Posted originally on the Archive_of_Our_Own at https://archiveofourown.org/
works/3384317.
  Rating:
      Explicit
  Archive Warning:
      Underage
  Category:
      M/M
  Fandom:
      弱虫ペダル_|_Yowamushi_Pedal
  Relationship:
      Shinkai_Hayato/Shinkai_Yuuto
  Character:
      Shinkai_Hayato, Shinkai_Yuuto
  Additional Tags:
      Incest, Sex_Toys, Anal_Fingering, Anal_Play, Dirty_Talk, Panties, Coming
      In_Pants
  Stats:
      Published: 2015-02-18 Words: 3612
****** Innocence is an Act ******
by bunnaby
Summary
     "Haya-nii," his voice is soft, quiet, an act meant to draw Hayato
     into a false belief that his younger brother is nothing but an
     innocent saint, "Whatcha doin'?"
     or
     Yuuto finds Hayato's vibrator.
Notes
     shincest is my guilty pleasure, but can you blame me???
     unbeta'd for now but i really wanted to post this so enjoy
See the end of the work for more notes
When their parents aren't home, Yuuto walks around the house in his underwear:
his pink and white striped, lace around the edges, just a little too tight,
underwear.
Hayato and Yuuto generally keep to themselves, the house quiet save for the
dull lull from Hayato’s television, and his own pop music that fills his room
while he undresses and lounges around, Cosmopolitan raised above his head, back
against the plush of his comforter. Yuuto, soon enough, is bored by the cliche
advice and useless sex tips he reads.
Without fail, the younger brother always ends up in his older brother's bedroom
mid-afternoon when he knows he still has several hours before his parents
return. Like clockwork, Hayato starts expecting the company, but he still
clearly remembers the first time Yuuto used pink panties and his lip street t-
shirt, comically (and cutely) oversized on his brother, against him. The first
time, it was a surprise to him that Yuuto even considered participating in what
previously felt so wrong, but half a year of messing around later, it seems
normal. They never question the change in their relationship, and Hayato
figures they won't until it becomes a necessity.
"Haya-nii," his voice is soft, quiet, an act meant to draw Hayato into a false
belief that his younger brother is nothing but an innocent saint, "Whatcha
doin'?"
"Homework," he replies, not pushing away from his desk or putting down the pen
in his hand. He actually has plans to study until late night ended and early
morning began, but without glancing over his shoulder, Hayato can tell that his
response doesn't stop Yuuto from advancing.
"Haya-nii," he whines this time, voice much more impatient and like the younger
brother Hayato knows. This makes the older smile at his notebook and sit up,
glancing behind him at the intruding voice. That is his first mistake, looking.
Hayato isn't going to be able to study, as made obvious by the way Yuuto’s hips
sway as he walks in, hands shyly linked behind his back. Hayato tries to ignore
it, perhaps for the sake of riling up his younger brother, but when Yuuto
climbs into his lap and drapes slender arms around his neck, it becomes
difficult to refuse him.
Now Yuuto is pouting as he stares down at his brother's face. He doesn't
usually blush or bite his lips, so Hayato thinks that's something the other
does special for him. The sight makes him weak and willing to succumb to
anything. "You come home for one weekend and stay cooped up in here the entire
time," he starts to complain, hunching over until their foreheads touch. Yuuto
brushes their nose together, whining from his throat as he gives Hayato his
classic, well-practiced (and so fake) puppy dog stare. "You never spend time
with me."
"Exams are coming up," he answers, his excuse valid, but he knows he's let this
go too far for Yuuto to care. "Don't you want your older brother to go to
college?"
"No," Yuuto says almost instantly, brows knit together, "Stay here with me."
"You want to go to Hakone Academy next year, don't you?" Hayato retorts, "You
won't be here anyway."
"No," the smaller says again, shuffling in his brothers lap and getting comfy,
holding him tighter and slumping against him, "Not if Haya-nii stays here with
me."
"Well, I'm not."
"Are too."
"Sorry, Yuuto."
"Mean."
Hayato smiles at this again and can't help but think about how cute Yuuto is.
The pout on his full lips is distracting, so Hayato kisses them apologetically.
Yuuto whines again, but doesn't reject the kiss since that's what he came in
here for anyway and he tires easily of pretending to be mad. They kiss with no
real vigor behind it yet, lips lazily moving together. This is Yuuto's favorite
part so when his arms tighten around Hayato's neck and his lips part on their
own and willingly, Hayato's tongue slips past and tastes the sugar on his
brother's teeth. His hands search the expanse of bare back, and only then does
it register how naked Yuuto is, and how short of a time it would take, at this
rate, to rile him up.
Hayato is the one to break the kiss, eliciting a whine from the other. "Let me
finish the problem I'm on," he assures as he gently nudges at the hips in his
lap, asking them off. "I'll forget how to do it if I wait. It's hard."
Yuuto whines again, and as impatient as he is, he understands and steals a
parting kiss from his brother before sliding out of his lap and flopping onto
the bed. He takes his precious time rolling around in the sheets and mess of
unmade blankets and soaks up the smell left behind. "Wash your sheets more
often. They're gross," he mumbles, head landing on one of the pillows, the only
one that is properly in place, so the one Hayato sleeps with.
"My sheets are fine," Hayato laughs, scooting his chair in to get closer to his
work. He barely picks up his pen and continues the problem before Yuuto speaks
up again.
"Pillow's lumpy too," he continues to complain although he isn't hesitating to
wrap himself up in all of it. Hayato visibly stiffens and forgets all the math
he's ever learned.
Yuuto can't get over how uncomfortable the pillow is, so midst some more
complaining, he rolls onto his stomach and lifts the pillow to fluff it.
"Yuuto, wait," he hears, but he ignores it for staring at the suspiciously
phallic piece he finds underneath. It’s obviously a dildo; Yuuto isn't dumb.
However, Hayato doesn't necessarily know that, so he picks it up and lays on
his back again, holding it above his head and looking at it from every angle.
The toy is a fiery red, much like his brother’s hair, with (after a couple test
squeezes) a firm base yet much softer shaft. It’s sleek and beautiful, not
realistic at all to what either of them are endowed with, and he can’t stop
staring. Hayato, who was too late anyway, is now beet red and sitting on the
edge of the bed, cursing himself for not putting the toy away sooner. "That's,
uh," he starts, trying to make a swipe for it, but Yuuto holds it close to him,
"That's a massager. You know, for my legs after races." He is desperate to take
the toy away from his brother, but the other finds the little switch on the
bottom and yelps as it starts to vibrate in his hands when flicked. It’s too
late, the older brother moans in embarrassment, he knows he’s been found out.
“A massager?” Yuuto repeats, trying to contain a smirk while maintaining his
feigned innocence, “Oooh, sounds nice! Give me a massage, Haya-nii,show me how
it works!”
Is it worth playing along? Hayato ponders as he watches the other jiggle the
silicone around in his hands and laugh about it and Hayato has nearly lost his
entire body’s supply of blood to the color in his cheeks, and wow, has his
little brother always been so cute?
Yes, yes he has.
Before he knows it, the toy is being pushed into his hands by an overly eager
Yuuto who is continuing to chant, “Come on, do it! Show me, show me!” Hayato
takes it reluctantly, his gaze alternating between the toy and his brother. He
sighs, crawling higher up on the bed, between Yuuto’s knees after pushing them
apart. For a minute, he had forgotten that the teen was in nothing but his
panties, but from where Hayato is now kneeling, he is reminded of the pink lace
that hardly covers anything. His gaze runs down evenly tanned skin (Yuuto made
a point to avoid unsightly tan lines), noting all the areas that are pinker
than others. His free hand follows his eyes, tracing the tips of his three
longest fingers over his chest, abdomen, and hips before laying his palm flat
on the top of Yuuto’s thigh.
“We’ll start here,” Hayato murmurs, entranced now, and Yuuto nods in
understanding as his older brother guides his knee until it’s bent. He does the
same with the other leg before pressing the silicone against the underside of
his thigh and turns on the vibrations. Yuuto squeaks once, but then bites his
lip and tries not to laugh when the vibrations tickle behind his knee. Hayato
gets the hint with a tiny smile and moves it inwards, pressing the head of the
toy into his muscle and circling it slowly.
He feels like he should ask the younger how it feels, but something about that
seems too lewd, even though he knows he’s supposed to be pretending that this
is a innocent massager meant for strained muscles and nothing more. Midst his
thoughts, he doesn’t get the chance to ask, because Yuuto is already sighing in
the way that explains exactly how he’s feeling along with moaning a quiet,
“Feels good, Haya-nii...”
Hayato isn’t sure anymore if he is still giving his brother a massage or if it
has evolved into weird foreplay of some kind, but he doesn’t have time to
ponder it between exploring the different spots of Yuuto’s thighs and the
sounds coming out of his mouth. Yuuto isn’t trying to hide his enjoyment
whatsoever. He knows he doesn’t have to. Hayato is weak and will give his kid
brother whatever he wants and their parents won’t be home for at least a couple
more hours.
Hayato is lucky enough to be fully clothed, which means he has much more to
cover his growing arousal fighting against the material of his sweats, but
Yuuto is a different story. Without much covering him anyway, it’s obvious
where the vibrations are really affecting him. His entire body-- particularly
his legs-- is covered in goosebumps; his nipples are nearly the same,
unattended and hard; and Yuuto’s panties are struggling to contain his swelling
member. Hayato drags the toy inwards to the edge of his panties, and that’s
when Yuuto starts squirming and whimpering and wraps his arms around the
other’s neck.
“Enough playing around,” Yuuto nearly whines, pulling his brother closer to
direct his voice into his ear, “I know what it’s really for.” While Hayato
isn’t surprised, the blood still boils up to his ears and has him lightheaded
and prepped for making bad decisions. He feels teeth scrape against his ear and
his dick twitch, and he knows he’s so, so fucked.
“You’re too young,” Hayato tries to argue, but Yuuto isn’t having it. He
presses his hips into Hayato as much as possible and nibbles the lobe of his
ear. “I’m fourteen,” he retorts, not sure that’s enough, so with as much
remaining innocence as he can muster now, he adds, breathy, “and I know Haya-
nii will take care of me.”
“Yuuto, please,” he tries once more.
“Hayato,” Yuuto doesn’t even give him the chance to say anything else because
he’s using the voice he uses to scold Omukichi when he nibbles through his
clothes, “Come on.”
That’s all he needs to switch the toy off and let it drop onto the sheets as he
stands up and walks to his dresser. There, he rummages through the top drawer
until he finds a neglected bottle of lube he left before moving into the dorms.
Yuuto, who knows he’s won, shimmies out of his panties before Hayato can return
to the bed, but when he does, he seems visibly disappointed that he didn’t get
to do that himself. Yuuto smiles smugly about it as he wiggles his hips
invitingly.
“I’ll do it for you, but you have to be patient,” he says firmly as he pops
open the bottle top and pours the slick onto his fingers. “This happens on my
pace.” Yuuto nods enthusiastically and spreads his legs wider than before. He’s
dreamt about this happening before, and he always tries to get his fingers in
himself when he jerks off at night, but lotion is too gunky and gross to use on
his ass, he thinks. Lost in thought, he’s caught off guard when cold fingers
touch the bottom of his asscheek and slide towards his asshole, the pad of his
brother’s middle finger rubbing over the opening. It takes no longer than three
seconds for Yuuto to shake in anticipation, clawing his fingernails into his
own knees to keep them from closing around his brother’s shoulders, and himself
sane.
Hayato warns him before he pushes in the first finger, but it’s not necessary
save for how cold it feels until his body temperature warms the digit up
naturally. He can usually slip a finger inside via his own come or even dry, so
the weird feeling of having something going in a channel meant for out isn’t
unusual for him. He’s only surprised when Hayato wraps a hand around his cock
and strokes it in earnest, his finger stilled inside him. “Hayato,” he half
moans, half gasps, this time saying his name without his earlier annoyance. He
tries to push his hips up, but that’s when he notices his brother’s second hand
holding him down.
“Feels okay?” Hayato is cautious when he starts to bend the first knuckle of
his finger just to wiggle it around.
“Feels weird... but,” the younger takes a deep breath and tries not to pant
already, smile resonating from his eyes, “It doesn’t hurt. Keep going, Haya-
nii.”
The second finger, a feat he was never able to accomplish on his own, hurts a
lot more than the first. It isn’t unbearable, but it’s definitely a stretch. He
can tell Hayato is being carefully, however, because the older spends a lot of
time slowly working open the tight ring of muscle at the forefront, using a
sufficient amount of lube and the tips of his fingers to massage him.
Meanwhile, his cock isn’t forgotten and it’s a nice distraction that he’s sure
is helping open him up. Soon enough, the two digits are fully sheathed and
easing in and out of him. It eventually becomes a pleasant feeling and he
thinks Hayato can read that by his expression. The older teen starts to rub
small circles inside him, occasionally scissoring his fingers and twisting
them, progressively stretching him.
Underneath him, Yuuto has started mewling his compliments, making sure his
brother knows how good it feels with more than the satisfied expression on his
face. Hayato is still blushing, but he’s calmed down significantly from before
they began this process. His dick is absolutely hard and uncomfortably caged up
in his briefs.
The third finger is much easier to handle than either of the other two were at
first. Between the insistent moaning, squirming, and Haya-nii, Haya-niiiii that
plagues him from the fingers now thrusting in and out of him, he hardly notices
that the hand that was on his cock is gone and Hayato is using it to lube up
the toy.
“Relax,” he hears his brother whisper as he hovers over him and kisses the
middle of his chest. His lips linger, eyes glancing up to watch Yuuto’s face
change when the tip of the toy is pressed against his hole. Pressing it into
him slowly, he kisses the rest of his chest up to his neck, mouthing at the
vein on the left side. Yuuto grits his teeth and tips his head back, the
stretch from the toy just wide enough that he needs a moment to adjust to it. A
messy hand helps him by firmly stroking his cock, helping him relax around the
girth. After what feels like too long, his ass swallows the toy and it’s
starting to envelop his mind as well. He’s so full and he imagines it should
feel wrong, but it doesn't, it’s great.
The hand on his cock is weaned off. He can feel Hayato smirking against his
neck, but Yuuto doesn’t think anything of it until he’s laughing, too, and a
second later, Yuuto is screaming because he forgot all about the fact that the
toy vibrates and it feels so fucking good rattling up his spine and through his
entire body. He moans, louder than ever, his cock hard and dripping against his
stomach. Hayato laughs again and kisses his brother’s cheek, feeling extra
cocky as he asks, “Do you like it?”
Yuuto doesn’t answer because he can’t, instead his entire body quakes and he
keeps on panting, begging, Please Hayato, Please. He tries to move his hips
anywhere to get anything but Hayato holds him down and starts fucking him with
the toy, slow at first, building speed as he deems fit by the begging,
whimpering, and other filth spewing from his kid brother’s mouth. He’s careful,
but relentless. It takes longer than he expected, but the silicone curves just
right and pounds directly into the spot that has him seeing stars. Yuuto is
crying now, he feels so good, and Hayato is soaking up all of the sounds and
faces, desperately hard and excited to flush one out to the memory. Twice more
the toy hits his prostrate before he’s spilling, he can’t take it anymore, and
once he’s wrung dry, he sobs out of joy.
Hayato kisses his younger brother’s face lovingly, smiling against the corner
of his full lips. “Are you okay, Yuuto?” he asks, but Yuuto’s breathing is
heavy and he’s gone limp against the sheets, so all he can do is nod. Streaks
of white cover his chest and has stained some of Hayato’s shirt. Hayato turns
the toy off before it can become unbearable for the other and slips it out,
setting it aside for cleaning later.
Once Yuuto can breathe properly again, he wraps around his brother and directs
their lips together, kissing him keenly. “That was so good,” he says, babbles
between kisses, “You have to buy me one of those, okay? Okay, Haya-nii? I
really, really want one.”
“Maybe for your birthday. It’s coming up, right?” the brother asks, relaxing on
top of him as they continue to kiss.
“Mmmm,” he nods, answering noncommittally, attention shifting elsewhere when he
feels a heavy weight between his legs that doesn’t belong to him. He slides a
hand between them to meet the violating member and cup it, earning a hitch of
his brother’s breath. He smiles lazily, hooking his arm around his brother’s
neck and keeping his ear in reach. “Haya-nii, did that turn you on?” he
whispers into it, smirking. He palms the others groin feeling just how hard he
is underneath his clothes.
“It’s fine, Yuuto, I’ll take care of it,” he avoids the question, closing his
eyes and trying to break free from Yuuto’s grasp, but the hand on his dick has
him trapped, “Let go, I’m going to the bathroom.”
Yuuto doesn’t let go, instead he wraps his fingers around the outline of his
brother’s cock and strokes him firmly through his sweats, appreciating the size
of him. “I got mine, but… Haya-nii, you didn’t get anything, did you?” Yuuto
sounds like he’s putting on the innocence act again and Hayato knows he’s done
for. Literally dead. He whimpers softly.
“I bet you wish…” Yuuto pauses, planning out his words. He squeezes Hayato as
he continues, “that you were inside me instead, huh?” Hayato moans past his
bitten lip and Yuuto knows he hit the nail on the head. Now, he needs to think
of the right words to say to please his brother. Yuuto wants to be in charge;
now is his only chance until the next holiday break for Hakone. Hayato, who is
far too aroused for his own good, knows exactly what the younger boy is
planning and can see no way out, so he gives in and lets it happen. He doesn’t
actually want to take care of it himself anyway, but Yuuto looked so spent and
tired that he didn’t even consider asking for help… He nods in response,
agreeing with the other while simultaneously asking for more.
“You would have loved fucking me, Haya-nii.” When did Yuuto learn to sound so
lewd? “You saw how my ass swallowed the toy whole, right? That could have been
your cock making me cry like that.” Hiding his face in Yuuto’s neck, he pants
heavily, pushing his hips into the smaller boy’s hands. Yuuto slips his hand
past the waistband of his sweats, but he makes a point not to take him out of
his briefs. He kneads the swollen flesh over cloth quick and excessive,
focussing on his balls every so often. “So good, it felt sooo good… I bet it’ll
feel even better when you fuck me next time.”
Hayato tries to fight his own voice to keep quiet, but it’s hard when he’s on
sensory overload. Yuuto’s words are fucking with him more than he expected them
to. His dick twitches in his briefs, staining the cotton his pre-come is
soaking into.
“I want you to come inside my ass next time, Haya-nii...”
His orgasm washes over him almost instantly after that, Yuuto’s words
dangerously licentious. Whimpering into the sheets below his face, he curses
and rides the high by bucking into Yuuto’s hand until he can think properly
again and push himself up enough to look the other in the eye.
Yuuto is smiling and he looks sincerely happy, and Hayato can’t find anything
wrong with the picture when it brings him just as much joy. He smiles too, dips
down to kiss his brother’s filthy mouth, and says “I’ll come home next weekend,
too.”
 
 
 
End Notes
     H A HAHAH HA A...haha...ha... oh man, that happened
     I'm on Twitter @bunnaby and Tumblr @eternalmakoto, come chat with me
     about gross stuff
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