
Posted originally on the Archive_of_Our_Own at https://archiveofourown.org/
works/1793536.
  Rating:
      Explicit
  Archive Warning:
      Underage
  Category:
      M/M
  Fandom:
      Free!
  Relationship:
      Mikoshiba_Seijuurou/Nanase_Haruka
  Character:
      Mikoshiba_Seijuurou, Nanase_Haruka
  Additional Tags:
      denial_AU_SeiHaru_porn, Twitter_is_conduit_of_all_things_EVIL, and_my
      friends_are_terrible_enablers, Not_My_Fault, except_the_part_I_wrote_the
      whole_thing, also, Tachibana_Makoto_Has_A_Large_Cock, seriously, Mention
      of_Captain_Tripod, because_no_Free!_porn_is_complete_without_mentioning
      Makoto's_junk, Sorry_Not_Sorry, Will_I_Still_Respect_Me_in_the_Morning?,
      But_I_regret_nothing, First_Kiss, First_Time, Loss_of_Virginity
  Stats:
      Published: 2014-06-16 Words: 3788
****** Challenge Accepted ******
by Shaed
Summary
     An AU take on Chapter 7 of Ad_Astra’s Denial_is_Not_Just_a_River_in
     Egypt. AKA Twitter is the conduit of All Things Evil.
      
     NOW WITH CONTINUATION BY THE LOVELY unsospiro: we_were_breathing
     underwater
Notes
     First of all, this is an AU take on Chapter 7 of Ad_Astra’s Denial_is
     Not_Just_a_River_in_Egypt. If you haven’t read it yet, SHAME ON YOU,
     what are you even doing here? D: D: D:
     Inspired by the lovely cohorts over at Twitter, all of whom are
     terrible, terrible enablers. Credit for the original idea goes to
     Sospi, as explained by Astra:
     Astra: It’s the alternate ending to Denial ch 7. Sei:"Never tried it
     Nanase?" Haru: "Never interested." Sei: *grins* "I can change that."
     Except there was a tiny problem:
     Astra: HOW will it even go orz Haru swings wildly from clinical to
     curious to YOU ME FUCK NOW.
     Shaed: ...That could work. :D
     This was the bastard lovechild. Also known as "Hips Don't Lie" and
     "Better Than Saba" – and I would totally have used them both except
     the darn fic doesn't actually MENTION anything about lying OR saba,
     sadness. D: We will always have "Denial AU SeiHaru Porn" I guess? XD
     Thank you, Ad_Astra, for the beta! All mistakes are subsequent to
     beta-session and therefore entirely mine alone.
See the end of the work for more notes
  This work was inspired by
      Denial_is_Not_Just_a_River_in_Egypt by Ad_Astra
“It’s kind of true though,” Nanase says thoughtfully. “I do everything with you
and Makoto except for the sex.”
Seijuurou jostles him playfully with an elbow. “Aww, Nanase never tried it?”
Nanase shakes his head. “Never interested.”
Seijuurou raises an eyebrow. "I can change that," he drawls before he can think
better of it. Matusoka is too busy sputtering to even notice, but Nanase’s brow
quirks up at that.
Matsuoka finally recovers enough to start yelling why is he the girlfriend,
Nanase is the pretty one, blah blah. Seijuurou pays him little heed, distracted
by the brief glance Nanase shoots him, at once assessing and intrigued, before
Nanase turns back to retort something about Matsuoka's bath products.
Seijuurou likes to think of himself as open-minded. He's been stuck in an all
boys' school for three of the most hormonal years of a teenage boy's life. Cute
girls aren't easy to come by, and often require more time than he's willing to
divert from his pool time. If he weren't willing to experiment a little, it
would have been very frustrating three years. Frustration affects performance,
and that, he cannot allow.
Nanase, though. Given how much interest Nanase usually shows in non-aquatic
bodies, which is a grand total of zero, Seijuurou hadn't expected that little
glance.
Ah well. He doubts anything will come out of it. So he waves off Matsuoka, who
huffs away with a basket which looks suspiciously like a bath set, and leaves
them to it.
                                     * * *
As another perk of attending an all boys' school, Seijuurou hears (and makes)
his share of sex jokes all the time. In fact he would have entirely forgotten
the quip he'd made to Nanase if it hadn't been for that odd expression on
Nanase's face. Still, he would have thought he'd be the last person Nanase
would pursue that with.
Which is why he is really surprised to receive a phone call from Nanase a week
later.
"So? What can I do for you?" he asks after putting Nanase on speaker phone, his
attention still mostly on the paper he was typing when the phone rang.
There is a short silence on the other end. "I thought about what you said,"
Nanase starts, then pauses. "I want to take you up on your offer."
Seijuurou stops typing to stare at the phone. "Which offer?" Seijuurou asks,
although he can guess. He can't pretend he hasn't thought about it, but he
wants to make sure they are on the same page.
"About changing my lack of interest in sex," Nanase answers, voice so
incongruously deadpan that Seijuurou has to blink to make sure he hasn't
imagined the words.
Seijuurou really had been mostly joking last week. Not entirely, but mostly.
And he really hadn't expected Nanase to pursue the topic. At least not with
him. "Okay," he says, drawing out the syllables thoughtfully. "Any particular
reason for this development?"
He can practically hear Nanase shrug on the other side. "You offered. I'm
curious."
Seijuurou raises an eyebrow even though he knows Nanase can't see him. He can
turn Nanase down, easy. Pass it off as a joke. Instead, what escapes his mouth
is, "If you're sure."
"I said so, didn't I?" Nanase sounds a bit miffed. "Are you available today?"
Talk about racing ahead. Seijuurou can't help a smirk. "Sure. You wanna come
over?" Samezuka has an indoor pool, after all. If Nanase changes his mind at
the last minute, at least they'll have a back-up plan.
"I want to swim first," Nanase says, which just makes him laugh. "I can be
there in an hour."
"Figured that. Meet you at the pool, then. I'll leave the door open."
"Alright."
"How did you get my number?" Seijuurou asks before Nanase hangs up. And what
did you tell them? he adds mentally.
"Rin's sister."
Seijuurou lets out a sound that's halfway between amused and horrified and
hopes the poor girl didn't ask what Nanase wants his number for. Because he has
a feeling Nanase would have told her the truth and wouldn't that be interesting
to explain?
"See you in an hour," Seijuurou says instead of airing his concerns, to which
Nanase hums in affirmative, then hangs up. He shakes his head in disbelief,
then dismisses the thought. He still has a paper to finish, and some warming up
to do before Nanase arrives.
                                     * * *
When Nanase arrives at the pool, he doesn't even glance at Seijuurou, diving
straight for the water. Then he swims a couple rounds before he returns to the
diving blocks, where Seijuurou is watching him.
"You wanna race?" Seijuurou asks, and Nanase shrugs. He isn't Matsuoka and
isn't that keen on racing on his days off, but Seijuurou is a competitive
swimmer at heart and Nanase is a fine opponent any old day. "Y'know, I'm not
your wife or girlfriend, so I'd appreciate a verbal answer, Nanase."
"If you want," Nanase replies carelessly, ignoring the rest of the dig.
"Get up here, then."
Nanase pulls himself from water with unhurried grace that reminds Seijuurou of
a dolphin lifting out of the water. They step on the blocks together, and
belatedly, Seijuurou recalls they don't have anyone to referee—
"On three," Nanase says. "Two."
"One," they say together, and dive.
Underwater, nothing else matters. Just his body cutting through water. Sweet
ache of muscles. Speed. There are three things Seijuurou loves the most in his
life: swimming, winning, and an opponent who can push him to break records.
Nanase is two out of the three. Possibly three out of three, although they'd
hit the wall so closely that he honestly can't tell.
"Well?" he prompts as they both pant.
Nanase shrugs. "Couldn't tell. Want to go again?"
Seijuurou laughs, bright and sharp. "Yeah, why not?"
                                     * * *
After four more rounds they make it back to Seijuurou's room. He has a single
room, so privacy is no concern. But when the door closes behind them, Seijuurou
can't help feeling a mite weirded out.
"Why me?" he asks bluntly. He doesn't think Nanase is particularly attracted to
him. Plus Nanase said that he has never been interested before. If it's out of
simple curiosity, this is an odd and slightly disturbing way of going about it.
Nanase makes a little sound, non-committal, and purses his lips. "I usually go
to Makoto for everything else. I can't, about this."
There is that, Seijuurou supposes. Still, he wants to cover all his bases. "You
ever done this before?"
"No."
Seijuurou has about figured that. "You sure about this?"
This time there is a split second delay before Nanase meets his eyes. "Yes."
Then, a crease enters between his brows. "What's the big deal? I've never been
interested before. But you offered, and I’m curious.”
Seijuurou can't help a short bark of laughter. Seriously, Nanase is weird even
for one of Matsuoka’s friends. "I’m not sure about you, but most people attach
some significance to their first time.” Nanase shrugs again, and he decides to
let the sleeping lions lie. It's not as if he gets young attractive virgins
begging him to deflower them every day. He may as well take the opportunity
offered. "Okay, then." He pulls off his shirt and raises an eyebrow at Nanase.
"Well?"
Nanase sheds his clothing without so much as a shrug. Seijuurou has seen him
naked before. A week before, to be exact. But it's surreal, the way Nanase
strips without a shred of self-consciousness. At least his dick is taking an
interest in their intended activity for the afternoon; for a moment or two,
he'd worried just because their situation is so out of touch with normalcy. The
same cannot be said for Nanase, but that's precisely what Seijuurou is here for
today.
"You ever try so much as kissing someone?" Seijuurou asks once they're both
naked, stepping closer to Nanase.
"I tried to kiss Rin last week," Nanase answers thoughtfully. Before Seijuurou
can digest that he continues, "He pushed me into the pool."
"I thought Matsuoka was dating Tachibana?"
Nanase shrugs minutely. "It was a test. Rin didn't want to. That's all I wanted
to know."
Seijuurou shakes his head and decides to leave that alone. "You and Matsuoka
really are something else," he says, repeating what he'd said the night before.
Without further ado, he tips up Nanase's chin and presses his lips against
Nanase's, keeping the pressure gentle. The semi-hysterical thought occurs to
him that he is Nanase's first kiss, in fact soon to be first everything else.
The day can't get any weirder, can it?
It takes a couple tries before Nanase takes the hint and opens his mouth. At
least Nanase is a quick study. So he loses no time introducing tongue, and is
amused to note Nanase immediately follows the suit, returning the kiss with
growing confidence. Despite himself, Seijuurou finds himself kind of getting
into it.
"Let me know if you want to slow down. Or stop," Seijuurou tells him when they
pull apart. Is it just him or did Nanase look a little breathless? "Breathe
through your nose," he advises him before pulling him into another kiss.
Aside from his looks, which definitely work in his favor, there is something
appealing in the utter unselfconsciousness with which Nanase does everything.
Nanase's soft, Seijuurou can feel it, an awkward contrast to his own half-hard
state. He intends to change that in short order.
There is no reason to beat around the bushes, he figures, and unceremoniously
reaches between Nanase's legs. Predictably Nanase jumps, but doesn't pull away,
so Seijuurou takes it as a permission to continue. For a short while nothing
happens, and just when Seijuurou is wondering if he should feel insecure or
possibly offended, Nanase's cock twitches.
Every teenage boy has done at least this. This is familiar. It takes just a few
tries to figure out the rhythm Nanase seems to prefer, and Seijuurou strokes
him to full hardness easily enough.
"Is this," Nanase starts, then stops. "Should we move to the bed?"
Seijuurou can't read Nanase's face that well from this angle, so decides to
take the invitation at face value. "Sure."
Nanase is a little flushed, but still doesn't look embarrassed or even bothered
by his current state. And he eases himself down on Seijuurou's bed with a
certain deliberation that makes Seijuurou feel strangely motivated if somewhat
irritated. It's a trifle galling to his pride that Nanase still doesn't look
actively interested even when he's aroused. Nakagawa is going to laugh at him,
tell him he's too prone to thinking with his dick, but come on, they are
teenage boys. Nanase's detachment is unnatural.
When Seijuurou climbs on the bed and reaches for Nanase again, the boy stirs
impatiently under him, then lets out a soft huff of a breath. "What's the
difference between this and doing it alone?" he asks, sounding almost annoyed
even with his cock full and hard in Seijuurou's hand.
Seijuurou stiffens despite himself. Oh, Nanase just didn't.
"This, for one," he drawls, and moves down to take Nanase in his mouth. He does
have the benefit of experience here, and this is one thing a guy can't improve
on without practice. Nanase's back arches and he thrusts up impatiently, but
Seijuurou is having none of that. Sure, this is supposed to be about making
Nanase interested in sex, but it's still sex and he's not taking this in any
direction but his own. So he pins Nanase's hips to the bed with both hands,
lets out a questioning hum just to be a bastard. Nanase twists, testing his
grip, but subsides with little more than a faintest sound. And it is on. Stupid
male ego or not, Nanase is not leaving his bed without properly screaming his
head off first.
So Seijuurou licks experimentally, tightens his lips and relaxes his throat,
and makes a concerted effort to suck Nanase's brain out through his dick.
Fortunately for his poor abused ego, Nanase becomes a hell of a lot more
enthusiastic in gratifyingly short amount of time. After a few more tries at
dislodging Seijuurou, Nanase spreads his legs wider, plants his feet, and uses
the newfound leverage to push down, hips drawing tight, obscene circles that
makes Seijuurou laugh around Nanase's cock, and that makes Nanase groan, so
it's a win all around. From fingers tightening in his hair, the tensing thighs,
he knows Nanase's close, and considers his options. Unthinking, he makes
another humming sound, thumb stroking over the boy's hole, and abruptly Nanase
thrusts up, like he's been startled, and comes messily in Seijuurou's mouth.
Seijuurou sits back, rubbing his throat, but can't help feeling a bit smug as
he surveys his work. Nanase looks dazed, and where's his never-been-interested-
is-that-it attitude now? Seijuurou affectionately pats one firm thigh, admiring
the way his tanned fingers stand out against the creamy skin. He almost regrets
rushing ahead – alright, so maybe he can admit he let Nanase goad him into
going faster than he'd intended. But the afternoon is young and so are they.
So he runs an inquisitive hand over Nanase's flank, caresses the soft skin of
Nanase's thighs, and gets a tiny frown of confusion for his trouble.
"Wow. You really don't know anything about hooking up, do you?" he says
wonderingly. What, did Nanase never watch porn either?
Nanase has to clear his throat a couple times, much to Seijuurou's smug
pleasure. "I caught Rin and Makoto a couple times."
That's a little bit more than he would have wanted to know, to be frank, but
something niggles at him. Unless Nanase’s in the habit of barging into private
rooms, he doubts Nanase caught them doing anything more than making out or a
quickie at best.
"Well, there's the basic point,” Seijuurou says. “And then there's technique.
And style."
Nakagawa would have smacked him for that, but Nanase looks like he's on more
familiar grounds. "Sex is like swimming, but there are different ways to do
it?" he asks, and Seijuurou lets out a startled laugh.
"Something like that, yeah. Look, a lot of people learn how to swim so they
don't die when dropped in the water. And some people are okay with just that."
"You're not," Nanase says, and it's half a question and half a statement of
fact.
Seijuurou grins at him. "Why settle for less than the very best? Just takes
practice. And willingness to learn."
Nanase actually looks intrigued now. Seijuurou smirks and waits as patiently as
his own unsatisfied cock permits. "Show me," Nanase says simply, and Seijuurou
allows himself a moment of satisfaction before kissing him again.
Nanase's skin is so pale despite all the swimming he must do outdoors. And
soft. Smooth and unblemished, stretched taut over firm muscles. He also turns
out to have delightfully sensitive nipples, and Seijuurou makes a mental memo
to play with them more next time. If there is one.
Either way, Nanase's dick is definitely taking a more active interest now,
stirring as he experimentally humps against Nanase. He reaches between them and
wraps a hand around both their cocks, and the sound Nanase makes soothes his
ego at last.
"See, your problem is you only think in terms of necessities," Seijuurou says,
almost conversationally. "Sure, you can swim all by your lonesome. But doing it
with somebody else is—" His voice nearly breaks over the word because Nanase
actually humps back. "—more fun."
"More intense," Nanase agrees, breathless and flushed. "You have more incentive
to reach your goal."
Seijuurou grins, bright and brash. "Exactly."
Then his world narrows down to heat and friction and the little hitching sounds
Nanase makes in the back of his throat. Nanase's famed slim fingers join his,
and he swears and comes, making a sticky mess between their bodies. While he
recovers Seijuurou notes Nanase is still hard and wonders if he should feel
vaguely guilty before remembering that's because Nanase already came once
before. Still, they're young and there are other things they can do. It's not
like his body won't catch up in a little bit.
"What else?" Nanase prompts, wrapping a leg around Seijuurou in an oddly
intimate way that should have felt out of place but doesn't. It's Nanase, after
all. Seijuurou doubts Nanase even notices it.
"What, you wanna go all the way?" Seijuurou is honestly a little surprised.
Most boys their age, when fooling around for the first time, are generally
comfortable with handjobs and have more or less reasonable idea of how blowjobs
work. But most tend to shy away from penetrative sex, at least with another
boy. Seijuurou may not share the usual male hang-ups about it, but that's not
to say he's ignorant of them. "You even know how that works?"
Nanase gives a half-shrug. "Rin seems to like it."
"TMI, Nanase. Also, how do you even know?"
"They did it in my bathroom once. While they were over for a barbecue."
It's hard to tell with the deadpan voice, but Seijuurou has a sneaking feeling
Nanase's telling it exactly like it is. "They got it on in your bathroom? Shit,
I guess we're lucky they didn't get that far in our club showers." Then,
Seijuurou's eyes narrow. "Wait, how do you know Tachibana topped?"
Nanase blinks. "Rin was having trouble sitting down afterward."
"To be fair, anyone would after fitting that up his ass." Seijuurou shakes his
head wonderingly. And he hasn't noticed any change in Matsuoka's time, either.
He has new dawning respect for Matsuoka.
Nanase gives a tiny shrug and shifts, apparently unperturbed by the idea. "His
time isn't affected. Unless you noticed otherwise."
"No," Seijuurou agrees. "But that's not to say it'd be comfortable...why are we
even discussing Matsuoka and Captain Tripod again?"
Nanase remains annoyingly unconcerned. "If you're that worried you can let me
put it in."
"What? No." The refusal is automatic and immediate. As a rule Seijuurou doesn't
bottom often, but that's beside the point. The point is Nanase is younger and
inexperienced and not even interested in sex until fifteen minutes ago. The
point is that nobody should be brazen enough to suggest what Nanase just did,
especially during his first time.
Nanase lets out a little huff, lifting his chin with a little shake that makes
the soft dark hair fall gently around his pretty, pretty face. Nanase's dark
blue eyes glimmer up at Seijuurou with an alarming intensity. "You said you
could convince me," Nanase challenges, his oh-so-slim fingers tracing his spine
all the way down to the tailbone.
"Damn straight," Seijuurou retorts without thinking, then realizes he swam
right into that net. God damn it, Nakagawa's going to have a good laugh at his
expense tomorrow. Nanase shifts against him, dips curious fingers below his
tailbone, and Seijuurou very nearly forgets his annoyance. "Oh fine. Here, let
me fetch something."
He retrieves his stash of condoms and lube he didn't bother to prepare earlier
because he didn't think they'd get this far. "You know, you don't have to learn
everything at once," Seijuurou reminds him. "We can practice. Take our time."
Nanase's smirk is now all bite. "Only if it's worth learning."
Seijuurou swears, and the amused look on Nanase's face briefly reminds him of a
dolphin: all playful sweetness and people forget they're predators armed with
sharp teeth and fierce intelligence. Quite possibly, he may end up regretting
this whole thing in the morning.
Ah well. Mikoshiba Seijuurou lives for the challenge anyway. He tosses Nanase
the square packet of foil and straddles him. "You need me to walk you through
this part or what?"
Nanase shrugs and lets Seijuurou put a little drop of lube on his dick and roll
a condom over it. Eh, at least Nanase is no Tachibana. He shouldn't end up too
sore tomorrow. After a moment of fumbling with the recalcitrant tube, Nanase
makes a sound of impatience and takes it from him, deftly uncapping the tube
one-handed before looking over questioningly. Seijuurou nods and leans forward.
"Start with one finger and work your way up," he advises simply, and Nanase
complies without comment. For a first-timer Nanase's fingers are sure and
skillful, prying him open with a gentle force.
By the time Nanase has three fingers inside him, Seijuurou is dangerously close
to forgetting why this was a bad idea or how they even got into this whole
mess. "Fuck, Nanase. Lube up your dick and do it already," he growls, and
Nanase looks mildly surprised before giving him a tiny smile.
At least Nanase doesn't have to be told twice. Seijuurou feels Nanase's cock
nudging at his hole, and sighs. "Fucking finally," he mutters and sinks down
smoothly until they're flush against each other. And finally Nanase looks
blissfully wrecked, and too stunned to care. Nanase's hips jerk with a
strangled sound, and Seijuurou swallows his own moan, smirking down at him.
"Let me know," Seijuurou drawls, rising up teasingly slow, "when you're
convinced." Without waiting for an answer he sinks down hard, wringing a
desperate sound from Nanase, then does again.
He rides Nanase hard and fast, until Nanase catches on and matches him stroke
for stroke, keeping pace with him. He's full, Nanase a slick heat inside him,
and as much as Nanase shakes and moans under him, he knows he's not going to
last, either. Seijuurou is determined to make Nanase come first, however, and
sinks down harder. He leans back and Nanase's cock rubs his insides just right,
and he moans appreciatively, tightening. Nanase lets out a shout, sharp and cut
short, head thrown back, and that gorgeous picture is burned on his retina when
Seijuurou comes.
When he opens his eyes again, Nanase still looks undone, his eyes closed, and
Seijuurou takes a moment to congratulate himself on a job well done. He takes
another minute before moving off Nanase and stretching out next to him.
Nanase finally opens his eyes and turns his head to look at him seriously.
"What does that feel like?"
Seijuurou chuckles, pleasantly surprised. "Tell you what. Why don't you let me
show you next time?"
Nanase considers this. The comical gravity of his expression nearly sets
Seijuurou off again, but he restrains himself. For one, he's curious about
Nanase's virgin ass. It's quite a visual treat. It'd be interesting to find out
how it feels around his dick.
"Alright," Nanase says. Seijuurou grins at him brightly. He's quite pleased
with himself, but figures he has good reasons to be. "Next week?" Nanase
continues, and Seijuurou gives in and laughs.
"Yeah, sure. Why not?"
-- June 2014
[ETA] NOW WITH CONTINUATION BY THE LOVELY unsospiro: we_were_breathing
underwater
End Notes
     I'm more active on Twitter than Tumblr for those painfully
     disappointed by my lack of updates on the latter. Sorry~!! It's
     @le_shaed for anyone who wants it? Just...er, be warned that all I
     EVER talk about on Twitter is smut. Seriously I have more NSFW tweets
     than not.
     Lastly, a real-life event is looming close, and with seriously a LOT
     of regret, I have to put all fic-activity on hold until the end of
     this month, or possibly the second week of July. I'm very, very sorry
     to those waiting for Superposition update.
     And thank you SO MUCH, ladies, for all your encouragement and
     enabling over at Twitter. You know who you are. ♥
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