Posted originally on the Archive_of_Our_Own at https://archiveofourown.org/
works/8276297.
  Rating:
      Explicit
  Archive Warning:
      Underage
  Category:
      M/M
  Fandom:
      Haikyuu!!
  Relationship:
      Matsukawa_Issei/Hanamaki_Takahiro
  Character:
      Matsukawa_Issei, Hanamaki_Takahiro, Tsukishima_Akiteru
  Additional Tags:
      Mating, Mating_Bond, Mating_Rituals, Mating_Bites, Fluff_and_Smut,
      Crying, Shy_Hanamaki, i_don't_know_what_happened, Omega_Verse, Alpha/
      Omega
  Series:
      Part 11 of Mating_Night
  Stats:
      Published: 2016-10-13 Words: 1994
****** Matsukawa & Hanamaki ******
by Bittodeath
Summary
     There is an old tradition in the lost villages of Haikyuu, to make
     sure there are no unmated young people: once every three years, at
     night, all the youth between sixteen and eighteen are gathered at the
     entry of the village, Omegas and Alphas alike. They presented as
     either Alpha or Omega and, under the watch of the leaders of the
     village, Omegas are sent into the forest, to run and hide themselves.
     A moment later, Alphas are sent after them. The first Omega an Alpha
     manages to grab is destined to become his mate, and they have to mark
     each other during the night and come back to the village once mated.
Notes
     Okay this is turned out being absolutely not what I had planned (not
     that I had planned much anyway BUT STILL). So I hope you'll like,
     it's the first time I try writing these two and I just... answered
     fluff's call? I don't know.
     (Plz check out the end notes!)
See the end of the work for more notes
There is an old tradition in the lost villages of Haikyuu, to make sure there
are no unmated young people: once every three years, at night, all the youth
between sixteen and eighteen are gathered at the entry of the village, Omegas
and Alphas alike. They presented as either Alpha or Omega and, under the watch
of the leaders of the village, Omegas are sent into the forest, to run and hide
themselves. A moment later, Alphas are sent after them. The first Omega an
Alpha manages to grab is destined to become his mate, and they have to mark
each other during the night and come back to the village once mated.
This technique is not perfect, but everyone is mated and since their other
senses are hindered, most Alphas rely on their sense of smell and end up
choosing the “best smelling” partner, who is biologically the most compatible.
Thus, blood lines are strong – and no one can complain that they were chosen or
rejected. “Mating Nights” are joyous occasions, often followed by a consequent
number of births.
 
Karasuno Village is a particularly remoted village, with only two women but
luckily just an even number of young Alphas and Omegas. And the “mating night”
as finally arrived, under the supervision of their leaders, Ukai and Takeda –
or, as they are called now that they are mated, Keishin and Ittetsu. They have
gathered all their young ones, eager, bored, excited or frightened.
“It is night. You may go.”
 
Matsukawa pressed a last kiss to Hanamaki’s lips, his hands trembling. The
Omega was crying, shivering against him, his face buried in his chest. He was
panicking, he knew he was – he was supposed to lead, as an Alpha, and yet he
didn’t know what to do. He wanted the best for Hanamaki, and his reason told
him the Omega deserved to find his ideal Alpha mate, the one who’d give him
lots of strong kids, and a sturdy home, someone to lean on… His instinct,
however, told him to claim him as his own, and his heart told him to keep
Hanamaki as close as possible in fear that he might be stolen from him.
“I don’t want to go”, the Omega sobbed against him, “you are the only one I
want as a mate, why would I want anyone else?”
“Opportunities”, Matsukawa started.
“Don’t give me that bullshit, you don’t even believe it yourself!”
The Alpha tightened his grip on the pink-haired Omega’s waist, burying his face
in his neck and nuzzling the oh so familiar scent glands.
“I don’t want to give you up”, he finally admitted. “I want you for myself.”
A few seconds passed by and Hanamaki gasped, his sobs forgotten.
“I’ve had an idea!”
“Tell me”, the Alpha pressed him, looking around – it was still early enough,
no one would be searching for them yet.
“If we’re already mated, they can’t send us with the others, right?”
Matsukawa’s eyes widened.
“Yeah, but no one has ever been mated before Mating Night…” A lazy smile
stretched his lips. “You’re a genius!”
Hanamaki laughed happily and oh God Matsukawa loved it. It reminded him of when
he had first fallen for him, cracking awful jokes to Iwaizumi who looked so
done, and how he always made fun of Oikawa even though he was an Alpha. He
loved seeing the Omega’s genuine, happy smile – but what he loved the most were
those shy smile he gave him when it was only the two of them.
“We can’t wait, they’ll start to search for us at any time now… But I have no
idea where we can settle without too much trouble”, the Omega said.
“I think I know the perfect place”, Matsukawa answered. “We’ll go in the forest
and settle in one of the farthest nests as soon as the builders will have left,
okay?”
Hanamaki nodded, grasping his hand firmly as they dashed off from their hiding
behind the wood storage. All the adults were busy and no one paid attention to
them, and their young counterparts were excited, already gathering in two clans
– Oikawa was showing off, as usual, but others looked literally sick. Iwaizumi
seemed perhaps a bit redder than usual, but nothing worth worrying on. They
entered the forest without problem, dodging the trees and racing together. They
would have laughed if they didn’t fear do be caught – this whole thing was
exhilarating, and they finally reached a nest.
A young Alpha – Tsukishima Akiteru, who had come from another village for the
ceremony which would see his little brother’s mating – was putting the final
touches to the love nest, an ovoid construction made of branches and filled
with feathers, wool and leaves. They could see the small wooden cage with
ladybugs inside, supposed to act as a lighting dispositive, and it surely was
beautiful. They waited until he stepped away and left, the wind working with
them and masking their scents. Hanamaki tightened his grip on Matsukawa’s hand
and they dashed out of their hiding place, running to the nest and almost
jumping in, laughing as they collapsed messily inside.
“That was fun, Mattsun”, the Omega wheezed, clutching his belly as he rolled
around.
The Alpha ruffled his companion’s hair, pulling him closer to nuzzle him, his
hair tickling his neck. He loved the heady scent it elicited from the Omega,
nipping gently at the scent gland.
“M-Mattsun, we should hurry up, they’ll come searching for us soon.”
“I don’t want to rush this, Makki”, Matsukawa answered. “It’s our mating, it’s
your first time, I want…”
The Omega glared.
“It’s your first time as well. Just say your nervous.”
The Alpha laughed breathlessly, bending to kiss his mate-to-be.
“Okay, you got me, I’m frigging fucking nervous because there is no way I
deserve you, this is a life-long commitment and we’re here illegally and if
that doesn’t excite you I have serious concerns for our future sex life.”
“Usually I’m the worried one”, Hanamaki chuckled, straddling the Alpha to kiss
him.
“Well I guess loving you makes me worry”, Matsukawa joked, and Hanamaki turned
bright red.
“How can you say things like that without batting an eyelash?!”
Matsukawa chuckled in his neck, gently biting his earlobe, fingers finally
daring to slide under Hanamaki’s shirt to feel his skin – and it was
surprisingly soft under the rough pad of his fingers. The Omega moaned, fingers
tightening on his lover’s forearms, the sugary-sweet smell of excitation
suddenly rising from his skin and making the young Alpha growl.
“Tell me you’re not going on your heat”, Matsukawa breathed. “I’m too young to
be a dad.”
“Don’t worry”, Hanamaki retorted, “I’m not. And you won’t impregnate me just
like that you know. Old man.”
“Rude! I’m trying to be considerate here!” he laughed, tugging him closer and
sliding his hands under his clothes, palms against Hanamaki’s quivering
stomach.
He was about to go lower when a voice interrupted them.
“I am fairly certain the ceremony hasn’t started yet.”
Their heads whipped to stare at the nest’s entrance, where Akiteru stood,
sheepish. Instinctively, the Alpha growled and pulled the Omega closer,
shielding him with his body.
“Okay tell me now what’s happening.”
“We want to mate”, Hanamaki answered firmly, and Matsukawa was surprised by his
tone – he was not conceding anything. He was stating something.
“Why didn’t you wait for tonight?”
“We don’t want to be separated.”
Akiteru smiled.
“I’ll tell you something: if you’re destined to be mates, you’ll find each
other in the dark no matter what happens. However, I can understand your worry.
Well, the ceremony is about to start anyway and it’s no problem. You just stay
here and mate, I’ll explain the situation to your leaders. See you tomorrow”,
he said, winking and striding away.
There was a silence, and:
“Well that was awkward” Hanamaki said.
“At least now I can take my time with you”, Matsukawa smirked, pushing him into
the nest and settling above him. “I’ll make this the night of your life.”
Hanamaki had genuinely never been this red and Matsukawa loved it, bending to
nip at his lips, his fingers gentle as he took of the Omega’s shirt. His scent
was steadily growing stronger, clouding Matsukawa’s judgment. His hands slid
against the inner part of Hanamaki’s thighs, eliciting a shiver. The Omega sat
up, tugging Matsukawa’s shirt off, his hands traveling on his chest and
abdomen, taking in the sight and the feeling of the strong muscles under the
skin.
Suddenly he turned another shade of red, hiding his face as his scent spiked
up, the Alpha cocking his head.
“Makki?” he asked gently, tracing comforting circles against his thighs.
“What’s wrong?”
“I’m leaking”, the Omega answered, his voice muffled by his hands, the Alpha’s
eyes dropping to his crotch to find an already damp spot.
Matsukawa huffed a laugh, pulling him closer and ruffling his hair.
“I’d say I’m pretty flattered”, he said, taking off their pants and underwear,
Hanamaki’s eyes going wide at the sight of his cock.
“There’s no way that’ll fit inside of me”, he stated, scrambling away.
Matsukawa grabbed his face with both of his hands, staring into his eyes.
“Three facts, Makki. First one, it’ll fit in you just fine. Second one, you’ll
love it. Third one, stop worrying and let me take the lead, okay?”
Hanamaki squeezed his fingers tightly, biting his lips and nodding. Matsukawa
gently pushed him, making him lay in the nest. He could feel his Omega’s thighs
already slick and if Hanamaki hadn’t seem so in control he would have been
persuaded he was in heat. His finger pressed lightly against the glistening
entrance and Hanamaki shuddered. His finger soon disappeared in the Omega’s
body, making him moan and Matsukawa wasn’t sure how long he’d be able to hold
on with how cute he was.
He made sure to take his time to stretch his mate, but Hanamaki was tense and
didn’t seem about to loosen up soon, despite his excitation. The young Alpha
sighed, pulling out his fingers and grabbing his Omega’s hips, pulling him
closer and up.
“W-What the hell are you doing, Mattsun?!”
“Forcing you to let go and relax”, the Alpha answered matter-of-factly.
The moan Hanamaki let out when the Alpha pressed his tongue against him was by
far the best he had ever heard. This time, it didn’t take him long to turn the
Omega into a shuddering mess, wriggling wantonly in his lap with little cries
of pleasure that went straight down to his crotch. Soon, he lowered Hanamaki,
legs parted across his lap, the Omega red, his eyes glazed over by pleasure. He
didn’t say a word as he started to press in, his mate’s body easily yielding to
him, his mouth opened on a gasp.
“M-Makki you feel so good”, he murmured, bending to kiss his lips.
“Mattsun”, Hanamaki called, looping his arms around his neck. “I… it’s better
than I thought it’d be”, the Omega admitted sheepishly.
Matsukawa smiled, peppering his face in kisses before starting to thrust –
gently at first, but Hanamaki was taking him so well he couldn’t resist setting
a faster pace that made the Omega go crazy, tightening on him as his voice
rose, his hands bruising his hips. He came first with a raucous cry, his knot
sealing their embrace as he savagely bit Hanamaki’s throat, the thin skin
breaking easily under his teeth. He felt the Omega tremble in his arms as he
came as well, rising instinctively to bite him in return – and hell it hurt but
it felt so good. Matsukawa tightened his grip on his mate, cuddling as they
caught their breath.
“You’re mine”, Hanamaki giggled against him, snuggling closer.
“And you’re mine”, Matsukawa answered, kissing his neck and cheek, intertwining
their fingers. He pulled the covers up their naked and still connected bodies,
soon falling asleep.
Because sometimes, Nature didn’t mind getting some help.
End Notes
     Okay how did I get so cheesy?
     I hope you liked it, as usual don't hesitate to comment and tell me
     what you thought of it!
     Next pairing will be Moniwa and Yamagata, as I was asked!
     I'm also thinking about doing a second part for Kyoutani and Kenma,
     adding Yahaba to the mix, before the final part. Yahaba as an Alpha
     from another village. And I'd like to know what you think of it! You
     can tell me either here or on my tumblr, bittodeath.tumblr.com!
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