked there seemingly forever, and Daniel had never caught him asleep. He was always watching with that hawk-eyed stare. Into the elevator, then into the garage; it was all routine that he barely thought about at all.

There: his half-a-million-dollar car, his pride and joy – at least it'd likely remain so until he had a family to focus on – gleaming a fiery orange in the well-lit garage. 300 horsepower and a ride so smooth he arrived at work more relaxed than when he left home. The lights blinked automatically as Daniel got near, but just as he was about to reach to open the door, he heard a sound. A growl, like some kind of trapped animal. A brief glance revealed nothing, but the instant Daniel turned his attention back to the car, something rushed at him from a dead angle. A rapid series of clacking steps on concrete, and then he was flying through the air as something incredibly heavy and yet strangely soft tackled him. Daniel rolled a few times, pain shooting through his body, and then hit the opposing wall. Instantly, the world went black.

He wasn't out for long, but by the time Daniel regained consciousness, it was somewhere dark. An alleyway, maybe. No. He couldn't hear the city any longer. There was silence, which meant he was outside of it already. Something rustled near him.

“What do you want?" he called out, refusing, as he always did, to show fear. “If this is a kidnapping, just let me pay now and I'll have insurance sort it out-“

“Oh, it speaks," came one voice, husky but unmistakably feminine.

“Mm. I didn't know they could with ties that tight," another replied, this one a little higher in tone.

Daniel couldn't see anything in the darkness, but he listened. The two voices barely sounded human at all. What had he been attacked by?

“Such a handsome specimen, though," the deeper voice continued.

“He'll look better as a wolf," the other replied, derisively.

A wolf? Daniel had heard of werewolves, of course, but they weren't real. That was preposterous. Werewolves were a scary tale for children. “Look, I don't know what you want, but I can pay you," he offered.

And then, something approached him. A black shape slowly coalescing in the darkness. A werewolf. There was no denying it, no matter how much the rational part of Daniel's mind protested, no matter how badly he wanted to believe he was seeing something else. She was hunched over, with a mouth full of lethal-looking white fangs, and her amber eyes felt as if they pierced Daniel's very soul, paralyzing him with numbing, instinctive terror.

“We want to teach you a lesson. And at the same time, we want everything. Heat season is approaching, after all," the wolf laughed in a mixture of barks and growls. “Oh, don't worry. What kind of man hasn't dreamt of fucking two sisters at once?"

Before Daniel had any time to react – to as much as stutter out a response – her jaws snapped shut around his arm. Blinding pain surged up from damaged muscle, and he screamed at the top of his lungs. It was a brief nip, and following it, the other wolf quickly tore off his blazer to use it as a makeshift bandage.

“Wouldn't want you dying," she grinned. “Not before you've done your duty, at least."

The pain was so intense that Daniel found himself fading, as if his mind deliberately opted for unconsciousness rather than face the agony. Yet, there was a strange fuzziness to the pain, and as Daniel slowly lost consciousness, it already seemed to be fading. He wasn't aware of any of it, but the moment his world went black once more, his body had already finished healing, helped by the werewolf's infectious saliva already changing him.

“The camp or the cave?" one sister asked the other.

“Cave. We're not sharing someone this juicy with anyone else," the other replied, and so it was decided.

The first sister hoisted Daniel onto her shoulder, and the three of them disappeared into the deeper reaches of the forest far outside the city. The very same one where Petrosynth had earlier killed so many trees, and which was, unbeknownst to all but the most powerful executives in the company, home to a particularly infamous – for lust, rather than violence – pack of werewolves.

The next time Daniel stirred from slumber it was in a large, fire-lit cave. The first thing he did was clutch his right arm, only to be surprised by there being no pain. No bandages, and no damage at all. Last night's events kept scrolling through his head. Werewolves. He'd been taken, and bitten, which if the stories were true, meant that he'd be changing soon. There was one central thought to it all; a lament of why me?

He struggled up into a sitting position, every limb feeling heavy and every muscle stiff. In the arm he remembered being bitten, there was slow thrumming sensation, a numbness but also a heat. He massaged it, the feeling reminding him a little of a limb falling asleep. The two wolves were in the cave with him, and the air smelled like smoke and wet fur. One grey, one pitch black.

“H-hello?" he stuttered, and the two immediately turned to look at him with those hungry, lupine smiles.

“Ah, he awakens. Finally," the deeper-voiced, grey one spoke.

“We should introduce ourselves. He will be our stud, after all," the other grinned.

“Your stud? What do you even mean?" Daniel replied. “Let me go, I have a job and a…"

He trailed off. What did he have other than his job, truly? Still, it didn't matter. These beasts had no right to hold him!

“And that's it, that's all you have, a job that destroys our home," the first wolf snarled.

“No, no, sister, we'll gain nothing by arguing with him. He will give in eventually," the other interrupted, with a broad, almost warm smile.

The other went quiet with a low, displeased rumble.

“I am Willow. This thorny one is Acacia, as the name would imply," the other wolf introduced themselves. “And you will, regardless of what you want, be our stud eventually. Just like everyone else bitten by the wolf, you won't be able to resist changing forever. So, you might as well enjoy the ride."

“But why? Why me?" Daniel protested.

“Other than what Acacia just told you?" Willow asked, rhetorically. “Because the harder they try to resist, the more delicious their surrender is. And you look like a cut of prime rib."

“And if I don't?" he asked.

“See? That attitude is exactly what I mean. It's adorable. Delicious. Our heats are coming. In a week or so we'll both be sex-crazed beasts all but begging, or forcing you to mount us," Willow narrated. A quiver visibly went through her bestial yet undeniably feminine form as she fantasized of it. “What man could resist? What wolf could resist? And the wolf is already within you, waiting to be set free."

She paused for a moment, licking her chops.

“But say that you do resist, by some miracle of willpower. That you deny all your instincts and emotions as you do at work. That for the entire month of our heat, you do not once try to mate with either of us. That you do not shift, suppressing the wolf just as you suppress your humanity. Then, we'll set you free."

“Deal," Daniel said.

“Not that you have any power here. No agency. No choices. You're fully at our mercy. Any deal is ours to make," Willow rumbled. “But as far as you're concerned, you can trust us."

“Right," Acacia, who was presumably the bigger sister, growled. Her grey fur seemed to bristle as she spoke. “What she said. But try to escape and we'll simply eat you instead, or our kin will. Do not venture too far from the cave. They can smell a human miles away, and even if you avoid them, you'll starve before you reach the city."

Well, those were the terms of their “agreement". Daniel had learned not to question things, especially when there was such a difference in power. He had no choice but to play along, so he would, for as long as it took. And as always, he showed no emotion.

That night, they ate well. Acacia brought in a deer she had caught, and while the sisters preferred their meat raw, they still kept a fire for warmth, a fire that Daniel used to sear the meat enough for his human stomach. Already, though, those instincts that'd entered his body with the bite were making themselves known.

He found himself drooling at the sight of the raw meat the sisters were tearing into, an inkling of an urge to join them in their feast. There was, increasingly, also a kind of sense of longing for something he couldn't quite recognize. And he was growing more sensitive to scents. The fairly unpleasant fragrance of wet fur had become something almost sensual in just a matter of hours. Yet, Daniel shook his head. He wouldn't give these bitches the satisfaction of surrendering or succumbing, no matter how much his tainted body urged him to. If werewolves existed, then so did a cure; he'd just have to find one once he was back in the city.

Daniel couldn't, of course, deny that the meat was exquisite. Freshly flame-broiled venison was a treat worthy of three-star restaurants in the city. That much, he was willing to indulge in, no matter how much it also fed his new inner wolf. He had to eat, he reasoned, or he'd die. He closed his eyes, tearing off another piece of tender, juicy, and perfect meat. Oh, it was almost worth having been kidnapped by these crazy she-wolves. Compared to the mostly synthetic meat that he ate in the city, this tasted like heaven. Like primal satisfaction.

The wolves weren't too pushy the first day or two, nor did Daniel have much to do. He simply existed. Brief walks outside of the cave, and eating whatever the sisters brought him. Yet, even before their heats had truly begun, Daniel did notice a certain feminine sensuality to them, despite their bulky bestial forms. They'd stretch, making sure he caught a glimpse of those pink lips hidden beneath grey and black fur. He did feel some twinge of desire, but his mind was still set on finding humans attractive, not these half-wolven beasts.

He still could scarcely believe that he was being held prisoner by beasts he hadn't even believed could exist. Much less that they both seemingly wanted to mate with him.

Thankfully, he didn't feel much of anything. Even when the sisterly wolves began to try to tease him – by spreading their legs wide as they slept, by casually massaging their breasts where Daniel could see, he remained cold as ice, which frustrated the two. That was, until their heats started to kick in.

The first thing he knew of that was a musky, spicy, and deeply feminine scent reaching his nostrils on one cold morning. The human part of Daniel, still fully in control, didn't really register its implications. To him, it was merely a pleasant scent akin to a perfume. Yet, it tickled that buried part of him, the animalistic side strengthened by the wolfish infection and already rattling its cage. It smelled interesting, as if he wanted to taste the scent, perhaps to smear it all over himself.

The first day, only the scents were different. The heat hadn't yet seized control of the sisters' minds, but they teased him mercilessly either way. After a short walk to keep his blood flowing, Daniel returned to the needy and surprisingly feminine moans of one of the sisters, leaned against a cave wall, and eagerly rubbing her swollen, soaked sex.

That was exactly when, for the first time, his senses registered one of the wolves as attractive, as sexual. He could feel blood rushing to his cock before he managed to tear his gaze away from her. All the urges of both his long-suppressed emotional, animal side and the growing wolf half of himself came rushing in. He wanted to bury his face into her dripping sex and lap at her like a wild beast. He wanted to – Daniel found himself growling under his breath, his hips twitching with instinct – mount her.

He shook his head. No, he could control himself. He wasn't going to give these two wolves the satisfaction, no matter how wonderful they smelled, no matter how needy their moans. Instead, he turned around at the cave entrance and headed back into the wilderness to clear his mind somewhat.

Yet, primed as his instincts were by the infection and the heated scent of the werewolves, he kept falling into an almost trancelike state, an onslaught of new sensations. Even if nothing had visibly changed on his body yet, his sense of smell was tenfold as sensitive as it had been. His muscles ached to be put to use chasing prey until they burned with exertion. He could smell a wild deer somewhere not far away and had to focus, to remind himself that his body was still human, to stop himself from chasing it through the underbrush.

It was day one of the month that'd decide his fate, and he was already having to fight for control of his own body. For the first time, Daniel wasn't sure if he could manage it. The dull throbbing of his arm was getting worse, too. Daniel peeled back the sleeve of his, by now, rather dirty dress shirt and looked at it. There was only faint scarring where the werewolf had bitten him, but worse than that, the hair there was starting to thicken, almost to the point of fur.

Quickly, he covered his arm again. Deep breaths. You can handle it. He'd read plenty of stories about werewolves. If one didn't succumb to the animalistic behavior that the wolf wanted, they could fight back the infection, even heal from it fully. It was as much a curse as it was a virus. All he had to do was to adapt the mindset of an ascetic. To deny himself all pleasures for a month, no matter how the sisters tried to tease and torment him. To simply exist, breathe, meditate, and only focus on the outside world for long enough to eat. He could do this. He had survived board meetings where anyone who said the wrong words ended up with cement shoes at the bottom of the river. These werewolves, crazy as they were, were nowhere near that bad. He could do it.

He sat there, in the middle of nowhere, slowly forcing back the beast and all the urges it stood for, until the sun had begun to set. Only then did he turn around and return to the cave, where as always, the sisters awaited him.

“Mmh. Where have you been? Not trying to escape, I hope," Willow rumbled at the sight of him.

“Proving to myself that I can control this," he replied, his voice a steady monotone.

“Hah! No chance of that," Acadia laughed. “No man can control himself around a woman – or bitch – in heat," she continued. “You'll be begging to fuck us in a few days. A week, maybe. But you will."

While what she said might've been true of an animal, or even a werewolf, Daniel was neither. Not yet. If he had his way, he never would be, either. That was the framing for the rest of his month. Resistance, self-denial, and spiting the two sisters until they either killed him or let him go. Nothing else was as much as an option.

That day was the last calm day. The sisters were still in full control, and they fed him as always, though not without ensuring that he saw every inch of their naked bodies, their nipples peeking out from beneath rich fur.

“Why don't you two just find a male werewolf?" he finally asked, already bracing himself for a verbal slap in return. But it never came.

“Male werewolves always have a… a certain arrogance to them," Willow murmured. She'd already laid down for the night, staring at the roof of the cave. “The born ones do. The converted ones, like you will be, typically understand their place better."

“So, you hope that I'll be a submissive stud for you two?" Daniel asked with a sigh that he couldn't quite suppress.

“Not submissive. Just not obsessively, possessively, stupidly preoccupied with dominance. No, you'll be our horny breeder," Willow replied. “And there is, of course, the fact that watching you break will get me so fucking wet."

Daniel didn't really know how to react to that, and his apparent look of bewilderment made the werewolf laugh cruelly. “Oh yes, you will be adorable when you embrace that you're just a horny male beast!" she emphasized. “How does it feel that your first children won't be human? Knowing that very first offspring you sire will be conceived with a wolf?"

Once again there was that jarring sensation in Daniel's head. His human side, defiant, detested the idea. And the wolf inside him felt eager, to be inside the other wolf, as it were. A deep-set kind of longing for it, for those simple and instinctive pleasures. It felt like hunger, and denying it, like starvation. Thankfully, Daniel was used to controlling his emotions, no matter how the blood rushed to his cock at Willow's teasing words.

“We'll see, I guess," he replied. “Will you actually let me go if I don't transform?"

“Yes," Acacia growled from deeper in the cave. “But nobody has ever managed."

“And you won't force me if I do?" he prodded. Not that he could do anything about it.

“No," Willow answered. “We won't force you until you surrender freely. After that… you'll be our toy. And you'll love it."

The odds weren't good, and the heavy truth of the matter settled like a stone in Daniel's stomach. Still, he had no choice but to endure. At least, he was afforded a good night's sleep, for the last time.

The next morning, he stirred to the sensation of warmth. Warm wetness along his leg. He opened his eyes and discovered Willow grinding against him shamelessly, the warm sensation of the puffy lips of her soaked pussy slipping along his leg accompanied by little whimpers from the werewolf. And her scent was so overwhelming that the instant it reached Daniel's waking brain, his cock shot up to full hardness in response.

“Rrf. The heat has begun," Willow growled, stating the obvious. Yet, she made no move to impale herself on him, even if it was what her body no doubt demanded. She shuddered at the sight of it, however. “You smell wonderful," she added with a hiss.

“I'm not going to help you," Daniel said, though already he could feel his resolve crumbling. The she-wolf rubbing herself on him felt so very sensual. She was ripe and ready for him to breed, as was her sister. If not yet, the very soon.

“Are you sure?" Willow huffed. She stopped moving, and then sprung onto all fours. “What if I do this?" she asked, and leaned in over the prone man.

Her broad, lupine tongue darted out and coiled around his stiff cock. He twitched hard at that warm sensation caressing his glans and couldn't help but thrust up into it.

“It seems like your body wants it, just the same as ours do," she grinned. “And what the body wants, the body will get."

If it wasn't for the fact that it'd seal his fate as a werewolf, Daniel knew he would've already given in. Self-control or no, there was only so many free offers of sex someone like him could turn down. Yet, the fact that he'd be permanently debasing himself, turning himself into little more than a beast if he did, held him back, granting him that sliver of self-control. Enough to say no even as Willow lapped along the length of his cock.

“No? What a difficult case you are. So willing to deny yourself of all life's pleasures," the heat-struck wolf growled. “Yet, all you need is more time."

Willow left him there, raging hard and with his balls feeling like they might explode, walking away with her tail held high to help fill the air with her needy pheromones, and of course, to let Daniel stare at her sopping wet pussy, strands of her thick arousal dangling from swollen lips. Again, that urge to pounce, to pin her down, to drive his aching cock deep into her fertile cunt and- rrrgh. Daniel forced himself to look away. This was going to be much, much harder than he had anticipated. He was going to have his head full of the sisters' heats every waking moment as long as he remained inside of the cave, and he doubted they'd let him simply masturbate.

Would it even be enough to spill his seed that way, rather than inside them? Would it satisfy the ravenous hunger growing inside him? Yet, no matter what, Daniel wasn't willing to leave his life and career behind. No matter how liberating it'd feel to simply rut and howl and hunt. Even the prospect of not having to think for once in his life, not having to worry was powerful, intoxicating, almost as seductive as Willow's warm body and dripping sex.

He ran into Acacia outside. The older sister was more reserved despite her evident, ravenous need. Reserved, or perhaps more dominant. She made no immediate offers to let Daniel mount her. Rather, she simply observed, staring at him like a hunter at her prey. Daniel chose to ignore her; if she pounced, he had no chance, and as such, it didn't matter what she did. Instead, once again, he reached a quiet spot in the woods and sat down to clear his head. He could still smell Willow on himself with how she had marked him, though, which made it all the more difficult. Every time he closed his eyes to picture something soothing or tranquil, a whiff of her heat brought his thoughts back to those wolven instincts again.

Maybe giving in wouldn't be so bad, spoke the traitorous voice of lust in his head. They'll never let you go anyway. You might as well retain some dignity and enjoy your transformation.

It was all lust-driven rationalizations, excuses, and justifications for simply succumbing and giving the sisters what they both wanted. A bellyful of pups. The pleasure he knew he'd feel had his cock dripping precum already. The satisfaction would be twice as intense. And he'd never return to civilized life again. What happiness could a job in an office bring to someone used to mating like an animal in the wild, to living in the moment like a beast?

He caught himself with his fingernails digging into the log he was sitting on in frustration, but not before the log cracked, splintering between his fingers. Some smaller changes had already occurred, there was no denying that, but Daniel's hope was that he could arrest those changes there, letting them go no further. It was, admittedly, a faint hope. Even the fresh air wasn't enough to clear his mind, now. The sweet, musky heat of the wolf-sisters seemed to linger in his nostrils, in his head, and he found himself remaining rock hard even where he sat, his achingly hard cock demanding to be pleasured.

If Daniel had been a more average man, he might've done just that. And maybe it'd have lent him some resistance against the merciless teasing of the sisters. Yet, he wasn't used to moderation, he was used to self-denial, and trying to ignore and suppress the things he felt.

He returned to the cave once more, for dinner of relatively fresh venison. Though their heats precluded the idea of hunting – prey would smell them miles away – the sisters had prepared and preserved one of their older kills. But now, they hungered more for what only Daniel could give them.

“We promised not to force him, didn't we?" Willow asked her sister, loud enough that Daniel was no doubt meant to hear her.

“Yes, to not force him to mate with us," Acacia grumbled in response.

“There are other forms of pleasure he could give a pair of bitches in heat," Willow continued. It was theatrical, almost. As Daniel watched, finishing his meal, one of Willow's large, half-human hands slipped between her legs again to wetly caress herself.

“Exactly," Acadia growled. “You could force him to lick you."

Slowly the both of them turned to face Daniel. He thought to protest, but only briefly, before his shoulders slumped in defeat. Yet even then, he felt more than a little excited at the thought of being forced to pleasure one of the sisters. As if it somehow freed him of guilt.

“Down, boy," Willow barked. “Lay down."

Daniel obeyed, for what choice did he have? Willow approached him with that predatory, wolfish grin. He wasn't really able to hide his excitement, conveyed in no uncertain terms by the eager throbbing of his cock. Willow moved fast; she straddled the human, and then planted her warm, slippery cunt against his face. He barely had time to take a breath, first. The wolf's impatient neediness was obvious, and not only from how her juices soaked Daniel's face.

“Lick," she growled, grinding her hips down.

Daniel, once again, obeyed. He stuck his tongue out and lapped along the werewolf's soaked, feminine groove. At first, he did it hesitantly, purely to avoid a worse punishment, but when her tangy, warm flavor coated his tongue, it was like a jolt of electricity surging through him. It awakened a hunger inside him, and soon he was lapping up her arousal eagerly, in a very lupine way despite not much having changed yet. At the same time, breathing in the fragrance of her heat, so close to the source, was driving him wild, sending shivers through the very core of his being.

He thrust his tongue deeper into Willow's clutching heat, drinking deeply and yet almost involuntarily of her lust, each lick only inflaming his own need more. Dimming his thoughts, quieting the voice of hesitation, and most of all, eroding his attempts at self-control. But he couldn't resist, not with how wonderful the wolf tasted. So, it was no surprise that when Willow suddenly dismounted him and dropped into a mating posture, her head down against the hide-covered floor and her dripping pussy on full display, begging to be mounted, that Daniel's weak attempts at controlling himself quickly began to falter.

Daniel struggled onto his feet, staring at her freely offered body. He was harder than he could ever remember being before.

Come on, Dan. You can do this. Control yourself. Just like at the office.

He had already denied two coworkers who had wanted to fuck him. But they were only human, as was he. They didn't smell of intoxicating, blossoming fertility, nor had he been so sensitive to it. He grit his teeth, unconsciously growling as he fought against what his body wanted to do. He poured all the willpower he had into it, that moment of rebellion and resistance, the self-denial that he'd focused on for so long. And it was all for nothing. Just as the sisters had predicted.

Eventually, as much as the shame of it painted his cheeks a dark red, Daniel approached her stiffly, panting like an animal and not even noticing it. Her alluring invitation was impossible to resist; no amount of inner pep talks or attempts to calm his lust-soaked thoughts had any success. If he didn't take this opportunity – no, there was no option. No choice. The moment his mind was made up, the transformation began to take hold in earnest, his muscles swelling with sinewy, wolfish potency, and his body hair thickening into rough, protective fur. He barely even noticed it as he locked his arms around Willow's waist and hunched over her.

“That was a bit too easy, wasn't it?" Acacia growled. Not that Daniel heard anything, drunk on lust as he was, but she sounded almost disappointed, though with a tinge of anticipation as it became obvious that the sisters would get what they wanted. “These humans never have quite the control they think they do. Oh well, take your bitch, boy."

“Yes," Willow hissed, feeling Daniel's cock, human as it still was, slide along her swollen lips. She, in turn, felt almost feverishly hot against his shaft. “Take me! Fuck me like a wolf!"

He did. Nothing else mattered. Daniel licked the rest of her arousal off his lips with a broadening, increasingly wolflike tongue, and that was all it took for his hips to give that first instinctive buck. He groaned in bliss as his cock, hard as steel, sunk into Willow's fertile body. Bare, unprotected, natural, just as it should be. He wanted to breed her. He had to. She was almost suckling on him, demanding his seed, and right then, nothing in the world seemed more important than fertilizing the beautiful werewolf beneath him.

Instantly, he was thrusting at full force, his body changing to put even more power behind each nearly feral buck of his hips. Her soaked pussy massaged him, every inch of him, and his balls slapped wetly against her clit. It felt like heaven, though a much more carnal kind than the one humans usually imagined.

“Harder! Fucking ruin me!" Willow howled, rocking back into his thrusts with equal fervor. Soon she was whimpering and squealing in bliss as she savored, relished, glutted herself on Daniel's cock. He could feel himself growing harder and harder, and more sensitive at that. Each time her muscles squeezed at the base of his cock he nearly saw stars for how good it felt.

“You heard her," Acacia growled. The show was intense enough that it had melted even her foul attitude, and slowly, she approached the mating couple. “Take her. Make her yours," the older sister goaded, and Daniel let out a yelp as she gave his ass a smack. “Then, make me yours, too."

It wasn't thinking nor planned. All it was, was pure instinct. With a wolf in heat, who was another wolf – as Daniel's inner voice insisted that he was – to resist? He was only a slave to the heat. To the tight, wet squeeze of their bodies around him. That was his purpose, that was his role as a male!

The wet slapping of their hips echoed off the cave walls, and soon, in just a few more seconds, Daniel was well past the point of no return. A thousand frantic thoughts rushed through his mind. He was going to sire his first child, and as the sisters had said, it'd not even be human. What should've felt degrading, though, was an elated feeling suffused with joy and bliss. His mind was dim and dark, the world fading away as he hilted inside Willow's body and came with a choked growl from his changing mouth.

With throb after throb, he filled her. Willow howled with primal joy, announcing her climax and her breeding to all who would hear. In the distance, other howls answered her. She spasmed around Daniel's cock, squeezing him, milking him, forcing his seed deep into her, where it belonged. He bred his bitch the way any male wolf would, and then some.

Yet with that release came clarity. A brief realization of what he'd done. A glance at his body revealed that he was mostly covered with fur now, a grey-speckled black. His cock, still buried inside Willow's clutching cunt, was looking less and less human with each passing moment. Daniel fell backwards, slipping out of her and watching his sperm ooze out of the half-unconscious werewolf's swollen sex.

He had done that. The sight was beautiful, but the intense shame – from the waning human inside him, horrified that he'd coupled with an animal – and pride from the waxing wolven influence was almost too much to bear. He stood up on wobbly legs, looking at the cave entrance. Maybe if he ran right now, he could make it. It was a strange impulse, to run away from himself, in a way, and perhaps find whatever salvation he could from his seemingly inevitable fate as a member of the pack. But then, just before he could move, a strong hand grasped his arm.

“No, no, no. Remember what we said?" Acacia growled. She slammed Daniel against a wall, still far stronger than the changing male, and then pinned him down on the hides the cave floor was blanketed with. “Once you surrender, you'll be our toy. And fucking your cum into my sister certainly counts. My turn, now, stud."

She had an almost manic grin. Her long black claws raked through Daniel's rapidly sprouting chest-fur, lightly scratching the skin beneath only for the werewolf curse to immediately heal him, leaving the sensation almost erotic in a way. He thrashed beneath her, trying to cling onto the frayed ends of humanity. Yes, he'd screwed up once and been taken by his instincts, but that didn't mean he couldn't resist doing it a second time.

Or did it?

Maybe it did. His cock throbbed eagerly as he watched the older sister straddle him. Her shapely fur-covered breasts bouncing as she settled on top of him. The wonderful scent of her heat seemed even stronger now. It was like wildfire, scorching its way through his thoughts, and most of all, all his inhibitions, an iron chain tightly wrapping itself around every fiber of his being. Anything that smelled like that, he was unable to resist. He always would be, he realized.

By now his cock barely looked human at all. It was red, tapered, with a slight hint of a swelling near the base. Acacia's clawed hand guided that tip to her folds, and he throbbed again, a rope of clear precum splattering against her. It felt as if the last of his humanity left his body along with it, leaving his mind blissfully empty except for searing, all-consuming lust. He was nothing but a beast, now, Daniel realized, dimly. Thinking was hard. He could always try to recover his mind afterwards. But this would be worth any loss, any sacrifice. The intense heat of her fertile, demanding sex overwhelmed what little remained of his mind, and the first thrust was all voluntary.

“There you go," Acacia growled, her voice dripping with deep, dominant satisfaction, as an inch, maybe two of him sank into her lust-soaked cunt. “Nothing but a horny pup of a stud for us."

She was right. And Daniel didn't want to be anything more. There was nowhere that was more precious than the wolf-bitch's warm, slick embrace around him. This was his duty as a male. He snarled with pleasure as the rest of the changes swept over him, the pain of stretching muscle and bone drowned out by the pleasure of their union. Acacia rode him, first with slow and sensual movements, massaging every hard inch of the changing male with her inner muscles. The look on her face was glassy-eyed, needy, almost feral with the desires of her body, and Daniel would soon satisfy all of those needs. He didn't have a choice. Even if he wasn't pinned down with the wolf eagerly riding him, forcing him towards an inevitable climax, he had no choice. Had she dismounted him, he would've been on top of her in an instant. Nothing in the world existed but for the sweet embrace of her sex around him.

She sped up, milking him at a determined, rough pace. Every moment was ecstasy, but the true joy of a lupine mating only revealed itself to Daniel as she hilted on top of him. That swelling at the base of his cock was so sensitive that it nearly sent him into paroxysms. His back arched convulsively, and a choked howl left his lips. He wanted to – needed to – keep that swelling inside her, every instinct in his body screamed at him. In his dazed state, he didn't really think of why, only that he had to. And he would.

With each thrust, each motion of her hips, that swelling popped into her again, bigger each time it happened, until Acacia had to really wrench herself up to dislodge him. Then, realizing that the next time, they'd be tied together, she held himself there, her folds kissing his knot for a brief few seconds.

“Now breed me, stud," she growled. It was a demand that he had no power to refuse. He'd give these two sisters everything they wanted, every drop of himself, until their bellies swelled with pups, as often as they wanted him to.

He whined in lusty submission.

“Good pup," Acacia huffed, and then, she let gravity take over, letting herself sink down on his potent, twitching cock. There was a brief moment of resistance as his knot strained her lips, but then, with a mutual growl of relief, he popped inside her. Daniel's eyes rolled back and his mouth hung open, panting, unable to do anything with the overwhelming sensation of her squeezing around his knot. Anything but seed her, that was.

Just as it had with Willow, his climax was overwhelming. He only managed to shiver and tremble as it washed over him, surging through every muscle as his lupine cock jerked and throbbed inside Acacia's thirsty, clenching body, seeding her with all that remained in his swollen balls, just as she soaked his fur in the flood of her climax. It felt beautifully right. Even that persistent snarl on Acadia's face softened at the sensation of their mutual orgasm, of virile sperm filling her fertile body and filling her with what most seemed like relief.

She slumped down on top of him the moment her orgasmic contractions ended, tongue lolling out from the corner of her mouth.

“Rrr. Pretty rare to see her like that," Willow rumbled from next to them. “Properly satisfied, you know. It makes her so much less bitchy for a few months," she added with a sly smile, having recovered, at least a little, from the floaty haze of her own breeding. “But you won't be done until we're no longer in heat, pup…"

Daniel's cock twitched obediently. He remembered a faint ghost of a reason why he should worry. An anxiety now buried in deep, deep satisfaction. Maybe he'd remember if the sisters ever let him transform back into human form. Right now, he couldn't even remember ever having been a human. Indeed, when morning came after an exhausting night of constant mating, of ceaseless rutting, he gazed at himself by the water's edge in the nearby lake.

A brief, jarring sensation. At some point, he had grown a muzzle, and with it, a mouth full of razor-sharp fangs. There was an ache deep behind his lupine eyes, as if his brain protested what he was seeing. Even his scent felt unfamiliar. A dissociative sensation. The world collapsing around him, into shapes and colors, the wolf staring blankly at his reflection. Then, one of the sisters called from their den – a needy howl – and he was instantly back in reality, lust blooming in his chest and loins once more as he bounded back after only a brief dip in the lake, to cool down.

Daniel loved it all. He loved the sisters, loved never having to hide what he felt, and most all, he loved being a wolf.