Work Text:
“Satoru… What on earth is that?” Suguru asks, staring wide eyed at the strange, massive creature struggling in their net.
It’s bigger than any fish Satoru has ever seen before, with a long, scaly golden tail dotted all over in black spots as it writhes amidst the normal fish and crabs they had drug up out of the ocean.
“Why did something that big even come so close to shore?” Satoru thinks out loud, approaching the hanging net with no small amount of trepidation.
They don’t usually have to go far out to fish. It’s just him and Suguru, living in a small but comfortably furnished house on the tropical Malaysian coast. Satoru’s parents had left it to him in their will upon their passing, and it took very little convincing to get Suguru to leave the miserable hustle and bustle of Tokyo with him and never look back.
They poured every last dime of their combined savings into buying a fishing boat and now they live a quiet, but comfortable life together without the stress and chaos of the city to make them miserable. Satoru can sit on their little dock and hold Suguru’s hand, and there’s nobody around to look at them with hate or disgust.
It’s nice. The ocean comes up into the land to form a small but beautiful cove where they can swim without worrying about sharks or jellyfish or dangerous undertows, and there’s a small village a few hours away where they can stock up on any canned goods or fresh produce they can’t grow themselves in the garden they keep behind their house. There’s even a small stream that winds nearby where they can collect their own fresh water for drinking, cooking, and bathing.
Satoru is happy with the simplicity of their lives.
“I guess we should try to put it back? We don’t really need that much meat,” Suguru points out, reaching for the lever to lower the net onto the deck.
They’d already brought the boat to shore so Satoru hopes that, whatever it is, it can swim itself back out to sea.
The fish whirls and struggles as the net begins to spread out, and when the smaller fish and crustaceans start to spread out and away from their larger netmate Satoru feels his mouth drop open.
Golden eyes flash at them as the man-fish creature rolls onto its back to snarl at them, using its webbed hands to shove away from them and towards the edge of the boat. The lower half of its body is that of a fish, made up of the gold and black spotted scales Satoru had seen earlier with a large, fanning golden fin at the end, and edged with smaller gold fins along the sides of its body. The upper half is unquestionably human, though it too is dotted with patches of shimmering scales.
Its hands are webbed and tipped with sharp looking claws, and its ears look like smaller fins, ridged with spines along the curve of it and flaring up threateningly. When it bares its teeth at them he can see much sharper looking canines than any regular human might have, and the hair on its head is as golden as its scales.
“Satoru, I think it’s injured,” Suguru murmurs, gesturing at the blueish-green smear of fluid that’s welling on its side.
“What even is it?” he asks incredulously, but Suguru is already taking a cautious step towards it.
The creature’s yellowy eyes immediately turn on him and it snarls threateningly, pressing against the side of the boat as if hoping to melt right through it. Suguru raises his hands in an attempt to appear non threatening and crouches down so he’s at eye level with the sea monster, then points to its bleeding side.
“Help?” Suguru points to himself, then back at the injury.
It glares at him contemptuously before jerking away, nose in the air like a child throwing a tantrum. The creature’s skin is a warm tan color but Satoru can see the heated flush on its face and chest even from here, and the sweat that’s starting to bead on its forehead.
Either the heat of the sun is starting to get to it or it is in an enormous amount of pain.
“Help,” Suguru repeats, taking a cautious step towards the fish beast.
Their head whips towards him and regards him warily, but it doesn’t move when Suguru takes another step, and then another.
“Suguru,” he says softly, pointing to himself. “Suguru help?”
The fish creature rolls its eyes.
“I speak your language,” it says finally and Satoru nearly passes out with shock.
His Japanese is heavily accented but otherwise comprehensible. Satoru wonders if he’s just having a very vivid dream whereas Suguru actually has the presence of mind to look embarrassed.
“Sorry. You’re just the first… You, that we’ve ever encountered?” Suguru points out and the creature’s puffed up attitude deflates ever so slightly.
“Nanami. I am Nanami.”
A Japanese name even. Satoru approaches it– him, with unbridled interest, studying him even as Suguru retrieves their first aid kit.
“How did you get injured? And why are you so close to shore?” he asks curiously, itching to touch the scales of his tail now drying in the blazing sunshine overhead.
Nanami grimaces and looks away, out towards the horizon where seagulls are swooping in the air in search of food.
“Attacked by my own kind seeking me as mate. I did not wish to mate with him, but he would not take no. He injured me to stop escape, but I got away. I knew he would not look inland, and I hoped to pull myself ashore to heal before I got caught in… torture device,” Nanami complains, plucking at the web of netting he’s still sitting on top of.
He’s growing paler the longer they remain there talking and when Suguru touches his injury he hisses, gripping his side as fresh blood begins to well up. The last thing he does before he finally passes out is look up at them, golden eyes hazy and shadowed with pain.
“Please help me.”
And then he’s slumping sideways, sending them both scrambling.
Thankfully he’s just unconscious from the pain and not dead, but he is heavy. It takes them a while and a lot of grunting and complaining to carry him to shore, and they end up putting him in the small wagon they typically use to transport their catch back to the house to drag him down the narrow worn path and towards their home.
They lay him on a shallow sandbar at the mouth of the small cove and Suguru carefully stitches up the deep cut in his side with practiced ease. He’d been a doctor back in the city before they left and thankfully it looks like there are no internal injuries beneath the gash.
“Would it be rude to ask if I can give him a physical?” Suguru hums, brushing curious fingers over the ripple of scales between Nanami’s human and fish halves. “He’s beautiful, Satoru.”
Satoru privately agrees. Now that he isn’t terrified and snarling at them it’s easier to admire the high cheekbones and sharp jawline of their unexpected guest. His chest and shoulders are broad and freckled from the sun, with a soft, scale spotted belly and narrow waist tapering down to the shimmering scales of his lower body.
“The scales are changing colors,” he comments, unable to resist the urge to run his palm down the length of Nanami’s tail.
The scales beneath his touch change from spotted gold to a brilliant, iridescent sky blue, and he finds himself enamored with the smooth texture of them. For some reason he thought the scales would be slimy like a fish’s, but they feel more like the dry, soft scales of a snake.
“We should let him rest for now. I’m sure he’ll be hungry when he wakes up anyways,” Suguru sighs, making sure the soft, ridged gills on Nanami’s throat are beneath the surface of the water before he steps back.
It seems like he can breathe both in and out of water, but they agree that this is the best thing they can do for him at the moment until they know more.
They bring the wagon back to the trawler and collect up as many of the fish and crabs they can still find, then return to the house with them. Satoru guts and cleans the fish while Suguru sets about boiling the crabs for their dinner, and for a moment it’s almost easy to forget their unexpected companion.
It’s dark by the time they finish eating and Satoru takes a plate out with fish, rice, and a single apam balik that Suguru had insisted he bring to Nanami. He’s pretty sure their guest is a strict carnivore but caves anyway, carefully picking his way out to the cove where they’d left Nanami.
He must have woken up sometime since they left him there because he’s not there anymore, but when Satoru approaches a head slowly rises out from the water, studying him curiously with golden eyes that shine in the lamplight from their house.
“I’ve brought something for you to eat. We weren’t sure what you’d like or what you could even eat but, there’s some cooked fish, rice, and, ah…” Satoru struggles to find a comparable word in Japanese to describe the last thing.
“Sweet egg pancake? It has peanuts and corn, but please don’t feel obligated to eat it if you don’t like it.”
Nanami just continues to stare at him wordlessly, clearly still suspicious of them and their intentions. Satoru puts the plates down by the shoreline for him instead, cocking his head when the fish creature’s tail fin flaps slightly in the water behind him.
“One of us will come back with more food for you tomorrow. And Suguru will want to check your injury and make sure it isn’t infected, if that’s okay. You should be safe here though. This cove is isolated from the rest of the ocean except for a small, extremely narrow underground passage that feeds it. Barely big enough for even a fish to swim through, nevermind something your size. No one will be able to find you here while you heal, if you wish to stay.”
More silence. The clouds pass by overhead and soft white moonlight bathes the cove in an eerie glow, casting Nanami’s face in sharp shadows.
“Okay… I guess I’ll leave you to it then. Uh, yell if you need anything, and we’ll do our best if we’re able to hear you.”
Satoru’s dreams are full of the smell of the ocean that night, and the bright, beautiful shine of gold. Endless blue sky stretches to the horizon forever and the feeling of the wind in his hair is like a balm to his soul.
He wakes to the sound of his name being called in a voice that his soul knows, even if he himself cannot recognize it.
Suguru is already up and seated outside by the cove, smiling serenely at Nanami while he glares back at him with all the righteous fury of a cornered cat.
“Any luck?” Satoru snorts, peeling his shirt off and dropping it wordlessly onto the shoreline beside Suguru.
He likes to go for morning swims and he’ll be damned if some strange, ungrateful fish man is going to ruin that for him. Nanami watches with increasingly wide eyes as Satoru strips, then disappears entirely when he steps onto the sandbar and into the water.
“Was that necessary?” Suguru sighs heavily, raising an eyebrow at Satoru when he snorts and wades in deeper.
“He’ll have to get used to it eventually. Besides, this is technically our cove, he’s just hanging out for a while.”
Satoru dives beneath the surface and back strokes his way across the open water, wondering if Nanami is going to take his chance to pull him under and drown him as thanks for saving his life. The plates on the shoreline had been clean at least, so either Nanami ate the food they gave him or some local wildlife found it.
He turns over to start swimming back to the other side when suddenly Nanami’s head pops up out of the depths, making Satoru gasp and then immediately regret it when he inhales a bunch of water. Nanami watches impassively as he chokes it all back up, blinking at the angry stare Satoru fixes him with.
“Do you need something?” he demands dryly, treading water impatiently while Nanami just stares at him.
“Sweet pancake,” Nanami finally says, frowning when Satoru looks confused. “I liked… Sweet egg pancake. Thank you for food.”
Satoru is curious now. Apparently whatever species Nanami is must be omnivorous like a human then. It also gives him an idea.
“Suguru wants to give you a physical examination, if you wouldn’t mind. He was a doctor before we came here, and he’s interested in your body. And he wants to check your injury and redress the wound. Would you permit him this in exchange for more sweet pancakes, perhaps? We’ll feed you of course even if you say no but… He would very much appreciate the chance to learn more about you. We both would.”
Nanami regards him warily and when he disappears beneath the water Satoru worries that he’s upset or angered him, but then Nanami resurfaces again closer to shore, and Satoru realizes this is his silent way of agreeing.
He doesn’t bother dressing for his return to their home. There’s no one around to see him except Suguru and their inhuman guest, so he’s comfortable staying naked while he stacks a couple apam balik leftover from the night before on a napkin and returns to the shoreline. Suguru has also undressed by now and is standing waist deep in the water, eyes shining with excitement as he explores Nanami’s body with his hands.
“His injury is healing at a remarkable rate, Satoru,” he says excitedly, showing him the pink line on Nanami’s side where an open, gaping wound had been only hours before.
Satoru slides into the water with them and offers Nanami one of the apam balik, amused when Nanami immediately makes a soft, trilling noise and takes it from him. It sounds like the chirping of a particularly happy cat.
Suguru explores the webbing between Nanami’s fingers, and the strange, glittering scales that make up his body. The golden black color is almost completely gone now, replaced with brilliant, shiny blue. He makes a curious noise when his palms glide over the front of Nanami’s body, dipping his fingers into a slit he finds between the scales.
Nanami grunts around a mouthful of pancake but Suguru is too deep in his medical mind now to even notice, delving further inside this newly discovered area of Nanami’s body with three of his fingers. Satoru notices though. He sees Nanami’s eyes go wide and the pink heat rising in his face the longer Suguru massages at his insides, and the way he shivers when Suguru twists his fingers and explores.
“Suguru!” Satoru protests, snatching at Suguru’s wrist to yank his hand away from Nanami.
His fingers come out covered in a clear, viscous fluid and Suguru finally realizes what he’d been doing when Nanami sighs and relaxes again.
“Oh. Oh, god, I’m so sorry, Nanami. I got carried away and I didn’t realize that was your–”
What exactly was it? Satoru isn’t quite sure. Nanami stares up at both of them with an embarrassed flush on his cheeks and covers his slit with a palm, chest heaving as he catches his breath.
“It’s not what you think it is. This is my… There is no word for it in your language. But when my time comes I will lay my eggs from here, once they are fertilized. What you’re thinking of is…”
Nanami slips his hand a little higher, nearer the apex of where a human may have had legs, and presses against another slit that Suguru hadn’t noticed.
“I have two. One here and one… behind? It is difficult for my kind to conceive, so we mate with many partners at the same time to increase chances of fertilization.”
Suguru looks absolutely fascinated, reaching out towards Nanami before pausing and remembering where he is. Nanami regards him for a long moment, then looks at Satoru expectantly. Satoru hands over another apam balik without a word and Nanami leans back again, bringing the pancake to his lips with a satisfied expression.
“You may touch, if you wish.”
Satoru watches with mingled disgust and curiosity as Suguru immediately runs his hand over the slitted folds of Nanami’s… whatever it is. He uses his fingers to spread him open and, at least to Satoru, despite the scales on the outside, it looks remarkably like a human vulva.
“How do you excrete waste?” Suguru asks with bated breath, dipping his fingers inside of Nanami’s cunt to probe at slick flesh.
“We have… near our fins? Ahh… tubes, is the word,” Nanami answers, twitching when Suguru buries three fingers inside of him up to the knuckle.
Satoru is tired of being a bystander at this point.
“You said you had a secondary entrance?” he chuckles, sliding an arm beneath Nanami’s floating body to rub at the scaled flesh of his lower half.
He knows he finds it when Nanami makes a soft little gasping sound, and when he delves a finger inside of him he can see why Suguru can’t help himself. Nanami’s insides are hot and velvety soft, giving way beneath his touch with ease. Nanami drops the remains of his pancake in the water and grabs at Satoru’s elbow, clawed fingers digging in as Satoru turns one finger into four.
“Do you want us to stop, Nanami?” Suguru asks in a low murmur, sliding his free hand up to massage around the outside of his slit.
Nanami shakes his head, arching up into Suguru when he starts to piston his fingers inside of him. Not to be outdone, Satoru matches his pace with his own thrusts, dazedly wondering what Nanami’s tight, wet insides might feel around his dick. Nanami’s claws pierce his flesh to draw blood and Satoru shudders as Nanami’s pupils dilate and he yanks Satoru’s arm towards him with a frenzied growl.
He laps at Satoru’s blood like it’s the finest wine, body clenching around their fingers before his fangs flash and dig into his flesh. The water around them goes cloudy with Nanami’s orgasm and Satoru realizes rather distantly that he’s hard as a rock himself now.
“More… I want more,” Nanami snarls, throwing his arms around Suguru and dragging him downwards against him. “I need more!”
He sinks his fangs into Suguru’s shoulder and licks at the fresh blood he draws, hissing and spitting like an enraged animal when Satoru fumbles them both higher up onto the sandbar.
“We’ll give you more, just relax,” he warns, forcing him onto his side so he and Suguru can sandwich him between their bodies.
He was right about Nanami’s body feeling perfect around his cock. It practically sucks him in with its tight heat and when Suguru groans Satoru knows he agrees. Nanami shudders between them but the feral edge has waned from his behavior at least, though he returns to licking the blood on Suguru’s shoulder.
“Is that what you wanted, baby? You want us humans to breed you up real nice?” Satoru croons in his ear, pressing a hand between him and Suguru to find the slit of his other hole.
It’s got a rougher texture on the inside compared to the walls of Nanami’s cunts. Satoru fucks his fingers into it while he and Suguru fuck their pretty mermaid, swearing under his breath when Nanami grabs at his free hand and brings the bleeding wound on his forearm back up to his lips to suckle.
Maybe he is a carnivore after all.
Satoru loses track of time for a while in the hot, wet clench of Nanami’s body. He pulls his fingers out of Nanami’s slit and brings them to his mouth, tasting the strange, sour-salty slick that clings to them. It makes him feel a little dazed, like the time he had a kidney stone and the doctor gave him morphine for the pain, and he licks up more of it with a satisfied little grunt.
Suguru kisses him over Nanami’s shoulder and chases the taste from his tongue, making a starved little sound when he can’t find enough of it to sate himself.
The water churns around their bodies as they plunge in and out of Nanami, matching their tempos so they bury into him at the same pace. Nanami himself is limp between them, blood smeared on his face and eyes rolling up with pleasure.
And then Satoru buries himself in Nanami’s guts one last time and cums, deep and hard with a wet, ragged cry.
It takes a few moments for Satoru to come back to his own mind and realize what they’ve just done. He moves to pull out of Nanami but finds a webbed hand on his hip to prevent it, grunting when Nanami’s insides ripple and clench around him.
“No, no, not yet.. Have to wait,” Nanami whines, rubbing his cheek against Suguru’s wounded shoulder to smear his blood against his face. “Wait for seed to take.”
Satoru panics at that and tries to pull out again but Nanami’s claws dig into his skin threateningly.
“Wait.”
So they wait. Suguru stares at him from over the top of Nanami’s head and they try to wordlessly figure out what on earth just happened. Satoru winces when Nanami’s mouth finds his injured forearm again but lets him lap at the blood because it seems to make him happy. Strangely enough, the more Nanami licks at it the less he feels the pain.
It feels like an eternity before Nanami’s body releases them. Satoru pulls back with a shocked noise, watching as Nanami rolls onto his back with a pleased, sated look on his blood smeared face. He has his hands over his belly, stroking it while he makes those same pleased, purring little trills from before.
“Nanami… What just happened,” Suguru asks quietly, almost fearfully.
Nanami yawns and rolls over onto his front like a preening cat, arching his back before curling up on the sun warmed sandbar with his tail in the water.
“Mating. Eggs needed seed to fertilize. My apologies, I did not realize my slick would have an aphrodisiac effect on humans too. Thought only worked on my kind,” Nanami hums, peeking one eye open at them.
“Needed blood to make mate bond for seed to take. Will need more, for eggs to grow strong.”
Satoru sits down heavily on the sand and tries to wrap his head around that.
“Eggs? Mate bond?” he echoes distantly, staring at the water lapping around his ankles.
“Nanami, are you saying you’re pregnant? Because of us?” Suguru wheezes, sounding like he just got punched in the gut.
Nanami makes a pleased sound and rolls over again, rubbing at the soft, flat expanse of his belly.
“Eggs will grow in here. Most, not fertilized, but some will be. Will still be in season until after full moon though. Maybe… twenty days, then I will lay eggs in water to finish growing and hatch.”
Satoru doesn’t need to ask what that means. He feels nauseous and he buries his face in his hands, only to feel a hand prodding at his side. He looks down and sees it’s Nanami, and when he notices Satoru looking he smiles and makes a gimme motion.
Wordlessly, Satoru passes him the last apam balik and watches him devour it in a few happy, hungry bites.
He trudges back up to the house with Suguru once they regain their strength enough to move. There’s a haze over his brain and he feels dizzy, grunting when he sinks down into the blessed softness of their bed.
Suguru looks dazed as well and when he slides on top of him Satoru realizes quite distantly that they’re both still hard, dicks smeared with Nanami’s aphrodisiac slick. He shoves Suguru onto his back and fumbles between their bodies to find his hole with his aching cock, dragging a startled growl out of Suguru when he begins to press inside.
The slick eases the way despite the lack of prep, not that Suguru even seems to notice or care if he’s feeling any pain. Satoru kisses him hard and they fuck with a sharp edge of desperation, clinging to one another as the unbridled arousal caused by the aphrodisiac courses through their bodies. He’s not sure how many times they fuck. He’s cumming dry by the time he finally feels sated, staring blankly up at the ceiling while they finally come down from their high.
“We fucked a mermaid,” he says numbly, chest heaving as he catches his breath. “We knocked up a mermaid.”
Suguru’s laugh is slightly hysterical.
“We’re mated to a mermaid, apparently. Whatever that means.”
They fall silent for a while, and Satoru considers their options. It’s not like they can tell anyone they fucked a mermaid. At any rate, Satoru doesn’t even want to tell anyone. He likes the idea of Nanami being their little secret.
“Did we know anyone back in Japan that looked like him? Only… Sometimes I get the strangest feeling, like he’s someone I’m supposed to know,” he murmurs, turning on his side to look at Suguru.
Suguru rolls over to look at him, and Satoru isn’t sure he’s even surprised that the bite wound on his shoulder has healed. All that remains now beneath the crusted dried blood is a dark, claiming scar. Similar to the matching one on his forearm.
“I know what you mean. I’ve been trying to remember but… I can’t.”
Satoru sighs, running a hand through his hair.
“I’m going to go to town to pick up supplies. He likes the apam balik you made last night, but we’re out of sugar and eggs. I think, if we’re going to, ah… Take responsibility, I guess, for impregnating a mermaid, the least we can do is feed him things he likes. Do fish people need prenatal vitamins?”
_____________________________
Suguru admits that despite his desire to have the same cool, analytical mindset as his doctor colleagues back in Japan, he’s an emotional sort of person at the end of the day. It’s what brings him back to the edge of the cove after Satoru has left for town, bearing a cooked fish on a plate for Nanami.
He’s still lounging in the afternoon sunshine and when he hears Suguru approaching he peeks a lazy eye up at him, tail flapping idly in the water.
“Suguru. Apologies if upset. I know for humans this process can be… difficult, sometimes. Adjustment period.”
Suguru sets the plate down on the shore and then wordlessly begins to undress, drawing an intrigued noise from Nanami.
“I’m still curious about your anatomy. I got distracted early, but I want to touch you more if that’s okay,” he murmurs, slipping into the water to kneel in the sand beside Nanami’s tail.
Each silver-blue scale is glinting in the sunlight, brilliant and beautiful.
“We are mates now. You may do whatever you please,” Nanami explains, sitting up slightly to draw more of his tail out of the water for Suguru.
Suguru trips his fingers over soft scales, careful to avoid his openings this time lest he get distracted again. He’s not even sure he’s physically capable of getting it up at this point after how many times Satoru made him cum.
“You said you excrete from near your fin,” he hums, exploring the base of Nanami’s tail until he finds a small opening at the nexus where his tail meets the sharp spines of his fin.
Nanami’s breath hitches slightly and he nods, expression twitching when Suguru rubs his fingertip across the small, round hole of his urethra.
“The food we digest is broken down… what we cannot digest becomes liquid and leaves from there.”
He seems to get more and more heated the longer Suguru massages at it, and he wonders if it feels as good as when Satoru teases the slit of his cock. He pulls Nanami’s fin from the water and leans down to lick at it experimentally, watching as Nanami’s face twists in obvious pleasure.
Now that the initial shock of what happened earlier has worn off, Suguru just finds himself… incredibly aroused by the idea of Nanami, and having their own needy, desperate mermaid all to themselves.
“Has anyone ever touched you like this before?” Suguru asks quietly, smirking when Nanami shakes his head.
“First time… for all.”
Suguru is stunned by that. He doesn’t need to ask what that means, not when Nanami is looking at him like that. He and Satoru took a mermaid’s virginity.
What a day.
He lowers Nanami’s fin back into the water and straddles it, looming over him while Nanami just regards him warily. Satoru won’t be back for another couple hours, why not show their guest a fun time?
“You’re so pretty, Nanami… Has anyone ever told you that?” Suguru murmurs, lying his weight on top of him so he’s at eye level with Nanami’s cunt.
He dips his fingers into the velvety folds again, shivering with excitement when he feels that same soft, wet heat. He’s never felt anything like it. When he twists his wrist and curls his fingers up along the top side of Nanami’s cunt he can feel rippling, spongey ridges, smirking when he finds a small, hard bump near the outside that makes Nanami gasp.
Suguru scissors his fingers to spread Nanami open and then leans in to lick between them, tasting the salty sour flesh of his insides. Nanami’s clawed hands bury in his long hair, pulling it free from the tie until it falls around his head like a curtain.
“Gonna lick you until you cum and then I’m gonna breed you again, Nanami… Is that what you want? For your mate to stuff you full of cum and breed you?” he growls, pressing his lips against the scales around his cunt before fucking his tongue deep into him.
He can feel the aphrodisiac starting to take effect, tingling through his bloodstream and beneath the surface of his skin, worsening with every passing second Suguru has his mouth on him. He uses the thumb on his free hand to rub at Nanami’s little clit as he devours him, uncaring that Nanami is clawing desperately at his shoulders, or about the rough scrape of his scales as Suguru ruts his now swollen cock against his tail.
He strokes his tongue along the spongy, sensitive ridges in his cunt and groans when Nanami cums with a scream, squeezing around his tongue as he soaks his chin and chest with bitter cloudy fluid.
He licks up as much as he can and then sits up, crawling up the length of Nanami’s body to kiss him for the first time. His mouth tastes like blood and sugar, and Suguru eagerly laps the flavor from his tongue, guiding his cock to Nanami’s pussy and fucking inside with a snap of his hips.
Nanami sobs, clinging to him when Suguru sets a brutal pace from the start. It’s easier to be rough with him now, when he can dig his knees into the sand on either side of him and truly pound into his body. It squelches and slurps around him and Suguru groans when Nanami sinks his teeth into the juncture of his neck and shoulder again and greedily drinks the blood that wells up on his skin.
“Suguru… Suguru!” Nanami cries out, tail fin thrashing in the water beneath him. “Mate!”
Suguru’s orgasm is pure bliss. He isn’t sure if it’s the restorative properties Nanami’s bodily fluids seem to have, or the affects of the aphrodisiac in his slick, but Suguru feels like he’s cumming forever. He empties himself deep into Nanami’s body, finding his mouth again in a bloody, messy kiss that makes Nanami tremble.
He lies there while he comes down from the high and takes the opportunity now to explore more of Nanami’s body.
The webbing of his spined ears is soft and very delicate. When he rubs it between his fingers, Nanami shivers and whines at him. His mouth, swollen and wet now from how harsh Suguru’s kisses were, is mostly human besides the sharp, pointed canines he most likely uses to rip apart fish and other creatures to feed, when he isn’t ripping holes into Suguru and Satoru.
His eyes have settled into a soft hazel-brown now, and Suguru wonders if the gold color is to signify when he’s “in season” as he puts it and fertile.
“You look so familiar,” he murmurs aloud, trailing his thumb along the high arch of Nanami’s cheekbone and over the patches of scales around his hairline.
“I wish I could remember how I know your face.”
Nanami says nothing, but when Suguru is finally able to slip out of him he looks reluctant to let him go. Suguru is reluctant too, especially because his cock is still aching and hard from the aphrodisiac.
“Mmm, well. If I want to be sure my seed took, I suppose I should also breed you from the back,” he teases, helping Nanami to roll over onto his belly.
That’s where Satoru finds them later, with Nanami bent over the shoreline and Suguru fucking into him from behind. Satoru has an amused look on his face when he sits on the edge beside them, petting his hand over Nanami’s hair as he gasps, red faced and drooling, into the grass.
“You had fun while I was gone then,” he snorts, raising an eyebrow when Suguru looks up at him.
“You should hear the noises he makes when you eat him out,” Suguru chuckles darkly, pleased when Satoru’s eyes widen slightly. “Tastes so good, Satoru. Feels so good. I could spend the rest of my life breeding our cute little mermaid.”
He fucks deep into Nanami and cums, dragging a needy little wail out of him. Suguru wraps a hand around him and finds his second cunt with now practiced ease, fucking his fingers inside the loose, dripping hole to find his little clit. All it takes is a few strokes and Nanami cums too, clawing weakly at the sand.
“I think he’s finally satisfied… Took long enough.”
Nanami is fucked out enough now that Suguru can withdraw from inside of him with ease, leaving him to sprawl limp and trembling in the sand. Suguru washes himself up and heavily sits beside Satoru, feeling absolutely drained but surprisingly also… refreshed.
“If we hadn’t knocked him up before you certainly did now,” Satoru laughs, rummaging through the plastic bag he’d brought to shore with him and withdrawing a small paper package.
He unwraps it and offers a small, brown treat cake to Nanami, who looks dazedly up at him with teary eyes. Satoru chuckles and presses it to his lips, helping him take a bite.
“It’s called nian gao. It is… fried rice cake, with sweet potato and yam, I think?” Satoru explains to their tired guest, handing Suguru one as well before giving Nanami another bite.
“There was a vendor outside of the grocery store, and you seem to like sweets so I thought I’d bring some home for you. Do you like it?”
Nanami nods, reaching up to grip at Satoru’s wrist when he tries to pull away so he can lick the sugar and grease from his fingers. It makes Suguru want to fuck him again.
But he doesn’t. Neither does Satoru.
They leave Nanami in the cove with the fish Suguru had brought down for him earlier, and change his empty plate out for a full one of cooked chicken and vegetables that Satoru had gotten in town. He’s pretty sure Satoru goes down sometime in the night to see him, but Nanami must be sleeping or somewhere deep beneath the water because he returns not long after.
Suguru dreams of a giant ship and the tang of salt in the air.
_____________________________
Their life has become somewhat of a comfortable routine. The effects of the aphrodisiac in Nanami’s slick become less and less extreme as their bodies adjust to its effects, but the demands his body makes of its mates do not abate by even a fraction.
His appetite increases on the daily as well. Normally, they would trade their excess catch in the village for the other goods they need, but much of what they bring in now goes to feed their voracious companion. His belly grows and when Suguru asks him about it he just smiles happily and strokes it, murmuring about his eggs being strong and healthy.
Satoru kind of likes it. Especially when he presses kisses to Nanami’s belly and their mermaid squirms.
He’d never really considered the idea of children before. Neither he nor Suguru could have their own of course, and adoption was out of the question in a country like Japan. But now that the reality of their situation is becoming more and more visible, it’s starting to become easier for Satoru to accept that he is, in fact, going to be a father.
At least to some degree. He’s not sure how fish people raise their young.
He has Nanami all to himself today. It’s Suguru’s turn to go into town so Satoru slips into the water on his own and starts to breaststroke across it, waiting patiently for Nanami to come find him when he’s hungry. A head pokes out of the water and soft hazel eyes blink at Satoru, looking happy to see him.
He’s been with them for about ten days now and Satoru will never get used to the strange sense of dejavu that overtakes him every time he sees Nanami.
“How are you doing today, Nanami?” he asks sweetly, reaching out to rub his hands over the bump of Nanami’s belly.
Nanami makes a regretful sound and frowns, burying his face in Satoru’s shoulder.
“Hungry. Babies… hungry,” he complains, shivering when Satoru laughs and rubs a hand up and down his spine to soothe him.
“Then eat, Nanami. Suguru will be back from town in a while and he can help.”
He winces when Nanami immediately sinks his canines deep into his shoulder, eyes sliding shut to relax while his apparent vampire-mermaid mate feeds from him. He needs the iron in their blood, he explained at some point. From his mates. It helps the eggs grow and develop into healthy embryos, and sustains Nanami himself better than blood from animals or other humans.
Satoru curls his arms around Nanami’s body and tugs him flush against him in the water before guiding his cock inside his cunt, grunting at the tight, velvety heat. Floating in the deep end of the cove like this, Satoru cannot do much, but Nanami undulates his body easily with powerful thrusts of his trail. He fucks himself onto Satoru’s cock at the same time he sucks at his shoulder, whimpering and moaning like he’s never tasted anything so good.
Nanami’s belly presses between them and Satoru rubs his hands over it, and over his hips, stroking the line where human flesh meets scales.
“Want… Under,” Nanami whines plaintively, grabbing desperately at Satoru’s upper arms.
He knows what Nanami wants. Suguru refuses to do this with him, but Satoru used to be a competitive swimmer back in his high school days. He sets the alarm on the little divers watch he’d picked up in the village and then taps it, reminding Nanami of their agreement.
“Two minutes, baby. And then you have to bring me back up for a minute before we can go back down again.”
Nanami nods his understanding and waits for Satoru to take a few deep practice breaths, then immediately pulls him under the surface the instant Satoru hits the button to start the timer. The cove isn’t very deep, not more than ten or fifteen feet at its absolute deepest, but it always feels like a hundred feet when Nanami pulls him to the bottom and wraps him up in his arms to fuck himself on Satoru’s cock.
Satoru does his best to let Nanami do most of the movement to conserve his oxygen, opening his mouth to allow sea water, and Nanami’s tongue, to fill it while keeping his throat blocked. There’s something about the thrill of being entirely at Nanami’s mercy and used as a toy for his pleasure that Satoru likes, and he’s almost disappointed when the alarm sounds and reminds him of the growing ache in his chest.
Nanami brings him back to the surface and he gulps down a few lungfuls of fresh air, spitting out his mouthful of seawater. He resets the timer, breathes in deep, and down they go again, all the way down until Satoru’s back is against the sandy bottom and Nanami’s heavy body is pressing hard on top of him. Maybe it’s just Satoru’s oxygen deprived imagination but Nanami’s pussy feels even tighter when they’re fully submerged, and he wraps his arms around the mermaid to find his other cunt and plunge his fingers inside of it.
The water does little to muffle Nanami’s scream of pleasure and when he sinks his sharp teeth into Satoru’s throat it makes him choke, nearly flooding his lungs with sea water. On and on the fuck like this, resurfacing long enough for Satoru to catch his breath before plunging back down to the depths for more. His head swims and his ears pop, but the hot clench of Nanami’s body remains as pleasurable as ever.
He spreads his legs wide around Nanami’s tail and does his best to meet his powerful thrusts, feeling his orgasm barreling down towards him.
Nanami’s body seizes up around him and Satoru cums hard, flooding his insides just as Nanami climaxes and turns the water around them cloudy.
His watch blares and Satoru taps at Nanami, staring at him through the stinging sea water as something akin to regret shines in his eyes. He wants to stay under the water with Satoru.
But he takes him to the surface anyway, and Satoru gasps with relief as air fills his aching lungs. Nanami is pouting but one kiss from Satoru is all it takes to soothe that away, especially when he starts to stroke at his belly again.
“I’m happy we found you that day,” he admits, smirking faintly when Nanami seems embarrassed. “Our cute mermaid… Will you stay with us, even after the eggs hatch? Or will you go back to your kind?”
Nanami blinks owlishly at him with a moment and then shrugs, leaning in to lick at Satoru’s bleeding throat.
“Can’t go back. Was promised to Sukuna, the leader of my… clan? But I refused him. He will kill me if I go back. Especially if he finds out I’m mated to humans.”
Something about that makes Satoru happy and sad. Happy, because it means that Nanami will probably stay with them, but sad because it also means Nanami is trapped with them.
“I’m sorry, Nanami. I wish I could turn you human. Or that we could turn into your kind, so we could protect you better and make you happy.”
Nanami smiles and nuzzles against his wet skin, making soft, pleased little chirps.
“I am happy. With Suguru and Satoru. I like cove, and being with my mates. Soon eggs will come, and babies will be born. Most… will just be empty. But some may be human, or fish people as you say. I hope babies are human, so they can stay on land with Suguru and Satoru,” he sighs, sounding content.
He convinces Suguru to sleep by the edge of the water that night. They set up their mosquito net and sleeping bags, and Nanami curls up on the sandbar next to them, golden eyes shining in the moonlight.
It won’t be much longer now before the full moon.
_____________________________
Nanami likes a great many things. He likes the ocean, and riding the currents after a big storm. He likes the taste of fresh fish, and the crunch of little bones beneath his teeth as he eats them whole. He likes his mates a lot, and the babies they put in him. He likes the sweet treats they bring him and the tanginess of their blood as it fills his belly.
He likes the dreams he has where he sees their faces, and the weight of their bodies on top of him when they fuck him.
The height of the full moon night is only a few hours away though, and Nanami very much does not like the way that neither of his mates are here with him right now. They had both gone to town to stock up on supplies in case they weren’t able to for a few days while Nanami was indisposed, and now it is dark and they still have not returned.
His tail has been aching all day and there’s a persistent, miserable itch beneath his scales that Nanami cannot satisfy no matter how hard he scratches. He screams in misery and thrashes upon the sandbar, kicking up water and sand around him until the cove begins to grow cloudy.
This doesn’t feel like the pain of egg bearing that was described to him by his birth giver. He wants to see Satoru and Suguru.
He wails for them, shrill and keening, but they are not fish people, so they cannot hear him in their soul like they would if they were like Nanami.
There is someone that hears him however. Nanami can see him, enormous and imposing, standing at the edge of the cove in the light of the moon and sneering with triumph.
“I’ve found you,” Sukuna snarls in their language, rough and guttural.
Nanami knows that certain members of their species can turn their fins into legs at will. Sukuna, as an older, powerful leader of their species would be able to change between human and fish form at his leisure. Nanami does not have that ability, which is why he had hoped coming inland might prevent Sukuna from searching for him here.
The small, underwater inlet that feeds the cove must have brought his scent out to sea.
“No! No!” Nanami screams, shoving his hands at Sukuna and clawing his chest.
But he is weak from the pain and the contractions rippling through his body, and when Sukuna grips his tail fin and pulls he can feel his body rip like Nanami would shred a jellyfish with his fangs. The pain is agonizing, but there’s also a strange sort of relief as the building pressure in his lower body suddenly releases.
“You… You mated with a human, you whore,” Sukuna swears and when Nanami blinks open bleary eyes he can see the remains of his tail fin clutched in Sukuna’s hands.
He looks down and expects to see a gorey mess but instead he just sees… legs. Human legs, albeit still covered with scales. His stomach cramps up and he shrieks, struggling to make his new legs work even as Sukuna hisses.
His own thick, powerful tail thrashes in the water when he changes back, and Nanami sobs when his heavy, dripping cock slips out of its sheath and presses against his thigh. Sukuna snarls, claws digging into his belly as he grinds it against the slit between his legs.
“I’ll drag you back out to sea and force you to change back myself. All you’re good for is breeding and now I’m going to fill you with my own clutch and make you mine,” Sukuna laughs, shoving him down into the sandbar.
“No!” Nanami shrieks in the human language he uses with his mates, clawing at Sukuna’s shoulders even as he forces himself between his thighs. “Not yours! Never yours!”
“Hey!”
Suguru’s enraged voice fills the air and Nanami sobs when he suddenly splashes into the cove, swinging his fist hard and knocking Sukuna off him with an unpleasant crunching sound. Satoru is beside him in an instant brandishing a heavy stick, and when Sukuna surges towards him he brings it around and smashes him on the head.
Sukuna goes down this time and stays down, and Nanami screams as a fresh wave of pain washes over him.
“Nanami, you have legs?” Suguru asks incredulously, shoving Sukuna’s body away with his foot before he and Satoru drop to their knees beside Nanami.
“Eggs… Babies, coming,” he whimpers, clinging to Satoru’s arms as his belly contracts. “Mates… Not here!”
Satoru hushes him gently, cradling his body to his chest as Suguru starts to massage against his stomach. He’s rubbing his hands downwards, helping the eggs to move through his body the way Nanami taught him.
Once the first egg, soft and jelly-like, slips from his body, the rest follow with far more ease. Suguru gathers them up in his jacket like the precious cargo they are, and Nanami relaxes when the pain finally subsides. The worst of it seems to have been from the changes his body undertook to transform into a human, and when he looks up tearily at Satoru he smiles, reaching up to cup a no longer webbed hand against his cheek.
“I know you.”
Satoru smiles back and cradles his palm against the back of his hand, brushing his thumb in gentle circles.
“I know you, too.”
Suguru huffs out a laugh and runs his fingers through Nanami’s hair, gentle and warm.
“Kento…”
A long time ago, there lived three pirates who sailed the oceans of the Caribbean with their crew. They plundered up and down the coastline, hoarding riches beyond measure. Nanami Kento was the Captain’s name, and his two first mates were Suguru and Satoru. They loved the ocean and the freedom it gave them to be who they were, without fear or limitations.
Nanami was always careful to make offerings of their captured wealth to the sea, but his crew did not like it and saw it as a waste of their hard work. When Nanami refused to cease his actions, he and his two first mates were thrown into the sea as the one and final offering to the goddess.
For his generosity and steadfastness, Nanami and his two lovers were rewarded with a second chance at life. But she’s also a goddess and therefore a fickle thing, and so they were set upon different paths of life, and Nanami, as one whose soul truly belongs to the ocean, was reborn as one of her favored children beneath the waves.
“Fate brought you back to me,” Nanami whispers, burying his fingers in Suguru’s long hair and pulling him down to kiss him.
It tastes like salt water. Satoru helps him sit up and he winces as his lower body protests, still covered in flaking scales and weak from the transformation. He’s relieved to see that Sukuna’s body has already started to dissolve into sea foam, signaling that he truly is dead from the blow Satoru struck.
He makes a disgusted face.
“Take him out of my cove. I do not want his stink ruining our home,” he complains, taking his small clutch of eggs from Suguru and cradling them protectively against his chest.
There’s eight in all. Nanami carefully inspects them, noting that only three of them are fertilized. He plucks one of the unfertilized eggs out and gives it a cursory sniff, then opens his mouth and swallows it down like his own birth giver had told him to do. It’s salty, but filling, and Nanami sighs with satisfaction.
Satoru makes a shocked sound and drops Sukuna’s body in the dirt, staring at Nanami with wide eyes.
“Did you just eat our baby?” he asks incredulously, unaffected by the annoyed scowl Nanami fixes him with.
“No. Unfertilized egg. Five, not fertilized. Three, fertilized. I consume unfertilized eggs after clutch is laid to reabsorb nutrients back into body,” Nanami complains huffily, plucking another unfertilized egg out and swallowing it down just to make a point.
They’re about the size of a fist, but the soft, jelly texture makes it easy for him to eat them whole. Suguru leaves Satoru to deal with Sukuna so he can sit next to Nanami and watch with morbid fascination as he consumes the remaining unfertilized eggs.
“They’re like fish eggs,” he says curiously, which makes Nanami sigh.
They are, more or less, fish eggs. His human mates are stupid sometimes.
Nanami doesn’t have the strength or coordination to stand yet, so Suguru carries him into their house. It’s a little exciting really. He’s been living in the cove for almost a full month but he’s never been able to see the inside of their home before.
It’s small, but cozy, and Nanami sighs when he’s placed upon their bed and can curl up on his side with his eggs. Suguru fills a large glass jar with sea water from the cove and helps Nanami place the eggs inside it for now, until they can figure out a more permanent solution.
“Kento… Are you okay? Did he hurt you?” Satoru asks softly, sitting beside him and resting a hand on his forehead as Nanami lovingly strokes the glass jar.
“No, I am okay. Eggs okay too,” he answers, blinking up at the two of them.
“Mates late. Should be home much earlier!”
Suguru winces, but he comes bearing a plate of steamed fish and rice for him so Nanami forgives him, mostly.
“There was an issue in town. The wheel on our wagon broke and it took much longer than expected to replace it, and then we had to walk slower because of the dark. We’re so sorry, Kento,” Suguru sighs, running his fingers lovingly through Nanami’s hair.
He shrugs, tapping his nail lightly against the glass jar before frowning up at both of them.
“Mates could… make it up to me.”
Satoru raises an eyebrow but takes the jar from him, carefully setting it on the bedside table where Nanami can still see it but it won’t be in any danger.
“Yeah? Do you think you’re up for that, after what happened?”
Nanami considers, taking inventory of the condition of his body, and then scowls and stuffs a big bite of fish into his mouth with a huff.
“Tomorrow,” he says firmly, whining when they lie down on either side of him and press in close.
Their clothing feels pleasant against his itchy skin and he arches his back, rubbing the scales still stuck to him off on them until they pull and release. It hurts when they separate from his flesh though and he immediately complains, rubbing at the raw, red patch that is exposed beneath them.
Satoru and Suguru take him to their small bathtub instead, filling it with buckets of water from the cove so Nanami can sink down into it and soak. They let him drift and rest while they carefully coax his scales into releasing, and the soothing water makes it much less painful. Suguru scratches the scales off his chest, clearly fascinated by the swell of it.
“Milk, for babies when hatched,” Nanami explains sleepily, turning his face to nuzzle into Satoru’s palm when he cups it against his cheek.
It takes the better part of an hour but Nanami is finally scale free, with new, pink and tender human ears and everything. He sits on their bed wrapped up in a towel and wiggles his toes curiously, trying to get used to the strange sensations and functions of his new body.
They both try to fight him on taking the eggs to bed. It’s a fight they lose, and Nanami curls up quite happily with the jar while Satoru and Suguru have a silent argument nearby about who has to sleep on the side with the cold, clammy glass. It ends up being Suguru, but he doesn’t fuss for long when Nanami immediately tucks his face under his chin and sighs comfortably.
Satoru slips into bed behind him and drapes an arm over both of them, nuzzling his face into Nanami’s hair.
Nanami dreams of the ocean again, but this time he recognizes the faces of the men standing at his shoulders. He smiles at them, and they at him, and with the smell of the ocean in his lungs and the wind in his hair, Nanami knows that he is home.