nona

Note: this is a standalone smut fic written in third person, from my discontinued au series, but if you would like to learn more of pirate!matt’s lore to understand this fic better, click here 🏴‍☠️

Contains: smut, porn with slight plot, threesome (m x f x f), sex with non-humans (sirens), body transformations, oral (m & f receiving), fingering, handjob, multiple orgasms, dirty talk, temperature play, hair pulling, light biting, nail scratches, voyeurism, overstim, unprotected piv, creampie, switch!pirate!matt x dom!fem oc

Captain Matt had heard the rumours three ports back. A drunk sailor in town had mentioned it between swallows of cheap ale, of an ancient cove on an island that appeared on no map. It held treasure that had killed every man who had gone looking for it. The coordinates had slipped out between cups, and a merchant's widow in the next town had filled in the rest after the pirate had warmed her bed. 

The island rose from the sea like a clenched fist. Boulders the size of towers jutted from the water, jagged and black, and their surfaces studded with iron hooks. Skeletons hung from those hooks, swaying gently in the sea breeze, as their bones clicked together like wind chimes. Some still wore scraps of clothing, a torn coat here, a belt there, and a boot that had never rotted away. One of them even had a gold ring still circling its finger bone, catching the last of the daylight.

The pirate captain let out a low whistle. "Well, that's not ominous at all."

He guided his ship through the gap in the boulders with the ease of a man who had done this a thousand times. The passage was narrow, barely wide enough for the beam, making the rock scrape against the hull with a sound like fingernails on slate. The skeletons loomed on either side, close enough that he could have reached out and touched their dangling feet. One of them turned slightly as he passed, its empty eye sockets seeming to follow him.

He gave it a smug grin. "Better luck next time, mate."

Then the shadows swallowed him whole.

The water inside the cove was black and glassy, so still it looked like a sheet of polished obsidian. The cliffs rose steep on either side, draped in moss and vines, their surfaces slick with moisture. At the far end, a beach of pale sand curved like a crescent moon, and beyond it, the mouth of a cave. 

Matt dropped the anchor and killed the sails, letting the ship drift. He moved to the railing and peered into the dark water. He saw something move beneath the translucent surface. It was a shadow too big to be a fish, and definitely too slow to be a trick of the light. It circled once, twice, and then disappeared into the depths.

"Friendly." he muttered to himself.

The pirate then stepped onto the railing and jumped, landing on the wet sand with a soft thud. The beach was cold, the sand dark and compacted, and studded with shells that crunched under his boots. He walked towards the cave, with his hands in his pockets, and posture loose and unhurried, like a man taking an evening stroll.

The cave mouth was tall and narrow, a vertical gash in the rock. The air that came out of it was cool and damp, which smelled of salt and something else. Something old and metallic... Matt paused at the threshold and tilted his head, listening. From somewhere deep inside, a sound echoed. It was soft and melodic, the barest whisper of a voice, threading through the dark like smoke through a keyhole.

He grinned to himself, as his suspicions were proved correct. Sirens.

Eagerly, Matt stepped inside. The cave opened wider than he expected, its walls curving inwards like the ribs of some massive beast. Stalactites hung from the ceiling, their tips glistening with moisture. The air was thick and still, carrying the weight of centuries.

He moved forward, his worn boots scraping against stone. He found what he was looking for against the northern wall, the three vertical scratches, which were spaced evenly, running from shoulder height to his waist. There was a flat stone on the ground beneath them, which he pressed his palm against and pushed it. It gave in with a groan, tilting downwards to reveal a hollow space.

Matt reached inside, his fingers brushing against a rough cloth, and pulled out a bundle wrapped in brittle oilcloth. The cloth crumbled at his touch, but the key inside was intact. Iron, black with age, and its teeth shaped into a pattern which he didn’t recognize.

"Gotcha."

And then he heard it clearly. The voices. Drifting from deeper in the cave, haunting but melodic, layered over each other like the threads of a song. They were close, in fact much closer than they had been at the entrance. He turned towards the sound, as he pocketed the key in his coat.

The lagoon was at the back of the chamber. He hadn’t noticed it before, as it was hidden in the shadow of a hanging rock formation. But now it was glowing, a fluorescent green that pulsed like a slow heartbeat, casting ripples of light across the walls and ceiling. The water was clear, impossibly clear, and at its center something moved beneath the surface.

The song swelled. There were two voices now, harmonizing, wrapping around each other and around him.

The pirate stood there, transfixed, as the surface of the lagoon broke. A grin split his face, slow and wide. It was the kind of grin that had gotten him into and out of trouble in equal measure many times before.

He knew the signs. The glow that pulsed with intent, and the way the song burrowed under his skin and settled somewhere warm. Most men would have turned around, counted their blessings, and sailed for safer waters.

But Matt stepped closer.

The sand changed under his boots as he approached the lagoon, shifting from coarse and dry to damp and compacted. The voices wrapped around him, one low and rolling, and the other higher and brighter, weaving together like fingers lacing. He stopped at the edge, his boots almost touching the water.

The reflective surface stirred. Two silhouettes moved beneath the glow, sleek and swift, cutting through the water with the grace of creatures who had never known the weight of bones. They rose together, heads breaking the surface in perfect unison, as water streamed from their faces, hair, and shoulders.

The sirens were identical. Their skin held the colour of deep water touched by rot, blackish green and luminous, slick with an oil-sheen that caught the green glow of the lagoon. Their hair fell in endless ropes of black, wet and heavy, wrapping around their throats and trailing down their shoulders. Copper eyes gleamed from faces that could have been mirrors of each other. When their lips parted, the teeth inside were needles, rows of them, and their tongues were black and forked, flickering at the tips like they were tasting the air between them.

Water streamed over their collarbones, between their breasts, and over the flat planes of their stomachs. Both were bare from the waist up, their breasts rising from the water, wet and gleaming, nipples dark and peaked. Every line of them was a perfect match.

The one on the left spoke first. Her voice was the lower register of the song, honey and gravel. "The pirate captain. The infamous Captain Matt. The one who cannot die."

"Rumours of my death have been greatly exaggerated" he chuckled. "But have also been greatly enjoyed. I read a particularly creative one stating I was eaten by a kraken. Made me sound very dramatic."

The other laughed, and the sound was bells and breaking glass. "You're shorter than I imagined."

"Funny. Most women say the opposite." He spread his arms wide. "But please. Take your time. I'm in no rush."

Neither of them moved. They watched him from the water, their copper eyes tracking his every breath. The pause stretched long enough that his grin started to feel like something he was holding onto rather than something that came easy. It was her, the first one. She held his gaze steady, and the air between them grew dense.

"We know what you are, Captain." she said finally. "The man who cannot die. The man who takes what he wants and leaves ruin in his wake. We've heard the stories."

"Only the good ones, I hope."

"The ones about your thirst." the other said, gliding through the water to his right, her voice curling around him from that side. "Your hunger. Your endless, bottomless appetite." Her forked tongue touched her upper lip, quick and intentional. "For treasure. For danger. For women."

"For all three, usually in the same night." Matt tilted his head, studying them. "You got names, sweethearts?"

The first one smiled, slow and sharp, her needle teeth catching the glow. "You may call me Mara."

The other dipped her chin, water streaming from her black hair. "And I am Eira."

"Mara and Eira." He rolled the names around. "Beautiful. And currently occupying the lagoon I need to get past." He sighed theatrically. "I was hoping for a straightforward acquisition tonight."

"Nothing is simple with us." Eira hissed. Her fingers trailed across the surface of the water, leaving ripples that glowed faintly in her wake. "Men who enter our waters do not leave. They stay. They become part of the song. Part of the deep."

"Is that an invitation?"

"It is a warning."

"Good. I hate it when people skip straight to the threat without giving me a chance to be charming first." The pirate crouched down, bringing himself closer to their level, with his elbows resting on his knees. "Here's the thing, ladies. I'm not like the other men who've found their way into this cave."

"We know." Mara's voice dropped, and the playfulness bled out of it. "You're cursed the same as we are. Bound to something older than yourself. We felt you coming before you passed the boulders."

Matt's grin didn't waver, but something flickered behind his eyes. "You're well-informed for a couple of girls stuck in a lagoon."

"We listen." Mara's hand breached the surface and reached for his boot. Her fingers wrapped around his ankle, cold and wet, impossibly gentle. The touch sent a shock through him that had nothing to do with temperature. "The water carries whispers. And your name, Captain, travels on every current."

Her hand slid up his calf, leaving a trail of cold that tingled through the fabric of his trousers. She didn't ask or seek permission. She simply took what she wanted, her fingers pressing into the muscle of his leg, and he found himself not pulling away.

"Then you know I'm not the kind of man who takes no for an answer."

"We know." Eira smiled, her needle teeth glinting. "That's what makes this interesting."

"I have a good feeling about this place."

"You should not." Mara warned. "We have killed hundreds of men. We have sung them under the water and picked their bones clean. You are no different."

"Then why haven't you sung yet?"

The question landed hard. Mara's fingers paused on his calf, and Eira went still.

"Go on." Matt spread his hands. "Sing. Let me hear the full thing. I am told it is quite the experience."

"It kills men." Eira forewarned.

"So I have heard." He met Mara's copper eyes and held them. "Try me."

The silence stretched. The green light pulsed and the water lapped against the edge of the pond, and for a long moment, neither siren moved.

Then Mara smiled. It was not the sharp, predatory smile from before. This one was slower, and more curious. "Eight hundred years." she said. "And you still find ways to surprise yourself."

"Is that what I am doing?"

"You are the first man to walk into this cave who did not flinch when we showed our teeth." Her hand resumed its path up his calf, past his knee, and then finally settled on his thigh. "That makes you interesting. And interesting men do not die quickly. We like to savour them."

"The question is what you want from us, Captain.” Eira added. “The treasure is beyond the inner chamber. You have the key and could walk past this pond and never see us again."

"Could I?"

"No." they giggled mischievously.

"Then it sounds like the choice is already made." He straightened from his crouch, but didn’t step away from the water. "You want something from me, and I want something from you. And somewhere in that water is a treasure I traveled three weeks to find. So let us make a deal."

Mara's hand tightened on his ankle. "What deal?"

"You let me pass. And I give you something you want more than my bones at the bottom of your pool."

"And what could you possibly give us that we want more than that?"

A grin spread across his face, slow and certain. "A story you haven't heard before."

The sirens exchanged a glance. Something passed between them, wordless and quick, a conversation that did not need sound. Then Eira moved, rising from the surface until her wet body was pressing up against his, cold and solid. Her hand found his chest, palm flat over his heart, and her copper eyes searched his face.

"You are not lying." she said. "You actually believe you can entertain us."

"I know I can."

"Arrogant."

"Accurate."

Mara rose from the water as well. The pirate had not registered the shift from submerged to upright, her now waist-deep in the water, as it streamed down her body. Her breasts caught the light, her stomach flat and rippled with muscle, as her skin gleamed like polished stone. She took a step towards him, and the water seemed to part for her.

"Come in the water." she said, and it was not a request. "Let us decide if you are worth keeping alive."

Matt did not move towards the water, but also didn’t move away. He looked down at her hand on his leg, then back at her face, and something in his posture shifted. There was less swagger, and more stillness. "Ask me nicely."

Mara's eyes flashed with challenge. "We do not ask."

"You do if you want me to stay."

Eira's laugh was sharp. "You think you can bargain with us?"

"I think you have already decided not to kill me." He held Mara's gaze. "Otherwise I would be dead by now. So let us drop the act where you pretend I am just another meal. You want something. I want something. And we both know that starts with me getting in the water."

The silence that followed was heavy, thick with the pulse of green light and the slow drip of water from the stalactites. Mara studied him, as her copper eyes moved over his face, to his throat, and then the line of his shoulders. She was reading him the way he had read the cave, looking for the marks that told a story.

"Stay." she said finally. The word came out softer than the ones before it. "Stay, then. Let us see what you are made of."

Matt held her gaze another beat, before his face broke into a triumphant grin. "Well, when you ask so nicely, it's hard to refuse." Then he stepped into the water, boots and all.

The water was warm where it should have been cold. It kissed his ankles like a welcome, rose past his calves, and soaked through the leather of his boots. The warmth climbed his legs, and he felt the strangeness of it, water that should have been freezing wrapping around him like a bath drawn by someone who knew exactly how he liked it.

Mara's hand found his first. Her fingers interlaced with his, and he felt the webbing then. Thin membranes of skin connecting each finger, pulling taut as she gripped him. The sensation shot up his arm and settled somewhere in his chest. Eira took his other hand, her webbed fingers threading through his, and the two of them pulled him further in.

The water reached his waist. His coat floated around him, dark fabric billowing on the surface. The green glow was brighter beneath, coming from the stones that lined the pond floor, and the moss that pulsed with its own light. Matt could see the bottom sloping away into darkness, deeper than the lagoon had any right to be.

Mara pressed herself against his front. Her cold skin met his warmth through the wet fabric of his shirt, and she made a sound low in her throat, something between a sigh and a hum. Her breasts flattened against his chest, her nipples hard points through the soaked cloth. She tilted her head up, and her copper eyes were close enough that he could see the pupils, vertical slits like a cat's, dilating as she watched him.

"You burn." she purred. "I can feel it through your clothes."

Eira pressed against his back. Her arms slid around his waist, her hands flat on his stomach, with her mouth close to his ear. Her breath was cold, but it raised goosebumps on his skin. "We have waited a long time for something like you."

"I aim to please, darlings." he smirked cockily.

Mara's hand came up to his chest. She pushed the wet fabric aside, buttons giving way under her cold fingers, and her palm pressed flat against his bare skin. Her eyes fluttered shut. "So much heat. It has been centuries since I felt anything this warm."

Eira's hands moved lower. Her webbed fingers found his belt, worked the buckle loose with practiced ease. Her mouth brushed the curve of his ear. "Let us warm ourselves, Captain. Let us borrow some of that fire you carry."

Then the sirens pulled the pirate underwater. And beneath the surface, the world went quiet and thick. That’s when Matt felt them fully for the first time. Their tails, which were long and powerful, and covered with scales caught the dim light. They wrapped around his legs and waist, and pinned his arms to his sides. Mara's tail coiled around his left thigh, squeezing tight, as the muscles flexed beneath the scales. Eira's wound around his torso, binding him to her, as her scaled length pressed against his ribs. The grip was strong enough to hold, but loose enough to let him move.

Mara's hand found his jaw, as her fingers dug into the bone, tilting his face towards hers. She then kissed him like she had been waiting centuries for the chance.

Her mouth was cold. Colder than the water around them, and cold enough that it registered as a shock against Matt’s lips. Her forked tongue pushed past his teeth, sliding against his, and the split tips moved independently, one tracing his upper palate, while the other curled around his tongue. The sensation was strange and electric, so he kissed her back, matching her intensity, as his teeth caught her lower lip, and his own tongue pressed into her mouth. The kiss was messy and hungry, all teeth and tongue with the scrape of needle-sharp edges against his skin, but he didn’t pull back. He instead leaned into it, giving in completely.

Behind him, Eira's mouth found his neck. Her lips dragged down the column of his throat, as her forked tongue traced the line of his pulse, tasting the salt of his skin through the water. Her webbed fingers spread across his chest, palming the muscle there, as her thumbs found his nipples and circled them. The cold of her touch made his cock twitch, and she pressed closer, her tail tightening around his torso, as her scales scraped against his skin through the remnants of his shirt.

And Matt was smiling through it all.

He could feel it, the curve of his lips against Mara's mouth, and the way his teeth caught her lower lip in a playful bite before he pulled back just enough to let her see. Her copper eyes were wide, pupils blown, and she stared at him like he was something she couldn’t quite figure out.

Her hand released his jaw and slid down his chest, her fingers trailing through the beaded necklaces, as she pushed them aside to feel his skin. Her palm pressed flat over his heart, and she held still for a moment, and Matt noticed the flicker of confusion in her gaze.

She pressed harder, as her webbed fingers spread, searching. Her copper eyes snapped to his face, and in them he saw the moment it registered. There was no heartbeat, or rhythmic thumping beneath her palm. Nothing but still, silent flesh where a living man's pulse should be.

Matt grinned, wide, slow, and full of teeth. His eyes held Mara’s, and there was no fear in them. Only the sharp pleasure of being seen and not understood, and of being a question no one could answer.

Mara cocked her head, curiosity cutting through the hunger and lust. Her forked tongue flicked out, tasting the water between them, like she could taste the wrongness of him and the impossibility of his existence.

And the pirate captain’s ego only grew by a tenfold, because that was the look he had spent eight centuries chasing. That flicker of awe, that moment when someone realized they were looking at something that should not exist, and they could not look away.

Their tails worked in tandem, pulling him deeper. The green glow faded above them, the water darkening as they descended further, and the bottom sloping away into a channel that opened into something larger. Pressure built in Matt’s ears, but he didn’t mind it. He let them take him, with their bodies wrapped around his, and their tails propelling them through the dark.

As they plunged deeper, their hands didn’t stop moving. Eira slid the heavy leather of his coat off from his shoulders, letting it sink away. She then slipped the shirt off his shoulders, discarding the fabric without any care.

Matt was already hard before Mara's hands reached his cock. The cold of them, and the twin pressure of their bodies against his front and back, had him straining against his trousers before she even got them open. Her fingers worked the fastenings, pulling the wet material down his hips and over his thighs. His boots came off one at a time, as her webbed fingers worked the leather free, and the trousers tangled around his ankles for a moment before they slipped away into the dark.

Behind him, Eira's teeth grazed the back of his neck while her hands slid over his stomach and hips, learning the bare skin the water had finally given her. The pirate was naked between them now, stripped in the dark of a narrow channel, as the deep cold pressed against his skin everywhere they were not touching. And everywhere they were touching, he burned.

When the channel opened up again, the green glow returned, now seeming softer than before. Beneath them the water began to shallow towards a shelf of rock. They had surfaced in a hidden chamber, tucked away deep on the island.

Matt’s head broke the water and he gasped, his lungs grateful. The air was cool and damp, thick with the smell of stone and salt. The chamber was small, with its walls curving inwards like the inside of a shell. A flat shelf of rock jutted from the wall at water level, smooth and worn, dark where the moisture clung to it. Above them, the ceiling rose into shadow, and the only light came from the water itself, a faint green glow that pulsed beneath the surface.

Mara's tail unwound from his thigh. She pulled herself onto the rock shelf in one fluid motion, as her scales reflected in the dim light while they shifted into legs, though the transformation wasn’t complete. Her hips and thighs were human-like now, but her feet remained webbed and her toenails dark as polished stones. She settled against the rock, with her back resting against the wall, with her legs parted. The siren looked at him with her copper eyes, as her needle teeth gleamed in a smile that promised everything.

Her hand slid down her stomach, over the flat plane of her belly, and finally dipping between her thighs. Her fingers parted the lips of her cunt, spreading them wide, all for him to see. The pink of her inner flesh was startling against her dark skin, slick, swollen, and glistening in the reflective light. Her clit was prominent, a hard little pearl peeking from its hood, and her hole was open, waiting, and fluttering like she was starving for him.

Mara held herself open and looked at Matt, and she rasped. "Taste me, Captain."

Behind him, Eira rose from the water. Her arms wrapped around his chest from behind, as her cold breasts pressed against his back, and her mouth found his ear. Her webbed fingers slid down his stomach and over his navel, before descending lower. "You heard her. Put that clever tongue of yours to good use."

Matt eagerly grinned, as water was still streaming down his face, keeping his hair plastered to his head. He surged forward, as his hands found Mara's thighs, pushing them wider, and he lowered his mouth to her cunt like a man who had been dying of thirst.

The first taste was electric. She tasted like salt and mineral, and it coated his tongue and slid down his throat like she was feeding him a part of herself. Her flavour was cold at first, then it gradually felt warm, spreading through his chest like liquor. He groaned against her flesh and dove his tongue deeper.

When his tongue found her clit, he circled it repeatedly, learning the shape of her. Above him, Mara let out a breathy gasp as her hand flew to his hair, her webbed fingers tangling within the wet strands. He took her clit between his lips and sucked, making her hips buck off the rock.

"Yes!" she hissed. "Don’t stop."

Matt had no intention of stopping. He licked into her, his tongue flat and broad, dragging from her hole up to her clit in long, intended strokes. Mara’s own forked tongue was impressive, but his tongue was human and warm, which Matt knew exactly what he was doing with it. He then pressed the tip against her entrance, teasing, before finally dipping inside.

Inside, she tasted even better. Her inner walls were hot despite her cold skin, slick and gripping, and he fucked her with his tongue like he would with his cock, with his nose pressed tight against her clit. The siren was moaning above him, with her hips grinding against his face, and her hand fisted in his hair.

Behind him, Eira's webbed fingers slowly wrapped around his cock.

Matt was painfully hard, and her cold hand was a shock against his heated skin. She slowly stroked him once, almost like testing him, as her thumb dragged over the head, spreading the white bead that had already gathered there. Her palm was cool and smooth, the webbing between her fingers creating a friction that was different from anything he had felt before. He groaned against Mara's cunt, the vibration making her whimper.

"Look at you." Eira murmured, as her hand worked his shaft in long, slow pumps. Her other hand gripped his hip, with her nails digging into his skin. "So eager. So warm. I can feel you throbbing in my hand."

He pulled his mouth off Mara just long enough to gasp. "Keep talking, sweetheart. I like the narration."

The pirate’s sharp tongue humoured Eira, making her laugh sultrily. She squeezed the head of his cock, with her thumb pressing into the slit, and it made his hips buck forward involuntarily. "I bet you do. I bet you like being watched too. Knowing that she’s up there watching me stroke your pretty cock while you fuck her with your mouth."

On cue, he looked up. Mara was in fact watching him, with her copper eyes half lidded, her lips parted, and her bare chest heaving. Her hand was still fisted in his hair, and she tugged, pulling his mouth back onto her cunt with a sharp command.

"Stop running your mouth and finish what you started."

He smirked against her thigh, and complied, dropping his head again and diving back in.

He ate her out with the utmost dedication. His tongue lapped at her clit in tight, fast circles, then slowed down to broad, flat strokes that made her whole body shudder. He sunk two fingers into her cunt, curling them and searching, and when he found the spot that made her cry out, he pressed hard and did not let up. Mara’s inner walls clenched around his fingers, and her hips rocked against his hand. She was babbling now, words in an ancient language he didn’t recognize, as her nails raked across his scalp.

Close behind, Eira's hand moved faster. Her grip tightened, and she milked his cock with practiced precision, as her thumb dragged over the sensitive ridge beneath the head with every stroke. She was still pressed up against his back, with her nipples now hard points digging into his damp skin.

"You are close." she announced. "I can feel it. You’re twitching in my hand."

"Wouldn’t take much." he admitted, his voice muffled against Mara's thigh. "Not with her taste on my tongue and your hand on my cock."

"Good." She released him, and Matt pathetically groaned at the loss. But then she was moving, slipping beneath the surface of the water, and positioning herself in front of him. Her head disappeared, but he felt her hands on his hips, guiding him forward, and then finally her mouth closed over his thick cock. The world narrowed to nothing but heat and cold, and the impossible suction of her throat.

Eira’s head bobbed beneath the surface, and he felt every movement amplified by the water. Her tongue, forked, wrapped around his shaft in a helix, the split tips working opposite sides. Her throat opened for him, taking him deeper than any human woman ever could, and she hummed melodically around his length, the vibration traveling through the water and into his bones.

Matt moaned against Mara's hole, his rhythm faltering for a moment. But Mara tightened her grip on his hair, forcing his mouth back where she wanted it.

"Don’t you dare stop." she growled. "I’m not done with you yet."

He chuckled against her sensitive flesh, the sound vibrating through her clit, making her shudder. "Demanding. I like it."

So he redoubled his efforts. His tongue found her clit again and he worked it with single-minded focus, with his fingers still buried inside her, curling and pressing, and driving her towards the edge. Mara was close, he could feel it in the way her thighs trembled against his ears, her breath caught, and how her cunt gripped his fingers like she was trying to pull him deeper.

Below the surface, Eira's head moved faster. Her mouth was a wet, sucking tunnel of cold pleasure, and she took him to the back of her throat with every bob, as her forked tongue lashed at the underside of his cock. Her hands gripped his ass, pulling him deeper, and he felt the scrape of her nails, the press of her webbed fingers, and the cold suction of her throat.

Matt was being pulled apart and overstimulated in the best way. Mara's taste flooded his senses, and Eira's mouth around his cock, was milking him of everything he had.

Eventually, Mara's orgasm hit her without warning. Her back arched off the rock, as her mouth opened in a shrill cry that echoed off the stone walls, and her cunt clenched around his fingers in long, pulsing waves. Her release flooded his hand, warm and iridescent in colour, but Matt continued lapping at her clit through every spasm, drawing it out, making her ride his tongue until she was gasping, shaking, and pushing his head away with trembling hands.

He finally pulled his mouth off her, grinning proudly, with his chin coated with her arousal. "Good girl."

Mara's chest heaved, as she tried to catch her breath again. She looked down at him, with her eyes wild, and she laughed, a breathless sound. "You talk too much."

Underwater, Eira's mouth had not stopped. She had been working his cock through Mara's entire orgasm, her rhythm steady and relentless, and now that he was no longer distracted, the sensation crashed over him like a tidal wave. Matt’s hips thrusted forward, fucking her throat, and she took it, with her hands gripping his ass and her throat opening wider.

"Fuck!" he gasped, his hands finding her head, as his fingers tangled within her long strands. "I’m not going to last."

Mara's eyes lit up at his vulnerable state. She slid off the rock, dropping into the water beside him, as her hand found his broad chest and her mouth on his neck. Her forked tongue traced the line of his jaw, and she husked against his ear, "Cum for us. Let her taste you now."

Matt was gone. The words undid him, along with the cold press of Mara's body against his side, and the wet heat of Eira's mouth around his cock. The twin sensations of being wanted by two ravishing creatures who could kill him without breaking a sweat, turned him on immensely. He came with a groan, his hips driving deep into Eira's throat, as his release flooded her mouth in hot, thick pulses.

Eira didn’t pull away. She swallowed around him, her throat contracting, as she swallowed every drop. Her tongue flicked at the head of his cock as he softened, cleaning him, and when she finally resurfaced, her lips were slick and her copper eyes were gleaming.

Matt was still trying to catch his breath. He leaned against the rock shelf, with his body humming from the intense orgasm, and his cock still tingling from the cold of Eira’s throat. Mara pressed against his side, as her hand laid flat on his chest, her fingers tracing idle patterns on his skin.

"We’re not done with you yet, pirate." she whispered.

Eira nodded, tilting her head slightly. "And you haven't had enough yet either, have you?"

He looked between them, the two identical creatures with their sharp eyes, their cold scaled skin, and their menacing, hungry smiles. The treasure was somewhere beyond this chamber. But the ache in his bones was far more pleasant and the warmth between them was real. And he was in no hurry to leave.

"I guess I’ve got some time to spare." he said, licking his lips, as a wicked grin grew upon his mouth.

On cue, Mara's hand slid down his chest, past his stomach, until her fingers traced the line of hair that led below the water. Her eyes turned dark, her pupils wide, and she held his gaze as her hand sunk beneath the surface.

Eira pressed her cold body against his side, her hand joining Mara's beneath the water, and their webbed fingers wrapped around his cock together. He was soft from coming, but the cold of their touch was a shock, and he felt himself stir between them, as his blood warmed and flesh responded.

"We've barely started with you." Eira's thumb dragged over the head, and his hips twitched. "That was only the appetizer."

Matt let his head fall back against the rock, as a deep chuckle rumbled from deep within his chest. "Two beautiful women, an underground lagoon, and I'm the appetizer. I've been called worse."

Mara's grip tightened. She stroked him slowly, coaxing him back to full hardness, as her webbed fingers created a friction that was silk and sandpaper, nothing like he had felt before. "We want to feel you properly, Captain. All of you. Inside us."

The words landed somewhere low in his gut. He opened his half-lidded eyes and looked at her, and saw the hunger in her lustful gaze, as her needle teeth peeked through her parted lips.

"Then take me." he said. “What are you waiting for? Use me.”

The twins exchanged a look between each other with a raised eyebrow. Then the two of them pressed against him from either side, and their hands worked in tandem, one on his cock, one on his balls, one sliding up his chest, and one gripping his ass.

Eira kissed him, her mouth the temperature of deep water, but it softened against his, and the cold was startling at first, but then intoxicating. He tasted salt, copper, and something floral, rotting sweet, like a garden after a flood. Her forked tongue slid against his, each side gliding across his own, deepening the kiss further. Meanwhile, Mara licked a stripe up the column of his neck before softly biting his earlobe. And Matt completely surrendered to their touch.

Eira broke the kiss first and pulled herself onto the rock shelf, as she settled on her back at the edge, with her hips at the waterline, and her cunt open and waiting. Mara pulled away to guide him forward, with her hands on his hips, and her mouth against his ear.

"She wants to feel that warm cock inside her. She wants to know what it feels like to be filled by something that burns."

The pirate didn’t need to be told twice. He immediately moved between Eira’s thighs, his hands finding her hips, and the cold of her skin a shock against his palms. She was dripping, swollen, and open, and when he lined himself up, the head of his cock pressed against her entrance, and they both went still.

"Tell me if I hurt you." he said.

Eira laughed, sharp and incredulous. "You cannot hurt me, pirate. I am a siren. I have killed a hundred men with my voice alone."

"Does not mean I want to hurt you."

Something flickered in her eyes. Surprise, maybe. Or perhaps curiosity? She reached up and touched his jaw, her webbed fingers cool against his skin.

"Fuck me, Captain." she husked. "I want to feel what your tales promise."

He finally pushed inside her.

The cold was the first thing he registered. She was cold everywhere, but inside, a deep chill within her gummy walls wrapped around his cock like she was drawing the heat out of him directly. Her walls were wet and tight, gripping him as he sunk deeper, and the sensation was electric. The contrast of his heat and her cold created a friction that made him groan and his breath catch.

Eira’s head fell back, with her mouth opening in a sound that was half gasp and half moan. Her webbed fingers dug into his shoulders, and her scaled legs thrashed in the water, sending ripples across the surface.

"Yes!" she cried out.

Matt finally bottomed out inside her, with his hips pressed against hers, and he stayed there for a moment, letting her adjust. Her throbbing hole pulsed around him, clenching and releasing, and he felt the internal ridges of her. Her body was shaped differently on the inside, and he was feeling textures he had never felt before.

"Move." she demanded. "Captain, move!"

He obliged. He pulled back slowly, watching himself emerge from her cold flesh, and how his cock was slick with her wetness. Then he thrusted forward, burying himself in one smooth stroke, and the sound she made was worth every nautical mile he sailed to reach this island.

Matt eventually found a rhythm. It was deep and calculated, each thrust bottoming out inside her, with his hips grinding against hers at the end of every stroke. His hands gripped her hips, and the cold of her skin seeped into his palms, but the heat between them was only building further.

Behind him, Mara’s webbed fingers pressed against his lower back. She was watching him ruin Eira, and he could feel her gaze, as her hand trailed down over his ass, her nails scraping lightly over his skin.

"Look at you…" Mara murmured. "Fucking a siren in her own pool. You have no fear, do you?"

"Not much use for it." he grunted, driving into Eira. "Gets in the way of a good time."

Eira's legs wrapped around his waist, pulling him deeper. Her cunt clenched around him, to intentionally squeeze him, making his rhythm stutter.

"Don’t—" she panted. "Don’t you dare fucking stop."

The pirate captain had no intention to.

So he fucked her harder, as his hips slapped against hers, and the water around them churned with the force of his thrusts. Eira's hands found her own breasts, and pinched her nipples, as she watched Matt through half-lidded eyes, and her needle teeth baring in a sated grin.

"Your heat. I feel it." she moaned. "It feels divine."

"I’m close." he grunted. "Tell me where you want it."

"Inside." she replied without hesitation. "I want to carry your heat with me."

The words undid him. He drove into her one last time, buried as deep as he could go, and his orgasm crashed through him like whiplash. He came with a shuddering groan, as his creamy, thick release flooded her cold channel. The heat of him meeting the cold of her, made Eira moan beneath him, while her cunt continued to milk him, with her legs locked around his waist, holding him in place.

When Matt finally stilled, his forehead rested against her bare chest. He was breathing hard, and his body was trembling, while his cock was still twitching inside her.

Eira's hand found his jaw, to tilt his face up. Her slit-like eyes were soft, almost tender. "You’re full of surprises, Captain."

He weakly chuckled. "So I've been told."

He finally pulled out slowly, and she shuddered at the loss, her cunt clenching emptily. As the cold air hit his cock, he felt their combined arousals cool upon his skin.

Before he could properly catch his breath, Mara's hand wrapped around his arm, to turn him towards her. She then pushed him against the rock shelf, the surface rough against his thighs, and straddled him before he could protest, completely sliding him into her aching hole.

Matt sharply inhaled from the sudden sensation. Her cunt was different from Eira's. It was tighter, hotter somehow despite her cold skin, and she sunk onto him with a gasp that echoed off the stone walls. Her hips rolled against him immediately, finding her own rhythm, with her hands braced on his shoulders, and her dark hair falling around them like a curtain.

"My turn." she said, her voice deep and rough. "Show me what you have left."

He gripped her hips tightly and met her thrust for thrust, as the water lapped at their joined bodies. The cold of her was deep and consuming, but he was still warm from Eira, and still hard from the sight of her, but he fucked Mara with the same deliberate intensity.

"Yes!" she breathed. "Fuck– yes!"

He fucked her with a punishing pace, after he learned the rhythm of her body, the way her hips rolled to meet his, and the way her inner walls gripped him with every retreat. Matt felt Eira now pressed against his back, with her hands on his hips, and her mouth on his spine.

Then Mara's eyes met his. "Harder."

And he complied, the rhythm now turning savage, as his hips slammed against hers. Her breasts bounced with each thrust, as she threw her head back, eliciting the most beautiful sounds Matt had ever heard. Her cunt gripped him like a fist, and the cold was spreading up his shaft, through his groin, and pooling in his stomach like he was drinking ice water.

Mara rode him harder and faster, meeting his thrusts, as her nails raked across his chest, leaving red lines that healed as soon as they appeared. Her head was still tipped back, as she moaned out loudly, the sound itself sounding like a harmonious tune.

Matt reached between them, his thumb finding her engorged clit, and the moment he touched her, she shattered. Her orgasm crashed through her, her inner walls clamping down on his cock, as her body shuddered against his. The sensation pushed him over the edge with her, and he came again, while buried inside her, as his cum mixed with hers in the cold water that surrounded them.

Mara collapsed against his chest, with her breath coming in short gasps, as her cold skin pressed against his warm one. Her lips found his neck, and her forked tongue traced a slow line up to his ear.

"You’re irresistible, Captain." she whispered.

Matt laughed, the sound weak and wrecked, after his two intense climaxes. "You girls are going to be the death of me."

"No." Eira said, surfacing beside them, as her hand found his under the water. "We’ve already decided. You are far too interesting to kill."

"How merciful of you."

He leaned back on the submerged ledge, with one siren in his arms, and the other pressed against his side, as the green glow of the lagoon pulsed softly around them. The treasure was still waiting somewhere beyond this chamber. But neither seemed to be in any hurry to remind him. And the pirate believed he had already found the real treasure on this island.

dedicated to sturnblr's very own siren, isa @chrisssiren 🧜🏻‍♀️

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