Posted originally on the Archive_of_Our_Own at https://archiveofourown.org/
works/4355168.
  Rating:
      Explicit
  Archive Warning:
      Underage
  Category:
      M/M
  Fandom:
      Free!
  Relationship:
      Mikoshiba_Momotarou/Nitori_Aiichirou
  Additional Tags:
      past_mention_of_underage_fondling, sexually_confident_ai, small_dick_fic
  Stats:
      Published: 2015-07-16 Words: 1577
****** out of our heads ******
by searwrites_(sears)
Summary
     for anon that request momoai with momo having a small dick and ai
     loving it.
     (also for someone else who requested something pertaining to that
     scene where momo thinks rei's cookies are from gou-- they didn't ask
     for anything rated, so i'll keep their name off of this filth just in
     case !)
Notes
See the end of the work for notes
 
Ai has never claimed to be innocent.
 
It's always just assumed. His size and stature, the softness of his voice-
- people tack on what they know to fill the gaps in what they don't, and it
seems that small and unassuming usually equates to innocence.
 
But that just-- it isn't the case with him.
 
Ai wouldn't consider himself particularly dirty, but there are certain things
he likes. Certain things he'd had to overcome himself enough to go for, certain
hurdles that required an inbuilt sense of bravery that Ai was only just
learning to hold on to during his stint in high school. When Ai decided his
interest in Momo was more physical than anything else, he acted on it. Because
he could, yes, and because he knew how to do it.
 
 
That first night had ended with Ai's fingers in Momo's mouth, and Momo coming
in his pants after rutting against Ai's leg.
 
 
Ai is two years into university now, and he can safely say what he has with
Momo is much more than simply physical, but it took a while to get there. Momo
was his own worst enemy when it came to hooking up, keeping it casual. He
nearly panicked the very first time they got completely naked together in their
dorm room, Ai as a senior and he in his second year. He had to have all the
lights off, and only let Ai explore his body blind in the dark.
 
It isn't like Ai didn't know the very first time they touched-- he could quite
easily feel the smaller than average size of Momo's cock rubbing against his
leg when he'd been eating(quite literally) out of Ai's hand.
 
Momo was only a first year, but Ai never battled with guilt for that, seeing as
he didn't push Momo any further than he ventured on his own. It was after he'd
made such a fuss over Rin's cookies that one time, thinking that Gou had made
them. Ai, if nothing else in high school, had liked to prove himself. And
proving himself to Momo meant baking a batch of the sweetest chocolate macarons
he could muster.
 
"Try this," Ai had said, and instead of taking it from him like Ai had
intended, he bit the cookie straight from Ai's hand. 
 
As the physical embodiment of a hurricane that Momo can sometimes be, he'd
crumbled the rest of it in a mess all over Ai's palm, down his fingers. He
snatched Ai's wrist, held it close to his mouth, and licked up the entire
length of Ai's forefinger.
 
 
And Ai let him. It was rare for him to get what he wanted at that time. 
 
 
 
Now it's a little different-- Momo isn't quite so insecure, something that
comes with age as much as it does with being in a more emotionally committed
relationship for almost a year now, and Ai can be more upfront with how much he
loves it.
 
 
"You close?" Momo's voice shudders out of him in heated puffs of breath, his
face sheened in sweat and his nose close enough to Ai's that they brush every
time he fucks into him.
 
Ai moans a little-- quiet and purposefully intimate, something only Momo has
ever heard-- and wriggles his hips down and back.
 
"Mm'yeah," he says, the tail end of the word curling around a hitching whine.
 
"God," Momo gasps, and then his head drops some of its weight as he pushes into
Ai more fully, his still somewhat teenage enthusiasm pushing each thrust closer
toward the territory of 'desperately horny'.
 
The thing is, Ai loves it like this. He loves that Momo's dick fits neatly into
his hand, that he can fit the entire length of him snug into his mouth,
sometimes even his balls too. Momo will tease him with fingers to begin with,
and then that first push of his cock inside him doesn't hurt, ever, it only
feels wet and warm and perfect. It's... so much better than he ever expected.
 
While Momo continues to fuck him with no break in his fervor, his heavy,
panting breaths begin to get stuttered and wheezing. Momo has sweat dripping
from his forehead into his hair, the ends of it tickling Ai's collarbone, and
he sounds wholly consumed by the act of pleasing Ai with his body. Ai had
always been told being fucked doesn't mean somebody loves you, but perhaps it's
different after you peel everything back and allow someone see every part of
you.
 
Ai pulls Momo's face up so he can see him better, swiping his sweaty hair off
his forehead and to the side as he kisses him. He sucks Momo's lower lip into
his mouth until Momo's frantic hips slow down and he begins to moan. Ai wraps
his legs around Momo's waist, tilts his hips and squeezes, until he can feel
Momo snug up against him. Momo's erratic thrusts turn into a slow, grinding
roll, and Ai moans similarly desperate into Momo's mouth, the both of them
having parted just enough to breathe.
 
"This okay?" Momo says, dipping his head enough to nip at Ai's lips. "You like
that?"
 
Ai tightens his legs around Momo's waist, out of his mind hot for the way
Momo's dick stretches him just enough to spark every nerve-ending he thinks his
body has down there, and he slides his fingers into Momo's hair as he nods
frantically, gripping bunches of Momo's wild bed-headed hair as he does.
 
 
Momo drops his head again, and Ai knows he's beyond exhausted, so he flips them
both over, lets Momo get settled comfortably on his back before positioning
himself over him. Ai sinks down onto Momo's small cock, and it slides into him
so easily, the sensation wholly enticing-- in the way he has all of Momo in him
that will fit, in the way he can rest his full weight on Momo's hips and it
only ever feels amazing. 
 
Momo plants his feet flat on the mattress, though he doesn't push much, lets Ai
take the reigns and watches with his mouth dropped open in something like a
dumb stupor. He runs his hands up Ai's belly as Ai rolls his hips on him, the
contact of their thighs scorching. Ai can even feel Momo's balls shift against
his skin, every inch as deep as Momo's cock will go.
 
Ai balances with a hand on Momo's ribcage and he whimpers when Momo starts
thumbing his nipples, squeezing with his hands around the softer bits of Ai's
chest-- though there isn't much to play with. His muscle toning has gone to
shit in the last year, but Momo never seems to care very much, still lavishes
Ai's nipples with an attention Ai is sure that part of him doesn't quite
deserve.
 
"So cute," Momo half speaks, half moans. He arches his back so that Ai is
somewhat perched on the bony peaks of his hips, and then surges up as far as he
can sit under Ai's weight when Ai yelps at the sensitive sting of his nipples,
all pinked and hard.
 
Momo's torso is long enough that he can lean forward, resting a gentle but
guiding hand on Ai's lower back, as he kisses across Ai's chest, wet and with
tongue when he pauses on Ai's nipples. 
 
It's something about the way Momo holds him that sparks the zip of heat up the
base of Ai's spine-- like he's letting Ai control this, but wants bad enough to
contort himself so he can touch.
 
Ai comes with one hand gripping hard at the back of Momo's hair, the other on
his own dick, his ass clenching down on Momo as Momo grips hard at his sides,
his back, his face pressed blindly into Ai's chest. Ai lets go of him once the
sensation subsides, and then Momo is lifting Ai's hips just far enough to fuck
into him with only the tip of his cock. After a few enthusiastic thrusts
upwards he shouts into Ai's collar and fills up the condom he's wearing. 
 
Afterward, entirely fucked out and half beaming from it, Momo flops onto his
back and squeezes his eyes shut as he stretches out like a cat, grinning like
he just caught a mouse. He tilts his head to the side on their pillows while Ai
wipes them off as best he can, assuming the both of them are too tired to
shower right now.
 
Ai sits back on Momo's thighs once he's tossed the newly messy boxers he'd
grabbed from off the floor back to where they came from, and lets himself slump
a little, catching his breath. Momo slides a hand up Ai's thigh, rubs at his
hip and thumbs the protruding bone there.
 
Momo bites his lip, and Ai already knows it's coming--
 
"You know, this all started with you baking me cookies," Momo says through a
tilted grin, and then he smacks playfully at Ai's asscheek with swift,
practiced precision. "Could use some sustenance, I'm a growing boy."
 
Ai groans, rolling his eyes in fond exasperation as he climbs off of Momo
entirely. It isn't all bad, he thinks, as he watches the boyish charm
practically radiate off of Momo-- the way he folds his arms beneath his head,
completely comfortable being naked and on display.
 
"I'm dating a child," Ai grumbles to himself, but he goes to grab him a package
of cookies anyway. 
End Notes
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