
Posted originally on the Archive_of_Our_Own at https://archiveofourown.org/
works/12876300.
  Rating:
      Explicit
  Archive Warning:
      Underage
  Category:
      M/M
  Fandom:
      僕のヒーローアカデミア_|_Boku_no_Hero_Academia_|_My_Hero_Academia
  Relationship:
      Dabi/Todoroki_Shouto
  Character:
      Dabi_(My_Hero_Academia), Todoroki_Shouto
  Additional Tags:
      Incest, Sibling_Incest, other_content_not_mentioned_in_tags
  Stats:
      Published: 2017-12-01 Words: 1382
****** shell games ******
by leifmotifff
Summary
     Dabi and Shouto share a well-planned moment of intimacy. Sort of.
Notes
See the end of the work for notes
“Will we get in trouble?” Shouto asks, placing a hand on Dabi’s shoulder for
support as he moves to straddle his lap.
They’re both naked, and Dabi shifts slightly on the mattress to accommodate
him, hands settling on Shouto’s pale thighs.
“Depends who you tell,” he says, the chill of the metal bed frame seeping into
his back.
Shouto gives him a coy little smile. “I won’t tell anyone,” he promises. He
wraps a slender hand around Dabi’s cock, guiding it towards his entrance, smile
stretching into a smirk when Dabi’s breath hitches at the contact.
Shouto pushes himself abruptly down on Dabi’s cock, sliding almost all the way
down the hilt without much care for his body. They’d prepared him a little, but
not enough, and his flushed face pinches now at the discomfort. Dabi’s hands
move automatically up Shouto's sides out of instinct, running over his skin in
soothing motions, silently coaxing him to relax. He does, gradually, and Dabi
lets his hands travel hungrily over Shouto’s body, like some creature that
feeds through the pads of his fingers instead of his mouth, until Shouto’s
still so hot and tight all around him but not so much that it’s impossible to
move.
Shouto breathes out, a long, steady exhale, slipping a little lower around
Dabi’s cock, and a small, strangled sound gets caught in Dabi’s throat.
Thankfully it’s not long before Shouto winds his arms around his neck – starts
to rock his hips slowly, back and forth, sighing as Dabi’s cock rubs and slides
and stretches him.
“F-feels good,” Shouto mumbles, half-lidded eyes meeting Dabi’s from under his
slightly damp fringe, a faint smile playing across his lips. 
His chest is a little broader, muscles a little more developed than the last
time Dabi had him, but he's slim enough that he still looks like he was made to
sit in Dabi’s lap, to squeeze his cock just like that, so hottightperfect as he
undulates above him, and Dabi has to consciously control his breathing, has to
force himself not to grab those bruisable hips and just ram up into him.
“Mm.. Onii-chan..”
Dabi lets out a sharp breath, grip tightening on Shouto’s hipbone. “Don’t,” he
warns, voice a bit strained as he fights to keep in a moan.
Shouto giggles, eyes gleaming beneath long lashes. “But you like it – I can
feel your dick twitching inside of me,” he whispers, clenching around him for
emphasis. He lifts his hips, drawing almost all the way off, and stops just
under the ridge before dropping down, fucking himself onto Dabi’s cock, and
Dabi bites hard into the inside of his stitched-up cheek, trying to stifle a
groan. Shouto moans obscenely, head thrown back and eyelashes fluttering,
before pressing his sweaty forehead against Dabi’s for the space of a few
breaths, crooning sweetly, teasingly, “Onii-chan…”
Fire builds in Dabi’s gut, his chest, everywhere, his hands flexing and
unflexing around Shouto’s hips like he’s not sure if he wants to throw him off
or keep him firmly in place. But Dabi can hardly think past that tighttight
heat around his cock, the feverish press of skin against his chest and thighs,
Shouto’s gentle, goading movements, so willing, so game.
Dabi rubs his thumbs along the soft, tempting skin of Shouto’s inner thighs. He
closes his eyes briefly. 
“‘Nii-san,’” he eventually concedes, voice low.
“Oh.” Shouto blinks. “Nii-san,” he amends, and that little smile is back when
he feels the immediate way Dabi responds to it, the hot gust of breath, long
fingers splaying, digging into the flesh of his ass, the thick flex of muscle
under his skin. Shouto grips Dabi’s shoulders in response, starts riding him in
earnest, pushing up on his knees and then slamming himself down on Dabi’s cock,
bottom lip caught between his teeth, thighs shaking a little with the effort.
It’s good—really good, but it’s still not quite enough, so Dabi grabs Shouto’s
hips more forcefully, changes something in the angle of his thrusts, so that
when Shouto sinks down again his whole body jolts, two-toned eyes going wide
and mouth falling open as he jerks and shudders, winding his arms around him
once more.
“Oh, Nii-san,” Shouto breathes again, sounding like admiration and like worship
and like everything Dabi wants as he mewls and buries his face into Dabi's
neck. “Nii-san, fuck me, please,” he whines softly, quietly into the scarred
skin there, and Dabi really does groan this time, pushing his nose into
Shouto’s disheveled hair and breathing deep, trying to imprint the scent into
his memory. He tightens his grip on Shouto’s hips, pulling him down harder into
each thrust, savoring how unbelievably good it feels to fuck deeper and deeper
into him.
Shouto doesn’t moan like before, just makes all these punched out, breathy
noises, breath stuttering with every slam of Dabi’s cock. He shivers and
clutches at him, tightening his ass around him at just the right intervals
until Dabi’s groaning, pistoning his hips harder and faster into him, the heat
and friction of it almost overpowering. Sweat slides slickly between their
bodies, and Dabi loses himself in the sound of their skin slapping together,
the rake of Shouto’s fingernails against his back, the barely-there brush of
small, wet lips against his as they pant into each other’s mouths, never quite
meeting in the middle. 
He doesn’t see the edge until it’s already crashing towards him, and before he
knows it he’s coming with a harsh, guttural sound, arms going tight like a vice
around the small of Shouto’s back. He presses Shouto as close to him as he can,
practically folding the slighter body into himself as he spills his release
inside of him, muscles spasming, cock pulsing as he thrusts through his orgasm,
sliding in and out so easily with the added slick. 
The aftershocks eventually ebb, and Dabi loosens his crushing, tingling hold on
Shouto, his breath still a touch ragged. He leans back against the bed frame
and reaches for Shouto’s cock, only for his eyes to fall on the sticky mess
painting both their stomachs.
Dabi frowns. Shouto had come at some point, and Dabi hadn’t even noticed.
He’d been so much quieter than usual.
The familiar, post-orgasm self-loathing he’s been experiencing lately after
jerking off starts to creep up between Dabi’s shoulder blades. He’d thought
this would help, perhaps get it out of his system – but intense though the high
had been, looking at the drying splash of come between their bodies now, Dabi
feels distinctly unsettled. Disgusted, maybe, at how shamelessly he’d just used
Shouto’s flesh to get himself off. 
But then, that was the point, wasn’t it?
Shouto untangles himself from Dabi, and Dabi lifts his gaze in time to see
Shouto watching him with surprisingly clear eyes. And then that small smile
that was just a bit off on his brother’s face melts, in what looks like
grotesque slow-motion, into thick, gluey drops, along with the rest of his
skin, dripping like wax down both him and Dabi to pool in the quilted fissures
of the mattress.
Toga climbs off of him a moment later, unabashedly naked, and Dabi takes in her
petite, feminine form as she hops gracefully off the bed.
“That was fun,” Toga says cheerfully, turning back to him, and he notes warily
that the wonted, half-glazed look of madness has returned to her eyes.
But it’s just a cloak, a veil—one she had initially fooled him with, as well.
Underneath it… Dabi swears he can see her staring through every stratum of his
defenses—the sinister pleasure she takes in getting not only inside the skin of
her victims, but under that of those close to them. 
Dabi’s stomach clenches. When they had agreed to do this, he thought he would
be getting more out of their little arrangement than Toga; now he’s not so
sure. He feels ripped open, his bones itching with the odd feeling of having
played a game he didn’t win.
Toga seems to sense his vexation. “Don’t worry. Your secret’s safe with me…
Onii-chan,” she adds, with a grin like she’s holding a knife in her teeth.
It’s a gesture, sort of, and he actually believes her.
They don’t do it again.
End Notes
     This was loosely inspired by some fan_art I saw a couple days ago.
     Normally I would link at the beginning, but well... ♡
     Thanks for reading! Find me on twitter @leifmotifff for more bad nii-
     san!
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