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! Please drop_by_the_archive_and_comment to let the author know if you enjoyed their work!