
Posted originally on the Archive_of_Our_Own at https://archiveofourown.org/
works/13164846.
  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/Kirishima_Eijirou
  Character:
      Kirishima_Eijirou, Bakugou_Katsuki, Bakugou_Mitsuki, Bakugou_Masaru
  Additional Tags:
      babysitter_kirishima, kid_bakugou, Pedophilia, Rape/Non-con_Elements,
      Smut, Sexual_Fantasy, Hand_Jobs, Masturbation, Exhibitionism,
      Manipulation, Blow_Jobs, Rimming, Anal_Fingering, Fever
  Stats:
      Published: 2017-12-27 Words: 8166
****** Slippery Slope ******
by glazedonut
Summary
     Eijirou's a good babysitter - he's got plenty of experience dealing
     with kids and glowing praise from the parents who hire him. So when
     the Bakugou's ask him to babysit their son while they're away, he's
     up for the challenge. But as he and Katsuki start to get closer,
     Eijirou finds his eyes being drawn to him more often than not, and
     struggles with some unexpected feelings.
Notes
     WARNING: this fic contains pedophilia and noncon
“Thank you so much for doing this on such short notice, Kirishima,” Mitsuki
says. Behind her, her husband Masaru is waiting by the door, her coat and purse
already in his hands. They’re heading out on a date - dinner and dancing from
the looks of it - and Eijirou nods, smiling at her as she shrugs into it.
 
“No problem, Mr. and Mrs. Bakugou!” he chirps, and they both shoot him grateful
looks. He knows how hard it is for parents to get time for themselves from his
experience with Mrs. Midoriya, and he’s more than happy to help her friends as
well.
 
After all, more recommendations means more money in his pocket too. Everybody
wins.
 
“Now,” Mitsuki warns, “if Katsuki’s being difficult you let us know and we’ll
come running back. Don’t hesitate to call us, he can be a handful and we’re
already asking so much of you.”
 
Masaru nods along with her, face serious but gentle, and Eijirou has no doubt
that they mean every word. But he also has no doubt that they need this break,
no matter how small, and he intends to give it to them. No matter what happens.
 
So he waves them off, ushering them out of the door with a wide grin. “It’s no
problem,” he says as they step over the threshold and make their way to their
car. “Me and Katsuki will have  lots  of fun so don’t you worry about us and
just enjoy yourselves!” He means it too, the last thing he wants is to ruin
their date. If he has to deal with an irritable kid, then so be it.
 
They wave as they back out of the driveway and Eijirou waves back, watching
them until they turn around the corner and out of his line of sight. Then he
closes the door and takes a deep breath before turning around, hands on his
hips.
 
“Alright, Katsuki” he says, as bright and cheerful as he can, “what do you want
to do?”
 
Or at least, that’s what he was going to say. He immediately cuts himself off
when he sees a baleful red eye glaring at him from the gloom of the staircase.
It almost gives him a heart attack and he clutches his chest when he realizes
it’s just the kid, balled up on one of the stairs like an angry hedgehog.
 
“Oh,” he says, chuckling weakly, “you scared me.”
 
But Katsuki doesn’t laugh, doesn’t even crack a smile, just bares his teeth as
he scowls at him.
 
“I don’t need a babysitter,” he growls. Or tries to. His voice is pretty high.
“Die.”
 
Eijirou blinks. “Die?” he echoes, his eyebrows drawing together in confusion.
He’s never heard a 5 year old kid say  that  before. But Katsuki’s already
scrambling back up the stairs and Eijirou jolts, scrambling after him.
 
The kid’s crazy fast and Eijirou almost loses sight of him twice before he
manages to track him to his room just as Katsuki’s swinging the door shut. He
catches it before it can slam against the jamb, panting, and Katsuki snarls at
him from the other side.
 
“Fucking  let go ,” he yells and Eijirou winces. Kids these days have really
foul mouths. But he doesn’t comment on it, choosing instead to kneel down until
he’s level with Katsuki’s murderous glare. For a five year old it’s pretty
impressive.
 
He has experience dealing with kids though, even if none of them have been
exactly as obstinate as this one, and he knows there’s no point in forcing the
kid to hang out if he doesn’t want to. That would just be torture, for him and
for Katsuki, and if there’s anything Eijirou wants it’s for this experience to
be pleasurable for the both of them.
 
But, at the very least, he’s going to make sure Katsuki gets something in his
stomach.
 
“Alright, alright, I’ll let go,” he says, “but first you have to tell me what
you want to eat for dinner.”
 
He can tell the question throws him off guard because Katsuki doesn’t answer at
first, just squints at him, suspicious. But at least he’s not yelling or
actively hostile anymore and Eijirou takes it as a victory, content to just
wait him out. He can be patient, as patient as he needs to be. But the silence
only stretches for a few more seconds before Katsuki decides to speak up.
 
“Ramen,” he grumbles so quiet Eijirou almost doesn’t hear him. He’s pouting
into his own shirt, like he’s angry that he’s giving in already, and Eijirou
tries not to squeal at how cute he is.
 
“Okay,” he says and Katsuki’s head shoots up to look at him. Eijirou gets the
feeling Mitsuki doesn’t let him have ramen often, but he figures he can let it
slide this one time if it’ll make Katsuki quit snarling at him like a wild
animal. “What type?”
 
“Spicy!” Katsuki chirps, then immediately scowls, trying to pretend he’s not as
excited as he is. But Eijirou just smiles at him.
 
“Alright,” he says, getting to his feet, “spicy it is.” And then he walks off
down the stairs to find the kitchen, nonchalant and unassuming. But even as he
moves, he’s listening behind him, and he bites the grin off his face when he
hears a door creak open and the quiet patter of feet on the floor.
 
Fuck  this kid is too cute.
 
But he pretends not to hear anything and goes about his business, rifling
through cabinets and throwing together the best spicy ramen he knows how,
tastefully choosing not to say anything when a puff of blond hair pops up at
his elbow to watch him work. But as long as Katsuki’s here, he might as well
take the time to study him. His eyes slide to the side as he stirs the ramen,
taking in Katsuki’s pale hair, bright eyes, soft skin. Kids his age are usually
gangly and awkward, heads too big for their own bony bodies, but Katsuki’s
definitely blessed with some above average genes. Eijirou can already tell he’s
going to be a looker when he grows up.
 
But for right now he’s just adorable, watching Eijirou pour the ramen into two
bowls with open enthusiasm. He scrambles to his seat as Eijirou brings the food
to the table, eyeballing him as Eijirou moves to sit next to him.
 
“You’re gonna eat some too?” he asks, already on the verge of digging in, and
Eijirou lifts an eyebrow at him.
 
“What, you think I can’t handle the spice?” he says, like it’s a challenge. And
maybe it is because the way Katsuki grins back at him, fierce and defiant, sure
feels like an accomplishment.
 
It’s even worth the runny nose and red face he gets from racing to finish the
ramen before Katsuki, because  damn  that kid wasn’t kidding.
 
And when Katsuki is sitting on the living room couch with him afterwards, sated
and sleepy as he leans into Eijirou’s side, Eijirou can’t help the way his
heart swells. Katsuki’s different from the other kids. His affection and trust
aren’t given away freely, they have to be earned. And there’s nothing quite so
satisfying as getting someone who had once been cold to warm up to you.
 
“Wow,” Mitsuki whispers as she comes in to see Katsuki cuddled against
Eijirou’s side hours later, sound asleep, “I got a little worried when I didn’t
hear anything from you - most of our babysitters tap out in the first hour. But
I’ve never seen him take a liking to anyone so quickly.” She looks up to catch
Eijirou’s eye and smiles, slow and genuine. “We will definitely be calling you
again, Kirishima.”
 
And Eijirou’s not sure if he’s more excited for the money or for the
opportunity to see Katsuki again.
 
X
 
It’s amazing how much friendlier Katsuki is once he’s decided Eijirou isn’t a
complete waste of space.
 
Now that it’s summer and school’s out for the break, Eijirou has a ridiculous
amount of free time and he spends all of it babysitting at the Bakugou’s - bug
collecting with Katsuki, playing soccer with him, listening to him rave about
his favorite movie superhero All Might. Without his characteristic scowl,
Katsuki’s face is brighter, more energetic, more open and it makes Eijirou’s
heart pound to be able to see such a rare side to him, to be privy to something
Katsuki shows so few people.
 
He loves every second of it.
 
Katsuki’s like the little brother he never had and Eijirou smiles as he makes
his way up the Bakugou’s front steps to see the kid impatiently waving at him,
yelling at him to hurry up.
 
“Alright, alright, I’m coming,” he says as Katsuki latches onto his shorts leg
in an attempt to physically tug him along faster. At the top of the stairs,
Mitsuki is smiling at him, hands crossed over her chest and hip cocked against
the door frame.
 
“You must be getting so tired of us,” she says as he nears her. She reaches
down to ruffle Katsuki’s head when he passes and Katsuki scowls at her,
swatting her hand away.
 
Eijirou grins.
 
“Of course not!” he chirps. “Katsuki’s awesome, I don’t mind at all.” And he’s
telling the truth. It’s not a chore to spend time with the kid - it barely even
feels like a job. He just genuinely likes it. “You go on and have fun, I’ll
hold down the fort.” He bangs his fists together and grins like he’s actually
about to do battle and Mitsuki laughs at him, slapping him on the back hard
enough to make him jolt forward.
 
Beside him, Katsuki groans, long and overdramatic before shoving impatiently at
his legs, and Eijirou takes the hint.
 
“Tell Mr. Bakugou I said hi!” he calls as Katsuki propels him farther into the
house and towards the backyard.
 
He has just enough time to see Mitsuki stick her tongue out at her son, before
she waves one last time and shuts the door behind her. And then it’s just the
two of them again.
 
“Where are we going?” Eijirou asks but Katsuki just huffs at him.
 
“Start walking, you lazy ass,” he grumbles and Eijirou barks out a laugh before
stepping outside. The Bakugou’s backyard is huge, bigger than Eijirou’s, and
for the most part carefully maintained except for where the forest crowds in at
the edges. It’s deep and lush and secluded and embodies everything Eijirou
imagines when he thinks about nature in the summertime.
 
A few feet in front of him, loosely coiled in the grass, is a garden hose, a
pair of water guns propped right next to it.
 
Eijirou has a feeling he knows what Katsuki wants to do.
 
“Race you!” he calls and takes off running, laughing as he hears Katsuki’s
indignant yell behind him. It’s almost unbearably hot and he strips off his
shirt as he goes, flinging it to the side as he grabs up a water gun, already
filled and ready to go. He could say a lot of things about Katsuki but he
couldn’t say he wasn’t prepared.
 
“You cheated!” Katsuki yells as he runs up beside him, flushed and panting. His
eyebrows are turned down like when he’s angry but Eijirou knows how to read him
and he can see the smile tugging at his lips.
 
Katsuki doesn’t like to lose but he hates being coddled more, so the only way
to compete with him is to go all out  and  cheat.
 
It’s honestly pretty fun.
 
“Guess you’ll just have to teach me a lesson then,” he says, tossing him a
water gun. Katsuki catches it, giving Eijirou a long considering look before
stripping off his own shirt so they can both be bare chested.
 
“You’re on,” he says.
 
And then they’re off, bobbing and weaving through the forest, attempting to
catch each other unawares while dodging oncoming attacks themselves. Katsuki’s
ridiculously good for a kid and a couple hours later Eijirou finds himself
panting and sweaty, splayed out in the grass like a starfish with Katsuki’s
foot on his chest and a gun aimed at his face.
 
“I give, I give,” he says, breathless and laughing. He can see the cut of
Katsuki’s grin just beyond the barrel of his gun and it makes his heart
flutter.
 
Katsuki clicks his tongue at him. “I could keep going for hours,” he declares.
But he still flops down into the grass next to him, the both of them staring up
at the sky and listening to the cicadas.
 
Slowly Eijirou turns his head.
 
Katsuki’s chest is heaving, his skin flushed, his hair damp and sticking to his
forehead from sweat and water, and Eijirou lets his eyes wander a little,
drifting from his pink nipples - soft and full from the heat - down to where
the waistband of his underwear peaks above his sagging, waterlogged shorts.
 
He looks so relaxed, and Eijirou knows he shouldn’t but Katsuki’s spread out
like an invitation and all he wants to do is lick and kiss and bite. So he
rolls over to press his open mouth against his belly button, feeling the soft,
smooth skin give under his lips.
 
And immediately blows a raspberry into his stomach.
 
Katsuki squawks, scrambling out from underneath him so he can get to his feet,
and Eijirou falls back laughing.
 
“What are you doing, you idiot?!” Katsuki yells, flustered and blushing, and
Eijirou smiles up at him, blushing just as hard. “Quit being dumb and let’s go
inside already, I’m soaked.” And then he stomps off back to the house.
 
Eijirou watches him go and tries not to think about the tingling feeling
lingering on his lips.
 
X
 
It’s easy to dismiss that particular instance as an outlier - his tired,
overheated brain playing tricks on him maybe - but it keeps happening again and
again and again. Katsuki’s just so supple and smooth and Eijirou’s eyes are
drawn to him like moth to a flame, lingering just a little longer each time
before he snaps back to himself and pushes the feeling back into the recesses
of his mind.
 
He never does it around Mitsuki and Masaru,  never  - in fact, he makes a point
to maintain eye contact with them whenever they’re in the house - but as soon
as they leave, he can’t help but search Katsuki out, watching the way he splays
out on the floor, legs open and shorts riding up, to reveal the pale skin
underneath.
 
It’s fine as long as he doesn’t touch he tells himself one night, sitting on
the couch with his head back and eyes closed. Katsuki’s in the middle of taking
a bath right now and Eijirou’s mind is haunting him, fleeting images of warm,
pliant thighs and swollen pink nipples plaguing his thoughts.
 
He groans, scrubbing his face.
 
Why now? This has never happened with any of the other kids he’d babysat, not
Izuku, not Shouto, not Denki. He doesn’t understand - why Katsuki? He presses
his palms into his eyes, trying to blot out the images.
 
What’s wrong with him?
 
“What’s wrong with you?” Katsuki asks, and it’s so sudden, such a mirror to his
own thoughts, that Eijirou jumps, looking up like he was already caught in the
act. But Katsuki just scowls at him, his eyebrows curving up ever so slightly
at the ends. “You gonna throw up or something?”
 
Eijirou blinks then laughs, shaky and weak. Katsuki’s in a t-shirt so loose it
hangs from his shoulders and shorts that stop just at mid-thigh. He looks just
as warm and flushed as Eijirou had imagined. “No, I’m fine. It’s nothing.”
 
Katsuki stares at him for a moment longer, and Eijirou knows that he can see
right through his lies. But he doesn’t comment on it, instead choosing to walk
off back to his room.
 
Eijirou watches him go and then sighs. It’s probably better this way, he
doesn’t need anymore temptation tonight. Sitting on this couch alone, with
Katsuki asleep and the quiet of the house settling around him, he should be
able to clear his head in no time.
 
Which is why he’s so surprised when Katsuki marches back into the living room,
a book under his arm.
 
“I thought you went to bed,” Eijirou starts to say. And then he swallows his
own tongue when Katsuki plops down on the couch. Right in between his spread
legs, ass inches away from Eijirou’s dick.
 
“Sick people need stories,” Katsuki declares, like it’s obvious. And Eijirou
wonders if Katsuki sits in his mom’s lap like this or if it’s just him. If he’s
special.
 
“Okay,” he breathes. The outside of Katsuki’s thighs are pressed against the
inside of his own, and he’s always heard that kids run hot but Katsuki’s like a
furnace . He can feel the heat radiating off of him, soaking into Eijirou’s
clothes, and he wants to pull the kid back until he’s slotted against his hips,
all that warm weight resting on his dick.
 
But if he does that then he’ll want more. He’ll want to wrap an arm around
Katsuki to pull him back closer, want to suck hickeys up his neck until he’s
panting in his ear, want to snake a hand down his stomach to grip him right
where thigh meets hip and hold him still while he grinds his cock into
Katsuki’s tight little ass.
 
It’s dangerous, so dangerous, how slippery this slope is and Eijirou clenches
his fists, pressing them into his own thighs to keep them still. “What are we
reading?” he asks and his voice comes out raspy and deep. He clears his throat.
 
“ I’m  reading All Might,” Katsuki says, proudly holding up a comic, and
Eijirou gives a strained smile, nodding at him to go ahead.
 
But when Katsuki turns back to start reading, the smile immediately drops. He
smells so good, fresh and clean like soap, and he only growls a little when
Eijirou leans forward to press his nose into his damp hair, inhaling the scent
of shampoo. He’s so  small  - 50 pounds max - and Eijirou could lift him
easily, sit him right on his dick and feel him squirm around until he’s nice
and comfortable.
 
His cock twinges at the idea and Eijirou bites his lip. He’s so hard he can
feel himself leaking in his shorts, throbbing every time Katsuki so much as
shifts against him. He wants so badly to touch himself, slip his hand down his
own pants and just jerk off hard and fast until he comes all over the boy’s
back. His hand uncurls from his thigh, sliding back to thumb at his own zipper.
 
Katsuki’s so focused on the words, sounding them out with careful precision
like he doesn’t want to mess anything up in front of him - he won’t notice if
Eijirou just takes the pressure off a little bit.
 
He’s quiet, so quiet, as he works his shorts open, sliding his hand into his
boxers to wrap around his fat cock. Just the touch is electric after so much
holding back and he holds his breath even as his mouth falls open against the
back of Katsuki’s head. It feels so  good  rolling his balls in his hand,
running his fingers up the underside to catch his slick, palming the head in
slow, steady circles so he won’t jostle Katsuki. His thighs are tensing over
and over again with each stroke and he wants to roll his hips up, bend Katsuki
over and hold his legs together so he can slip his dick in between and fuck
them.
 
He tries to swallow down his moan at that but a little noise still manages to
escape and Katsuki stops reading to give him a questioning grunt, his unique
method of asking him if he’s okay. Eijirou freezes, something twisting deep
inside his groin.
 
It’s too late to stop now.
 
“Sorry, my stomach just hurts a little,” he says quietly, sliding down until
his forehead is resting against Katsuki’s shoulder so that he won’t turn back
to look at him. “Keep going, I’m starting to feel better.”
 
And he’s terrified it won’t work, terrified that Katsuki’s going to squirm away
from him and turn to see his hand inside his underwear still wrapped around his
dick. That he’ll scream, yell, call him disgusting, run away.
 
But Katsuki just grunts.
 
“You better not puke on me,” he grumbles, shifting his shoulders to bear
Eijirou’s weight more comfortably. And then he keeps reading.
 
Eijirou just barely keeps himself from slumping, all of the tension breaking
off of him like cut strings. His heart is still pounding away in his chest but
now the adrenaline is mixing with such a deep, all consuming relief that it
feels like euphoria - and he didn’t think he had an exhibitionist streak before
but that sensation of almost getting caught, of seeing it coming and somehow
escaping it anyway, is enough to almost make him nut right then and there.
 
Almost.
 
So he strokes himself again, gripping himself tighter because he can’t go
faster, imaging that it’s Katsuki’s too tight ass splitting open for him
instead of his own hand. Eijirou’s on the bigger side of average and with the
way they’re sitting he can almost measure the length of his dick against
Katsuki’s back, almost imagine how deep he could get with Katsuki sheathed all
the way down his length. It would take so much prep to get him ready to take
Eijirou’s dick, lovingly stretching him out with his tongue and then his
fingers, and Katsuki’s so  flexible , he could bend him in half while he fucks
him, slip his hands under the back of his knees and hold him spread out and
open while Eijirou grinds into him sweet and slow.  
 
And Eijirou would be so gentle with him, so so gentle, licking away any tears,
swallowing down his cries with a kiss. He wants this to be pleasurable for both
of them, wants to feel Katsuki spasming hard around him as he creams himself
for the first time ever on Eijirou’s dick.
 
Eijirou strokes himself hard, listening to the sound of Katsuki’s voice and the
quiet squelching his dick makes as he beats himself off inches from Katsuki’s
ass. He wants him, wants him so badly, wants so badly to make him feel good.
 
He thumbs his head, rolling the pad around it before dipping into the slit. He
wants to come inside Katsuki. And he wants to watch it leak out of his gaping
asshole when he’s done. And suddenly he’s coming harder than he’s ever come
before, splattering the inside of his boxers, so much that it’s soaking through
the fabric. Eijirou tenses all over, biting his lip until it bleeds as pleasure
tugs at his balls and rolls up his spine.
 
He floats down from his high slowly, like a man coming back to Earth, panting
against Katsuki’s back but trying hard to keep it quiet, under control.
 
He’s almost back to his normal self by the time Katsuki stumbles in his
reading, the first mistake he’d made since they’d started.
 
“Pun- punis-” he says, stuttering over the word and Eijirou lifts his head to
glance over his shoulder.
 
“Punishment,” he says.
 
X
 
After the first time, it’s hard not to do it again. Katsuki doesn’t know it but
he’s a walking ball of temptation - the way his mouth wraps around popsicles,
red and cherry flavored; the way he always wants to wrestle Eijirou and
straddles his stomach when he wins - which is always because Eijirou really
likes the feel of those legs around his middle.
 
Every little thing he does makes Eijirou hard enough to cut diamonds, and at
this point it just makes more sense to jack off to it rather than walk around
the house with a constant raging boner like a perv.
 
But he does have one rule: Katsuki can never find out.
 
He can jack it to the thought of those thighs, that ass, those lips, that tiny,
prepubescent dick, but Eijirou  refuses  to let Katsuki see or hear him, always
sneaking off to a secluded part of the house before shoving a hand down his
pants to fuck his own fist. This whole situation is a slippery slope - he knows
it, he knows it better than anyone - but this is the ledge that he’s
constructed for himself to keep from slipping any lower and he is planting
himself on it for good. The high of his almost discovery was amazing, but he
can’t let it happen again.
 
So when Eijirou feels his dick twitch in the middle of their movie night, he
knows it’s time to go. Katsuki had jumped to take advantage of his parents’
absence and somehow convinced him that he was old enough to watch a horror
movie - well, not somehow. Eijirou knows exactly how. The idea of Katsuki
clinging to him, shivering, pretending like he wasn’t scared when he so
obviously was, practically made the decision for him.
 
But he’s made this rule and he’s sticking to it. So he angles his hips away so
Katsuki won’t see the tent in his pants, and begins detangling his arms from
Katsuki’s claw like grip.
 
Or tries to. Katsuki immediately grips him harder at the first sense of
movement, head whipping around to glare at him. His lip is trembling the
slightest bit, chin scrunched up, and Eijirou wants to shoot the part of
himself that wants to lean in and lick it.
 
“Where are you going?” Katsuki demands. Even his voice is wavering.
 
Eijirou smiles at him.
 
“Don’t worry, I won’t be gone long,” he says instead of answering. It’s the
perfect thing to say because Katsuki immediately scowls at him, letting him go
like he’s been burned.
 
“I’m not worried, I don’t care,” he says, crossing his hands over his chest
like he’s challenging Eijirou to say differently.
 
But that’s exactly the reaction he wanted and Eijirou nods before getting to
his feet. “Good, good. Keep on watching, I’ll be back.” And then he walks off
to slip into the master bedroom.
 
There’s lotion on Mitsuki’s nightstand, the silky kind, and Eijirou makes a
beeline for it, one hand already tugging his shorts and underwear down over his
ass. This is the good stuff and even though he knows he doesn’t have much time,
he still wants to savor it. So he takes a second to just spread it all along
his dick and down around the sensitive skin of his balls, rolling them in his
palm, before sliding back up to cup the head. It’s slow and languid, going
nowhere fast, and Eijirou leans back onto his free hand and closes his eyes,
imagining Katsuki on the bed with him.
 
He’d be spread out, close to the edge of the bed and holding his own legs up
and open this time so that Eijirou would be free to use his hands. And he’d be
so red and embarrassed but also excited, his little dick barely big enough to
pull back the foreskin and his hole winking around nothing. Kids that age are
so smooth, completely hairless, just a hint of a darker flush marring the skin
to show how hot he’s getting from Eijirou’s tongue on him, licking up his balls
to his cock before trailing back down to bury deep into that delicious hole.
And he’d be able to feel the tremors running through Katsuki’s thighs as he
moaned, Eijirou on his knees and eating him out nice and sloppy while under the
bed he worked his own dick until he exploded.
 
It’s a beautiful image, one of his favorites, and it has Eijirou salivating as
he works his cock faster and faster, mimicking the him in his fantasy. He would
treat Katsuki so good, so right, have him screaming and crying and begging for
more until his cock jerked and Eijirou swallowed him down, Katsuki’s little
thighs squeezing around his head as he caught all of it on his tongue.
 
A bit of drool escapes his mouth and Eijirou blinks, absentmindedly reaching up
to wipe his mouth. He’s so close, so close, so close.
 
And then he looks up and sees Katsuki though the crack in the doorway, staring
at him.
 
He tenses.
 
And then his orgasm rips through him like a live thing, cum spurting out of his
dick so hard that it catches him on the chin and drips down to his chest. It’s
a full body orgasm and the muscles of his stomach roll and flex as he milks it
for all he’s worth, stripping his dick hard and fast until cum dribbles down
his hand and he finally, blessedly, stops.
 
For a moment, the only sound in the room is Eijirou’s panting.
 
Katsuki’s still staring at him, wide eyed, lips parted, and panic is quickly
replacing the last vestiges of pleasure, clawing up his throat and choking him.
This is the end. He’d had  one  rule and he’d broken it and now Katsuki’s going
to think he’s disgusting and tell his parents and Eijirou’s going to get
arrested and go to jail-
 
“What are you doing?” Katsuki asks.
 
His brows are furrowed when he walks farther into the room and Eijirou blinks
because this is  not  what he was expecting. But Katsuki isn’t screaming or
running away in terror so he latches onto it like the lifeline it is.
 
“I’m playing,” he says and his voice comes out shaky and rough. “But you
weren’t supposed to see me playing so I can’t come back here again.”
 
Katsuki blinks at him, brows furrowing even more, and Eijirou stares back at
him, heart in his throat. He’s too panicked to tell if it’s working or not and
the suspense is making him jittery but he waits until Katsuki speaks again.
 
“You’re not coming back?” Katsuki says, somewhere between a question and a
statement. The words falls from his lips like a dead thing, flat and dull.
 
Eijirou shakes his head.
 
“Why not?” Katsuki asks.
 
“Because you’ll tell your parents.”
 
“I won’t!” Katsuki says immediately, so quick and forceful that it makes his
voice crack. And for what it’s worth, Eijirou really thinks he wouldn’t.
Katsuki’s pretty smart for his age, and fiercely loyal to boot. He would trust
him with a secret.
 
But he needs to make sure this is engraved in his mind.
 
“You won’t?” he says, with just enough uncertainty to sound like he’s thinking
it over.
 
Katsuki shakes his head so violently Eijirou’s afraid he’ll give himself
whiplash. “I won’t!” he yells. “I said I won’t. I won’t.”
 
He stares Eijirou down, daring him to say differently, and Eijirou pretends to
mull it over, drawing it out until Katsuki starts to look anxious again.
 
And then he nods.
 
“Okay,” he says finally. “I’ll stay.”
 
And the smile that breaks across Katsuki’s face at that only makes him feel
that much guiltier.
 
X
 
It’s a tense couple of days after that. Eijirou feels like he’s on the edge of
a precipice, waiting to hear the news that will push him over to his death, but
it never comes. Mitsuki and Masaru don’t drive up to his house to kill him, or
call the police to track him down in an elaborate witch hunt, or do any of the
many other divine retributions he had been imagining in his mind.
 
They ask him to babysit like normal and even Katsuki treats him just like
always: snarking at him, playing with him, not keeping his distance or shooting
him wary looks at all.
 
Eventually Eijirou stops waiting for the other shoe to drop, slowly lets his
shoulders fall from where they’d been hiked up to his ears with paranoia. His
life isn’t over, it’s all behind him, they’re back to the status quo.
 
The only thing that changes is: now when Eijirou gets up for some me time,
Katsuki follows him.
 
“Where are you going?” Kastuki asks.
 
They’re out in the backyard again, watermelon rinds littering the grass, and
Katsuki’s face is sticky and sweet with juice and just asking to be licked. But
at his question Eijirou pauses on his way to the forest, glancing over his
shoulder.
 
“Don’t worry, I’ll be back,” he says - like he always says, status quo, status
quo.
 
But this time Katsuki hops to his feet.
 
“I’m coming too,” he declares. And Eijirou blinks at him because mayday,
mayday, this is  not  status quo.
 
“It’s fine, you can stay here,” he finally manages, taking a few hesitant steps
away. But for every step he takes, Katsuki takes one too, and finally he stops
because clearly that isn’t working.
 
He doesn’t know if Katsuki just doesn’t want to let him out of his sight after
their last conversation or what, but his dick is hard and pulsing and he needs
relief  now . “I, uh, I have to pee,” he tries instead but Katsuki just raises
an eyebrow at him.
 
“I have to pee too,” he says, crossing his arms over his chest.
 
This is getting them nowhere.
 
“I have to play,” he finally admits, under his breath. He’s blushing a little
now that Katsuki’s forced him to say it out loud, but the kid doesn’t even bat
an eye.
 
“Play here,” he says.
 
And if Eijirou thought he was hard before, that was childsplay to how hard he
is now.
 
“You won’t tell?” he asks.
 
“I won’t tell,” Katsuki answers.
 
And it almost sounds like a pact between them, tying them together. Eijirou
can’t get his shorts unbuttoned fast enough.
 
He sits cross legged in the grass and less than a foot away Katsuki mirrors
him, openly staring as Eijirou pulls his dick out and gives it a cursory
stroke. It feels kind of weird to have an audience, especially when his
audience is the kid he’s been fatasizing about ramming for  weeks , but it also
feels kind of good, Katsuki’s gaze cutting right through him and coiling deep
in his gut.
 
He starts stroking in earnest now, chasing that feeling, and he starts off
watching the head disappear into his fist over and over again but it’s hotter
to watch Katsuki’s face, the way his eyes roam down from Eijirou’s lower abs
and then drop lower to follow the movement of his hand.
 
“Yours is different from mine,” Katsuki suddenly says, and Eijirou stutters in
his rhythm.
 
Katsuki’s eyebrows furrow, gaze flicking up to meet Eijirou’s like he thinks
he’s done something wrong, but Eijirou just licks his lips. He shouldn’t. He
really, really,  really  shouldn’t.
 
“Do you want a closer look?” he asks.
 
The question blurts out of his mouth before he can muster the willpower to stop
it and he instantly regrets letting it escape.
 
The next few seconds are the longest of his life.
 
Katsuki doesn’t say yes. But he doesn’t say no either. And when Eijirou shifts,
stretching his legs out a little wider and opening his arms, Katsuki gets up to
come closer. He stops for a second when his shins brush Eijirou’s and Eijirou
has to crane his neck back to look up to see his face, see the way his eyebrows
scrunch together a little bit.
 
But, even though his dick is screaming for Katsuki to come closer, Eijirou just
smiles at him, nice and warm and unassuming. He doesn’t want to scare the kid
off. If Katsuki’s not feeling it then Eijirou can go back to what he’s always
done and that’ll be that. No harm done.
 
But Katsuki does slide into his lap, slinging his legs over Eijirou’s thighs,
and he doesn’t move, not even when Eijirou wraps a hand around to cradle his
ass.
 
“You okay?” Eijirou breathes, and he doesn’t mean to sound so obviously eager
for it, but his dick is arching towards Katsuki, reaching up past where his
belly button would be, and he  wants .
 
Katsuki nods, his brow smoothing out, and Eijirou starts moving again, slowly
at first and then gaining a little more speed the longer Katsuki stares. It’s
unbelievably sexy having Katsuki’s weight on him while he does this, so much
different than all the other times he’s gotten himself off, and he never wants
this to end.
 
He wants to put on a show for him, lure him in, keep him still and curled up in
his lap forever. So he twists his hand on the way up, palms his balls, swipes
his thumb over his head, anything he can think of to keep Katsuki’s interest.
And the whole time he’s leaning in ever so slightly, getting closer and closer
until he can nuzzle his face in Katsuki’s neck and breathe him in, one hand
rubbing up and down his back over and over again while the other furiously
jacks himself off.
 
And he knows he shouldn’t be asking for anymore when he never even expected to
get this far. But he’s so horny he can barely see straight, let alone hold
himself back.
 
“You can touch it, you know,” he whispers against Katsuki’s skin, panting as
pleasure flares in his gut and courses up his spine. “Don’t be scared.”
 
Katsuki’s response is sharp and immediate and predictable. “I’m not,” he says.
 
And Eijirou almost feels bad for manipulating the kid like this if not for the
way his dick jumps when he feels a tentative touch against him, fingertips
brushing against his head and dragging through his slick.
 
He sucks in a breath of air, just barely stopping himself from biting down on
Katsuki’s neck.
 
“It’s all wet,” Katsuki murmurs, and Eijirou can’t see his face but he can tell
by the tone of his voice that it’s scrunched up. He smiles against Katsuki’s
neck, nuzzling deeper and smelling his scent.
 
“That means I’m almost done playing,” he says, breath stuttering on a moan. And
only a few strokes after that he’s coming, so long and hard that he almost
blacks out.
 
Katsuki jumps in his arms a little and Eijirou curls over him, keeping him
close and panting into his neck as he rides out the waves of his orgasm. But
finally his hand slows then stops, and he pulls back.
 
And immediately freezes.
 
There’s cum streaking all up the front of Katsuki’s shirt, so high up that
there’s even some on his cheek.
 
Eijirou shudders.
 
Katsuki’s blinking at him, wide eyed and off guard, and Eijirou wants so badly
to lick the cum off his face. But he also knows that’s not what Katsuki needs
right now.
 
So he smiles, big and wide, and wipes the cum off Katsuki’s cheek with his
thumb. “Sorry, sorry, didn’t mean to get it on you,” he says. And it’s just
like his normal tone, the same one he would use if he had spilled food in the
kitchen or accidentally tripped Katsuki with his foot, projecting as much
normal  as possible. And finally Katsuki’s expression relaxes back into his
usual scowl.
 
“It stinks,” he says, pouting down at his shirt. The cum is slowly soaking
through and he wrinkles his nose.
 
“I know right?” Eijirou says, laughing, and Katsuki looks up at him, the
slightest grin tugging at his lips. Right as rain. “Thanks for playing with me,
Katsuki. Now let’s get us cleaned up.”
 
X
 
Katsuki doesn’t always want to do it. He’s a kid - a volatile kid at that - and
he has times when he’s more standoffish than others. But Eijirou doesn’t mind.
As far as he’s concerned, the status quo is still jacking off by himself and
moments like that, where he’s holding Katsuki close and nutting all over his
skin, are just icing on the metaphorical cake. He still craves more, of course.
He doesn’t think he’ll be truly satisfied until he’s inside Bakugou, feeling
his pulse every time the stretched red skin of his asshole clamps down around
his dick.
 
But that’s neither here nor there.
 
Eijirou holds himself back because that’s the right thing to do, and he would
never force Katsuki. He may have broken his first rule but that wasn’t really
his fault and he’s not planning on breaking this one.
 
Even if he does get a little frustrated at times.
 
“He’s got a little bit of a fever today,” Mitsuki tells him. She’s sitting on
the edge of Katsuki’s bed, combing her fingers through his hair. It’s the only
part of him that’s visible underneath the blankets and Eijirou wonders what he
looks like under there, if his skin is flushed and sweaty, eyes glazed over.
He’s always more relaxed and pliant when he’s sick and Eijirou can’t wait to
get his hands on him.
 
Mitsuki looks up from Katsuki’s head to where Eijirou’s standing in the
doorway, and he flicks his eyes away from the lump under the covers to meet her
gaze.
 
“Let me know if he gets any worse and I’ll come running back,” she says.
 
And Eijirou nods, even as he knows he won’t pick up that phone and shorten his
time with Katsuki for anything.
 
When she finally leaves, Eijirou immediately takes her spot on the bed, gently
tugging on the covers. “Hey, Katsuki?” he calls and he hears a muffled grunt.
“I want to see your face.” There’s no response for a moment and Eijirou tugs a
little harder, pulling the covers down until one red eye weakly glares out at
him. The little bit of skin Eijirou can see is just as flushed as he’d
imagined, bits of Katsuki’s hair damp and sticking to his forehead.
 
He growls and Eijirou smiles at him.
 
“Wow, you’re sweating so much! I’ll wipe some of that off for you,” he chirps.
Katsuki still glares at him, but he tacks on a “It’ll make you feel better, I
promise,” and that’s enough to lure the boy out, lowering his blankets and
sitting up.
 
“I’m cold,” he says, voice raspy and petulant, and Eijirou can see he’s
shivering.
 
“I know but I’ll keep you warm,” he says. He doesn’t have a rag or anything but
he really wants to get his hands on Katsuki’s body, so he grabs the corner of
one of the blankets and waits for Katsuki to take off his pajamas.
 
They’re All Might themed. So cute.
 
“Ah, ah, ah,” he tuts when Katsuki stops after squirming out of his pajama
pants, “underwear too. We have to get all the sweat.”
 
So Katsuki pulls those off too, sluggish with fever. But Eijirou doesn’t mind.
It almost feels like a strip tease, watching that fabric slide so slowly over
Katsuki’s slim thighs and he’s loving every second of it.
 
He pats his lap when Katsuki’s done, sighing as his tiny ass settles against
the tent in his pants. This is the first time he’s gotten Katsuki completely
naked - he feels so good against him and Eijirou’s so excited already he can’t
help but grind against him. But Katsuki’s head lolls back against his chest to
glare up at him.
 
“Stop it,” he says, “I don’t feel good.” But it doesn’t have any of the bite of
Katsuki’s usual snark, too breathy and tired, and Eijirou smiles at him.
 
“Sorry, sorry,” he says, working his hips one last time before stopping. He
doesn’t mind, he has other plans anyway.
 
Katsuki yelps at the first touch of Eijirou’s hands on his skin and his fingers
must be cold because Katsuki’s  burning . But he doesn’t even have time to pull
back or apologize before Katsuki’s mindlessly pressing into it, seeking
something cool to balance the heat radiating off his body.
 
It’s kind of hot and Eijirou can’t stop himself from reaching up to tweak one
of his plump pink nipples. “Does that feel good?” he whispers, letting his
mouth brush against Katsuki’s ear while the kid squirms and Katsuki nods.
“Good, good, I want you to feel better.”
 
He keeps one hand splayed on Katsuki’s skin, roaming up and down, helping him
cool off and reveling at how soft and small he is. Eijirou’s body practically
dwarfs him, Katsuki’s pale limbs almost swallowed up in his own. He loves it,
loves the way he can curl around him, loves the way he can spread his hand out
and cover his entire chest while the other dabs off his sweat with the blanket.
 
But he wants more, and when his free hand begins to warm up he lets it slip
lower, cradling Katsuki’s cock and balls in his palm. Katsuki shivers and
whines and Eijirou has to bite his lip to keep from doing the same. He’s
already hard from the way he’d been touching him earlier, but even hard his
dick is smaller than one of Eijirou’s fingers.
 
His entire groin could fit in Eijirou’s hand.
 
“Hot,” Katsuki groans, squirming weakly as Eijirou starts stroking him,
fondling his tiny balls. Katsuki’s dick is so pretty and Eijirou presses his
open mouth to his temple.
 
“Didn’t I tell you I’d keep you warm?” he pants. His dick is straining so hard
for Katsuki’s ass that it’s threatening to rip his shorts. He tosses the
blanket aside and brings that hand to his mouth, sucking on his index finger
until it’s slick with spit. “I always want you to feel good.”
 
And then he takes that finger and circles Katsuki’s asshole with it.
 
“That’s- you can’t!” Katsuki says, the first bit of energy peaking through the
fever as he panics.
 
But Eijirou shushes him, cuddling him closer.
 
“It’s okay, it’s okay,” he says, planting comically big kisses on Katsuki’s
cheek until he relaxes, a mixture of a laugh and a growl coming from his throat
as he squirms away. He blows a raspberry on his cheek just to hear him squawk
and then pulls back to look at him. “Do you trust me?” he asks and Katsuki
blinks at him. “You know I would never hurt you right?”
 
“...right,” Katsuki says, quiet. Eijirou kisses his temple, gentle and sweet
this time.
 
“Okay?” he asks. Katsuki doesn’t say anything, but he does nod so Eijirou
smiles, nuzzling into his hair.
 
God this kid is too cute.
 
Katsuki stiffens a little as his finger goes back to playing with his rim again
but he quickly relaxes as Eijirou fondles his dick, more focused on rutting
into his hand than what’s going on with his ass. And he’s so loose from the
heat that it’s not that hard to work in a finger, thrusting deeper and deeper
with every roll of Katsuki’s hips.
 
“How does it feel?” he murmurs once he’s in to the second knuckle. He’s so hot
and tight on the inside and Eijirou  wants .
 
“It feels gross,” Katsuki grunts. But he’s still thrusting against Eijirou’s
palm, now wet with his precum, and when Eijirou curls his finger to rub at the
slick insides of his body, Katsuki keens.
 
“Good?” he breathes, and Katsuki’s head lolls, his hand scrabbling for
something to grab before latching onto his shirt.
 
“I don’t know,” he whines, and Eijirou leans over to lick the tears gathering
at the corner of his eyes, all the while massaging inside Katsuki harder and
harder. Katsuki’s legs splay open wider, thighs trembling, and his asshole
keeps fluttering and Eijirou wishes more than anything that he could feel that
against his dick.
 
Then suddenly Katsuki is pushing at him.
 
“Stop, stop!” he says, trapped between Eijirou’s hand and finger and too weak
to escape but squirming anyway. “I have to pee!”
 
But Eijirou can’t stop now and Katsuki tenses, cock jerking as little spurts of
come shoot out all over his stomach and Eijirou’s hand. Katsuki moans, ass
clamping down hard enough to cut off his circulation and Eijirou can’t get his
hand down his own pants fast enough, stripping his own cock hard and fast until
he comes to the feeling of Katsuki’s asshole clenching over and over on his
finger, milking it.
 
“Feel better?” Eijirou says, panting as he comes down from his high. He doesn’t
want to work his finger out, would much rather leave it inside him forever. But
it will start feeling uncomfortable for Katsuki soon so he pulls it out anyway,
slowly and gently, until it pulls out with a squelch. “Katsuki?”
 
There’s no response and Eijirou looks down to see Katsuki naked and pink,
passed out in his lap and covered in cum.
 
It’s an image he wants to burn into his retinas.
 
“Don’t worry,” he murmurs. “I’ll get you cleaned up.”
 
And then he bends down to lick up all the cum, savoring the taste of Katsuki on
his tongue and pulling back to admire his work when he’s finished.
 
He still looks delicious, ass pink and swollen and begging for his cock, and
Eijirou feels his dick hardening again.
 
He’s got at least a couple more hours before Mitsuki gets back and he smiles.
 
Fuck rules.
 
 
 
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