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aveegrex · 2 years

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MERMAN OSAMU X READER (PART 2)

PART 1 | PART 2 kinktober masterlist

pairing: merman!osamu x reader genre: fluff, smut word count: 2,2k cw: fingering, oral (f!receiving), penetration (f!receiving), a little bit of swearing, heated makeouts, two-dick osamu, virginity loss, somewhat underwater sex, mentions of atsumu and his lovelife. author's note: again, thank you @flycloudddd for your amazing artwork. give her love, my dear reader, and hope y'all enjoy this one too.

“you… you have two?”

osamu’s been persistent. for the past few weeks, he’s been coming to your house every single night. you’ve even learned to detect his presence by the distinctive splash his tail made when he romantically leaned on the pier to watch you run down the porch.

he managed to catch you first on the third night after he shyly introduced himself. blushing and stern, he presented you with the damned ring, membraned hands so careful when placing it on your lap.

on the fifth night, he learnt your name, and for a while it became his “yes”. until he memorised the real thing, that is.

you first heard him speak his language when you slipped on the wet spot, almost hitting your head as you not so gracefully fell into the water. tiny chirps and coos, fused with some very indecent (as you later learned) clicks, and you were caught bridal-style, worry and shock splaying in his eyes right above the blooming cheeks.

by week four, you managed to teach him a good hundred of words, yet he was shy, skittish even when using them, usually opting to listening to you talk instead. he’d only utter a couple of timid phrases when your sleepy eyes fixated on his fin, glimmering under moonlight with soft undertones of gold and aquamarine. a whine about tsumu and his new boyfriend making too much noise, or a babble about how good jellyfish paired up with nori, and sometimes a reluctant question on human habits - he walked in babysteps, but his ears always betrayed him, fluttering under praise.

once, he turned up wearing a thin silver band around his head. unable to keep his wide grin away, he chirped about how atsumu is finally married and moving to the neighboring reef to annoy someone else with his loud mating. you, on the other hand, were too baffled by the absolutely ethereal look of a prince-like samu, and effectively shut him up with a clumsy rushed kiss.

after that, things progressed pretty quickly. a few broken words for the sake of manners, and you two hid in the adjacent cove, lips chasing lips, hands chasing waists and necks to bring the two of you closer and closer. sleepless, you returned home by the dawn, perfecting the way you opened the door to avoid its creaks and squeaks. lovelorn, he swam back to his cave, counting hours till he’d feel your lips mapping out his neck and chest next time.

he probably even forgot some words, but surely learnt a few new ones, worse ones, but these were way better to huff in the midst of swallowing your moans.

your moans, oh, those drove him wild. now the grudge he held against atsumu died down a bit. the moans were the best part, falling from your lips each time his tongue twirled sweetly just above your collarbone. the moans that he bathed in as you were grinding on his tail, placing open mouth kisses up his jaw.

the moans that you let out when his hand accidentally brushed between your thighs. it was so hot there, and so alluring, yet for some reason he felt like he broke some sort of rule by letting his hand there. he glared at you, timid and bewitched, till you pulled his hand back and pushed it under the soft fabric, eyes rolling back the moment his fingers met your slick.

that night he learned that humans love getting wet too.

entranced, he watched as you pushed your panties off and moved his fingers to your liking, snaking them inside just to pull out a second later and circle them around a tiny sensitive bud. the noises you made that night, oh, samu couldn’t forget them to save his own life, imagining them as he humped the pitiful anemone later that day, lips pressed tight as his seed spilled out and your name blazed across his mind.

just as it was with vocabulary, samu picked up on things quickly. soon enough, his skillful fingers were plunging in and out of you by the end of your every date, lips latched to your neck to drink the whines straight from the source. he was a little freak even, shyly suggesting that he’d use his tail, and succeeding with flying colors as gentle tissue of the fin rubbed so deliciously across your weeping folds, working you through the nth orgasm of the night.

being a curious little foodie, samu wanted to have a taste as well, and that was another way for him to fixate on you. he was drunk and hungry, head almost immediately diving between your thighs as you nestled on the stones beside him. strong hands holding your legs apart, little fins fluttering each time another wave of arousal hit him, he lapped and licked and suckled, swallowing all your generous cunt could give. he wouldn’t even stop after you’ve cum twice, his mind hazy of how good the human essence tasted. of how good you tasted, and how feral he felt when your hands clutched onto his damp hair, pressing him into the best place there was above and under water.

his adventurous side finally kicked in when once, caught up in the act, you two didn’t notice you were slowly sliding down into the sea and he ended up overstimulating you completely submerged.

although, osamu never really asked you to return the favor. you weren’t even sure how that was supposed to go, given there were no body parts visible to do so. night after night he’d make you the happiest girl alive, blessing your lips and neck with the most erotic kisses and then tending to your lower needs, but never uttered a single word about his own pleasure.

so tonight, as he was about to repeat the ritual, you caught his head, cradling his puzzled lovesick face in your hands, and questioned him about the details of his anatomy.

“su-sure?” he pouted, membraned hands clutching on your knees nervously. “you’re sm-ch-small”

you nodded eagerly (and a little enthusiastically after that remark), and he lowered his gaze, yanking his lower half out of the water to nestle beside you on the mossy rock. both of you were quite pent up after the hour long makeout, raw lips puffy of all bites and kisses shared. he pulled you beside him, and you were quick to latch on to the sweet spot behind his ear, where scarce scales mixed with thin skin. during the previous night you’ve learned how sensitive he was to touch, how responsive his body was to all your caresses, and used it to your advantage, riling up innocent samu into the whining mess. a ghosting drag of your fingers across his waist, a gentle circle around his nipple, and a dig of your nails into his meaty pec, and he was buzzing already, human swearing babbled up in mush with his coos and clicks.

you were about to repeat the ritual, as he caught your wrist and moved your hand way lower, somewhere just below the root of his tail, and you felt a previously invisible slit there opening up. curious, you’ve broken the kiss, pressing tighter to the spot, and samu’s head felt back. bemused, you did it again, and again, and a few more times again, every touch eliciting a whine out of your seaprince, until something prodded through the opening, quickly gaining in size.

it took everything he got for samu to prop himself up on his elbows and watch your face as two large dicks grew above the scales, light purple and streaming with translucent slick, curved up and thick, with a slightly sharper tip compared to human. samu gulped, watching as your hand stilled beside them, eyes trained on the discovery. he was slowly growing frantic, feeling too open, too on display, too ashamed to ever present you with his physique, but your voice stilled him.

your voice, filled to the brim with thrill.

“you… you have two?”

samu nodded, ears flat against his head and neck, and quickly vocalised. “yes, two” he sounded skittish again, like when the two of you first met. “small a-and /click/ big”

“they’re both big”

for some reason, it helped him exhale, puffy chest heaving with intensity.

“can i…” you finally looked at him and samu blushed under your lustful gaze. “can i ride you?”

“m-mhm” he managed, leading your hand to the base of the upper - smaller - one, and you felt your hole clench in anticipation as your hand barely closed around his girth. osamu barely held in a whine, the softness of your fingers so delicious against his neglected need.

eyes darting between him and his dicks, you attempted a little pump at the base, and he threw his head back, a bubbly gurgle resounding off the rocks. once more, a little tighter, a little longer, and his tail twitched, mouth hanging open in search for air.

he looked so good like this, so easily manipulated into the prettiest mess. unlike when he was pleasuring you, here he lost all focus, fingers clutching aimlessly at the grayish moss. Moving your hand up and down, dousing him in his own slick, you were hypnotized by this samu, a foolish little puddle of need and want, so extremely sensitive, so very pretty with tears in his eyes and lips quivering. Shy and bordering on crying, he was like a… wait.

“are you a virgin?’ your hand stilled at his tip, thumbing mindlessly over the slit. forced to open his eyes, he tilted his head again, ears twitching in confusion. “vir-”

“first time?” you saved him the embarrassment, playful grin pulling at your lips as he dropped his gaze again, nodding.

snaking your hand under his chin, you brought his face closer, leaving reassuring pecks all across the blooming cheeks. “you want to do it?”

“yes” a rushed answer igniting your core with tingles, you left one last peck to his lips and straddled him, skirt tossed aside to the thickets of grass.

teasing mood getting the best of you, you let your folds brush against his lengths, adding to the moisture. samu’s eyes were fixed on where the two of you connected, body all still except for the happily fluttering ears. “no no, watch me” you cooed, raising his chin up with your finger and tossing the rest of your clothes aside, hips picking up the pace as you humped on his pulsating cocks.

samu gulped down the huff and obliged, hands finding purchase on your hips. his tail flapped lightly across the stone, body seizing up every other second as his tips brushed against your entrance. it was intoxicating, watching this hunk of a man so sheepish and eager while not even in, little whines and chirps bubbling up in his chest all because of you.

dragging your pussy over him one more time, you lined his lower dick with your entrance and sank down, the stretch burning just a tiny bit. he was so thick, so heavy nestled all the way up to your belly, and your walls twitched uncontrollably, trapping him inside.

“fu-fuck” he cried, fingers digging into your thighs and ass, eyes screwed shut of the sheer pleasure your tightness provided. your own legs shook, thighs splayed over his lower half, and you felt too drunk, suddenly, realising how hard it will be to last long on top of him like that. so pretty, so innocent even after his mouth has been devilishly good to your arousal, and stretching you out so perfectly, he was truly a gift.

with one of your hands on his chest and another enveloping his upper cock, you tried to move, jerking your hips up and down, and your vision turned white for a second. he pressed against all the right places, the drag of soft ridges and curves hooking you up in an instant, and you moaned, trying the movement again.

samu thrashed under you, eyes glassy, mouth hanging open in silent scream, and bucked up into you, shifting the angle just a bit and

“ah, samuu, ah-” you cried, nails digging into his chest. “m-more, like that”

fat chance he didn’t really hear you, too lost in bliss and chasing his own high like feral, he bucked up more and faster, faster, fingers digging into the plush of your ass. you bounced on top, choking up on your own sobs, your essence streaming down your thighs and letting out the sinful squelching sounds as you two neared your high.

“sa-samu, oh, like tha-at” you whined, your hand pumping his upper dick on its own, all rhythm lost to overwhelming pleasure as you felt the familiar yet much bigger knot tying up inside.

“mmhm, like that, mhmm, ah-” he echoed, foolish grin tugging at his lips, crazed eyes fixated on your fucked out face right above his own, as his thrusts became deeper, harsher, aiming right at your sweet spot inside. “gon’ mmm, gon’ c-cu-”

“saamuu!” you cried, toes curling as your hand tightened around his other cock and the knot snapped loose, orgasm washing over you like a tsunami. he followed right after, runny copious loads painting your insides, his body shaking and seizing up as he hugged you tight, face hidden in the crook of your neck.

as you two came down your high, you kissed his chest, propping up yourself to smile at his blissed out features.

“wanna go again?”

MDNI, reblogs and comments are welcome, double wrap for double d

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