
Posted originally on the Archive_of_Our_Own at https://archiveofourown.org/
works/12443241.
  Rating:
      Explicit
  Archive Warning:
      Underage
  Category:
      M/M
  Fandom:
      Haikyuu!!
  Relationship:
      Hinata_Shouyou/Kageyama_Tobio
  Character:
      Hinata_Shouyou, Kageyama_Tobio, most_of_the_team_shows_up_but_they_don't
      have_significant_roles
  Additional Tags:
      Alpha/Beta/Omega_Dynamics, Alpha/Omega, Omega_Verse, Alpha_Kageyama
      Tobio, Omega_Hinata_Shouyou, Omorashi, Watersports, Fluff_and_Smut,
      submissive_urination, this_is_omegaverse_pissfic, hinata_and_kags_are_17-
      ish
  Stats:
      Published: 2017-10-21 Updated: 2018-01-23 Chapters: 2/3 Words: 3514
****** A Natural Reaction ******
by darkmilko_(FreshMilko)
Summary
     It’s perfectly normal behavior for an omega to urinate in submission
     when intimidated by an alpha. That’s just physiology. So Shouyou may
     have always had accidents a bit more frequently than any of his
     peers, and maybe he’s a little too old to have not outgrown this
     problem… But really it has never been that big of a problem... Until
     he met Kageyama Tobio.
     This is a fill for the hq kinkmeme, "omegaverse with an omo twist"
     but with added fluff bc im weak
Notes
     Based on an old prompt on the kinkmeme, I've been thinking about
     writing this fic for a looooong time. And now it's finally happening.
     I've tried to avoid the creepy rapey tropes that are common in
     omegaverse, but fair warning there's still a lot of instinctual
     behaviors bc I love them. Mind the tags, and I'll probably add more
     as I keep writing.
See the end of the work for more notes
***** Chapter 1 *****
It’s not Shouyou’s fault.
It’s perfectly normal behavior for an omega to urinate in submission when
intimidated by an alpha. That’s just physiology. So he  may  have always had
accidents a bit more frequently than any of his peers, and  maybe  he’s a
little too old to have not outgrown this problem… But really it has never been
that big of a problem. Until he met Kageyama Tobio.
The first time was in middle school, during his match against Kitagawa Daichi.
Shouyou didn't even notice what was happening until the end of the game, when
he realized his underwear were uncomfortably wet. But still he chalked it up to
sweating more than usual due to the intensity of the game and ignored it.
Until Kageyama came right up to the net, looming over and barking harsh words
at a defeated Shouyou. The newly developed alpha was releasing waves of scent
and aggression that completely overwhelmed Shouyou, who had also just recently
presented. He stiffened at the way his body reacted, instincts wanting nothing
more than to fall on his knees and bare his neck in submission. That scent -
like spice, smoke, and ozone - flooded Shouyou’s senses.
He couldn't help but release a whimper and felt his bladder loosen before he
could help it, some pee leaking out. It was all he could do to stand stiff,
head bowed. He knew that if he even moved an inch he would lose control. The
alpha angrily stormed away to line up. Shouyou slowly followed suit, and that
was the end of the game.
And yet he couldn’t stop thinking about it as he changed and got ready to
leave. He couldn’t just leave it like this, right? He exited the building and
saw him. Steeling his resolve and stamping down his traitorous instincts,
Shouyou runs after Kageyama and plants his feet right behind him.
And Shouyou yells, determined not to let this guy walk all over him just
because he was an alpha. So maybe he was a better volleyball player, but that
didn’t matter. Shouyou would practice hard and defeat him someday! As Shouyou
shouts his challenge, he could only hope no one noticed the small, slowly
growing stain on the seat of his shorts.
Then the tournament was over, and Shouyou went home with a newfound
determination.
And that determination was effectively squashed as soon as Shouyou walked into
the Karasuno gym to find his biggest rival had become his newest teammate.
The smell, smoky, spicy sweat and musk, was the first thing Shouyou recognized.
That scent and the commanding presence of the alpha as he looked over to where
Shouyou stood were enough to set off his instincts. Knees weak and head tilted
ever so slightly, he spilled again, just a bit, into his shorts.
The first few days of being on the team with Kageyama were rough for the omega.
Every time the alpha yelled at Shouyou he would leak a little. Of course in the
beginning he  only  yelled, but eventually they became begrudging friends. That
didn't stop Shouyou from pissing himself constantly around Kageyama though.
It's just because Kageyama can't smile and it’s scary , he tells himself.  It's
because he's the king!! Of course he's intimidating! Peeing a little every time
I see him is only a natural reaction coded by biology.
It's not at all because Shouyou finds himself desperately attracted to his best
friend. Kings are just naturally attractive! He's his friend, and a friend can
tell when a friend is extremely good looking. It doesn't mean anything.
So maybe when Kageyama yells or touches or gets to close to Shouyou he can't
hold it all. Maybe sometimes when Kageyama just looks at Shouyou a little too
intensely he pees a bit, but really, honestly, it doesn't mean anything! It's
an omegas natural reaction, and Shouyou firmly convinced himself this hasn’t
been a huge problem. A little uncomfortable and nerve-wracking, but Shouyou had
it under control. He’s been able to keep his little problem a secret so far,
due to frequent bathroom trips and probably plain good luck. Of course good
luck always does have to run out sometime.
 
===============================================================================
 
 
It’s near the beginning of their second year. With last year’s seniors gone and
the arriving first-years having not yet signed up for clubs, the gym is
unusually empty. Tanaka fills his role as captain well, if not a bit
irresponsibly- letting his scent slip out constantly. Ennoshita, however, keeps
him in check as Vice Captain. Practice is a bit strained as everyone gets used
to the absence of their old upperclassmen, but it’s especially tough for
Shouyou, though not for any of those reasons.
Shouyou’s heat is coming soon, and he’s been having especially intense pre-heat
symptoms. It’s not anything too bad, just some dizziness and fatigue. If
anything the worst part is his heightened senses, the strain and fatigue in his
body feeling that much worse, the smell of stress and sweat cloying in his
nostrils.
He should probably sit out, he knows it can be dangerous to practice while
distracted, but he really doesn’t want to miss out on any practice. That turns
out to be a mistake of course when a sudden strong whiff of Kageyama’s scent
causes Shouyou to stiffen in the middle of a jump, landing on his ankle badly.
Shouyou falls to the ground with a yelp, grabbing his throbbing ankle.
Practice stops around him and everyone runs to where he sits, checking if he’s
okay. Ennoshita comes over to help him stand on one foot, testing his weight on
the other.
“How bad is it?” he asks, worry emanating in his scent.
Shouyou applies a little pressure and feels a twinge, but no shooting pain. “I
think it’s okay. I think I just twisted it a little when I landed. I can
probably walk.” And it’s true. He could probably even play, but even Shouyou
knows how bad an idea it is to risk further injury.
Ennoshita supports him under his arm and slowly walks him to the bench,
releasing a soothing scent. Although Shouyou’s frustrated he has to miss
practicing for at least a day, he’s a bit relieved to rest his aching, dizzy
body. He watches the others for the rest of practice, despite Takeda Sensei’s
urging to go home early. Even if he can’t play, he doesn’t want to miss any
practice.
Shouyou can’t help but notice Kageyama’s scent getting stronger, angrier, but
the alpha won’t even look his way.
Eventually practice ends. As everyone begins to clean up, Shouyou stands and
tests his ankle again, relieved to find there’s barely any pain with his full
weight on it. He starts for the door but stops short as an overwhelming scent -
spice, smoke, and ozone - burn in his nose. Kageyama is storming over, furious,
releasing waves of aggressive scent and Shouyou freezes, heart pounding.
Kageyama stops right in front of Shouyou, eyes blazing as he yells, “Hinata you
fucking idiot!  What were you thinking?!”
Shouyou stands frozen, body locked tense as he denies his instincts, screaming
at him to submit. To drop on the ground and bare his neck, release an enticing
submission scent to appease the angry alpha. The worst part is, Kageyama is
right. Shouyou knows he’s right. He was being reckless, practicing so close to
his heat. He could have easily gotten seriously hurt, just for an extra hour of
practice. The guilt roils in his stomach and he squeezes his thighs as a
trickle of pee escapes him, then another, as Kageyama continues to yell.
Kageyama is completely unaware of the effect his threatening stance has on
Hinata and he steps closer “Why were you so distracted?! What if you had really
gotten injured?! We can’t win nationals without you! We need you!”
At those words Shouyou can’t hold it anymore, can’t fight his instincts and
collapses as his knees buckle, his head lolls to the side to bare his neck,
lips parted, eyes glazed, and a rapidly spreading puddle forms beneath him.
Everyone freezes as the scent of a complete omega submission fills the room.
Kageyama stands shock-still, anger completely dissipated as he stares in wonder
at Shouyou.
Shouyou quietly whines, lost in the bliss of submission, lidded eyes locked
onto Kageyama’s face. Nobody moves for a few moments.
Then Takeda sensei quietly kneels by Hinata’s side and gently places a hand on
his shoulder, releasing waves of soothing omega scent. He signals to Tanaka to
end practice, Ukai already heading out to fetch the janitor. Takeda murmurs
into Hinata’s ear and gently guides a dazed Hinata out the door, waving
Kageyama to follow. Kageyama tries not to stare at the way Hinata’s wet shorts
cling to his frame, or the liquid shining between his thighs.
They head to the lockers where Takeda-sensei leans an unresisting Hinata onto
Kageyama’s shoulder. Takeda looks a bit awkward at first, but puts on a stern
face as he speaks.
“Kageyama-kun, you took sex-ed right?”
“Y-yes, Sensei,” Kageyama replies, still too shocked to do anything but answer.
“Then I trust you understand enough about omega submission to know that this
really means something.”
“...Yes, Sensei.”
“Alright. I want you to help Hinata-kun shower and get changed. He’ll probably
be too dazed to really function for at least half an hour, but he’ll respond to
gentle commands from you. You’ll probably need to walk him home or take him to
yours and stay with him for a while until he’s back to himself. He won’t be
very aware of his surroundings so make sure to be careful and keep an eye on
him.”
“Yes, Sensei.”
“He gave his trust to you, don’t let him down. And Kageyama-kun? I want you two
to talk today. Don’t let it get awkward by avoiding your feelings. Don’t let
Hinata-kun do it either. Talk, communicate. If you ever need advice about these
things, I will always be here, but my first order of advice will always be to
communicate.”
“Yes, Sensei,” Kageyama’s mind is swirling with what just happened. Hinata
submitted, to  him . He just can’t wrap his head around it. Omega submissions
are rare, and even rarer are complete submissions. It takes absolute trust,
respect, and desire. Kageyama never imagined Hinata had felt any of those
things for him, and certainly not to this degree.
Sensei’s voice pulls Kageyama from his thoughts, “I’ll leave you to it, but
please, don’t forget what I said. You two are amazing together, don’t lose that
because you are too afraid of your own feelings.”
And then he’s gone, and it’s just Kageyama and Hinata. Kageyama quickly and
respectfully strips Hinata down and leads him into the shower. He helps him
rinse off with uncharacteristically quiet commands and gentle touches.
***** Chapter 2 *****
Chapter Notes
     Surprise!! New chapter!! Notes about it at the end
     Unbeta'd and also barely revised (soz) so please do point out any
     mistakes or typos.
     Thank you for reading and I hope you enjoy!
See the end of the chapter for more notes
By the time they finish, Hinata has come a bit back into himself, but still can
only manage Kageyama’s name. Kageyama finds Hinata’s bag and hands him his
clothes, only needing to lend a hand when Hinata’s arm gets caught in his shirt
and he whines, “Kageyaamaaaa..”
Kageyama absently helps Hinata’s arm through and wonders where the rest of the
team is, figuring they are probably hanging back until he can get Hinata out of
there. That’s for the best, because now that Kageyama has gotten over his
shock, his protective alpha instincts are kicking in. He’s not sure he can
control himself if another alpha were to get too close to Hinata right now.
He doesn’t even like the fact that they are still at school. They should be in
the safety of his own home, his own room, surrounded by his smell. Hinata
should be wrapped up in his blankets and pillows, purring in content. Hinata
could reach out for Kageyama, inviting him to nest, and Kageyama would easily
let himself be pulled in. Would wrap himself around Hinata’s small, lithe
frame, inhaling his sweet, sweet scent. They would kiss and cuddle, Kageyama
would sneak his hands under Hinata’s shirt, feeling the smooth skin….
Stop fantasizing idiot , Kageyama shakes himself out of his head. He needs to
focus. Hinata trusts him… Hinata  likes  him. Kageyama can’t let himself get
distracted while Hinata left his body in Kageyama’s hands.
And first, they need to get home. Luckily Kageyama lives just a 15 minute walk
from the school through residential areas. They shouldn’t meet many people on
the way.
But still, just in case, Kageyama releases a cloud of scent and rubs his jacket
on his scent glands before guiding Hinata into it. The jacket engulfs Hinata,
it hangs down nearly to his knees and the sleeves hang far past his hands.
However, Hinata seems right at home as Kageyama zips him up in it, holding the
neckline up to his face and breathing in deeply, a contented purr quietly
rumbling in his throat. Kageyama feels a flood of satisfaction at making Hinata
purr with his scent and clothes.
Now comes the difficult part. Kageyama stares down at the heap of Hinata’s
soaked clothes and gulps. The image of Hinata, on his knees, neck bared, the
delicious smell of omegan submission suddenly comes back to Kageyama and he
can’t help but remember those glistening drops running down Hinata’s legs. His
boxers start to feel a bit tight but he forcefully pushes those thoughts away,
rinsing off the dirty clothes and shoving them into his bag, he’ll clean it out
later.
But as much as Kageyama tries to stay on task, he can’t stop all of the
confused thoughts swirling around his head.
Kageyama has been called dense before, he knows he doesn’t understand what some
people see as obvious, and he doesn’t really think about a lot of things that
everyone else seems to think about. So he’s not surprised he didn’t realize
Hinata thought about him as an alpha, and even as a potential mate.
He  is , however, surprised that Hinata likes  him . Kageyama’s never really
thought of Hinata romantically, he’s never thought of anyone romantically. But
he thinks maybe, if he’s going to have a mate, maybe Hinata is exactly the type
of person he’d want to be around his whole life. He’s cute and strong and he
challenges and encourages Kageyama to be his very best. And he also smells
really, really good. Like citrus and vanilla- Kageyama secretly can’t get
enough of his scent.
They are already partners, and they’ll be together for as long as they are
playing volleyball for sure, but what about after that? Kageyama’s never
thought about it before. He’s going to continue volleyball as long as he
possibly can, maybe even go pro someday. But what about Hinata? Kageyama just
assumed they would be together, but what if Hinata  doesn’t  want to go pro, or
even continue playing in college? Or what if he does, but separate from
Kageyama?
Kageyama realizes he must have been releasing a distressed scent because Hinata
whines and leans into him, trying to soothe him with a croon.
Kageyama grimaces at himself, what kind of alpha makes a submitted omega feel
the need to soothe  them ? Sensei was right, they just need to talk about it.
But first, Kageyama needs to get Hinata somewhere safe and alone.
 
===============================================================================
 
30 minutes later sees Hinata comfortably dozing in a pile of blankets on
Kageyama’s bed. Luckily they hadn’t met anyone on the short walk to Kageyama’s
house, aside from a few students milling around campus that steered well clear
of a growling Kageyama. Hinata had gained a bit more awareness on the way back,
but mostly he just blushed and hid his face in Kageyama’s side.
As soon as they had gotten back Hinata dug himself into Kageyama’s sheets and
soon fell asleep, snoring lightly. Kageyama’s not surprised, complete
submissions are known to be pretty tiring, not to mention Hinata’s soon coming
heat. Kageyama likes seeing Hinata happily cuddled up in his bed anyway, and he
brushes a bit of Hinata’s soft hair out of his face and continues to let him
rest.
 
===============================================================================
 
It’s not long before Hinata wakes up, confused by the unfamiliar ceiling. He
sits up, noticing how incredibly relaxed and well rested he feels, and then he
remembers.
A deep red blush floods his face. He had  submitted.  To  Kageyama!  Hinata
can’t deny his feelings anymore. He’s always noticed how  cool  Kageyama is,
but just wrote it off as friendly admiration. He’s tall, and his eyes are such
a pretty, deep blue. Hinata loves his scent, sharp and alluring. His body is
toned and strong-Hinata imagines himself wrapped up in those arms and squeaks.
He likes Kageyama, and he wants to be his omega. His instincts certainly
recognize Kageyama as his alpha.
Hinata thinks back to the way Kageyama held his waist possessively as they
walked home, grip tightening anytime someone walked by. The memory almost feels
dreamlike, but he knows it was real, the way Kageyama growled every time a
passerby got too close. Maybe, if it wasn’t purely fueled by alpha instincts,
Kageyama wants to be  Hinata’s  alpha too.
Hinata wriggles in embarrassment, hiding his face in the blanket.  That would
be nice , he thinks.
Hinata jumps when the door opens and Kageyama walks in with a glass of water
and some granola bars. As soon as he sees Hinata awake he jolts, then awkwardly
sits next to the bed. He sets the water and snacks on the bedside table.
“I… brought you water.. And food,” he starts, gruff, avoiding looking at
Hinata’s face. His mouth is pulled down into a scowl, and Hinata would be
terrified if he didn’t know that was just Kageyama’s awkward face.
“Thank you,” Hinata mumbles, suddenly too shy to look up at Kageyama. There is
an awkward pause as Kageyama sits tense and Hinata kneads at the blanket.
“Kage-”
“Hina-” They start at the same time, then another awkward silence arises as
they stare at each other. Kageyama’s face turns dark red and Hinata can’t help
but let out a giggle.
“You first,” Hinata says with a small, shy smile on his face.
“Oh, uh. Okay…” Kageyama pauses, an unsure grimace flashes over his face but he
eventually forces the words out. “Um, I’m not good at this kind of thing-”
Yeah, obviously, dumbass  “-so I’ll just ask. Do you wanna be my mate?”
Hinata squeaks as blood rushes into his reddening cheeks, yelling “Bakageyama!!
Where’s your delicacy?! That’s so embarrassing!” Hinata swings a pillow and
hits Kageyama in the face.
“Hinata you idiot! Stop hitting me! I told you I’m bad at it! I don’t know what
to say!  You  say something!” Kageyama pulled the pillow from Hinata’s grasp.
Hinata huffs and settles down, mumbling, “Sorry… I’m bad at this, too. I mean,
isn’t it obvious, though?”
“Wh-what do you mean? What’s obvious?”
“Us! We’re like, the strongest combo! In volleyball, but also maybe together? I
don’t know, I’m not really into the whole dynamic thing, I’ve never even gone
on a single date. But I think, since we’re gonna be together for volleyball, we
could also  be together! ” Hinata’s voice had gradually risen with excitement,
but he quiets down and continues, “I mean, if you want to. But um, I’m just
saying, I’m not against it. Obviously. I wouldn’t... Submit… to just any alpha.
Only you.” Hinata pulls the blanket up to hide his blushing face again.
Kageyama can’t help but stare. He’s never felt so protective, or so
affectionate  towards anyone in his life, and frankly, he doesn’t know how to
deal with it. He wants to squeeze Hinata in a tight hug, scenting his soft
hair, laying kisses down his neck. And if Hinata’s words are to be trusted, he
wants that too.
But Kageyama hasn’t forgotten Takeda-sensei’s advice. First, they have to talk.
And quickly, if Hinata’s ripening scent is anything to go by. His heat will
probably start by tonight, and if he wants to go home, Kageyama doesn’t want
him walking around vulnerable.
Hinata lets out a choked noise, and Kageyama realizes he’s been silent for too
long, with a grimace. Hinata probably thinks he’s trying to turn him down.
“Wait, sorry, I was just thinking. But I feel the same way. About you. About
us. For the person who will be with me for the rest of my life, who better than
my ultimate rival and ultimate partner, right? I think you’re… really cute. And
I like the way you smell. I’ve never been interested in being with anyone
before, but I’m interested in being with you.” Kageyama looks up at Hinata’s
face and is blinded by the wide smile stretching his cheeks.
“So does this mean we’re mates now?” Hinata asks, smile still brightening the
whole room.
“Um, yeah. Can, can I kiss yo-” But before Kageyama can even finish, Hinata is
there, squeezing Kageyama’s cheeks with his palms and smashing their lips
together.
There’s no finesse, no skill, just spit and teeth and raw excitement. Yet
Kageyama finds it perfect, he lets his eyes drift shut and reaches for Hinata
to kiss back.
Chapter End Notes
     Okay It was super hard getting these stupid dense boys to talk about
     feelings in an effective way, so apologies if it felt ooc. I do
     think, though, that in their second year they will have matured at
     least a LITTLE.
     There is an astounding lack of omo in this chapter and for that I do
     apologize. HOWEVER listen next chapter... next chapter. Trust me. It
     will be the smut we've all been waiting for. Plus omo so get ready.
     Anyway thank you for reading, and thank you sooooo much for all the
     kudos, bookmarks, and incredibly sweet comments. It's really helped
     motivate me to keep going with this fic!
End Notes
     I'm thinking this will end up 3 chapters but honestly who knows. I
     sure don't.
     Anyway kudos, comments, and bookmarks give me life and are always
     very much appreciated! Thank you for reading and I hope you liked it!
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