Posted originally on the Archive_of_Our_Own at https://archiveofourown.org/
works/692666.
  Rating:
      Explicit
  Archive Warning:
      Underage
  Category:
      M/M
  Fandom:
      Katekyou_Hitman_Reborn!
  Relationship:
      Gokudera_Hayato/Yamamoto_Takeshi
  Character:
      Gokudera_Hayato, Yamamoto_Takeshi
  Additional Tags:
      Topping_from_the_Bottom, Awkward_First_Times, Ten_Year_Bazooka, Timeline
      What_Timeline, Katekyou_Hitman_Reborn!_Kink_Meme
  Stats:
      Published: 2013-02-20 Words: 2712
****** In a Few Years ******
by blueberry
Summary
     Ten-years-later Gokudera is, in many ways, all too different from the
     guy Yamamoto had thought he knew so well. He doesn't much like what
     it might imply about his relationship with the regular Gokudera.
Notes
     Request: In a switch from the norm, Yama/TYL!Gokudera or TYL!Goku/
     Yama - Unexpected fondness. Bonus points if it's in the time when TYL
     Goku shows up in the past ^^
     This fic has very little to do with the canon version of TYL - it's a
     little AU for the sake of kink meme PWP.
 
"You've never had a photo taken where you're out of a uniform, your favourite
drink is ... what was it at this point, milk, the only English you can be
depended on to remember is that stupid ballgame song, and..." The man leaning
against Tsuna's desk looked down irritably at Yamamoto. "Can't you get a weird
tattoo somewhere out of sight so we don't have to prove things like this?"
Yamamoto stared at the familiar lines of his frown and then at Tsuna. "It
really is Gokudera!"
Tsuna flailed at him, but a lot less than Yamamoto would have expected of him
under the circumstances. He was keeping so calm you could almost believe he was
used to unexpected time-travellers. "You recognised him when you first saw him!
Why is it hard to believe now?" Tsuna said.
"But then you pointed out how tall he is! It wasn't like I could keep thinking
it was Gokudera after that. " Yamamoto turned back to stare at the strange and
familiar adult version of Gokudera. "How'd you do it?"
"I'm from ten years in the future. Seriously, it's true. I'm doing experiments
with time travel, and seem to have made a couple of mistakes when I made
adjustments to ... the machinery."
"Wow!" said Yamamoto, and struggled to keep from saying it a second time. He
was nearly gaping at Gokudera with his mouth hanging open, but if he did it
would lead to a long rant about how dumb he was, and this was not the moment
for it. "I didn't know you were that smart!"
"Yeah, well, maybe I'm not." Gokudera shrugged irritably. "I'm pretty sure all
I managed to do was set that damn bazooka to keep me here for fifty hours
rather than five minutes."
That got rid of Yamamoto's urge to stare and stare at him, because it started
feeling like this must be a prank after all. "Bazooka?"
"Ah!" said Tsuna. "Ahaha! Not like Lambo's ten-year-later bazooka! Because it
would be silly if that thing could really make you travel in time!"
Gokudera sighed, then snickered. "Right, of course. The ten-year-bazooka is
just a toy!" he said, and then he reached out - and ruffled Yamamoto's hair. He
was hardly ever in a good enough mood to do that! But it was better than having
an angry adult Gokudera, who probably did carry dynamite instead of fireworks
by now. "I call my time machine a bazooka in honour of that 'silly toy' Lambo
was always carting around. My little joke." He rolled his eyes, then turned to
Tsuna. "That said, it's not funny that I'm stuck here. I'm really sorry for the
inconvenience, Tenth."
"You don't have to be, honestly!" Tsuna put his hands up in awkward protest,
looking embarrassed at how respectful the adult was being. "Anyway, that's why
we decided to tell you the truth about all this, Yamamoto. There isn't any room
left here in my house, so we were wondering if Gokudera-kun - I mean, Gokudera-
san could stay at your place while he's in this time. If your dad doesn't
mind..."
"We could tell him I'm the cousin of my younger self," said Gokudera.
"Something like that."
Yamamoto grinned, excited. "This is so cool! Sure, my old man won't mind. I
definitely--whoa, kid--!"
Ten seconds later, Reborn had Yamamoto and Gokudera standing by the back door,
both dizzy, and very sternly told them to play nice and get out of the way
before Maman saw them and asked awkward questions. The kid had kindly provided,
from out of absolutely nowhere, a few changes of clothing for Gokudera. This
included a tie and a black jacket to replace those he'd left in the future,
completing the formal-looking outfit he was wearing.
Yamamoto looked at the rest of clothes draped over Gokudera's arm. "Nice
dress," he said as they started walking, and laughed. "The kid really does want
you to be prepared for anything."
"How does he even know my size?" Gokudera said, unnerved as he checked the
dress's label.
"Is the pot plant costume in the right size too?"
Gokudera stopped looking through the clothes. "I'd rather not find out."
Yamamoto's looked him over, taking in the polished leather shoes with their
well worn creases, the glasses that Gokudera had tucked into the breast pocket
of his jacket, and all the earrings. He liked those - they made the man seem
like he was the same Gokudera after all. "So you weren't working on the time
machine at a laboratory, right? You look like you were at some fancy business
meeting."
"I was in my workshop. I wear what I like in there." Gokudera frowned. "It's
lucky we don't have any meetings scheduled for the next two days. My younger
self shouldn't inconvenience the Tenth too much right now. I hope."
Yamamoto's face lit up. "You still know Tsuna in ten years' time? Am I around
too?"
Gokudera smiled. "Yeah. You're around."
"What are we doing? Is it cool?" He felt himself getting into the kind of
pumped-up mood that would make Gokudera yell and not answer properly. With the
normal Gokudera that was okay - it was usually fun - but he felt kind of
ridiculous next to the adult Gokudera in his suit.
To his surprise, Gokudera didn't yell. The smile even lingered around the edges
of his mouth. "Don't do anything stupid for the next ten years and you'll be
there to find out."
"I don't think I could do anything that dumb," he said (and added to himself,
always remembering that day Tsuna had saved him, again).
Gokudera got a longsuffering look. "You'd be surprised." Then he grinned at
Yamamoto, and they laughed at the joke together.
It was a surprise how strange it was.
He thought about it after dinner, while he lounged about his room as Gokudera
had a bath. His dad had barely paid attention to the cousin cover story - isn't
it funny that Gokudera-san dropped by for visit right when Gokudera-kun
happened to go out of town, ha-ha - in his eagerness to treat a guest well.
This Gokudera had got along with his dad way more easily than the younger
version did. It was a lot like the way that Gokudera was with him. It was nice,
but ... different. The older Gokudera told jokes he and Yamamoto could both
laugh at, and didn't say a word against staying at his house. The younger
Gokudera would have been really loud about how he'd prefer to stay at Tsuna's.
Yamamoto flipped through a comic book without paying it much attention,
settling deeper into the pillows stacked at the head of his bed. He was glad
that in ten years time, he and Gokudera would be able to get along and have it
be easy like this. But what did it mean about right now? Did it mean the young
Gokudera was serious about being annoyed at him all the time? Did he really
want Yamamoto to leave him alone?
Maybe they weren't friends. Ten years, and maybe then they'd be friends like
he'd always thought they were. Yamamoto dropped the comic book over the side of
the bed and frowned into his thoughts.
--
The bath helped Gokudera to submerge lingering feelings of guilt and
frustration. There was nothing he could do about this situation but wait for it
to be over. Besides that, he was sick of trying to figure out whatever the hell
it was the Bovino famiglia had done to that bazooka. He called to mind all the
times when Tsuna had said he needed to take more breaks, and virtuously sank
into relaxation and hot water.
It occurred to him that maybe he was a little too relaxed as he walked into
Yamamoto's bedroom with only a towel around his waist, and Yamamoto sat up and
blinked at him from the bed. The younger him wouldn't have felt comfortable
doing this. Whatever. Yamamoto had never been the kind of guy to be bothered by
it.
Except... Something occurred to Gokudera, and he stopped pulling the pyjamas
out of his stack of folded clothing. He turned slightly, and from the corner of
his eye saw that Yamamoto's eyes had got even wider, and the boy was trying to
stare surreptitiously at him.
Gokudera grinned. "You already have that crush on me?"
Yamamoto made incoherent noises - some protest, some assent, mostly
embarrassment. It was satisfying, when he thought back to how annoyingly
collected Yamamoto had always been when they were kids.
He removed the towel around his waist slower than it warranted and made a show
out of drying his hair, even though he'd already done so in the bathroom. He
glanced over his shoulder, and grinned wider at the sight of Yamamoto staring
openly. "Want to do something about it?"
"Huh?" said Yamamoto. He couldn't seem to close his mouth.
Gokudera turned around, slinging the towel round his neck, and watched
Yamamoto's eyes go up and down and his cheeks get redder. Yamamoto tried to
speak, but the only sound he made was a deep sigh.
"Do you want to do something about that crush of yours?" Gokudera repeated.
"Indulge it a bit?"
Yamamoto looked at him with the same frank stare he'd have in later years. It
was always a little embarrassing, but Gokudera had got used to it. Even though
he was a teenager, Yamamoto didn't go back to ogling, instead staring into
Gokudera's face like he could barely believe something so amazing.
Gokudera refused to say that Yamamoto was cute. It would come back to haunt
him.
He chucked the towel away and sauntered closer. "Is that a yes?"
Yamamoto swallowed visibly. "Yes. Um, please. Yes."
It was too bad he'd just bathed, but what the hell. Gokudera straddled Yamamoto
on the bed, smirking as he went for the fly of his trousers. "Get rid of that
shirt."
Yamamoto's cock was already paying a healthy amount of attention to
proceedings, and Gokudera felt himself catching right up at the sight. He
sighed when he glanced up, distracted as he tugged underwear and pants off
ankles by the sight of Yamamoto's torso. Only the oldest scars were there;
compared to what would come, they were hardly worth mentioning. It was good to
see, also, that Yamamoto already looked strong.
He tossed the clothes and moved forwards. Yamamoto sat propped up against
pillows, so Gokudera had to bend only a bit to mash their mouths together. With
Yamamoto at this age kissing would be a mess, so he might as well make it the
best kind of mess, with a little biting and fighting. The kisses were sloppy
and eager like they rarely were anymore, and he couldn't help smiling into it.
Yamamoto barely noticed, because Gokudera ran a hand down his chest, down his
belly and further down and almost there and then darted back up to pinch a hard
nipple.
Yamamoto made a noise that meant he loved it, but then said, "Hey, no fair!"
Gokudera laughed.
"Hey, yourself. Get your hands off my shoulders. Do something."
It was just as well he'd had the bath, after all, because if he'd been dressed
Yamamoto would probably have been confounded by buttons and zippers for minutes
on end. His hands couldn't stay still, sliding everywhere in eagerness.
"Gokudera," he said, like someone on the verge of a great adventure.
"Want to go all the way?" His hand slipped around Yamamoto's thigh and squeezed
his backside.
"Aah-!" Yamamoto looked at him with wide eyes, and Gokudera grinned back a
challenge. "I..." Yamamoto squirmed under his touch, red-faced, unsure, but he
couldn't look away from Gokudera's grin. "Okay. Okay."
Gokudera grabbed the bottle of lotion off Yamamoto's bedside cabinet and
squeezed a glob into his hand, then slicked it over Yamamoto's fingers. "I'll
show you what to do."
"But then wouldn't I be... Hey, I didn't mean - um. You can ... do it the other
way around. I can take it," said Yamamoto, frowning like he'd been insulted.
"Think what you're complaining about," Gokudera said.
"But I can—"
"You will take it. Repeatedly. Trust me." Gokudera grinned wolfishly. "But for
now it could be easier."
"Really?" Like all his dreams had come true at once. Well, he was at the age
where that was probably mostly true.
"It's your birthday present this year," said Gokudera. "Otherwise I'm pretty
sure you'll just get week-old takeout."
Yamamoto put his arms around Gokudera's neck and kissed him with a breath of
laughter. What a kid. If it wasn't for the fact that he often acted a lot like
this ten years later, Gokudera would have felt guilty. He grabbed Yamamoto's
slicked-up hand and pulled it down, parting his thighs with his other hand.
"One finger at first. Get in, since when were you shy?"
"This is so weird," Yamamoto said into his shoulder, and got distracted kissing
him there and up along his neck.
"Second finger. Pay attention!" He pushed Yamamoto away a bit as the boy
discovered that he could move closer and straddle Gokudera's thighs to press
their arousals together with explorative thrusts.
All that enthusiasm. It made Gokudera eager in turn, and he said, "Third finger
in - and out, and in - good. That's fine. And now..." He pushed Yamamoto back
again and positioned himself on hands and knees on the bed, clutching the sides
of the narrow mattress. "You know what to do."
Yamamoto practically fell on him, and he smiled as he looked over his shoulder
to watch as Yamamoto guided himself in with one hand. The boy winced as he
pushed in, not breathing.
"Don't come yet," Gokudera said, though he didn't have high hopes. "Try and
keep going a while." He might not even mind, though, if it was over soon; as he
felt that pleasant stretch and burn of Yamamoto entering him more fully, he
stared as Yamamoto's lip quivered even though he bit it, brows drawn down in
concentration over his heavy-lidded eyes. Cute. Handsome, even. He wouldn't say
it.
"Go harder," Gokudera suggested.
"But then I'm gonna come." Yamamoto's voice was coiled tight, and punctuated
with a thrust equally careful and restrained. Gokudera propped himself up on
one elbow, got his balance, and wrapped his free hand around his shaft with an
appreciative sigh.
"Okay, slow," he agreed.
Achingly slow, his hand moving in time with Yamamoto's thrusts, the hands on
his hips relaying trembles of tension along with Yamamoto's thighs as they
brushed his. "Gokudera," Yamamoto said helplessly, all of a sudden, and came
with a violence that didn't match their pace. His body arched over Gokudera's,
tense as a bow, and then Yamamoto tumbled off him, breathing hard and eyes
bleary.
Gokudera turned onto his back and changed the pace of his hand to what he'd
wanted, hard and fast, and even if he imagined a couple of the kind of thrusts
he wished Yamamoto had given, he saw that overwhelmed, intent face from a
moment ago.
As soon as he was done, Yamamoto shifted closer, and Gokudera moved towards the
wall to give him room. They negotiated silently for the pillows, pulling and
prodding until they were each comfortable. The space offered by the futon on
the floor would have been nice, but the bed was softer, so Gokudera was already
drifting off when there was an announcement from beside him.
"Gokudera. I'm going to ask something. Don't hit me."
He bit back a laugh. The older Yamamoto would probably love to use that
disclaimer sometimes. "Then don't say anything stupid."
"I'm serious," Yamamoto said, so low and intense he sounded angry.
Gokudera put his arm over his eyes and said, "Ask, then."
A pause, and then Yamamoto blurted out: "Do you like me?"
"Not particularly," said Gokudera. "Give it a couple of years." He sat up and
cupped Yamamoto's face with both hands to turn his face and kiss him lightly,
sweetly.
"Gokudera?" Yamamoto said, voice cracking in the middle of it.
He snorted as Yamamoto gaped at him, open-mouthed and bug-eyed. "That's the
dumbest face I've seen even on you. I'm going to sleep." He lay down with his
head on his crossed arms and smiled as Yamamoto began to laugh, astonished and
satisfied.
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