Hii baby !! Imagine older brother Tooru just absolutely looooves and adores his little baby sister and shes so sweet and naive, so innocent minded and she just loves loves her Toou-nii!! Their parents clearly like Tooru more and it saddens her— it does! But it’s okay because Tooru-nii is always there for her anyways<3 he even baby proofed the whole house just to make sure she wouldn’t hurt herself!! He told their parents it was more convenient to baby proofed the house so that his dumb baby sister doesn’t accidentally hurt herself again with how much of a klutz she is:(( Tooru-nii always picks out every little thing for her!! He always babies and spoils his baby, but he won’t hesitate to fuck her like the dumb baby she is when she even DARES to glance at Tobio</3
Ps: i love your writing ❤️🩹 can i be 🕷️ anon?
baby proof - oikawa
🕷️ anon i love you!!!!!
tw: incest/stepcest, dumbification, 18+
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just being so grateful to have tooru that you let him do whatever he wants :(((((
and so dumb you don’t even notice yourself being conditioned to get all wet down there every time he rubs your shoulders and says “remember, this is our little secret.”
and for a secret, it really is so obvious. but your parents either don’t pay enough attention or just don’t care enough to notice just how close you are with your big brother. they’re oblivious to the fact that he takes you shopping all the time and chooses all your clothes— even your bras and panties. or how they only hear the shower being used once in the morning, but you both come down with damp hair, and tooru always has a smug expression as you trip over your own feet trying to walk on shaky legs. all the marks his strong fingers leave when he holds you still to stop your squirming away from his big cock— they figure it must just be from how stupidly clumsy you are. tooru was a nice enough big brother to place anything you might hurt yourself on or knock over out of your reach, and you still manage to get all those purplish bruises all over you. what are they going to do with you?
it makes you sad to see just how little you compare to tooru in their eyes, but he always tries to make you feel better about it. he thinks you’re smart, and pretty, and sweet. the best little sister ever— he tells you a lot when he’s got his leaky cockhead in your mouth or when he’s deep inside you, giving you those slow, deep thrusts that make your insides hug him really tight.
you really love your big brother. if you think about it too much, you get all confused because he’s also like a father to you in a lot of ways. he feeds you, dresses you, punishes you when he catches those rare stolen glances between you and that dark-haired setter. doesn’t ever let you date boys and spends a lot of time teaching you about the world, telling you how dangerous it is for little girls like you who just don’t know that much about anything. it frightens you, makes you cling to him and kiss him that much more desperately when he’s got you beneath him, taking the length of his cock deep in your cunny until he fills you up with all his cream that makes you feel so warm.
he’s right, of course — you really don’t know anything. you don’t know why you can’t seem to get any affection from your parents, or how tooru manages to be so patient with you when you’re so dumb and clueless. it hurts your little brain when you spend too much time thinking about how your big brother is also like a father and a boyfriend all in one, but you guess that’s why tooru always tells you to just stop thinking— and it works! life is so much easier when you just shut up and do everything your big brother says.
gosh, he really is so smart. you sure are so glad he’s yours.
hi!! do you still take requests? i was thinking of big bro oikawa x lil sis reader x iwaizumi .. iwaizumi gets a little touchy with reader and big bro oikawa has to show him that they’re only his!! 🫣🫣
a/n: YEESSSSS. can’t wait for iwa’s redemption when he fucks you stupid to get back at oikawa for this 💔
tw: noncon/dubcon, voyeurism, incest/stepcest
18+
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big brother oikawa who takes you from behind, hard and deep, not letting up or giving you any breaks. he lets out short, breathy laughs every time you whine and bury your face in the sheets, so embarrassed by the wet, sticky sounds filling the room every time he sinks back into your heat.
so embarrassed by who’s watching.
oikawa doesn’t let you hide your face for too long, gripping your hair to pull you up so iwaizumi can really hear your drawn out moans and cries. god, you’re such a baby. can’t even take your big brother’s cock after flirting with his best friend? letting him cuddle up to you on the couch and hug you from behind. blushing and giggling like a little schoolgirl every time he teases or play fights with you— stuff that only your big brother should be doing.
you know that. now iwaizumi knows it, too.
“t-tooruuu!” you cry, fighting and squirming to get out of his grip. you can’t look iwa in the eyes, it’s too embarrassing. you can’t let him see the way you go nearly cross-eyed, totally stupid every time your meanie brother ruts into you at that angle that makes your legs shake. “let me go—ugh—s-stop!”
he lets out another chuckle, releasing your hair to get a good grip on your face and forcing you to look at iwa. you can’t focus too well with your pussy being filled over and over and your brain getting all fuzzy, but you moan when you see him leaning back in his chair with his big cock in his hand, stroking it slowly as he bites his lip. the sight makes your body heat up, your pussy squeezing down on tooru’s cock as you moan and drool.
“oh, shit— don’t look so guilty, iwa. she likes this.”
you do. you do and you hate it. more than anything, though, you hate how much iwa likes it. you can see it on his face, never mind how leaky his cock is. his face reads as disgust, guilt, anger at his best friend for involving him in something like this. but it also shows overwhelming need. like there’s only a thin shred of restraint holding him back from ripping you out of your brother’s grip and taking you himself.
the thought makes you weak. you want to beg some more, for anything. for tooru to stop, or iwaizumi to leave, or one of them to let you cum, but any sounds you hope to make are muffled when tooru squeezes your cheeks together, making your lips pucker as your eyes roll back.
“there, doesn’t she look cute like this, iwa? makes her look real slutty, right?”
iwa nods reluctantly, now squeezing his cock a little tighter, thrusting his hips up into his hand and imagining it’s your pussy.
“see how badly iwa wants you, baby? hm?” tooru asks mockingly, leaning over you to say it in your ear. he pace hasn’t let up, still slamming into you over and over. it makes you breathless, squeezing him as hard as you can to keep him buried inside you.
“see what you- f-fuck— do to him? i think you should apologize for leading him on.”
you shake your head, soft cries wracking your body. you can’t. it’s so embarrassing. so utterly humiliating to have to look at iwa like this, let alone speak.
“do it. say, ‘i’m sorry for being such a slut, iwa.’” tooru grunts, his pace slowing to a grind. it makes you whine, throwing a little tantrum and moving your hips around to get more friction. you can feel the pressure that was steadily building start to rapidly disappear, crying because you were so close.
“hey, don’t be a fucking brat. say it— say you’re sorry for being such a fucking slut, and i’ll let you cum.” he breathes, squeezing your face even harder and stopping his movements altogether.
iwa stops touching himself, too, clenching his jaw and furrowing his eyebrows as he watches you. he’s flushed a pretty shade of red from his chest to his cheeks, his body tense and all the veins in his forearms prominent as he holds himself back— from touching you, from cumming all over himself. from beating oikawa’s face in because he’s jealous, he’s so jealous that it’s not him sinking his cock into your tiny little pussy. he’d be so much nicer to you, he swears. he’d make you cum around his cock so many times, you wouldn’t be able to speak. you’re too little to be getting treated this meanly, too sweet. and definitely too good of a little sister for oikawa.
but it makes his cock twitch in his hand when you finally muffle out a teary little, “‘m sorry for being such a s-slut, iwa.”
he and oikawa groan at the same time, and he resumes fucking his cock into his hand as his friend shoves your face down into the sheets and holds you there, fucking you harder and faster than before.
he can hear you squeaking and crying, working himself up and pumping his own cock in time with oikawa’s thrusts. he bites his lip harder, grunting and panting through his teeth because he’s so close.
he watches you intently, your little body jerking once, twice, then finally releasing in a fit of tremors as you cum all over your big brother’s cock. he and oikawa release at the same time, he thinks, tooru’s seed filling you up as his own spills all over his hand.
he throws his head back, riding out his orgasm by fisting his tip lazily, closing his eyes and listening to you whine as oikawa does the same with slow, deep thrusts back into your heat.
“now,” oikawa breathes, looking too pleased with himself as he sees the mess his friend made all over his hand. “i feel much better about all this, iwa. don’t you?”
