atsumu likes to see how flustered he can get osamu in public, working down his brother's zipper and pulling out his cock right there under the table at the MSBY franchise banquet with ten other people seated with them.
atsumu's skill with his hands is unparalleled. he sips his wine and works osamu's dick like the gearshift in a hot sportscar, knowing just how to tease him up to the edge and pump the breaks before he can finish.
trouble is, osamu's a contrary /jackass/.
despite atsumu's persistent edging, osamu shows /no/ reaction whatsoever, carrying on a conversation about the season's stats with some stockholder sitting on his other side, cutting his steak with knife and fork like nothing untoward is even happening
osamu /knows/ what atsumu's after and plain refuses to give it to him, outright /denies/ him any satisfaction whatsoever, not a single flicker of acknowledgement that his dick is rock hard and fit to burst, trembling in atsumu's sinfully coaxing hand.
his endurance would be impressive if atsumu wasn't so goddamn frustrated.
all he wants is for osamu to casually turn to him and /beg/ with his deep, dark, desperate eyes to have mercy and save him from the humiliation of ejaculating all over the carpet at a formal banquet.
instead, what he gets is osamu dabbing his mouth with his napkin and covering his lap under the table just in time to catch the spurts of his cum while he laughs--loudly and open-mouthed--at some joke the stockholder has made like it's the funniest fucking thing he ever heard.
that /fucking/ asshole!!
incensed, atsumu immediately drops osamu's dick like it's one of leo d1caprio's girlfriends on their 25th birthday and signals a waiter for another glass of merlot.
the dinner plates are cleared and the dessert course is brought out, dainty slices of cheesecake topped with berries and a decadent chocolate drizzle. atsumu takes an excessively large bite--and nearly /chokes/ when he feels osamu's hand rubbing his groin under the table.
"don't inhale it," osamu teases, shooting him an insufferable smirk. he unzips atsumu's fly and gropes his dick out through the hole in his boxers. "not a race to see who finishes first."
atsumu laughs like he's supposed to, but there's some tension in it, blood rushing south.
osamu's firm hand soon has him fully hard and straining in his grip, fighting to focus and keep his breathing even and his expression calm. atsumu grips the edge of the table, feeling heat in the tips of his ears and god he /hates/ osamu with every single bit of their shared DNA.
"what's the matter?" osamu provokes him. "yer not eatin'. too full?"
"/no/," atsumu spits even though he knows he's being baited. he picks up his dessert fork and cuts a small piece, swirling it in the chocolate sauce before lifting it to his mouth.
osamu suddenly twists the grip of his fingers around atsumu's sensitive cockhead and atsumu jerks--the cake falls off his fork onto the tablecloth and he lets out the breathiest, most embarrassing gasp, "ahhh~!"
the other men at the table chuckle at his little mishap like indulgent uncles, teasing him playfully.
"careful there," osamu chuckles with them.
atsumu feels his face overheating, /mortified/ by the entire situation and wishing he could turn invisible on the spot.
but there's nowhere to escape when osamu's rubbing his dick like /that/ and urging on a climax he's no longer confident about holding back or disguising well enough not to be thorougly and publicly /humiliated/.
which, clearly, is what /osamu/ wants.
"the rest of yer dessert looks so tasty, tsumu. gonna finish it?" osamu goads him again, smirking with that twinkle in his eye.
still flushed, atsumu scowls at his twin and with monumental effort atsumu takes a heaping bite of cheesecake and raspberry and shoves it in his mouth.
he tries to make a show of chewing and swallowing the decadent dessert but osamu's hand doubles the pace under the table and works his dick like a goddamn snake charmer. before atsumu can realize what's happening he's already hurtling towards his orgasm and sucks in a breath--
he grabs his napkin and right when he spills his load he pretends to sneeze, doubling over and bark-screaming into the wad of scented linen, again and again, shoulders shaking and dick twitching through each massive spurt like he hasn't cum in a month instead of the mere 8 hours
since they fucked that morning.
finally his dick subsides, as well it should after painting the plush carpet like a goddamn jacks0n p0llack.
atsumu lifts his head from his napkin, face a mess of tears and skin blotched red.
"bless you!" everyone at the table choruses.
"thanks," atsumu nods all around, biting his lip in mortification.
"aight there, tsumu?" osamu pats atsumu's limp cock under the table and then pats him heartily on the back, rubbing between his shoulder blades in a shockingly believable display of concern. "didja catch a cold?"
atsumu flashes his meanest scowl, glaring. "nah, just an annoying /tickle/."
osamu busts up laughing, a raucous, open-mouthed sound, eyes squinting shut. atsumu grinds his teeth, wishing he could be more offended but god, osamu looks so good when he really, truly /laughs/.
atsumu sighs, suddenly not caring to stay at some stuffy banquet any longer. he nudges osamu with his knee.
"actually, might be a cold after all," he says.
osamu cocks his head, a knowing smile tugging on one side of his mouth. he gently touches his wrist to atsumu's forehead,
which somehow heats atsumu up twice as fast as anything they did under the table.
osamu squeezes his shoulder and reaches for the jacket on the back of his chair. "let's getcha home then."
atsumu nods, discreetly tucking his dick away and fastening his pants before standing up.
they say their farewells and leave the fancy banquet hall. on the elevator ride down to the ground floor, osamu tucks his hand in atsumu's back pocket and /squeezes/.
"happen to know a damn good cold remedy," he offers.
atsumu snorts. "really? an' what's that?"
osamu leers. the elevator dings and as the doors open, he withdraws his hand from atsumu's pocket and leans in to whisper, "guess ya'll find out soon enough."
Omegas Natsu and Atsumu get knocked up at the same time - since they share heats and ruts with both Osamu and Shouyou it's not clear who actually sired whose pups.
Which. They're all together in one big messy love nest anyhow, literally
and figuratively speaking, so it's not any consequence in the big scheme of things. Their pups will be perfect and they'll have more than enough love from all four parents to keep them safe and thriving and happy.
Osamu and Shouyou see it this way, but their alphas??
HA.
Their alphas go /nuts/ with the need to claim and protect their mates, and even though they're technically mated to each other, the alphas suddenly view every other alpha as an enemy to be chased off the property and barred for eternity.
Overse where it's expected and preferred for teen siblings or cousins to take care of each other's physical needs in puberty when their secondary genders present.
Heat/rut in adults can be managed by medication or one's mate,
but prescribing medication to growing youths is considered inhumane, as would attempting to take a mate before the right emotional maturity has been reached, which usually isn't until the early 20s where dating and finding a happy, healthy love bond with a mate is appropriate.
Teenagers just aren't equipped to handle what it means to be someone's life partner, and lack the skills to find and recognize their match. Puberty hormones are part of it, making teens irrational and needy when taken over by their heat/rut, which has no predictable schedule.
Captain Atsumu and First Officer Osamu command a Federation science vessel on expedition through an unexplored quadrant of space.
After surveying the surface of an alien planet, a transporter malfunction creates a duplicate of Osamu.
There's a time delay before the second Osamu appears, so it's not clear to anyone what's happened at first. Osamu seems tired and a bit disoriented, which is understandable after all the away trips to the surface, so Atsumu doesn't suspect anything right away.
They have separate quarters but an adjoining door, since they're brothers and all. Atsumu checks on Osamu that night when his shift on the bridge is over, thinking he'll get him some pudding and tuck him in. Osamu's worked so hard down on the planet and he deserves some rest.
#miyacest#nsfw fraternal #twincest brainrot 💖
cw: oral sex, piv sex, underage (middle to hs miyas), she/he pronouns so you can imagine whoever you want ✨
(god, fraternal miyacest is just so good??? like you get all the goodness of twincest but then also size difference??)
girls mature faster so she's taller by 5th grade and fills out first, by 7th grade her boobs are envied by all the other girls along with her curving hips and strong legs from volleyball. he's still not much to look at yet, all gangly, but he sure likes what he sees, and she
thrives on the pleading, pining looks he sends her way day and night. she turns him into her pussy hound, gets him under her skirts licking her wet slit whenever she wants because he's thrilled just getting glimpses of her bra, so of course he's going to do anything she wants.
Shouyou and Natsu know to give the twins private time together on their birthday. It's their special tradition, after all.
But this year, for the first time since they were born, they won't be in the same location to celebrate their birthday and the effect this has on both twins is unexpectedly dramatic.
Shouyou tries to appease them. "It's just a day on the calendar. Why not wait until Osamu's back
from his business trip? Postpone for a bit?"
The twins know what Shouyou's saying makes sense. But Shouyou's logic - how he's had to delay a lot of things going back and forth from Brazil so it's normal for him - doesn't quite work on the two of them, who have shared a womb.
#nsfw#miyacest cw: masturbation, tentacle dildo, anal sex
Atsumu half-jokingly mentions one night that it might be fun to have a monster dildo like a tentacle or something to play around with sometimes.
Osamu knows full well that behind the joke, there's a real desire for kink exploration, and damn if he's not into it too.
He finds the most massive tentacle dildo on the web, and orders a custom one with a deep grey base like an octopus, and a pink fleshy color for the S-curved
and knobby insertible end with faux suckers that get smaller at the tip.
It's monstrous all right. /Obscene./ And oh, the thrill of presenting it in a box to Atsumu, watching him unwrap it and then--eyes bulging--turning bright crimson and stuttering, nervous to even pick it up.