"Here's your new home slut! You've even got a friend waiting for you..." the guard said as he shoved Tifa past the open door, the remark going unnoticed by Tifa as she did her best to break her fall after her shaky legs gave way beneath her.
She was still in shock, her brain numbed by the ordeal she'd gone through while other parts of her were anything but numb. The pain and... other sensations... had faded into throbbing aches, the worst of it being between her legs and on the tips of her chest. She stayed huddled on the floor, not wanting to face the men who did this to her, especially while the collar they fitted her with rendered her helpless.
The bastards were considerate enough to hose her down after they were done with her, removing the worst of their slime form her body, but Tifa could still feel some if it trickling past her gaping folds and out of her sore pucker. She was violated by what had seemed like an entire garrison, each male savoring both the feel of her body as well as her pain and humiliation. With her forehead pressed against the tile floor she felt tears well in her eyes as she remembered the taunts they'd thrown her way when her body had reacted to their abuse in the last way she'd wanted it to.
"Tifa?" the voice made her look up, her teary eyes focusing on the source of the growly but welcome voice.
"Nanaki?" she asked, her initial hope and joy at seeing the familiar red-furred form of her friend sinking once she realized that it meant he was also a prisoner here. She could see his ears were perked up in surprise, his nostrils flaring as he sniffed at her. He probably recognized me by scent she thought to herself, suspecting she looked little like the shy and caring girl Nanaki had known. 
She'd been tossed in here naked apart from the damned collar, her still damp hair hanging in lanky strands down her head. She could see bruises already rising on her breasts where her violators had delighted in squeezing and pinching her nipples, and she had no doubt similar marks would show on other places the bastards had groped and slapped.
"Th-they collared you as well?" she asked, her voice sounding hoarse after the abuse her throat had taken.
"Yes." He hissed in anger, his good eye narrowing down into a slit. "It's mortifying! Because of this thing, I can't do anything to those bastards!

Tifa: "We are prisoners of cowards that favor trickery over an honorable fight..." 
Tifa "I'm sorry that they caught you Nanaki, but I'm still glad to see you..." she said, throwing her arms around his neck and wincing as even the brush of his fur made her bruised nipples twinge. "Don't worry, our friends will come and save us. Cloud and the others..." she began, her voice breaking and her heart sinking as she imagined Cloud bursting in and seeing her used like a piece of meat by their captors. "...we just have to stay strong, okay?"
Nanaki's response was a low rumble coming from his powerful chest, the red beasts ears lowering as he laid himself down on the floor next to her. She knelt next to him, scratching the bristly mane on the top of his head and smiling faintly as the affectionate gesture seemed to cheer her friend up a little. Exhausted as she was she missed the way his nostrils were once again flaring, or the fact that with her kneeling like this her bare and well-bred folds were on display to the canine's keen eye.
She became aware just how tired she was after her ordeal, and heeding her bodies demands she curled up on the hard floor next to her friend. Despite being uncomfortable, her exhaustion got the better of her and she found herself drifting off to sleep. Her dreams quickly took her back to the cell where she'd been stripped naked while faceless males leered at her and taunted her as she was taken again and again, calling her a slut whenever her cries sounded as anything other than pained.
Then she felt something like a cool little breeze blow across her lips, taking with it all her violators and leaving her alone in a cell to puzzle over the source over the gusts of air blowing across her lips. She came awake with a start when the gentle breeze was replaced with something soft but raspy running across her tender folds.
She was back in her cell, curled up on the floor with... Nanaki! Her eyes wide, she raised herself on one elbow, spotting her friends red bulk lying behind her, his mane visible above the curve of her rump but his head somewhere lower, out of sight. And she knew exactly where when that tongue gave her lips another sweep, the movement gentle but its rough texture still making Tifa want to cry out as it was dragged over her abused slit.
"You've mated alot..." Nanaki said matter-of-factly, a surreally calm and level tone considering he was licking her most private area.
"No I... they've forced themselves on me..." Tifa replied, panting as the sensations coming from down there threatened to overwhelm her already groggy mind. Why was Nanaki doing this? And why am I not stopping this?
With her legs pressed together she knew what the canine would be seeing back there - her rosy lips would be pressed shut between her thighs, a slim line of soft feminine flesh that he was even now beginning to delve into. Tifa was surprised to hear herself squeal as that strong tongue forced its way in past her petals, its motion tender but still overwhelming to her well-used sex.
"But you're in heat..." he remarked between licks.
It didn't make any sense, and if it wasn't for the very real physical sensations, Tifa would be sure she was still dreaming. She was human, she didn't go into heat... But I can be fertile... she thought, realizing Nanaki's nose was more than sharp enough for him to sniff that out, especially considering where it was.
She struggled to get up, but after the abuse she took and the weakening effect of her collar the best she could was get on her hands and knees. Before she managed to muster the strength to straighten her back, an awful realization sank in - those men, they'd finished inside her! Not all of them, and not always between her legs but there were a lot of them. And even one was too much.
The next stroke of Nanaki's tongue made her toes curl as her new position opened her flower up and gave the canid better access. She thought of asking him what he was doing, but it occurred to her that it might be a good idea to let him keep on for a little while. He would do a better job of cleaning her than she could hope to do herself, and the less of her rapists' seed remained within her, the smaller her chances of her becoming pregnant by it.
She didn't say anything as Nanaki kept digging a little further with every stroke, biting her lip at the sensation of his raspy tongue parting her lips and rubbing against the silky walls of her sex. She blushed a little when she realized she'd arched her back a little, her pussy seeming to adjust to the rough texture of the tongue lapping at it and responding to the insistent yet gentle attention. She wasn't sure what this meant for Nanaki. He was sentient, but he did have a lot of animal instincts buried under that intellect. Many animals helped each other groom, especially among pack-mates, so she thought this might not be anything particularly intimate.
She kept thinking that even when Nanaki's tongue wandered a little higher, going along the crease of her behind to clean the other place her attackers had polluted with their seed. Even when he began to clean there she didn't think anything of it, focusing instead on keeping her mouth closed in order to muffle the embarrassing noises she was making.
It was when she felt the tongue retreat and a warm, furry weight climb her round behind and settle on her back that the last illusion that this was something other than sexual was shattered. Her heart began to pound when it dawned on her that her friend had mounted her, the strong paws suddenly gripping her slim waist telling her that he had no intent of letting her go any time soon.
"Nanaki! Wh-what are you..."
"I am in my rut..." he replied, his tone taking on a lusty growl, a sound that send a tingle running down her spine since it was now much closer to her ear.
She realized she had no idea of how... courtship worked in his species. Nanaki was older than her, but she knew his kind aged and developed more slowly. Despite his decades of life he'd be fairly young by his people's standards, a male just entering his prime. Apparently his need was such that he was willing to ignore the fact that they weren't the same species, a line Tifa was not willing to cross.
"Nanaki please you don't have to... I can use my hand on you! Rub your shaft until you c-cum..." she said, panic beginning to creep into her voice as she pleaded for her release.
"No! We are both in season. We will mate..." the canid growled, keeping his firm hold on Tifa's slim waist even as his shaft began to prod at her soft behind, the inexperienced male trusting his instinct to guide his tip to that sweet-smelling slit. "Hey Tifa have you mated with Cloud yet?"
"T-that's none of your business!" Tifa said, feeling color rise to her cheeks. This is ridiculous. His tip is inches away from my lips and I get embarrassed about a personal question?
"You haven't, have you..." Nanaki rumbled, sounding quite pleased even as he continued to blindly prod at her behind. 
Tifa allowed herself a brief hope that he would fail, that the combination of his inexperience and the difference in their anatomy would make him give up, and settle for a quick release she could give him with her hand. That hope dimmed when his next prod came quite close to the target, the hard pointed cock seeming to bruise her tender lips further as it jabbed into them.
"P-please don't... you can't..." she begged in a shaky voice, her eyes loosing focus as her attention shifted behind her, dread filling her as she awaited the next buck of Nanaki's hips.
"If I breed you and put my pups in you, you will belong to me as my mate or bitch if you struggle. After this I'll never let Cloud have you..." her growled lustily from above her, and a new fear griped the panicking female. She'd never considered the possibility. Surely they were too different for his seed to take? But he'd smelled the fact that she was fertile after only a few sniffs, as easily as he would have with a female of his own kind.
A scream interrupted her thoughts and Tifa was half-surprised to realize it was her own. She'd cried out in pain and shock as her still sore folds were forced to part around a member much larger than anything her captors had shoved in there. A triumphant growl joined her cry as Nanaki adjusted her hold on her, shuffling a little closer as he fed several more inches of his steely red shaft into her abused sex.
The weight of him on her back was too much for her to throw off so she tried to wriggle out of his grip, to somehow pull herself off the cock filling her so much that it scared her. When it seemed like she might slip from the tight grip the canine had on her waist, Nanaki closed his jaws on the thick hair spilling over her back, yanking on it hard enough to raise her head and arch her back.
"Don't try to run away bitch!" he growled, but Tifa knew she couldn't now.
"Wh-why are you doing this?" she said, blinking away tears.
"We are both in season. We need this. You want to mate as much as I do..."
"I don't... please, I..." she begged, but somehow couldn't bring herself to speak.
Her splayed lips felt like they were on fire, stretched painfully around the hot canine rod forcing its way past them and into her sensitive sex. The heat of him! The thought took root in her mind as Nanaki's shaft began to warm her insides, the bestial member feeling hotter and much bigger that the shafts of the guards that had first violated her. Fear rose within her breast with every little bit of the canine cock she was forced to take as Tifa wondered if her body could even accept the warm length being fed into her, inch by thick inch.
Nanaki gave one testing thrust and Tifa wished the noise she'd made had sounded more pained. Maybe it would have snapped her friend out of his rut if she'd sounded like he was hurting her. Unfortunately there was something in her voice she suspected would only encourage a male, of any species, to keep thrusting. She could feel something oozing from around her splayed lips, guessing it to be the last of the seed the guards had pumped into her. The relief she felt at the vile gunk being pumped out of her was short lived. She'd seen the sack dangling under Nanaki's tail, and dreaded the thought of those heavy orbs emptying themselves inside her.
The canid began to pump away at her rear, his thrusts vigorous but she suspected it was only a taste of what he was capable of. She wasn't sure if she should be grateful or mortified that her sex was adjusting so quickly to the bestial intruder, the pistoning movements of the red length made easier by the fluids it was leaking inside her. Tifa found herself trying to focus on the pain, afraid that if she appeared to enjoy the bestial rutting Nanaki would only be encouraged to mount her again and again for as long as they shared a cell. Cloud, please hurry! If you don't.... I'm going to become a slave... she thought, remembering Nanaki's intent to keep her as his mate if his seed took.
In the meantime she tried to do her best to endure Nanaki's rutting. She found herself spreading her legs a little and arching her back, this new position making the penetration a little smoother. She blushed when she realized how it would look to the canid, or anyone watching them - a submissive and receptive posture, a female getting into an optimal position for her mate to breed her. She had to keep her arms braced so that the occasional wild thrust wouldn't knock her over, her ripe young breasts swinging free beneath her chest with every hump against her smooth rear.
Submissive or not, Nanaki found it necessary to remind her who was in charge. A painful yank on her thick hair pulled her head up higher as a sob escaped her throat. The paws gripping her waist tightened further, even though she'd long given up hope of getting free. She felt the dew-claws poking into her and even though she couldn't turn around to look at it, she knew her white skin would be showing red marks by now, proof that Nanaki had mounted her like a proper bitch in heat.
Her voice was shaking as much as her teats were, a sound too much like a moan for her liking leaving her throat, interrupted now and again by an occasional gasp or squeal as Nanaki found a new sensitive spot inside her. Maybe it would have been easier if he'd been mating her like a beast - humping away in order to finish inside a fertile female as soon as possible and watch her belly swell with his young. He seemed to want her to make these noises, almost as if he enjoyed the idea of making her like this.
And even though he wasn't taunting her she still felt a burning shame at the thought of enjoying this. This wasn't how it was supposed to happen! Cloud was supposed to be my... she thought even as the bestial cock pistoned between her once again soaked lips.
Please just... just cum... she thought, shame washing over her as she realized what she was hoping for. But it was going to happen anyway. Any hope that Nanaki might take pity on her was long gone, and Tifa knew she'd stay on her knees until he'd left every drop in her sore sex. She just wanted it to be over with, and soon. Her captors had managed to force her body to respond several times during her rape and despite the pain and fear she felt from this savage rutting she felt the same feelings mounting. She sobbed even as she moaned, knowing that if she came around Nanaki's shaft, her fate would be sealed - he would see her as an eager female, a bitch in heat, and wouldn't give her a moment's rest till she was pregnant.
A fresh sting coaxed a squeal from her as something briefly stretched her lips further than they already were. She felt the thing slip out of her and there was another jab of pain as it was pushed inside her once again. Looking down past her hanging breasts she saw the angry red length violating her, the shaft now sporting a bulbous swelling at the base that looked and felt like it was getting bigger by the second.
If Nanaki noticed it he didn't show it, his rutting still mercilessly fast and forceful enough to both push the bulge into her and yank it out whenever he withdrew. Her moan had turned into a mewling wail and Tifa wasn't sure how much more of this she could take. 
"W-wha..." she tried to ask as she realized Nanaki was now stuck inside her.
"It's my knot. When it swells up inside it will tie us together, making sure you take every drop of my seed like a good bitch..." Nanaki growled out, just the thought of that triumph seeming to make him more eager.
A fresh wave of panic washed over Tifa as his words sunk in, and despite knowing it was hopeless she once again tried to get away. Her fingers futilely scrambled for purchase on the smooth tiles as she sought some sort of leverage, some way to escape the mating grip Nanaki had on her. The male seemed content to let her struggle for a few seconds before he quickly reminding her who was in charge. A sharp tug on her hair and his powerful forelegs pulling her hips back to meet his thrust drove the last vestige of hope from Tifa even as the knot was once again driven past her bruised petals.
She allowed herself to hope that this was it, that Nanaki was stuck and her breeding was about to begin, but a savage tug that yanked the bulb out proved her wrong and she found herself squealing out in pain as the massive knot left her. She could tell the... thing was growing, the ball of flesh now big enough to batter at her sex with every thrust.
"Nanaki, please... you can't... I can't..." she stammered out between pained sobs but before she could finish she screamed out in pain as Nanaki pulled her hips back to meet a particularly savage thrust.
Her loins felt like they were on fire, despite the fact Nanaki's thrusting had stopped as he let out a low growl, obviously savoring the sensation of her too-tight passage wrapped around his monstrous member. Through the pain, Tifa could feel his heartbeat within her sex, and the knot growing a little bigger with every pulse of the organ filling every inch of her. She began to whimper as she felt Nanaki move once again, fearing the knot would once again be yanked painfully out, but Nanaki's prediction proved true. He was stuck within her, his movements serving only to tug and shift the throbbing shaft.
He didn't seem worried, settling for very shallow and very rapid thrusts against her rear, his humping only serving to move the swollen cock within her. Shame mixed with pain for Tifa as the growing bulb began to press against an area just inside her sex she knew all too well - a special little spot that her nimble fingers had learned to find by now, one that she would stroke when she was alone in bed and thinking about Cloud.
The hard, hot canine flesh rubbing that spot now wasn't nearly as loving as her finger, but her body could do little but respond. She tried to hold off what she felt was coming, tried to save herself the shame of climaxing form this forced breeding Nanaki was subjecting her to. She bit her lip as she felt every throb of the red cock within her, fighting instinct with every last shred of strength she had. She felt like she was holding her own against the tide of lust rising within her, but all that changed when Nanaki's movements stopped, drawing Tifa's attention to what was happening inside her.
"Nnnnn... nnnnnn..." she tried to get out a last 'no' but all that came out her mouth where nasal whines as she felt the cock lodged within her twitch, the first jet of Nanaki's seed shooting from his tip with enough force for her to feel it spraying against a barrier deep within her, a barrier she knew wouldn't hold.
There was nothing to do but concede defeat, and for Tifa that meant surrendering the fight against her instincts. She bit her lip to muffle the mewling noises she knew she made every time she came, although she doubted Nanaki's keen ears would be fooled. And even if they had been, there was no way to hide the way her body welcomed the continuing flood of canine spunk, muscles twitching along her willowy form as her sex pulsed lovingly around the bestial member invading it.
When she came down form her climax, Tifa was stunned to find that Nanaki's wasn't even tapering off. The men who'd taken her earlier had emptied themselves quickly enough, some of them not even waiting until they were done before pulling out of her and sending streaks of their seed shooting across her pale skin. She remembered the disgusting sensation of her sex drooling their slimy loads as they used her, especially after her lips had become too loose to wrap around the invading shafts.
But not a drop was leaving her now, the juices Nanaki had pumped out of her earlier cooling almost pleasantly on her hot and swollen lips. And he was shooting more into her than any of the human males had, possibly more than all of them combined! She felt a strange sensation of a pressure building within her, an alien and uncomfortable feeling until something inside her seemed to give way. Her eyes shot open, staring at nothing as she felt the liquid heat enter deeper within her, someplace in her body where nothing had gone in before.
She began to pant, realizing she'd been holding her breath for some time. But it was over now. Nanaki's seed was surging into her womb, and more was still being pumped into her. If she could become pregnant with him her fate would be sealed just as her sex was, enabling the canine on her back to flood her womb in a way no human could ever hope to. She folded her arms beneath her and rested her head on them, wincing a little as her bruised breasts touched to cold tile of the floor. Her rear remained raised, stuck firmly to Nanaki's crotch for... well, Tifa had no idea how long.
It had certainly taken a while. He'd stopped spraying his seed into her at some point, but it was still some time after that until she felt a sharp pain as he began to tug himself out. Either she had adjusted to the monstrous bulge or he had shrunk at least a little, but it still felt too big for the canine to safely pull out. Another tug made her realize he was going to do it anyway, and she found one shaky hand flying to her sex almost on instinct.
She was shocked when her finger's brushed against her sore lips, feeling the way they bulged out and the hard knot of canine flesh locked away behind them. Even touching herself back there hurt, but she forced herself to pry her petals open, stretching herself just in time for Nanaki's next yank. She cried out as the massive organ that now seemed a part of her shifted, the swollen red ball stretching her until she was sure she would tear.
She whimpered as the mammoth bulge finally slipped out, the rest of Nanaki's still hard shaft sliding out of her easily as the male dismounted. Once the tip was out her hand was drenched in warm watery spunk, but Tifa knew it was only the overflow. Most of it was still sloshing around in her fertile womb, sealing her fate. 
Nanaki had turned almost a full circle around her, and her hand had flown to her mouth at the sight of his cock, a monstrous red length with a knot so big she couldn't believe it had been inside her. She knew the thing had shrunk considerably by the time she was able to pull off and tried not to imagine how big it had gotten while within her.
"Clean me..." came the low deep growl, making Tifa look up at the slick shaft now bobbing an inch or so from her face, close enough for her to feel the hat coming off the still hard organ.
"I... I'll get some water..." she said in a shaky whimpering tone, remembering the bowl she'd spotted in the corner.
"Not wash! Clean me..." Nanaki growled, blocking her path and it dawned on Tifa what he meant.
She opened her mouth to protest, to plead with him to spare her this humiliation, but she knew it would do no good. Nanaki had mounted her, tied with her and left his seed in her fertile womb, a display of absolute dominance over what he now viewed as his mate... his bitch. He would not react kindly if she tried to challenge him now.
Tifa's nose wrinkled at the scent of his cum and the powerful musk of a male in his rut, her tongue tentatively extending until it was pressed against the red length. The taste of him was bitter but she forced herself to lick and swallow, running her tongue along the twitching length. She realized she was also tasting herself as she cleaned him, a thought that brought her mind to her own sex.
She could feel her lips gaping as it drooled Nanaki's load, the thin canine sperm cooling as it ran in rivulets down her thighs and dripped from her mound. A low growl brought her attention back to her work, and she guessed what Nanaki expected of her next. Closing her eyes tight she parted her lips and slid them over the tip, making sure to keep her teeth out of the way as she pushed her mouth further and further along the glistening length.
She'd stopped about half-way when the tip was past her tongue, but that apparently wasn't enough for Nanaki above her. One buck drove his shaft into Tifa's throat, and she was forced to try and not to choke on the invading length as the shrinking knot bumped against her lips.
She wasn't sure how long she stayed like that - on all fours with her violated slit dripping canine spunk even as she suckled dutifully around the length throbbing in her mouth. The taste of Nanaki's seed lingered on her tongue, but Tifa felt more disgusted with the ease with which she was reduced to this - an obedient breeding bitch for Nanaki, licking and sucking him clean as the mess he'd made inside her dripped from her parted folds.
It seemed like forever, but the red shaft she was nursing finally slipped back into its furry sheath, leaving Tifa panting for breath. Nanaki circled around her and she whimpered when she felt his breath over her sore slit. She cried out as his rough tongue rasped over her abused petals but didn't protest. His tongue was almost painful after the battering he'd given her sex, but it was still preferable to having her loins covered in his spunk. She winced with every swipe, noting that this time Nanaki wasn't delving past her lips to clean everything up.
When he was done she could still feel a little bit oozing out of her, but she was too exhausted to care. She winced as she carefully curled up on the floor, her thighs pressing together and sealing the reminder of Nanaki's load within her. As sleep took her, she was aware of a furry bulk curling up beside her, grateful at least for the warmth of another body next to her own.
She woke some time later after disturbing dreams to find reality wasn't much better. Nanaki's tongue was once again buried in her slit, probing deeply past her sore folds with the same eagerness he'd shown before. She tried to plead with him to give her some time to recover, but after a sharp nip on her pale rump she quickly got into the position she knew Nanaki wanted her in.
He waste no time mounting her, and this time it took only a few blind jabs for him to find her honeypot. He'd taken her with the same bestial urgency he'd displayed before, her body shaking with the force of his thrusts as wet slapping sounds rang out in the cell. The slot under their door opened some time after he'd finished inside her and two bowls of food were pushed through, the guard chuckling as he told Tifa to smile for the camera.
She suspected they were under surveillance and tried not to think about just what her captors had seen as she devoured the bland but filling food she'd been served. Days went past and she'd settled into a routine - eating, sleeping and breeding. The only change was that her oral ministrations had gotten good enough that occasionally she could persuade Nanaki into letting her use her mouth, giving her well-fucked quim some time to rest. It didn't prove too much of an improvement since Nanaki proved just as forceful with her mouth as he'd been with her slit.
She wasn't sure how much time had passed, her days becoming a routine punctuated by the sexual demands of her cellmate and the taunts of the guards when they came to bring food and water. She'd cringed at first at their comments that the cell smelled of wet bitch, or asking whether she wasn't getting enough to eat or if she liked the taste of cum. When she failed to answer that one she noticed her next meal had a suspicious white mess toping it, but she'd been too hungry to care.
She'd woken one day (or night, for all she knew) to the familiar sensation of a raspy tongue exploring her slit. She groggily got up so that her rear was in the air, her head still resting on her arms as she clung to the idea she might manage to get some sleep. The tongue swept from her mound and between her cheeks, but by now there was no part of her body that he hasn't licked at some point or another. It felt almost nice, the sensation of that warm, broad tongue sliding over her private parts and she almost whished it could have lasted longer before she felt Nanaki climbing over her, his forepaws fastening around her waist as he began to prod at her behind.
She readied herself for another rutting, having lost count of how many times he'd already mounted her. It seemed to be following the familiar pattern, but Tifa realized she might not have raised her rear high enough when after a few jabs that were a tad too high from her slit one thrust poked her pucker. Her ring had been relaxed after the tonguing she'd gotten and she felt the tip sink in just a little past it before being pulled away, a sensation that had been alarming enough to rouse her from her half-slumber.
"Ah! W-wait Nanaki, you're..." she stammered, quickly reaching back with one hand in the hopes of guiding the tip of his shaft past her lips.
That hope was gone as the male's shaft once again hit the same mark, this time with enough force to spear her little rosebud, forcing it to stretch around the steely red cock. Her mouth hung open but no sound came out, stars dancing in front of her eyes as she felt an entirely new sort of pain. The humiliation and discomfort of Nanaki's ruttings had become routine, but as a few more inches slid between her perky cheeks, Tifa once again felt both the dread and agony she'd felt when he'd first forced himself inside her.
"Nanaki! Y -Aaaahh!- you can't... that's not the..." she tried to speak but screams interrupted her attempts every time the male mounting her had pushed further in.
"It doesn't matter. You're already carrying my pups, I can smell it on you..." he growled lustily, obviously enjoying the tight new hole he'd discovered.
As his words sunk in Tifa's last shred of hope sunk with them. So it was possible for her to conceive with Nanaki, and if it was it was no surprise she had after the many time's he'd left her womb flooded with his seed. She sobbed as she realized the male on her back had truly claimed her as no male had so far. He had taken her every way he could and her belly would soon begin to swell with his young.
"Any son's you birth will be free to mount you after I am done..." he spoke from above her even as he worked to force the last few inches of his cock into her painfully full ass. "... and our daughters will join you as my mates." Afterall I am an endangered species so I need you to hurry up and give birth to my pups!
As she felt him give one last shove, strong enough to push his still slim knot into her and leave his sheath pressed against her pucker, Tifa wondered if this was to be her fate - a prisoner and a brood-bitch for Nanaki and their offspring. Or would they get rescued before she gave birth? Would I even want Cloud to see me like this?
She had to admit that bestial as it was she'd learned to take pleasure from her matings with Nanaki, despite the fact that his rutting would always hurt even when she was enjoying it, and would leave her sore and aching for hours afterwards. But there was nothing but pain as the canid began to hump her rump, shuffling closer and tightening his grip on her waist as he began to pummel her poor pucker.
The pistoning of Nanaki's steely shaft was agony at first, but after Tifa managed to relax and the bestial member began to leak inside her it became easier to take, albeit still painful. She could feel that heavy sack that had emptied itself into her so many times slapping against her empty slit, the sounds of it hitting her lips soon drowned out by the lewd slurping coming from just above it.
Her chest was still on the ground, her breasts pressed against the floor as her whole body shook, her snowy cheeks rippling with every thrust of Nanaki's powerful hips against her soft rump. Her head was raised, staring blankly ahead until she remembered the cameras and she lowered her face, at the thought of her captors watching this newest violation.
Thoughts of anything other than the canine on her back were soon driven out by the pistoning of that red cock, and the now insistent bumping of his knot against her pucker. She thought briefly of pleading and begging for him not to push it in and tie with her ass, but she knew it was no use. She'd learned he needed his knot squeezed in order to cum, and when servicing him with her mouth she would always do it by hand. She couldn't reach that for from this position, so she knew she'd have no choice but to get knotted by Nanaki.
Swallowing the last vestige of dignity she had she lowered her forehead to the tiled floor as she reached back with her arms. His knot was out of reach, but her rump thankfully wasn't. Without that bulb in her, her pucker was drooling the juices he was squirting into her and her cheeks were already slick, making it all the harder for her to do what she knew she had to. Her finger's dug into her pliant flesh as she gripped each round globe firmly before pulling them apart, just in time for Nanaki's next thrust.
Even though the knot was still mercifully small, the sensation of the hard bulge going where it was never meant to was still painful, but not nearly as much as the feeling of the throbbing bulb swelling as Nanaki continued to hump. Tifa was sure he would split her open until she felt his sack leave her lips as it pulled up against his body, followed later by the first pulse of canine seed.
Feeling relieved that the cock in her ass wouldn't be getting any bigger she relaxed as much as she could as jet after hot jet was pumped into her tightly sealed rear. It seemed like an eternity until the spurts finally stopped and she felt the first tug, signaling that Nanaki was about to dismount. She forced herself to relax as best as she could as she once again gripped her cheeks, prying her ass open so that bulbous knot could slip out.
It was slow going even with her efforts, the pain greater than even the first time he'd pulled out of her slit. Eventually she could feel the widest part stretching her and a second later one yank popped the whole thing out of her. Panting from exertion, she was dimly aware of the rest of the canine shaft sliding out of her abused rear before she blacked out.
*******
As she had predicted months ago, rescue did eventually come. Tifa was aware of strange sounds coming from beyond the door of her cell but only realized they were sounds of fighting when the door was unlocked and opened wide. In it stood Cloud, as she'd dreamed so often, but unlike her dreams she didn't rush to embrace him, nor could she.
Would he even want me to?
The thought entered her mind as she realized what his eyes saw. Nanaki didn't seem to be in a rush to get off her, his crotch pressed against her face and his shaft half-way down her throat as his knot bumped her lips with every shallow hump. 
Her body, she knew, would have changed as well from when Cloud last saw her. Her pale skin was crisscrossed with claw marks, some faded and some still fresh, evidence of a long captivity spent under Nanaki. She was hosed down every now and again but she imagined the scent of his fur and his seed must still be clinging to her since she never remained unsoiled for long.
But it would be her swollen belly that caught his eyes, a firm white bump getting larger every day as Nanaki's pups grew within her, her breasts growing along with them. They swayed under her even now, full and heavy with nipples darkening as her milk came in, the ripe globes obviously swelling with enough to nurse a small litter.
She was glad to see him, but she knew their rescue would change little. She'd long given up any hope of a relationship with Cloud. She was Nanaki's mate now, a fact she was reminded off whenever the pups she was carrying shifted within her as she slept. She was sure the stunned male standing in the doorway understood that as well. How could he not, when the only sounds breaking the silence were her gulps as she swallowed the seed being pumped down her throat and Nanaki grinning?


To Be Continued......??????