FSE

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Waves breaking on the deadly crags of a sea cave _should_have been a beautiful thing to look at, but Ty and Emily didn't have the time or opportunity to appreciate the spray of ocean mist as they drew closer to the end of their journey.

If they weren't alone on the ship, they would have let someone else steer while they took in the majesty of the spray casting into the air and twinkling in the sunlight.

"I see a safe spot to bring the front of the ship to rest!" Ty called out, as he wrestled with the navigating oar and tried to turn the starboard bow toward the only flat surface he could see. "Think you can get us there, Emily?"

Looking back at her fellow pirate with a grin, Emily took the ropes from the side of the sail and moved with the confidence of a practiced sailor. "Gonna be easy as pie!" she assured him, as she angled the sail to pick up the heavy winds.

They were just close enough to the mouth of the cave that the wind was starting to tunnel in toward the landing, prompting Emily to narrow the birth of the sail. As they were, they risked crashing into the rocks, but Ty was already grabbing the anchor and looking for a safe spot to toss it into the waves.

This wasn't their first time dropping anchor in a dangerous location, but they hoped it would finally be the time that yielded them the treasure they'd been hunting for the better part of a year.

"Think I've got a spot...y-yep! There it is!" Ty tugged hard at the rope, but the anchor was fully entrenched in the rocks below. He wanted to bring the speed of the boat down a bit before actually catching anything with the weight, but they were in choppy, unpredictable waters.

Lesser pirates than they were had been churned into nothingness on the very rocks that they came to admire, and though it was an uneven landing, the front of the boat withstood the impact as it slowly bounced against the edge of the cave, on the only smooth rocks that were available to cross.

"If you jerked the boat to a stop any harder, you would have thrown me right over the edge," Emily groaned, having caught herself on the mast of the boat just before the vessel came to a complete, abrupt pause. "Maybe next time we slow down a little before we reach the mouth of the cave?"

"Maybe next time we sail on a day with a little less headwind," Ty suggested, albeit facetiously. "Though, if we're lucky, we won't have to sail anywhere for a long time after this."

The pair of sibling pirates were far past tired of spending their days on the open ocean: not for the lack of thrills or a hatred of the water, but for the number of ships that they had to plunder just to pay for food for the week. They'd grown tired of the risks, and cargo ships were arming themselves with greater armaments by the day, making the privateering business one too dangerous for them to stay in.

Their only chance at an escape from that life was scoring the biggest treasure they'd ever heard of, and at the end of a months-long voyage, they'd finally reached the end of an old treasure map, at the mouth of a cave that only existed in rumors, before.

Whoever left the rumored treasure there had done so for good reason, and surely, they didn't expect anyone else to ever come upon it; the kind of determination that Ty and Emily shared was required just to make it to the cave.

"Nice and cool here in the shade," Emily murmured, pleased with a break from the sun beating down on her fur as she hopped inside. "You've got a torch with you, right? It's pitch black in there."

The mouth of the cave was wide enough that they could have sailed a full cargo ship through the entrance, leaving their comparatively tiny boat looking too small to be the tongue of the cave entrance.

Scrambling out of the boat as it was tossed around by the lapping waves, Ty grabbed a torch just as he passed over the edge of the boat, along with a flint to light it. "Yeah, this should do it. According to the map, the treasure is just out of the reach of daylight...but that cave is massive."

To climb up to the roof of the cave would have taken tools and expertise that the pirates simply didn't have, but the treasure was rumored to be sitting in plain sight; so deadly was the journey to reach it that there was no need for added security.

With all of the failed attempts to retrieve it and rumors of how horrible the journey was, the siblings didn't have any competition waiting for them, and there was no further traps, as they lit their torch and moved past the entrance.

The only thing they had to contend with was the spray of ocean water, as it tried to extinguish the torch before they escaped its reach.

"We're probably the first people to set foot here in the last century," Emily's breathless voice echoed across the empty reaches of the cave, spreading the sound of her disbelief. "I can't even glean the scents of anyone who'd been here before...all I can smell is brine and water."

"This place gets sprayed by so much ocean water that it probably washed away the scents of the first pirates a long time ago," Ty suggested. "Honestly, our scents will probably be gone by tomorrow, as long as we are."

"Not planning on staying the night?"

"We've got enough supplies for a couple of days out here, and it might take that long just to get back to a port, depending on the winds we have to contend with. We should probably just grab the treasure, make our way to the exit and find someone to purchase it."

"We don't even know what it is, Ty. How do we know that we'll have a buyer for this thing so easily?"

The mystique surrounding the treasure was so great that the pair didn't even know exactly what they were looking for, but they'd seen nothing in the cave thus far, save for the occasional barnacle tossed in from the waves, or the stalagmites poking up from the floor of the uneven rock formations.

When it presented itself, they would know it, but they were both curious about the shape it would take.

"Any treasure that's this hard to find has to have a history to it, and it's gotta be made of something precious. If nothing else, we could just sell it for market value if it's a stone or a metal..."

Emily rolled her eyes. "A great use of our time, really. Pawning off the world's greatest treasure for a few lumps of gold."

"Better than sailing around broke all the time and having to hold up innocent passengers on trade ships, isn't it?"

At first, Ty was judging his sister for her lack of immediate reply, but he quickly discovered the source of her pause.

Sitting on the only truly flat stone in the cave was a brilliant, glowing sculpture of pure sapphire. Carved from the brilliant, blue stone was the shape of a centaur, complete with details that most people would have forgone on such a relatively small carving; even the genital shape had been etched into the valuable treasure.

From a distance, they couldn't be sure how large it was, but as they approached, the flame danced on the surface of the sapphire and illuminated the back end of the cave with a flickering light of heated aqua. It was such a sight that even the dull, tattered garb the pirates wore was given a new sense of vitality.

Getting any closer felt as though they were trampling on the legacy of the voyager who first left the statue there, and there was no plaque in front of it, or inscription detailing why it had been left there in the first place. The pedestal was no mistake, acting as a center point of the cave, but a quick flash of the torch revealed very little behind it.

"It's not a decoy," Ty theorized. "This has to be the treasure, and judging by the size of it...it's probably fifty or sixty pounds of pure, etched sapphire. This thing would be worth a fortune to the right buyer."

Emily nodded, but her gaze was uneasy. "Just because the stone itself is valuable doesn't mean that we can take this thing without repercussions, Ty. We need to think this over..."

"No one else has been here for centuries. This place is almost impossible to find with a map, and this statue has been sitting in place for so long that life has sprung around the base of it. The only thing we have to worry about is someone else knowing specifically what treasure this is, so we don't end up with a target on our backs."

"It is impressive," Emily admitted. "Beautiful to look at, kinda mesmerizing...but I can't help feeling like we need to leave it here."

"It's entirely natural to be intimidated by a harmless statue, Emily. I guess it does look a little frightening."

Their playful, back-and-forth jabs were just part of their sibling relationship, but this time, Emily made it clear that she wasn't playing around with a single glare. "Are you seriously trying to goad me into stealing something that I'm not comfortable taking?"

"No," Ty mumbled. "I'm trying to goad you into standing aside while I pick that thing up and carry it back to the ship, so we can go be rich somewhere that has food and clean drinking water."

Emily knew that her brother was going to go for the statue the moment that they both first beheld it, but she didn't think she'd have to stop him from making a terrible mistake.

Listening more to the fears in the pit of her stomach than her brother's best intentions, she stepped forward and gripped the carved idol at the same time that he did, but neither of them could lift it with a single paw.

"G...good," she grunted, struggling to budge it from the pedestal. "It's too heavy f-for us to carry back to the ship, anyway!"

"It wouldn't be if you'd actually help me move it," Ty argued. "Are you seriously backing out after we came all this way?!"

On all their journeys together, Emily never once doubted her gut, and so far, it had brought her to this place, but now that she'd seen what they were actually after, something inside was telling her that they needed to leave the treasure where it was, frustrating as that might have been.

It took only their meager conflict to move the heavy statue from the pedestal, but in the brief moment where the sapphire sculpture was held in their paws, a brilliant flash of encompassing blue filled the cave.

Even after the light dissipated, an aura remained around the pair of pirates. Emily was the first to notice it, as Ty winced his eyes...but she couldn't believe the words that left her mouth.

"There was a greater treasure in this cave all along, wasn't there?"

"No, I'm pretty sure that this is the only treasure lying around here," Ty muttered, as he rubbed the flash spots out of his eyes. "And I can't move it on my own, so if you don't mind helping me grab it again..."

A low-cut skirt of leather and a corset top were all that Emily wore on the open ocean, forgoing the excess weight and fluff of a blouse or leggings.

By the virtue of sharing such a small boat with him in the first place, Emily wasn't able to avoid seeing Ty in an intimate and vulnerable moment now and then, but they did their best to respect each other's privacy the best that they could.

Such respect made it painfully obvious when Emily's stare marched down to the bulge of her brother's crotch against his own tattered pants.

"I'd be delighted to grab that for you."

The natural heat cycle of the vixen was something that they'd dealt with on the open ocean before, and generally, Ty and Emily were able to ignore the symptoms of it while their ship was docked somewhere, or at least give the vixen the space she needed to mitigate the overwhelming lust that came with it.

Just touching the statue sprung her into estrus, and this time, she was doing nothing to resist it as Ty grabbed the sapphire, and she grabbed his cock, right through the front of his pants.

"Em, h...have you completely lost your mind?" Ty asked, his voice rattled by the slow, repetitious squeezes around the base of his sheathe. "What's gotten into you?"

He would have focused more on her touch, if not for the strange, seemingly random pain that he felt near the back of his hips. He tried to step away from his entranced sister, but his legs felt heavy , and his balance was wobbly as he tried to stumble back.

He didn't trust her enough to take his eyes off of her, but he needed to see what was wrong with him...and the rapid growth of his hips and backside as they stretched away from the rest of his body qualified as much more than a distraction.

"Not enough of this," she claimed, ignoring the panic in Ty's stare as he continued gesturing at his expanding body. "But you can help me remedy that, can't you? You're the one who pointed out that no one's been here in centuries...that sounds like enough privacy to me."

The morality of pirates was never of the highest regard, but jumping over the incestuous line with such a nonchalant attitude was beyond Ty's ability. He tried to move away from her grip again, but as he tripped over his own legs, something more bolted out of his backside, keeping him from landing flat on his spine.

New toes tickled against the cool surface of the rocks as they burst into existence, and pawpads immediately began to form, mimicking the tired, calloused ones that were already present on the rest of his appendages. It was a shocking revelation, but one that made perfect sense to him as he looked past his stripping sister and to the shape of the statue itself.

He was taking on a tauric form in rapid fashion, and rather than the freed sight of Emily's breasts as she untied her corset, he focused on the fact that her already wide, full hips were getting heavier by the moment; she was falling into the same trap, thanks to the curse surrounding the statue.

"Emily, you need to get a grip rig-

"Feels like I've already got a pretty good one."

"That is not what I meant!" he chimed back in, caught between the growing pleasure of her touch and the mounting frustration of their unstoppable change. "You know how much I hate admitting that you're right, but...w-we never should have touched the statue! We need to get out of this cave before things get any worse!"

Flexible leather finally reached its limit and ruptured around Ty's new limbs, leaving tatters of worn, brown material on the floor of the cave and exposing his growing cock to the welcoming clutch of his sister's paw. She could already tell he was enjoying her touch, even if there was a hint of regret behind his voice.

Now, she had visible evidence of the same, as his vulpine cock slowly pushed free of the warmth of his sheath.

"Far as I can tell, things are only going to get better from here, Ty. Why don't we just do what we've been doing best and enjoy the journey?"

"Fucking your brother is not a journey, Em..."

She was less concerned with her own transformation, but that wasn't stopping the change from filling out Emily's body and pushing her flesh right through the old, tattered skirt. The leather of it scarcely reached the middle of her thigh to begin with, but as her own set of extra limbs slowly grew out from the expansion of her new flesh, any sense of modesty that she once had was literally torn away; the entirety of her bodice was exposed to her brother, and the enchanted heat imparted on her by the statue took away her ability to listen to reason.

Such a powerful scent was already drifting from the petals of her womanhood, but as it swirled with the incoming mist and ocean breeze, Ty found himself drifting further and further into it, even when he knew that his actions would be wrong if he gave in.

He was only mortal, however...and being exposed to such powerful agencies was something that he couldn't resist forever.

"Sex is as much of a journey as you make it, Ty. It doesn't matter who you have it with."

"It absolutely does matter who you have it with!" he argued, but his resistance continued to erode, like the rocks that gave way to the waves across the ages. His insistence to move away from her continued to fade, until he was standing still and watching her skillful, delicate paw work from the base of his stiffened cock all the way to the tapered, vulpine tip...milking precum right out of him. "It...it s-shouldn't be with me, Em!"

Giggling and leaning forth slowly on her new limbs, Emily did her best to adjust to her new center of gravity, knowing it just well enough to reach the tip of her brother's member with a fresh, warm kiss.

"Is that right, Ty? I don't think I've ever seen anyone this hard...especially when they keep claiming that they don't wanna fuck me."

Her tongue took only one pass at the underside of his length, cleaning the precum she'd milked from him, before she swirled it around the tip, wanting to make sure he was nice and wet for what came next.

He still didn't have the gumption to take control of the moment, but he couldn't resist her heat anymore than she could, at that point.

"You can't just do it, can you?" he asked, on the other side of a breathless moan. "You have to tease me about it every step of the way?"

"You're about to fuck your own sister," she reminded him. "You're damn right I'm gonna tease you about it..."

Neither one of them had adapted to their extra set of legs by that point, but Emily was more willing to try them out: she didn't hesitate to lunge forward at her brother, and in his surprise, he didn't have a chance to stop her before she'd nearly tackled him to the floor of the cave.

Laying on his back was nigh impossible, now that his hind legs had been extended to such a point...but that didn't stop Emily from resting atop him the best that she could, seeing that she could still find an angle to guide his cock inside of her. He felt just how wet Emily was as her soft, eager petals brushed across his hip and left a small, messy trail of moisture in their wake, but that only fueled his arousal in the moments before their union.

The first touch of her heated, delicate folds on the tip of his pulsing cock was what broke the last of his resistance; the months at sea without another woman for miles around were already wearing on him, but he never thought he'd actually give in to the fantasy that crept up in the back of his mind from time to time.

He wondered how she'd feel about it when the effects of the statue wore off, if they ever would.

"Sorry if it's a b-bit of a weird angle," she tried to apologize, but there was little sincerity in her voice as her new, extra limbs mingled with his own. She expected him to kick back and put up a fight, but she was delighted to find that along with his mental resistance, his physical resistance was completely exhausted. "I know it'll do just fine...especially when you're s-so fucking big, Ty..."

Hearing her talk about him that way should have made him shudder with disgust, but instead, he was trembling with delight as their hind legs stayed side by side, and in the middle of it all, her petals teased around the tip of his length time and time again in a slow, uneven roll, until the perfect angle revealed itself.

Ty slipped inside of his sister with ease, and only then did he come to appreciate the true depth of the curse they'd been afflicted with.

"How long..."

His voice trailed off, but as much as Emily needed to feel his member inside of her, she was dying to know what he would have said. Her gaze pleaded with him, as she brushed the golden-blonde bangs from her view.

"How long have I been denying myself this...this kind of pleasure?"

Whether it was the enchantment of the statue, or the natural lust that came with such a lengthy dry spell, Emily was quick to echo the sentiment. " Far too long," she told him, all while finding a smooth rhythm to bounce her bodice against his own in a slow, rolling thrust. "Statue or not, you s-should have been fucking me months ago, Ty!"

Morbid curiosity would force him to ask if she meant that when they escaped the reaches of the statue, but they'd never get away from it without satiating their needs, first.

Even if he knew that it was wrong somewhere in the back of his mind, the front was nothing but instinct, telling him to scrape his hind legs against the floor of the cave to find purchase so he could thrust back against the vixen with equal passion and drive.

"Something that feels t-this good...is...w-worth waiting for," he tried to explain, but every word became a battle as pleasure continued to mount within his transformed body. He was sure every part of him had grown larger, and he could feel the extra weight in his sack as full, swollen orbs pounded against the inside of Emily's thighs, much to her growing delight. "Next time, though, I won't be waiting this long for you, sis."

Her eyes flashed a brilliant, intense shade as she met with his gaze. "You'd damn well better not," she encouraged. "Do you have any idea how h-hard it is...to bite my lip and stifle my moans every night while I'm...c...cumming..."

The warmth of his body driving against her own was heavenly enough, but the weight of his length pushing up against her upper wall and teasing her g-spot turned the story of her evening routine into a fresh reality, with excess juices spilling down around her brother's tender sack.

He felt the first, uneven clench of her inner muscles around his shaft and knew her heat was pushing her into a rapid orgasm, but he'd underestimated just how much warmer and messier she would be as a result of the curse; he didn't expect to join her in the throes of climax so early on.

"Stop playing without me, then," Ty whispered to her, his voice breathless as he tried to pick up his thrusts and meet his sister's pace...but their bodies could only maintain for so long in their new, tauric forms. "And start cumming with me."

A union that never should have happened was reaching the point of fruition as Emily's liquid desire coated her brother's shaft completely, leaving it to glisten in the low light of the sapphire every time it escaped her clutches...but it never stayed free for very long. Ty _needed_to feel the clench of her release, and every time he pumped back into her, he felt himself drawing closer and closer to that inevitable moment, until finally, his seed erupted from the tip of his vulpine member.

In the midst of her heat, Emily could think of no greater relief than the warm, milky cum of a handsome fox swirling around in her womb; there was only one around for her to sample such a thing from, but even when it was her own brother, she clenched her legs around his sides and held him tight as his knot slipped past her tender, pouted folds.

"What d-does it feel like I'm doing?" she asked, keeping her stare right on his own and forcing him to embrace the twisted reality of what he'd done, even when her climax was finally ebbing.

His own was still in full swing as his knot took inside of her welcoming passage, allowing her to feel the pulse that came along with each little jet of seed that followed...and with each one, the reality of their act was further cemented, until Ty's length was swimming in the depths of its own mess.

"Feels like you're telling me you need another round," he murmured through quiet, shallow panting. "If you ever let me free, that is."

Before the curse fully ensnared them, Ty made a mental note to break his sister's heat so they could take the sculpture and escape.

Now that it had him just as much as it had her, it was unclear if they'd ever get free...but they'd have a lot of fun being trapped together.