Posted originally on the Archive_of_Our_Own at https://archiveofourown.org/
works/8102821.
  Rating:
      Explicit
  Archive Warning:
      Underage
  Category:
      M/M
  Fandom:
      僕のヒーローアカデミア_|_Boku_no_Hero_Academia_|_My_Hero_Academia
  Relationship:
      Bakugou_Katsuki/Shinsou_Hitoshi
  Character:
      Bakugou_Katsuki, Shinsou_Hitoshi
  Additional Tags:
      Summer_Lovin'_AU, Fluff_and_Smut, Yuuei_Third_Year, canon-typical
      vulgarity
  Stats:
      Published: 2016-09-21 Words: 1963
****** hot days of summer ******
by Ramabear_(RyMagnatar)
Summary
     In the summer heat, Hitoshi embraces the sun that comes creeping in
     his window unexpectedly. Things are always a little hotter when
     you're dating someone as intense as Bakugou Katsuki.
Notes
     Underage tag is bc technically they're only third year Yuuei yaknow
     also this is my 100th posted fic. how about that shit. it was gonna
     be a completely other piece but whatever now its this one. and
     honestly its kind of hilarious that its this one. ayyy
Hitoshi woke from his nap to the rattling of his window being opened.
He blinked slowly, rolling over with an annoyed mumble. Rubbing his eyes, he
expected to see his little brother, or perhaps his father, opening the window.
They had a habit of doing that when they found him napping in the summer in
bed. Hitoshi’s shared room was near the vent of the oven from the floor below,
keeping it warm in winter and making it toasty in the summer.
Except there was no one reaching across his bed. There was someone opening the
window from the outside.
Hitoshi sat up quickly, heart leaping into action. It didn’t matter to his
sudden paranoia that he was on the second floor and that there was barely
enough windowsill to stand on. What mattered was that someone was trying to get
in.
The glass slid up and Hitoshi stared at the intruder.
Katsuki smirked back at him. He hefted himself up with his arms and slid in
through the open window, landing in a tumble across Hitoshi’s legs and the bed.
Once he was inside, he pushed himself up and said, “Hey.”
“Katsuki,” Hitoshi said in quiet shock, “What?”
“I noticed the last time I came over to study that you keep your window
unlocked. So I figured this would be the easiest way to come see you whenever I
wanted.” Katsuki explained simply while adjusting how he sat so he wouldn’t get
a knee in an annoying place. Unfortunately, or perhaps fortunately, this meant
he ended up straddling Hitoshi’s thighs.
It was hot and so Hitoshi wasn’t wearing much, just some short shorts and a
thin sleeveless shirt. Katsuki wasn’t in much more, and so when he sat, his
bare legs rubbed against Hitoshi’s.
“Am I dreaming right now or is this really happening?” Hitoshi wondered. He
hadbeen asleep. This could just be a very vivid dream.
Katsuki’s smug look increased tenfold, “Do you often have dreams of me crawling
in through your window?”
“Less the window,” Hitoshi said, “And more this.” He gestured to Katsuki’s body
on his lap. Hitoshi rested his hand on Katsuki’s knee, running fingers over
surprisingly smooth skin. “You said you wanted to see me?”
Looping his arms around Hitoshi’s neck, Katsuki drew in for a kiss. “I guess
so, but that was kind of a lie.” He pressed warm, chapped lips to Hitoshi’s,
kissing him slowly. Pulling back, he said, “What I really want is to touch
you.”
“And you call me the pervert,” Hitoshi grumbled, grabbing Katsuki by the hips
to draw him closer, “You’re the one who climbed in my window just to kiss.”
“Not just kiss,” Katsuki said against his mouth. He slid closer, bringing his
knees up to straddle Hitoshi’s hips. He was heavy on Hitoshi’s thighs but there
wasn’t any way he was going to complain. Katsuki pressed one palm against
Hitoshi’s chest and urged him back. After a moment of resistance, Hitoshi lay
back. His heart rate jumped again as Katsuki, sitting on him now, lifted his
shirt up by the hem and pulled it off his body.
He wore tight shirts regularly, as there was nothing about his chest and arms
that he felt like he needed to hide, but Hitoshi always seemed to forget what
Katsuki looked like under the cloth every time. Because of this, he ended up
staring at Katsuki anew, his eyes moving slowly up and down his chest.
Katsuki had what Hitoshi politely called ‘peculiar traits’ now that they were
dating. One of those was his eternal rivalry with Midoriya. Once he had
discovered how hard Midoriya trained his body to use his quirk to the fullest,
Katsuki’s own strength training regimen had increased until he could take off
his shirt and look like a Greco-Roman marble sculpture Hitoshi had seen photos
of. Katsuki wasn’t even aiming for the ideal body himself. He just wanted to be
stronger than Midoriya.
As Katsuki tossed his shirt aside, Hitoshi reached up with reverent fingers,
skimming over hard abdomen and up to Katsuki’s ribs, his fingertips following
the curve of muscle over bone. He felt it when Katsuki shivered at the touch.
He saw Katsuki’s eyelids lower slightly. That smirk of his didn’t fade one damn
bit.
When Katsuki’s fingers curled around the cloth of his own shirt, Hitoshi didn’t
have any argument. He pushed himself up a little bit as Katsuki stripped him of
his shirt and tossed it aside without a word.
Katsuki leaned down after that and while bracing himself up with his forearm
pressed into the pillow beside Hitoshi’s head, began to kiss with unparalleled
intensity. Katsuki’s kisses, like his words, his personality, his everything,
were demanding and hot tempered. Hitoshi arched up when Katsuki bit his lips,
pulling on them with his teeth. He panted out a string of moans as his arching
back brought his hips up against Katsuki’s.
“Oh you like that, do you?” Katsuki teased, his breath hot on Hitoshi’s neck.
He mouthed down the skin there, making the hair on Hitoshi’s arms and the back
of his neck stand on end.
Hitoshi rolled his head back, exposing his throat for Katsuki’s mouth. It was
practically involuntary and his whole body tensed as he felt teeth work their
way down to his collarbone before leaving bruising bites across his skin.
Shuddering breaths stuttered out of Hitoshi’s throat as Katsuki worked his
mouth down across his chest, lower and lower still. The heat of the room was
nothing compared to the fire kindling in Hitoshi’s abdomen. His toes curled as
Katsuki had to slide down a little so his mouth could skim over Hitoshi’s ribs.
Burying his fingers in Katsuki’s wild hair, Hitoshi suffered through the
delightful sensations that ran through him. Katsuki was relentless in his
movements. They had burned through the hesitancy in the early months of their
relationship and now, in their second summer, the only thing that could keep
Katsuki at bay was Hitoshi’s reluctance.
And that, too, had burned away months ago.
Hitoshi bit his lip to keep from crying out as Katsuki slid one hand over the
front of his pants. His breath came in short, almost painful gasps. Katsuki
held him down with body weight and a well-placed hand, but Hitoshi squirmed
against him constantly.
“Hold still,” Katsuki grumbled, pressing the heel of his hand against Hitoshi’s
groin, his fingers curling over the waistband of Hitoshi’s pants. “What are you
trying to do?” He looked up, scowling.
“Wait,” Hitoshi panted out. Katsuki’s hand stilled and he cocked his head to
the side. “C’mere again,” Hitoshi tugged on the fistful of blond hair that he
held. Katsuki obliged, crawling back up Hitoshi’s body to be head height with
him again.
Closing the distance with another heated kiss, Hitoshi pushed against Katsuki,
urging him to roll over. When he had Katsuki on his side, Hitoshi pulled back
and whispered, “Before we go further, give me a chance to reciprocate a little
here.”
Katsuki rolled his eyes and flopped over onto his back, “Fucking fine. If you
wanted to be on top, Hitoshi, you just had to fucking say so.”
Hitoshi retorted wordlessly, slipping his thigh between Katsuki’s legs and
grinding down against him. Katsuki clenched his legs, hissing between his teeth
as he rocked his hips up against Hitoshi. With a little smirk, he continued to
press against Katsuki, returning the marks Katsuki had given him with some of
his own. Except, where Katsuki preferred to scrape his teeth over the skin, to
suck and leave bruises behind, Hitoshi bit.
He left half circle marks across Katsuki’s shoulder and then down to his chest.
While one mouth found Katsuki’s nipple and bit the skin around it, the other
left its place on his hip to tease the other nub.
Katsuki was a dozen times more vocal than Hitoshi was. It wasn’t his bedroom
that had been snuck into, after all. He had very little reason to be quiet when
Hitoshi was riddling his chest with literal lovebites. Lifting his head,
Hitoshi looked over the darkening marks he’d left all over Katsuki’s otherwise
pale skin. He traced a finger around one or two of them, trying to decide where
to put another when Katsuki suddenly grabbed him by the shoulders and rolled.
Pinned again, Hitoshi got caught up in Katsuki’s eager rush of kisses. Katsuki
kneed open his legs, spreading them with more roughness than he’d exhibited
before. Hitoshi laughed as he Katsuki manhandled them both into his ideal
position. It was breathless and weak, but still a laugh, and still got him a
pinch on the thigh from Katsuki who glared down at him with so much heat in his
eyes that Hitoshi felt like he was lying in the summer sun.
He reached up, pulling Katsuki down in for another kiss while Katsuki grabbed
him by the thighs and settled himself down between them. Grinding crotch to
crotch, Katsuki rocked down against Hitoshi, creating even more heat with the
friction of their clothing and aching cocks against each other. Rocking
together made it difficult to give any mental attention to kissing, but Hitoshi
could feel Katsuki’s lips along the side of his neck, and hear his panting near
his ear.
Hitoshi held onto Katsuki desperately, arms around his shoulders, fingers
digging into his back, legs around his hips, heels locked behind him. The
harder he dug in his fingers to Katsuki’s skin, the rougher Katsuki thrust
against him until the bed was rocking in place and Hitoshi felt like he’d been
swallowed by the sun. He squirmed against Katsuki, desperate for more, for just
a little more.
One of Katsuki’s hands let go of the bedding to grab Hitoshi by the chin. He
turned Hitoshi’s head to face him and leered, panting, eyes half open, “If you
wanted more, you just had to ask.” He pressed their mouths together, biting
Hitoshi’s lower lip and pulling on it. His grip was unyielding, and his hips
moved hard. With the third point of pressure from his biting and kissing,
Hitoshi felt himself begin to unravel in the best way- all at once and
completely.
Hitoshi gasped out Katsuki’s name as his back arched and his orgasm tore
through his body hot and hard. His nails dug in hard, scratching up Katsuki’s
back. As the swell of pleasure passed, Hitoshi could feel Katsuki shuddering in
his arms, his own climax having started after Hitoshi’s.
They lay there panting, locked in a mostly naked embrace, for a minute or two
while their hearts calmed down and their bodies cooled. Eventually, Katsuki
rolled over and grimaced. “Damnit,” he muttered, “I didn’t fucking bring any
spare pants.”
Hitoshi snorted. He sat up, wanting to get out of his own messy shorts as soon
as possible. “You can borrow some of mine if you want.”
“Good.”
Hitoshi rolled his eyes and got up on trembling legs. As he bent down to pull
off his shorts, Katsuki said suddenly, “Yes. Yes, I am.”
“Eh?” Hitoshi paused looking over his shoulder. He saw Katsuki’s gaze was on
him, but lower and on his back. Specifically, Katsuki was staring at his ass.
Hitoshi flushed and said, “You really fucking are nasty.”
Katsuki just looked smugly up at him while Hitoshi pulled off what were
probably his favorite shorts, and, consequently, the pair he tended to fuck
around the most in. The glitter lettering on the back was fading somewhat, but
it still read clearlyAre Ya Nasty? in big bold lettering. They had been a gift
from his boyfriend, his very nasty, second-floor window sneaking into, hot as a
second sun, arrogant, incredible boyfriend.
Hitoshi thought he should probably buy a second pair.
Please drop_by_the_archive_and_comment to let the author know if you enjoyed
their work!