Posted originally on the Archive_of_Our_Own at https://archiveofourown.org/
works/13742787.
  Rating:
      Explicit
  Archive Warning:
      Rape/Non-Con, 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/Midoriya_Izuku
  Character:
      Bakugou_Katsuki, Midoriya_Izuku
  Additional Tags:
      Somnophilia, (that's_the_reason_for_the_rape_tag), Incest, shota!Deku,
      (you_can_think_of_him_as_whatever_age_lets_you_sleep_at_night), Humor,
      Extremely_snarky_narration, Because_Katsuki_is_so_awful_here_that_even_I
      can't_take_it_seriously, Dirty_Talk, Non-Consensual_Somnophilia
  Stats:
      Published: 2018-03-01 Words: 6226
****** Bakugou Katsuki Is Garbage and Here's Why ******
by DrProblematic
Summary
     The thing about Katsuki was that he, like anyone, had morals. It’s
     just that his were in mint condition. They were untouched. Katsuki
     had never taken them out of their original packaging, and he had no
     plans to do so anytime soon.
Notes
     READ THE TAGS.
     A lot of you commenting on "Soft" requested that I post my more...
     problematic fics, and well. Here you go. 6k words of incest shota
     somnophilia smut featuring Katsuki getting fucking dragged by the
     narrative, because he deserves it lol.
     To be clear, I don't condone any of this in real life, though that
     should be obvious.
     And you can call me problematic for writing this, but chances are
     I'll just delete it, not because it's wrong (that's another debate
     entirely), but because it's redundant.
     ENJOY
See the end of the work for more notes
The initial discovery hit Katsuki over the head immediately after he hit Izuku
over his. 
It would've been a morning like any other, if not for the fact that Izuku was
not yet awake. On most mornings, the boy would be up before anyone else,
bouncing off the walls and shaking the very foundation of the building until
Katsuki finally dragged himself out of bed just to get him to chill the fuck
out. Which was why it was so shocking for Katsuki when he found himself rising
naturally at around half-past eight, with little to no commotion to be heard in
other areas of the house.
So there he was, standing beside his little brother’s All Might themed bed, his
voice rapidly growing in volume as he tried to wake the sleeping boy. Somewhere
along the way, he’d taken to shaking the boy by his shoulders. When that didn’t
work, he began slapping him across the face, and hitting him over his head. It
was around that point that Katsuki began to worry that Izuku might’ve
legitimately gone into a coma, and in a split-second, impulsive decision, he
ripped the covers off his body and sent him toppling off the side of the bed.
He hit the floor with a dull thunk, and the groan that accompanied it was
relief for Katsuki.
“Fucking christ, kid. You could sleep through your own murder.” 
Izuku was sitting up then, hands clutching his blanket to his chest as he
blinked up in innocent confusion at his older brother. “Katsu-nii?” He said,
blushing adorably. 
“Katsu-nii,” Katsuki mimicked in a high-pitched voice, rolling his eyes just
before yanking the boy up by his sleep shirt. “C’mon, you’re late for school.”
“Wh-what?!” The boy went stiff, dropping the blankets and proceeding to
frantically run around his room, shedding clothes at the speed of light.
Katsuki took that as his cue to leave.
 
===============================================================================
 
Katsuki didn’t think much of the incident for the majority of the day. It was
at some point during the class’ reading of Plato’s Symposium that his thoughts
began to drift, gravitating toward visions of Izuku’s soft, sleeping face,
accompanied by the sound of Katsuki’s palm hitting his skin. It was all
downhill from there, really. It’d taken being literally thrown onto a hardwood
floor to wake the boy up, and Katsuki couldn’t help but wonder just how much he
could’ve gotten away with. 
Bet I could’ve jerked him off and he still wouldn’t have woken up. I could cum
all over him, and he wouldn’t even stir. Probably wouldn’t even gag if I fucked
his face. Hell, I could fuck his tight ass all night, and in the morning he’d
probably just wonder why he feels all sore and wet down there.
Katsuki’s dick twitched in his pants, and it was as good as decided. He never
was all that great at impulse control.
 
===============================================================================
 
At around two in the morning that night, Katsuki opened Izuku’s bedroom door
and shut it behind him with a soft click before approaching his bedside. He was
shaking with excitement and nervousness alike, already partially hard in his
low-hanging sweatpants. Izuku was breathing slowly, obviously in a deep sleep
and Katsuki almost wanted to laugh because it was so fuckingperfect. 
Remaining cautious, he slowly eased himself onto the mattress, just below
Izuku’s pillow, and started peeling the covers off of him. As expected, the boy
didn’t stir. He didn’t stir when Katsuki removed the blankets, or when he moved
on to his clothes, or even when he started smoothing his fingers over the soft
skin of his abdomen. Katsuki moved to straddle the boy, his knees on either
side of his hips, biting his lip as his breathing became heavy. He’d wanted
this for so fucking long.
Izuku was stripped down to his briefs, his soft, full lips slightly parted as
he breathed deeply in his sleep. Slowly, Katsuki trailed his fingers down to
the boy’s waistband, beginning to rub the subtle bulge there teasingly. As
Izuku’s small cock began to harden, he wondered if the boy had ever touched
himself before, and began to rub more insistently as the image solidified in
his mind. The idea of his baby brother stroking himself, or maybe humping the
bed sheets, whimpering pathetically, Katsu-nii, Katsu-nii.
A soft noise passed through Izuku’s lips that made Katsuki freeze momentarily.
It was subtle, an almost imperceptible whine, but upon examining his face,
Katsuki saw no other signs of waking. Didn’t Deku talk in his sleep when he was
younger?Katsuki recalled, and the thought of the boy moaning even as he
slumbered over the pleasure his big brother gave him spurred him back into
action.
To the shock of absolutely no one, it didn’t take very long before Izuku was
coming. His little thighs quivered and his hips bucked almost imperceptibly as
he spilled into his white briefs. By the time he was finished, Katsuki had damn
near finished in his pants, as well, feeling sweat dampening his forehead as he
stared down at the boy’s soaked underwear, pupils blown wide. Without another
thought, he promptly pulled his cock out of his sweatpants, jerking himself
fast and hard, with only Izuku’s cum as lubricant. Feeling possessed, Katsuki
proceeded to spread the boy’s legs wide open, situating himself between them.
“Nngh, fuck, Deku—” He groaned aloud, unable to stop himself as he gazed down
at the boy and reminded himself that he did this. He made Deku like this. With
one last grunt, he came hard, aiming his tip down at the boy’s briefs as
strings of cum coated his inner thighs and further drenched his underwear. The
wet fabric clung to the curve of Izuku’s ass as Katsuki’s cum soaked through.
With a couple of stuttering breaths, Katsuki sat back on his haunches, admiring
his handiwork before meticulously redressing Izuku. He then left the boy’s
bedroom, already knowing he’d be back.
 
===============================================================================
 
 
Katsuki knew that the havoc he wreaked on his brother was bound to elicit some
kind of reaction. He could picture it in his mind: Izuku waking up, feeling the
wetness in his pants, and assuming he’d just had a normal wet dream. When
Katsuki visualized his shocked expression as he pulled down his pants and
discovered a frankly ridiculous amount of cum, he felt nothing short of
complete amusement, and decided it was something he’d have to see for himself.
With that in mind, Katsuki set an alarm that night that would ensure he would
wake up before Izuku. 
In the morning, Katsuki loitered casually against his bedroom door at the end
of the hall, arms crossed over his bare chest as he awaited the inevitable.
When he heard the sound of blankets softly shifting, his expression morphed
into a salacious grin as he approached the door, placing his ear against the
wood. The noises he heard were muffled, and the words were unintelligible, but
hearing the obvious gasp followed by high pitched muttering made the whole
thing worth it. He slapped his palm against his mouth, having to physically
stop himself from laughing.
After a few minutes of shuffling, he heard the footsteps getting louder, and
immediately reverted back to his original casual loitering position. He stared
intently at the door knob as it turned, and when Izuku emerged, he was carrying
an armful of sheets as well as his pajamas from the night before. They were
stacked so high in his arms that it actually obstructed his vision, and he
didn’t see Katsuki until he began turning in the direction he intended to walk.
“Kacchan!” He blanched, jumping in shock and dropping his soiled laundry in the
process.
“Morning, Deku.” He said, in an uncharacteristically cheerful voice. “Need some
help?” Katsuki was approaching him before Izuku even had a chance to process
the question.
“N-no, that’s—” But it was too late, Katsuki was already gathering soiled
clothing in his hands, going out of his way to grab ahold of Izuku’s soiled
briefs, still damp from the previous night’s antics. He visibly felt the damp
fabric in his hands as he handed them back to his brother.
“Don’t worry, I won’t tell the ‘rents that you still wet the bed,” he smirked.
Izuku’s face flushed bright red. “That’s not what—” He started to say, before
he seemed to think better of it. Izuku’s mouth clamped shut. Between pissing
the bed and having a wet dream, Katsuki figured the former was probably a
marginally less humiliating thing to disclose to one’s older brother.
Katsuki snorted, ruffling Izuku’s hair before heading back to his bedroom.
That was so fucking worth waking up early.
 
===============================================================================
 
The following night found Katsuki languidly stroking his cock over Izuku’s
peacefully slumbering face. Soft grunts filled the room, punctuating the words
that tumbled from Katsuki’s lips unintentionally as he became mesmerized by the
sight of his dick so close to his little brother’s face. 
“Mmph, fuck yeah…” he groaned under his breath, head lolling between his
shoulders. As Katsuki began fucking into his fist, the movements shook the
entire bed, making Izuku’s head jolt with each thrust. “Gonna cum all over your
face, Deku… Gonna fuckin’ ruin you…” He leaned down slightly, rubbing his wet
cockhead over the boy’s lips, admiring the way it left them glistening with
precum, the way they parted ever so slightly, as if to invite him in.
“Fuck—” Katsuki grunted, his eyes shutting briefly before snapping back open,
watching intently as his first shot of cum landed on Izuku’s cheek. On
instinct, the boy’s head began to turn away. I think the fuck not, Katsuki’s
fingers went to grip his chin, holding him in place, and at that, the boy let
loose a soft whine. Katsuki took the opportunity that was his open mouth to
shove the head of his cock between those plush lips, stroking fervently as he
came directly into the boy’s mouth.
Izuku could wake up now. He could wake up right that second and call their mom,
call the cops — Katsuki really didn’t give a fuck. It didn’t matter. All that
mattered to him in that moment was how fucking goodit felt to cum into his
little brother’s mouth, how satisfying it was to watch it spill from the
corners of his lips and dribble down his chin.
Katsuki let the last few drops fall on the boy’s tongue before withdrawing his
dick. The sight of his adorable little brother’s mouth full of his cum was
almost enough to get him going again, but he held back, tucking his dick back
into his sweatpants. Izuku’s mouth had fallen shut naturally, though it
occurred to Katsuki that if he were to wake up in his current state, the cum in
his mouth would be difficult to explain. He couldn’t exactly rationalize the
notion of Izuku accidentally coming into his own mouth, and so, with that in
mind, he sealed one hand over the boy’s lips as the other came down to stroke
his throat, coaxing him to swallow.
The taste would still be there in the morning, but the absence of the actual
fluid made making the connection unlikely and, more importantly, impossible to
prove.
 
===============================================================================
 
The next morning Katsuki walked past the open bathroom door and caught a
glimpse of Izuku brushing his teeth with unusual vigor. He smirked devilishly,
though the boy didn’t see him. 
As soon as Katsuki got the chance, he set the early morning alarm on his phone
to go off every day. Izuku’s morning routine was simply too amusing to miss out
on.
 
===============================================================================
 
Katsuki knew he was entering dangerous territory. 
For the past week, he’d been getting himself off over Izuku’s body, the keyword
being over as opposed to with. He knew that the boy wouldn’t wake up, but the
thought of having Izuku’s body take a more active role in his nightly sessions
still sent his heartbeat racing in ways both good and bad.
He did what he figured would be the reasonable thing, if such a thing even
existed in that situation, and started off slow. Katsuki wrapped his fingers
around Izuku’s smaller hand, encompassing it completely as he manually wrapped
it around his cock. Once he’d secured the hold, he began making languid
thrusts, groaning loudly at the sensation of his soft, uncalloused fingers
smoothing along his shaft.
He was lying on his back while Katsuki kneeled beside him, the mattress dipping
under his knees and pulling Izuku down with him slightly. The boy’s breathing
was soft and even, his mouth slightly agape, and it occurred to Katsuki that
this was what he loved most. No matter how many times he used him like this,
his little brother always looked so completely innocent, because he was. Izuku
slept soundly, blissfully ignorant of the hungry gaze his own brother had
locked on him.
He came on the boy’s fingers, moaning into the dark room, “Fuck, fuck, Deku… ”
He didn’t even hesitate before immediately shoving each finger into Izuku’s
mouth, observing the way he sloppily sucked up all his cum just before it slid
down his throat and feeling satisfied.
 
===============================================================================
 
Every morning Izuku brushed his teeth like he was trying to forcibly erode the
enamel, and every morning Katsuki ate breakfast as though nothing was amiss. 
He thought, for about five seconds one day, that perhaps he should stop this.
Perhaps he should just, y’know, not use his baby brother’s unconscious body as
though it were a very high-tech sex toy, and just go back to jerking off like a
normal person. He thought that, maybe, if he helped Izuku with his homework
enough, he could make up for all the shit he did to him when the sun was down.

Then Katsuki recalled the feeling of utter euphoria he got every time he made
the boy swallow his cum, and the ghost of that feeling sent a chill down his
spine and a rush of heat to his dick. Just like that, his five seconds of doubt
were over, and Katsuki made peace with the fact that his actions were
completely irredeemable.
He sipped his coffee nonchalantly and decided that burning in Hell for all of
eternity wouldn’t be so bad. He was Katsuki Bakugou, after all. Satan would
never truly understand hotness until he showed up on his doorstep.
 
===============================================================================
 
There was one night in which he entered Izuku’s room feeling particularly
wired. It’d been a long day, and Katsuki couldn’t be bothered to be cautious.
He knew it wasn’t necessary, anyway. He simply strode over to his bed, shoving
his sweats down along the way, and immediately straddled his face. 
Katsuki noted the way his mouth was slightly open, perfect, as he stroked
himself to full hardness. Then, with one hand holding his mouth open, he slowly
guided his cock into Izuku’s mouth, groaning at the sensation of the head
sliding past his lips. “Ah, fuck yeah…”
Even in his current state, Katsuki had the good sense to ease into it. After
all, there was a very real chance of Izuku waking up in this situation. He made
shallow thrusts, burying his fingers in Izuku’s messy bed hair and sighing as
tension melted off his shoulders. But he couldn’t resist the wet heat of his
little brother’s mouth for long.
He began moving faster, thrusting into Izuku’s mouth as a new kind of tension
began to build up. Izuku slept soundly, even as Katsuki’s cock was repeatedly
shoved into his mouth. It was, frankly, unbelievable.
“Y’sure you’re not awake, fucking Deku?” He asked, gripping the boy’s hair a
little tighter, thrusting his cock a little deeper. “I bet you are. Bet you’re
fucking awake. Bet you fucking love this.”
Drool began to dribble from the corners of Izuku’s mouth. He showed no signs of
stirring. The sight of his cock disappearing into his little brother’s mouth
had Katsuki growling, snapping his hips forward as he gave in entirely,
relishing the sensation of being buried so deep in that heat. Even as the
euphoria overtook his senses, he couldn’t help but see humor in the absurdity
of it all.
“Goddamn, Deku. I bet you’ve been awake from the beginning. What d’you do when
I leave, huh? You fuckin’ fist your little cock and get off thinkin’ about me?
D’you fantasize about your big brother fucking you?” The bed shook with the
force of Katsuki’s thrusts. “Mm, yeah, take it…”
Deku’s spit had rolled down his neck, soaking the front of the sleep shirt
Katsuki couldn’t be bothered to remove. He watched the way his eyelids moved
slightly as his eyes darted around rapidly beneath them, and wondered what he
was dreaming about. It didn’t take long to figure it out once he felt Izuku
moaning around his cock, shooting delicious vibrations up his spine. At first,
Katsuki was worried he’d woken up, and began to retreat, pulling out of his
mouth and backing away on the mattress. That was when he noticed the bulge in
Izuku’s pajama pants.
“Holy fuck, Deku,” he said, palming the boy’s erection through the pants with
one hand, while the other was instinctively drawn back to his own shaft, slick
with Izuku’s saliva. “Are you seriously having a fuckin’ wet dream? Shit,” He
moaned, tugging the boy’s waistband down and freeing his cock, watching the way
it jerked and twitched in his sleep. The sight gave Katsuki an idea.
Leaning down, he pressed his lips to Izuku’s ear and let loose a stream of
consciousness string of filth.
“Yeah, you like that, Deku? You like the way your brother fucks your tight ass?
What d’you think mom would say if she knew what you and Kacchan have been up
to, hmm?” He whispered, lips brushing the shell of his ear with each word.
Izuku whimpered softly, little noises of pleasure from deep in his throat. “Mm,
yeah, look at you, fuckin’ slut. You take it so good, Deku takes Katsu-nii’s
cock so good…”
Katsuki slid his hands up Izuku’s shirt, tweaking his nipples roughly and
marvelling at the way Deku’s cock twitched untouched. “You gonna come for me?
You gonna come for your brother, Deku?”
Izuku released a soft, choked sob as his dick spasmed, streaks of cum coating
his stomach. Katsuki reached down and stroked him through his orgasm, feeling
dangerously on edge himself. “Fuck.”
He shuffled back toward Izuku’s head, ready to finish what he started. Without
any more delay, he shoved his cock down Izuku’s throat, delighting in the way
the residual noises from his throat vibrated around him before setting a brutal
pace, fucking into that wet heat with no regard for anything else. He was so
pent up, he couldn’t help it. Both his hands buried themselves in Izuku’s hair,
and with one last hard thrust, he was gone, coming down his little brother’s
throat and pulling at the roots of his hair, grinding his hips into the boy’s
face as he moaned into the quiet room, “Nngh, Deku…”
He breathed heavily in the aftermath, still holding Izuku’s head in place.
Slowly, he withdrew, watching as a string of spit on the boy’s lips connected
them even after he’d pulled out. As an afterthought, he slapped the boy’s full
cheeks with his still-hard cock and smirked as copious amounts of saliva
transferred onto his face. Abruptly, he dropped Izuku’s head back to the
pillow. There was no point in being gentle.
If that didn’t wake him up, fuckingnothingwill.
 
===============================================================================
 
The next morning, Katsuki heard a pathetic moaning noise from inside Izuku’s
room and his mind dived head-first into the gutter. It took a moment, but he
managed to collect his thoughts and realize that it was definitely not the kind
of moan he was thinking of. He knocked on the door. 
“Deku? You alright in there?” He called out, and that was all the warning he
gave before he barged in.
Izuku was in his bed, still wrapped in blankets, with a definitively pouty look
on his face. When Katsuki entered, he averted his eyes and yelped, his voice
cracking in the process.
“What, you fuckin’ sick or something?” Katsuki asked, noting the intense blush
on the boy’s face.
Izuku was quiet for a moment, before replying in a hoarse voice, “My throat
hurts…”
Well of fucking course it does. I did fuck it like the world was ending last
night, Katsuki thought and decidedly did not say.
“Does it hurt to swallow?” Heh. Swallow.
Izuku nodded, still looking away from him. It was clear that he was avoiding
speaking because it was painful. Katsuki felt bad for like, 0.03 seconds. Then
he felt kind of proud, because he was garbage like that.
“Sounds like strep. I’ll get you some stuff to numb it,” He put his hands in
his pockets and strolled back toward the door. “You just rest, alright? No
school for you. I’ll explain everything to mom,” Katsuki called back as he shut
the door behind him.
Well, not everything.
 
===============================================================================
 
Katsuki was ready. He knew the odds and he knew the risks, and he was ready to
ascend to higher-order levels of garbageness. 
The situation was this: Izuku was sick. Not just sore from getting his throat
roughly fucked by his older brother, but actually, legitimately sick. He had a
pretty high fever and was loopy off the medication prescribed for him.
Katsuki was a good brother, so of course the first thing he thought to do in
these circumstances was stick around and take care of him, making sure he
recovered fully. 
Katsuki was a good brother, so of course the second thing he thought to do in
these circumstances was take advantage of the situation and use it as an
opportunity to finally fuck his little brother. 
The thing about Katsuki was that he, like anyone, had morals. It’s just that
his were in mint condition. They were untouched. Katsuki had never taken them
out of their original packaging, and he had no plans to do so anytime soon. 
As it was, any time Izuku wasn’t sleeping, he was really only partially
cognizant. The fever had seeped into his brain and made him delusional, and it
was only exacerbated by the medicine. Evidently, it was the perfect time for
Katsuki to make his move. Even if Izuku did wake up during the encounter, he
still wouldn’t be able to fully comprehend what was going on, which gave
Katsuki the perfect window to make his escape. And if Izuku said anything about
it the next day, he’d chalk it up to a fever dream. 
He entered the boy’s room late that night armed with a bottle of lube. The
humidifier softly whirred in the background as he approached Izuku’s beside,
and the cold compress on his forehead had long since warmed up. Katsuki was
particularly gentle in how he removed the blankets and his brother’s clothes. 
He was sick, after all. 
Once Izuku was stripped bare, Katsuki spread his legs open and situated himself
between them. The boy was dead to the world, breathing noisily in his sleep on
account of his nose being stopped up. Squirting some lube into his palm,
Katsuki began playing with the boy’s cock, teasing him to full arousal as he
stroked his inner thigh lovingly. He held the bottle high above the boy’s hips,
watching as lube dripped and splattered in the general vicinity of his groin,
sliding past his balls and toward his hole. Gathering some of it onto his
fingers, he started teasing Izuku’s rim, circling around the entrance as his
coaxed his body to relax for him. 
When Katsuki slipped his forefinger inside, he damn near came in his pants at
the mere thought of thrusting his cock into that tight heat. He tried to remain
patient, reminding himself that it wouldn’t be good if Izuku woke up with a
sore ass in the morning, and slowly began to move his finger, stroking the
boy’s inner walls. 
After a while, Katsuki began to tease a second finger around his rim, feeling
the boy’s muscles loosening up for him as he gradually eased it inside. Lewd
squelching noises filled the room, and Katsuki’s breaths came quick and
shallow. 
“Fuck, Deku…” He whispered, thrusting faster as the temptation became too
intense to resist. When he pressed the third finger into him, he caught sight
of how Izuku’s hips seemed to twitch whenever he rubbed at a certain spot
inside of him. He aimed at that spot, and his throat went dry at the image of
Izuku subtly fucking himself on his fingers, as though even in his sleep, he
could still feel the pleasure of being stretched open for him. 
Katsuki restrained himself. He counted to one hundred as slowly as he could
manage, because really, he genuinely did not wish to hurt Izuku. If Katsuki had
his way, the boy would be under him, fully cognizant and screaming in ecstasy
every single night, but that was not the case. So he held back as long as he
could possibly manage, and the second he reached one-hundred, he immediately
removed his fingers. He poured more lube into his palm and stroked his cock,
groaning softly at the way it throbbed in his hand. 
Katsuki took a deep breath and grabbed ahold of Izuku’s knees, pushing his
thighs up toward his chest as he positioned the head of his cock at his
entrance. This was it. Everything he’d been fantasizing about for years was
finally going to be realized.
As he pressed inside of him, the heat of the boy’s body sucked him in further.
Katsuki eased himself in slowly, eyes darting between where they were connected
and the boy’s face. Although the image of his cock disappearing inside his baby
brother’s body was intoxicating, he still had enough sanity to check for signs
of waking. 
When the boy didn’t stir, Katsuki breathed a sigh of relief and basked in the
feeling of Izuku’s tight ass wrapping around his dick. His hips ground into
Izuku’s as he bottomed out, and he began counting down from one hundred again.
He managed to get to, like, seventy-three or something before his fragile self-
control snapped, pulling out halfway before thrusting back inside. His fingers
dug into Izuku’s thighs as the sound of his cock moving inside the boy occupied
his mind. 
The pace Katsuki set was languid at first; a slow, sensual drag against Izuku’s
inner walls which was satisfying for six entire seconds. Incidentally, it
stopped being satisfying at the exact same moment that Katsuki decided he no
longer gave a fuck about Izuku waking up. With one hard snap of his hips, he
set a fast, merciless pace that filled his ears with the sound of skin slapping
against skin. Call the police, I don’t give a fuck. 
“Fuck, Deku, you’re so fucking tight…” He groaned loudly, one of his hands
snaking up the boy’s torso to toy with his nipples. Katsuki smirked at the way
Izuku’s hips twitched, as though, even in his sleep, he was trying to fuck
himself on his big brother’s cock. “Shit— ” Katsuki shoved Izuku’s legs further
up, effectively folding the boy in half as his lower back was lifted off the
bed entirely. Fuck the consequences fuck the consequences fuck the
consequencesfucktheconseque– 
“Yeah, fucking take it, Deku,” he moaned mindlessly, eyes squeezing shut as he
lost himself in pure sensation. “Take my cock. So fucking good for me, so
fucking perfect. Fuck. Fuck, Izuku— ”
“Katsu…nii…?” The sound of Izuku’s voice penetrated the fog in his mind. It was
enough to make him open his eyes, but not enough to make him stop. He stared
down at his brother as his brother stared up at him, eyes glassy and dazed.
Katsuki chose not to say anything, because honestly, there was nothing he could
say that would make the situation innocuous, and he didn’t care to try. His
dick was up his little brother’s ass and that was all that fucking mattered to
him.
“...is this a dream…?” Izuku slurred, sweet and innocent, as though Katsuki
wasn’t fucking him as he spoke.
“...I dunno, why?” He asked in a monotone voice.
“Mm, called me Izuku… Kacchan only calls me Izuku when I’m dreaming…”
It occurred to Katsuki that what Izuku just said was probably kind of sad, or
something, but he didn’t dwell on it for very long. He couldn’t afford to, not
when he was having to simultaneously balance fucking his brother with managing
damage control for fucking his brother.
“He only does–Ah–this when I’m dreaming, too…”
Well, that’s—Wait, what?
“You dream about me a lot, Deku?” He asked, smirking as he moved his hips at a
slow, teasing pace. 
“Mm, yeah—aahhh,”Izuku moaned, looking up at Katsuki was glazed eyes that
revealed the extent of his arousal as well as his fevered, delusional state.
“Yeah?” He raked his fingernails harshly down the boy’s chest, making him cry
out. Leaning in to speak directly in his ear, Katsuki asked, “Since when?”
“Mmph, what do you mean?” Izuku whimpered pathetically, before going on to say
something that awakened something feral in Katsuki’s mind. "I never dream about
anybody else.” 
It wasn’t what Katsuki was expecting. He expected Izuku to say‘since last
week’, or something else that was basically synonymous with ‘since you
whispered all that filthy shit in my ear and forcibly inserted yourself into my
initially normal wet dream.’ 
But this. 
“Fuck—” Katsuki slammed his hips into Izuku, the sound of his skin slapping
against skin ringing throughout the room as he pounded his little brother’s
ass. He leaned down, shoving his legs even further up, and rested his forehead
against Izuku’s. He couldn’t escape Katsuki’s gaze if he wanted to. “You wanted
me that bad, huh? Your own fucking brother?” 
Izuku’s mouth opened in a silent scream as he shut his eyes, the feeling of
Katsuki’s cock fucking into him eclipsing everything else. 
“Fucking look at me.” Katsuki growled. 
Izuku’s eyes opened slowly. His tongue lolled out of his mouth, “P-plea…
Katsu–Ka...!” He sobbed. He was either begging him to stop or begging him to
keep going. As always, Katsuki chose to believe what was most convenient for
him and fucked his brother harder. 
“Shit–Goddamn, Deku, you fucking whore… could’ve just asked,” he breathed into
Izuku’s mouth, staring down the big, green, deceptively innocent eyes of his
little brother. He adjusted the angle his hips until he felt his cock brushing
against something that made Izuku scream. He released a huff of a laugh. “God,
you’re so fucked up, Deku. Wanting your big brother’s cock like this — it’s
fucking gross.” 
Katsuki had no room to talk, but that had never stopped him before.
“You’re just a fucking slut, aren’t you? C’mon, say it.”
“I’m, I—” Katsuki watched the way the saliva accumulating in his mouth began to
spill from the sides. 
“Say you’re my slut, Deku.” 
“N-no, I… I c-can’t––” 
A sudden flash of adrenaline hit Katsuki’s veins, and before he knew it, he’d
flipped their positions, forcing Izuku onto his stomach and he maneuvered his
legs so he was propped up on his knees. As he shoved his little brother’s face
down into the mattress, there was a distant part of him that thought that, hey,
maybe he should like, not be so rough with Izuku when he was sick. But then, he
really shouldn’t be fucking his brother while he was sick, either. But then, he
really shouldn’t be fucking his brother at all.
Basically, at this point, the principal mentality of all of Katsuki’s actions
was go big or go home.
With one hand pressing Izuku’s cheek into the mattress, Katsuki used the other
to grab ahold of his brothers left elbow, tugging him back as he reentered the
boy from behind.
“Fucking say it, I-zu-ku…” That seemed to do the trick, if the boy’s soft
muttering was any indicator. 
“I-I’m… your…”
“Hah?” He leaned forward, looking down on Izuku. “Speak up or I’ll stop fucking
you.”
“I-I’m your slut, Katsu-nii!” He called out desperately. The humiliation of it
seemed to catch up with him immediately after, as Izuku turned his face into
the mattress, as though he could hide.
“Hmm, is that so?” Katsuki scoffed, taking his hand off of the boy’s face in
favor of grabbing onto his other arm. Izuku whimpered when his palms were
placed on both his ass cheeks. “Better start acting like it, then,” he said
darkly, prompting a look of confusion from over the boy’s shoulder. “I’ve been
doing all the work, y’know. The least you can do is hold your ass open for me.”
Seeming to understand, Izuku dug his fingers into his own asscheeks, the tips
of his fingers turning white with the force of doing as he was told. He
subsequently dropped his head back to the bed.
Izuku’s face was red and he felt hot all over, and had everything but the
illness to blame.
Katsuki hummed in delight. With his hands unoccupied, he was free to do as he
pleased, leaning down over his little brother’s back as he continuously fucked
into him. He shoved the fingers of one hand into the boy’s mouth while the
other reached beneath him to find his dick, jerking him off in time with his
thrusts.
He stroked Izuku’s tongue and fucked his mouth with his fingers, and once they
seemed sufficiently coated, Katsuki straightened up again. With his left hand
still rubbing the boy’s length, he circled his wet fingers around Izuku’s hole.
Slowly, he eased his forefinger in alongside his cock.
“ Ka- Kacchan!” He yelped, before quickly devolving back into moans of ecstasy.
“Ahhh… that’s–that—”
Katsuki inserted a second finger.
He knew he was pushing it, but the sight of Izuku’s hole stretching around
everything he gave it, practically sucking him in, seemed to usurp his
willpower. That seemed to happen a lot, these days.
As Katsuki was fucking him, he noticed the boy’s noise level rapidly
increasing.
“Ahh, ka—ahh—Katsu-nii!” He sobbed, rocking his hips back and forth
desperately. Lacking any sort of consistency in doing so, as though he couldn’t
quite choose between the urge to thrust into Katsuki’s hand and the urge to
fuck himself back onto his cock. His teeth dug into the sheets, muffling a
scream as he came all over Katsuki’s hand, his cum dripping messily onto the
bed beneath him. He clenched around his brother’s dick, and Katsuki knew it
wouldn’t be long for him then.
He thrust into Izuku one, two, three more times, hard enough to bruise, and
that was it. Katsuki came hard inside his little brother with a regard for the
consequences that could be aptly described as negative.
“Fuck —shit, Deku. Fuck, nngh, Izuku.” He continued pumping into the boy
through each shot of thick cum, scissoring the fingers alongside his cock and
stretching Izuku’s hole wider simply because he could. Through the aftershocks,
he ground his hips into his brother’s ass and noted that Izuku’s arms were now
slack at his sides.
As Katsuki pulled out, the sight of his cum dripping slowly from his little
brother’s entrance was almost enough to get him going again.
It was only then that Katsuki realized Izuku had fallen back asleep, and
honestly, he couldn’t help but laugh at how very appropriate it was. The
encounter ended just as it began. There was a sort of symmetry to it that
would’ve been poetic, had it not existed within the context of Katsuki fucking
his very underage little brother in the ass.
With a film of satisfaction over his vision, he redressed Izuku, tucking him
snugly beneath his covers in the most comfortable position he could think of
which also prevented his cum from leaking out. Things were looking up for him. 
 
===============================================================================
 
The next morning Katsuki woke up drenched in his own sweat with a temperature
just shy of frying his brain. Izuku seemed to be well, from what he’d seen. His
temperature was down. Evidently, Katsuki fucked the fever right out of him. 
Katsuki stayed in bed with a cold compress on his forehead, drinking down cold
water and painkillers and eating chicken noodle soup like a fucking loser.
Izuku came in every now and then to replace his washcloth with a new cold one,
and every time he did, Katsuki made it a point to stare directly into his eyes
with a smirk and a salacious glint that superheated his red irises. Each time,
Izuku would flush bright red and look away, in a manner that Katsuki was
relieved to find reflected more of a sort of inherent embarrassment than actual
regret.
When he stared into empty space, the air around him wavered with his body heat,
and he felt nothing short of completely disgusting, physically speaking.
Despite this, he didn’t regret anything. Whenever Izuku turned to leave his
bedroom, he hobbled over to the door with a limp that was a lot more obvious
than the boy seemed to realize. It was things like that which reminded Katsuki
why he was sick, yet every time he saw it, he couldn’t help but think,
reverently, even through the haze of his fever:
Fucking worth it.
 
End Notes
     Hope you enjoyed this fucking disaster.
     There is a certain point on the spectrum of moral abhorrence at which
     the terribleness of a character just crosses over into the realm of
     absurdity, and the only way for me, as a writer, to deal with it is
     apparently to inadvertently start throwing shade at that character
     within the narrative itself. So yeah, I hope none of you took this
     super seriously, because I sure as fuck didn't when I was writing it
     lol.
     I actually have one other Shota!Deku fic (which is over 11k words I
     want to fucking die) that's narrated in the same way but like...
     worse. Look, call it OOC, but I just... really like writing Katsuki
     as a self-aware awful person. Dragging him is just really fucking
     fun.
     Other than that, I have a couple of fics in which Katsuki just....
     straight up rapes Deku... All are around 6k words, because I am a
     well-adjusted individual.
     Anyway, to all the people who read and commented on "Soft"... 1.
     Thank you, and 2. I hope you knew what you were asking for.
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