Posted originally on the Archive_of_Our_Own at https://archiveofourown.org/
works/8506954.
  Rating:
      Explicit
  Archive Warning:
      Underage
  Category:
      M/M
  Fandom:
      Haikyuu!!
  Relationship:
      Kozume_Kenma/Kuroo_Tetsurou
  Character:
      Kozume_Kenma, Kuroo_Tetsurou
  Additional Tags:
      Friends_to_Lovers, Fluff, Smut, Fluff_and_Smut, Soulmates, Soulmate-
      Identifying_Marks, soulmate_tattoo, SoulmateTattoo!Au, Moving_Tattoo(s),
      Alternate_Universe_-_Soulmates, Lev_is_mentioned
  Series:
      Part 1 of Your_Soul_On_My_Skin
  Collections:
      Too_good_for_this_world
  Stats:
      Published: 2016-11-08 Words: 3693
****** Like Schrödinger's Cat ******
by YeoulStarburry
Summary
     Everyone has a tattoo on their body which describes the personality
     of their soulmate. It changes based on their interest, on the
     experiences they make and the mood they have. It can be anything and
     any size and it’ll only stop changing and fade out when your soulmate
     dies.
     Sometimes your soulmate can be at the end of the world and you might
     never find them, but sometimes they are the kid next door, the person
     who’s always been beside you, your rival or someone from the same
     school club.
     Kenma knew Kuroo almost his whole life. They spent each day together
     and knew everything about each other. Almost everything. There was
     one thing he couldn't be sure of without asking and he was dying to
     know: Was Kuroo his Soulmate? As it was now, the whole situation felt
     like the concept of Schrödinger's cat. And he really wanted to open
     that box.
Notes
     Hello there~
     So, I somewhere read something about Soulmate Tattoos and thought it
     was a really cool idea. It kind of stuck with me and then my Yaku-Bro
     dragged me into Haikyuu hell and before I knew it I had written down
     some tattoo ideas for some of the characters. And now here we are! I
     had some trouble writing this (especially the smut, orz) and I am not
     sure about this, but I give it a try I guess? It's not as bad as I
     thought it would be.
     There will be more One Shots like this with other pairings, but I
     have to see when I get the motivation. Anyways, I rambled on long
     enough.
     Enjoy!
See the end of the work for more notes
Game over. Again. It wasn’t even a hard level, he had it cleared multiple times
before and just went back because he needed an item. But Kenma couldn’t
concentrate today. Sighing a bit frustrated he turned his PSP off and sat it
down on the nightstand.
Kuroo, who laid next to him, looked up from the book he was reading. “Are you
alright?” He knew that normally Kenma would be absorbed in his game for at
least another hour. Kenma just sat up, pulled his knees to his chest and nodded
absentmindedly, his fingers slowly tracing over his side where his soulmate
tattoo was today. It changed position rather often…
Now Kuroo sat up too, crossing his legs as he looked at the pudding head next
to him. “Something is bothering you.” Kenma didn’t look up and for a while none
of them said anything. Of course, his best friend would notice something was
up. They’ve known each other almost their whole life by now.
Kenma still remembered the day they first met. He had played by himself, like
always, when a ball rolled against his feet. A boy around his age ran after it.
He had ridiculous, black bed hair and a wide grin. And something about him
reminded Kenma of a cat.
As the other boy stood in front of him, the small cat tattoo, which had sat on
his arm until then, started to move. It left a warm trail as it started to
crawl up his arm and came to a stop on his chest. From that day on it started
to move quite a lot and it sometimes took Kenma a while to find it again in the
morning.
Kuroo wouldn’t leave him alone from that day on. He never had a problem with
Kenma being quiet or just playing video games all day long. It was easy and
Kenma appreciated it until this day.
With a sigh, he raised his head a bit, now looking at his best friend again.
“Well… Lev asked me today how you recognize if someone was your soulmate. He
just assumed that… we were soulmates.”
There was a moment of silence again. It was something they somehow had never
talked about. There never had been a reason to. They were both content like it
was, at least Kenma had always felt that way. But since Lev brought it up the
question “What if we are?” stuck in his head. He never really saw Kuroo’s
tattoo, only glances of it. One time they went to the beach with their parents
when they were younger. Back then Kuroo’s tattoo had been kind of blurry and he
said it always had been that way. So Kenma never asked about it again.
He knew that it wasn’t blurry anymore. He saw it in the locker room sometimes.
So maybe it was time to speak about it? Kenma was sure that Kuroo was his
soulmate. Or at least he hoped so. His tattoo was pretty simple, but so was
Kuroo.
As it was now, their relationship was like Schrödinger’s cat. They were
soulmates and weren’t at the same time, and they wouldn’t know until they
opened the box. And Kenma really wanted to open that box.
“Guess there’s only one way to find out.” Kuroo said finally and before Kenma
could respond, the older one already took his shirt off. The pudding head
blushed a bit and averted his eyes. It wasn’t like he had never seen Kuroo
without a shirt on, but this time it felt… different.
“You have to take off your shirt too, you know?” The raven-haired chuckled a
bit.
Kenma gave him an annoyed look before taking his shirt off too. Kuroo’s eyes
were on him, watching his every movement. It was a bit embarrassing. And Kenma
thought was unfair, Kuroo’s body looked so much better with his muscles and
well defined abs and… Compared to that Kenma looked even less than average.
Normally he didn’t mind but now he was too aware of that.
For a moment, they both sat there in silence. It was the elder who spoke up
again first. “So, where is it?” Kenma frowned a bit and looked down on himself.
He had been so nervous that he didn’t even noticed when the tattoo moved on his
body. It wasn’t nowhere on his front so he turned his back to his best friend.
“It should be there somewhere.”
Kuroo didn’t answer immediately. Normally the silence between them was never
uncomfortable. Actually, it always was the opposite. But now it made the blond
uneasy. That was until he felt slightly rough, familiar fingers running over
his back ever so softly. It sent a shiver down his spine. Kuroo had touched him
countless of times by now, holding his hand so that he wouldn’t get lost or
stroking his hair absentmindedly while reading. The latter was something he
really enjoyed, although he would never admit it. But this… felt different. He
wasn’t sure if it was because the other touched his tattoo directly or because
it was just Kuroo touching him in such a soft way. Either way, it felt rather
good.
“It’s… simple.” Kuroo concluded and smiled fondly. It wasn’t his trademark
smirk, the one he often had while teasing or annoying people. Kenma couldn’t
see it in his current position, but he could hear it in Kuroo’s voice. He
blushed slightly at the thought of Kuroo smiling like that and tilted his head
a bit forward to hide his face behind his hair. An unnecessary act, since the
other wasn’t able to see his face anyway, so it was more out of habit than
anything else.
The volleyball captain pulled his hand away and Kenma almost protested at the
loss of contact. Almost. “Do you think it’s me? A cat playing with a volleyball
isn’t that conclusive.”
That was exactly the reason he never brought it up before. The black cat had
been on his body since his birth and at one point a Volleyball appeared. The
cat often played with it or sat on top of it. It was cute and often reminded
him of Kuroo, but it was still scary. There was still that piece of doubt in
his mind that left him unsure. “I hope it’s you…” Kenma admitted quietly after
a while. “You always reminded me of a cat.” Kuroo started laughing behind him
and if it would’ve been someone else it would have made him feel uncomfortable
and overly self-conscious. Not now though, now it just made him feel at ease,
made his heart flutter slightly, made him feel warm.
Kuroo gently placed one of his hands on Kenma’s shoulders and turned him around
so they were facing each other. Their eyes interlocked and the setter noticed
how relieved his best friend looked at him. Like a weight has been lifted off
of him.
Kenma was the first to break eye contact. It was now that he dared to look at
Kuroo’s chest and normally he might’ve blushed a bit at the sight of the well-
developed muscles, but now something else caught his attention. His eyes grew a
bit wider in surprise. He had seen some tattoos of other’s before. They even
showed some at school as they were explained to them properly. But it was
different looking at a tattoo that described someone else than looking at one
that showed your own personality.
The tattoo on Kuroo’s chest showed a slice of apple pie with a PSP next to it.
He could see some sort of keychain in form of a cat attached to it, which
looked similar to the cat on Kenma’s own body. It looked kind of out of place
on someone like Kuroo and the pudding-head felt the corners of his lips rising
slightly.
“What?” Kuroo asked, seeming to have noticed the change in his expression.
“It’s… kind of obvious.” Honestly, the only thing Kenma was more attached to
than his games was probably Kuroo. And he ate apple pie on a regular basis.
Since he turned 6 he got pie for his birthday instead of a cake. Kuroo even
baked one for him whenever he was sick, when his stomach allowed it, knowing it
would make him feel better.
It might have been the setting sun shining through the window, but Kenma
could’ve sworn Kuroo blushed slightly. “Well… I always thought it was you, but,
y’know…” He took a deep breath before he continued talking. “Us being soulmates
doesn’t mean you want to be with me. That thought kind of scared me.”
For once it took Kenma’s brain a moment to catch up. So, all this time he had
been worried about that? There were cases where soulmates stayed friends, found
someone else they would date and maybe have a family with. The Kozume family
was like that, so maybe Kuroo thought Kenma would be like that too?
The elder was his best friend, he would always be. Although, if he was being
honest he always felt something more towards him. For a long time, he didn’t
have any other friends. Now he had his team who were probably his friends by
now. But even as he got a bit closer to them, he still saw Kuroo as his best
friend. Then he met Shouyou. And if he was being honest, Shouyou was closest to
being a good or even best friend by now. Even if he was a bit much at times, it
was easy to talk to him. Kuroo however was so much more than any friend could
ever be. It didn’t matter to Kenma if it was because the universe or whatever
decided they belonged to each other’s side or not, it just always had been the
two of them.
Instead of answering, Kenma moved forward and closed the distance between them
until their lips were touching. It was so soft and fleeting, it couldn’t even
be called a proper kiss. But it was all he could muster right now. Obviously
Kuroo seemed to like him in the same way, but it was still nerve-wracking to do
the first move.
When they separated again, Kenma let his hair fall forward to hide his face
again, to hide the redness that was spreading on his cheeks. He didn’t dare to
look up. They both sat in silence, none of them moving, until gentle hands
cupped his head and made him look at Kuroo again. Who was smiling at him
fondly. “I really didn’t expect you to do that.”
Kenma couldn’t help but roll his eyes at that. “Just because you can’t get your
ass up to do something, Idiot.”
Kuroo’s expression changed and his shit-eating smirk returned as he leaned in
closer. One could feel the shift in the atmosphere. “Then maybe I should do
something, huh?”
Before he could respond his soulmate’s lips where on his own again. At first
they were just pressing their lips together a bit awkwardly. Both of them never
kissed anyone before after all. Soon Kuroo’s lips started to move on his and
big hands grabbed Kenma’s waist to pull him closer. After a moment of
hesitation, the setter started to kiss him back in the same manner and wrapped
his arms around the taller one’s neck, one hand playing with the dark hair as
he indulged in the kiss. At some point both of them had their eyes closed.
It wasn’t long until Kenma felt a tongue pressing against his lips, asking for
entrance. He opened his mouth slightly and the wet muscle started exploring his
mouth. French kissing felt other than he had imagined (and he had imagined this
a lot), but in a good way. In a very good way. His mind started to get clouded
as warmth spread through his body and he let his own tongue play with Kuroo’s,
all hesitation forgotten.
Eventually Kuroo pulled away and Kenma mewled softly. “God, Kitten. You’re too
cute.” He said it with so much adoration in his voice that the younger couldn’t
even complain about the, in his opinion, unfitting nickname. Instead he settled
on “Just shut up.” and pushed the other down onto the bed before straddling his
hips.
“Eager, are we?” Kuroo chuckled lightly. Then he pulled Kenma down in an
embrace and nuzzled his hair. “But we don’t have to go all the way if you don’t
want to.”
Sometimes he forgot what a softie this big dork could be. “I want this. I’ve
wanted to for a while now.” Kuroo’s eyes grew wider as Kenma looked away. By
now he had given up on hiding his blush. “You did?” His voice was quiet but
clearly clouded by lust. It sent a shiver down Kenma’s spine.
Without waiting for an answer the raven turned both of them around so that
Kenma laid beneath him. Without wasting another second Kuroo’s lips were on his
again. For a moment, they kissed passionately before the elder moved downwards
and bit down at the sensitive skin of his neck, leaving a few hickeys there.
That was already enough to cause Kenma to moan softly.
Kenma’s hands found the black mess of hair as the other moved down further to
lick over one of his nipples, which caused a jolt of pleasure to run through
his body. Kuroo seemed to notice that, because he could feel him smile slightly
against his skin before he kept licking and sucking at the nub. His hands
slipped into the younger one’s trousers and kneaded his butt, causing their
hips to grind together, which lead Kenma to let out the sounds he had kept in
until now. The setter could clearly feel that his soulmate was hard already.
Not that he was any better.
“Kuro, please.” Said gave his nipple another, particularly hard suck before he
moved away to look at the boy beneath him. It was obvious that he thought about
asking ‘please what?’, but Kenma looked at him in a way that made him not
wanting to wait any longer.
Kuroo reached over to one of the drawers of the night stand pulled out a bottle
of lube and a condom. Kenma could ask why he had that in there, but he would
lie if he said he didn’t hide a similar bottle beneath his bed. Both items were
place next to him and then hands started to undo his pants. Before he pulled
them down however, he looked up once more as if to ask that this was really
okay. There was no verbal answer, but apparently the look in his eyes was
enough of an answer.
Kenma probably never had been faster out of his pants, including underwear than
ever before. A relieved sigh escaped him as his erection was freed and soon
enough a warm hand wrapped around it and started to stroke it, smearing the
precum from the head down the shaft, making it glide through his hand so much
better. With his building up arousal clouding his thoughts he only felt
slightly embarrassed at his state of nudity. But even that vanished when he
felt a finger covered in lube rubbing at his entrance teasingly, before slowly
pushing in, causing Kenma to moan inside the back of his hand and shut his
eyes. Kuroo gave him a moment to adjust, then thrusting his finger in and out.
As soon as he felt he loosened up enough, he inserted a second finger and
scissored him open.
“Kuro, Kuro please… put it in.” Kenma was surprised by how lewd his own voice
sounded and even more that he, of all people, was the one to make whisper a
needy “fuck” as he pulled his fingers out and abandoned his cock in order to
get rid of his own pants.
Kenma watched as Kuroo’s cock sprang free and he gulped a bit as he saw the
size. He imagined Kuroo to be big, but actually seeing it in front of him was
something different. “Everything okay, kitten?” He forced himself to look into
Kuroo’s face at that and was met with an overly amused smirk. The pudding head
just pulled him into a deep kiss. “Perfectly fine.” He breathed against the
raven’s lips and made him shiver. Now it was his turn to grin slightly. No
matter how much Kuroo could rile him up, Kenma had just the same effect on him.
The captain quickly put the condom on and put some lube on his member, then
spread Kenma’s legs and positioned himself. He slowly pushed inside, taking his
time as to not hurt Kenma. At some point the setter’s hands had found their way
to his shoulders, digging his nails into his skin. When Kuroo was fully seated
inside both let out a shaky breath. “Tell me when you’re ready.” He whispered
into the blond’s ear and slowly kissed a trail down to his neck as he tried not
to move too much.
It took Kenma a while to get used to the feeling of something of that size
inside of him. It was nothing compared to the fingers that opened him up
before. But soon the feeling of it not being enough settled in and he told
Kuroo to move.
It started out slow and it hurt a bit at first, but it got better as Kuroo
started to stroke him again. Soon pleasure spread from his abdomen throughout
his body and his voice grew louder. At this moment he was really happy that
Kuroo’s parents worked until late, because he wasn’t sure if he would be able
to keep his voice in.
The thrusting gradually grew faster and harder, and when Kuroo angled his hips
a bit and hit a certain spot inside of him dead on, Kenma almost screamed out.
The raven-haired stopped for a moment and wrapped one arm around Kenma to pull
him closer. His other hand held his hips as he started to thrust into his
prostate over and over again.
By now the smaller one clung onto Kuroo, scratching his back open
unintentionally. In their current position the other’s mouth was right next to
his ear. So he could hear every sound, every moan that escaped him and Kuroo’s
voice was almost too much for him.
“K-Kuro, I’m… I’m gonna…” He wasn’t even able to finish the sentence anymore.
“It’s fine Kitten. Come for me.” Kuroo murmured into his ear and started
stroking him again. And that was all Kenma needed to reach his climax. He came
with a loud moan and he was sure he never came that much in his life. It only
took Kuroo a few more thrusts until he came buried inside Kenma and collapsed
on top of him.
For a moment both of them laid there and enjoyed the afterglow, until Kenma
weekly tried to push him off. “You’re heavy.” Kuroo snorted, pulled out and
rolled off of him. “That’s not how you treat your boyfriend.”
Kenma’s eyes grew wide at that and his face, that had just cooled down a bit,
got red again. It took Kuroo a moment to catch up with what he just said. “Oh,
uhm… sorry, I… just assumed…” A soft smile spread on Kenma’s lips and he kissed
Kuroo softly. “I like that. Being your boyfriend.”
Kuroo let out a relieved sigh and placed a kiss on Kenma’s nose before he got
rid of the used condom and grabbed some tissues to wipe his now boyfriend
clean.
As he laid down again Kenma immediately snuggled close to him. For a while they
laid there in silence, each of them lazily tracing their partner’s tattoo.
Kenma was about to drift off to sleep when he heard Kuroo say “Did it always
look like this?”. It took his tired mind a moment to get what he meant, but he
still asked just to be sure. “You mean the tattoo?” The only response was a low
hum, telling him yes, that’s what he meant.
“It was smaller in the beginning and didn’t move at first. Somewhere during
middle school the volleyball appeared. And the cat is behaving differently
depending on how you feel I guess.” He was too tired to explain it any further
or come up with an example. But from now on he could show Kuroo if it changed,
they would stay with each other forever anyways. They’d have plenty of
opportunities to get to know their tattoos better.
“Mine changes as well sometimes.” Kuroo said quietly as his fingertips stroked
up and down Kenma’s spine. “Like, the device changes sometimes. And it shows
your favorite game now and then. Remember when you were really addicted to
Kirby? I had that stupid thing on my chest for half a year.”
Kenma remembered that. It was Kuroo’s first year in High School, so all of his
new teammates probably saw it. He had to chuckle a bit at the thought. “Don’t
laugh. It was awful.” Yeah, he could imagine. If he remembered correctly Kuroo
bought him a few games back then, probably hoping he would get rid of that
pink, everything eating ball.
“Also…” the middle blocker began slowly and he could hear the smile in his
voice, which cause Kenma to look up at him. Kuroo brushed a few strands out of
his face and looked at him fondly. “They keychain. Right now it’s a cat, but
sometimes, after a really good game, it’s a volleyball. I was worried you
really didn’t like playing volleyball, so it made me happy seeing that.”
That’s… not what he expected. He never really enjoyed Volleyball, it was
tiring. But something always kept him doing it. “I don’t like it. But I also
don’t dislike it.” Kuroo laughed and whispered an “I know” into his hair.
Kenma rested his head on Kuroo’s chest and closed his eyes. After a few
seconds, he was already half asleep, and his last thought before he drifted
into the world of dreams was that he was really, really happy that they opened
the box.
And that the cat was alive.
End Notes
     I hope you liked it!
     I'll love you forever if you leave some Kudos and/or comments... or
     cookies.
     Hope you have an absolutely fantastic day <3
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