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An often overlooked aspect of any journey to self-discovery is their tendency to begin in the unlikeliest of places. For Shinonome Akito, it begun several inches inside his sister’s girlfriend’s ass. The realization wouldn’t strike him until later, as hindsight is oft wont to do, that this was not the destination, but merely the starting point for questions worth asking. Ones unlike:
“Can’t you even spare a kissy, lil’ bro?”
Because a question isn’t worth asking when its answer is already known, and Akiyama Mizuki could see the answer to hers coming well before she saw it spelled on an all-too-eloquent frown.
“Hell no.”
She didn’t take offense to that. God forbid she threaten the last remnants of lil’ bro’s precious pride, which had seemingly found its last bastion of resistance in his stalwart, pouty lips…
“You gonna wipe that dopey grin away anytime soon, Akiyama?”
No, she was not. He wanted to cling to his cool so badly, he’d have to work hard for it, and she’d make sure to let him know she’d be enjoying every second.
“Hehe… I can feel you slowing down, lil’ bro.” It was more than that. Mizuki did not hide the mischief in her smile as her finger poked a bead of sweat on Akito’s chest and begun tracing salty circles around his nipple. “I think… someone’s ready to bust~!”
The reflection of his frown poured into her sultry gaze. He bared his grinding teeth like fangs against her not-so-innocently bitten lip. Akito knew that a retreat at this crucial point would spell a defeat even less acceptable than the one already churning in his testicles. It was the kind of pointless mental gymnastics Mizuki had come to expect from him. Seeing Shinonome Akito try and utterly fail to maintain a firm grip on his aloof persona was half the reason she enjoyed being his sex friend. The other half, of course, was that once he got over the mortifying hurdle of admitting he was into something (or someone), Shinonome Akito fucked crazy good.
“And I think you’re gonna eat those words.”
It took took some effort to muster enough willpower and hold his impending demise at bay, but Akito managed to get a grip. On himself, but more importantly, on the source of the gossamer smear spreading right beneath Mizuki’s navel.
“H-hey, that’s cheating…!” But it was too late. Her grin became warped, made less firm by the warm pressure of Akito’s digits around her twitching cock, the tip of his thumb delivering agonizingly slow strokes on the underside of her glans. She didn’t know whether to relish or regret that he was clearly cribbing from the repertoire of techniques she usually reserved for him--
“A-ah~!”
Actually, scratch that. She hoped he’d built an entire portfolio worth of those.
“What was that? Care to repeat?”
Akito stole Mizuki’s grin and wore it with sadistic satisfaction, but the expression that blossomed on her visage in its stead threatened him even worse than the smothering embrace of her insides.
“Lil’ bro…”
Ah, shit. By the time his brain sent the signal to dodge, Mizuki’s delicate fingers had already reached out and locked his head in place. It was that damn flushed face of hers, the misty-eyed gaze doing away with all the same pretense he stubbornly clung to. A plea spelled on faintly moaning lips: to embrace raw pleasure – to embrace her and melt together into a puddle of fleeting ecstasy with which to fill the cracks in their daily lives.
“You’re really…”
A pain in the ass, his tongue was poised to say. Addictingly cute, Akito cursed his brain for daring to think. He put some momentum in his wrist in an attempted diversion, to give him the upper hand in a contest he was struggling to care for anymore. His hips followed suit however, spurred by the frenzied rhythm of his heartbeats as much as the sensation of Mizuki’s heels digging into his butt. An invitation to thrust deeper, faster, to solve the contradiction between two opposing yet complementary desires: to steep into this heated moment, stretching it into a pleasurable infinity, or to race towards the irresistible supernova of their impending climaxes.
“I-it’s coming… I’m--!”
He felt her clamp down around him, all but a scant few millimeters of his length caught in the tight vise of Mizuki’s ass, as if she were clinging for dear life to the very instrument of her demise, or perhaps trying to bring Akito down with her. Victory was in his hand – so he stopped moving it, strengthened his grip to better feel the girl’s pulsations just as closely as the walls of her rectum were feeling his. To enjoy a second more of her struggle, the beads of sweat trickling down her furrowed brow, her lips curling inwards, her pale chest’s slow rise and rapid fall. Her misty gaze locking into his, growing larger by the second… no, she was pulling him in. Effortlessly, with arms made too weak by the lack of energies she was concentrating in her loins to prevent their imminent release. Yes, it had to be that. It would have been out of the question for Akito’s mouth to seek hers, admit to a magnetism he was powerless to resist…
It was hard in the moment to imagine that, much later, he would regret far more than having forgotten to lock the door to his room. The sound of it slamming open resonated louder than the bang of a gun: the glare it revealed may as well have been one, the way the color drained from Akito and Mizuki’s faces when they saw whom it belonged to.
“Having fun, are we?”
Shinonome Ena had made it clear that she could tolerate her girlfriend banging her brother, out of affectioned respect for the former’s freedom of choice and an utter lack of care for the latter. Crucially, this did not mean she was champing at the bit to watch Mizuki (who wouldn’t have minded) getting her ass plowed by Akito (who very much would have). So it begged asking why, rather than stepping back, closing the door, and looking up methods to achieve short-term memory loss on her phone, Ena instead elected to step forward, shut the door with her heel, and sit on the one available chair in the room, arms and legs folded in a way that made it clear she had every intention of staying put.
“Go on.” Her encouraging nod made her chin look she would have gladly stabbed either of them with it, had she been able to. “By all means, don’t let me interrupt you.”
In their rapid exchange of glances, neither Akito nor Mizuki found the other particularly eager to fish for clarifications – Ena’s icy gaze promised too sorry a haul to bother trying anyway. To hell with the why’s, then, and straight to…
“Are you fucking kidding me?”
No, Akito, your sister really wasn’t. She had every intention of keeping her ass firmly planted on that chair and see how much contemptuous staring a dick could withstand before it would inevitably go limp out of shame, frustration, or a wicked combination of both.
In the midst of the simmering battle between Akito’s furrowed brow and Ena’s defiantly arched one, a lone voice of reason arose that belonged to neither of them.
“Look, Enanan, me? I’d be all for it, but the mood’s gotten kinda…”
Mizuki’s smile was sheepishly deflated – about as much as the part of her lying limply in Akito’s grasp, tip slick with but a milky drop of the deluge she’d been denied. Neither sibling seemed move to pity by the sight, and if anything it served to drop the temperature of their gazes to an even chillier degree. Which, predictably, did not help restore the flow of warm blood between Mizuki’s legs.
The first to look away was Ena, although only for the brief span it took to roll her eyes, inhaling air before letting it out as if she were breathing fire. Her chin rose by a few degrees, as many it would take to make up for the height discrepancy between the sofa chair she sat in and her brother’s bed, ensuring she could look down on the two miscreants lying on the latter. Until her gaze fell further, landing on the box of condoms lying in plain sight on the small table in front of her, and somehow narrowed even more. At this point, her eyes were no more than hair-thin fissures, pinpricks stabbing straight into two people hoping she’d gotten fed up enough to let them try and bring a halfhearted conclusion to their interrupted deed.
“Fine. I’ll take care of it.”
And she did stand up, to be sure. Only, what neither her sibling nor her girlfriend expected for Ena to do was to start building a pile of clothes at her feet, or to do so by peeling away the ones she was wearing.
“Wha—Exactly what do you think you’re doing, here?”
Akito’s reaction sounded understandably less enthused than Mizuki’s ‘Yooo?!’, which earned her a glare from the former she was too eager to ignore. It was hard not to, busy as she was with following the descent of Ena’s panties (a particularly racy pair made of all-but-transparent lace Mizuki herself had gifted to Ena, who was adamant she’d never ever bother wearing them) down her legs.
“It’s really simple.” And it truly did feel so, now more than when she had been the sole dressed person in the room. Funny how logic tends to work even when turned on its head. The two steps she took out of her piled up garments filled her with confidence, rather than robbing her of its last shreds. Perhaps, all the blood rushing to her head had reached its boiling point, mutating her embarrassment into something else entirely.
“I’m going to show Mizuki what she’s been missing out on.”
Maybe, she’d just recalled feeling frisky and ready to have Mizuki help with that right up until coming back home to hear her girlfriend’s unabashed moans coming from her brother’s room. The mysterious ways of the human brain were beyond her ability to care right now anyway. The heat between her legs was making a much clearer claim on her impulses.
She almost felt like smiling while she circled around the table. Two transfixed gazes followed her slow advance expecting her heels to spin on the floor, bringing her out and back into a world where reason rather than this weird flavor of folly reigned supreme. Ena met those increasingly wider eyes with the triumphant look of an invading queen who had made another’s reign her own.
Akito didn’t fail to notice the hot warmth of Mizuki pushing against the stifling walls of his grip. That did not bother him. What did bother Akito was growing feeling of tightness way down below – and the fact he couldn’t tell with certainty if it was Mizuki’s insides clenching around him.
No. What the fuck? No. Stop that. Stop looking at her like—stop looking at her, period. He cursed the chemicals in his brain for daring to get his wires crossed. Considered purging himself of them then and there, consigning them to the condom he was wearing along with whatever load he could wring with a few frantic thrusts, but it was already too late by the time Ena knelt by his bed.
Akito barely felt her slap his hand, swatting it away to leave her free reign on Mizuki’s cock. The faint stinging sensation helped him focus his thoughts, settling them back into familiar patterns of dismissive annoyance he injected in his glare. Ena barely spared him one back. Her fingers met the pale skin of Mizuki’s testicles, coiled around them to feel their contents.
“Hm. Good.”
She offered her approval with a glacial gaze, her voice colder still. It only served to make Mizuki’s flushed face grow hotter, the blood rushing through her penis boil to the point she thought she could see it melting – but no, of course not. It was only her mounting desire, frothing and leaking from her bared tip. It was a plea for the satisfaction she was earlier denied, echoed in her puppy gaze, despite awareness of its futility. The way Ena’s fingertips trailed up Mizuki’s penis was deliberate in its unhurried slowness, agonizing in its faint stimulation. The manner in which they wrapped around the twitching flesh, gentle and possessive at once, a challenge to the earlier monopoly of her brother’s larger hand on her girlfriend’s body.
If anyone could dictate the pace now, it would be Ena.
“Not that I can talk, but what happened to having some shame?”
Akito wouldn’t let his sister have it so easily. She answered his irritation by stabbing him with a nonplussed gaze.
“Take a guess.”
The staring contest persisted while Ena pursed her lips to stick a freshly opened condom over them. She made sure to keep staring intently at her brother while she leaned her head down and ever so slowly made Mizuki’s cock disappear in her mouth. Didn’t even blink until, after an interminable while, her lips retreated across the length of Mizuki’s erection, leaving it dressed in the shiny peach latex of one of those fruit-flavored condoms she always insisted on buying. Because it made fellatio more palatable than sucking on something that tasted like plastic, or so she said.
Credit where it’s due, the sweet aftertaste left in the back of Ena’s tongue made for a pretty strong argument in her girlfriend’s favor.
“You can hold out for a bit longer, right?”
She turned to face Mizuki with an expression that made it clear what she’d worded as a question was merely an order in a flimsy disguise. Mizuki, too busy diverting her strength and willpower to the bursting dam that were her loins, gripped the sheets beneath her tightly and managed to flash something resembling a smile. It was not reassuring. Ena did not care, neither for the struggle she was about to have her girlfriend put up, nor the fact that…
“I can see everything, you know.”
She looked down at her brother as she stood up, one knee already poised on the edge of his bed. At the fissures that were his eyes, condescendingly dancing across her naked body, like she’d somehow forgot she’d stripped down and required that reminder of what she’d brazenly put on display. Nipples like pink, swollen islands in the middle of an ocean of skin that too many hours spent inside her room had painted a shade too bright. The outline of her hip bones like a half-finished arrow pointing at the unmistakably trimmed contours of her pubes – a sprinkle of cinnamon over a strawberry macaron.
“I wish I could say the same.”
Her gaze drifted down, wrapping across Mizuki’s balls to linger on the half-visible length of her brother’s penis buried inside her girlfriend. A moment too late, her choice of words finally managed to put a dent in her impassive mask, making it bleed red all over her face.
“W-whatever, move over.”
Her palm met Akito’s chest with a loud slap as she pushed him to sit straight and began awkwardly clambering the bed. Even from her first row seat, Mizuki couldn’t begin to guess who seemed to be cursing harder beneath their breath: the sister, berating herself for nearly letting her composure evaporate, or the brother for his heightened awareness of the current situation’s sheer insanity.
She wondered, Mizuki, as her mind began to harbor those very same thoughts the Shinonome siblings were trying their damnedest to banish from theirs. She wondered how Ena felt about offering her brother the sight of her twitching holes, of her labia parting as she slowly lowered her lips. She wondered what went through Akito’s mind while watching her penis be swallowed by his sister’s pussy. She wondered, Mizuki, as she watched the Shinonome siblings’ silhouettes overlap, if she would be able to drag them into the same depths of forbidden desire where she’d already fallen.
No. What the fuck? No. Stop that. She could almost hear Akito in her head, giving a voice to her reason. The part of her brain that should have pulled the brakes on that particular train of thought, but which not-so-unfortunately went silent the moment Mizuki found herself filling a Shinonome while simultaneously being full of the other one.
“You’re harder than usual… you dumb perv…”
Ena’s pride told her she should have minded the implications more. The treacherous walls of her vagina screamed louder, telling her all of that nonsense had stopped mattering the moment she mounted Mizuki. A chorus of sensitive nerve ends were begging her to turn up the tempo on the excruciatingly slow rise and fall of her hips, and all that kept her from giving in was warmth of her brother’s body, separated from her bare skin by a mere smattering of centimeters.
She couldn’t let him see her lose control. Had to make it clear that this was just an assertion of power, of the fact that she could debase like this only because he meant nothing. He was nothing. An unnecessary brushstroke on an otherwise perfect canvas.
Oh god, she really wanted to just fuck Mizuki dry. She resented her brother’s presence, but the resentment only served as a reminder that he was right behind her, watching her have sex, so close he could have touched her. Too late to do anything about it, she could only commit to the bit while steeping in shame until the very end… no, long after that. The memory would become a curse, fated to resurface whenever they’d look at each other.
Ena hoped with all her might it was simply Mizuki growing larger inside of her. Had her hands not been gripping the sheets so tightly, she would have slapped them over her ears to try and shut the cacophony of squelching noises between her legs, which seemed to grow louder in tandem with the strange thoughts filling her head.
If there was a silver lining in all of this, it was that her brother’s gaze couldn’t penetrate the layers of sweat and skin covering her body to read her mind.
It was hardly a consolation to Akito, stuck in place by the stubborn refusal to flee from his own room and – in minor part, he doggedly kept telling himself – by the freakishly mesmerizing spectacle of his sister fucking the same person whose ass he still had his dick buried in.
He couldn’t tell at what point his disgust had begun ceding its place to a different kind of feeling. The sight of Ena’s nude body, swaying sensually to the rhythm dictated by her lust, existed too apart of his conception of her. Try though he might, he found himself unable to fit this piece amid those forming the mosaic of their shared lives: the more he tried, the wider a gap formed between the fragments representing the various stages of Ena’s growth, turning them indefinite and blurry while the outrageous picture in front of him etched itself vividly in his head.
Not a stranger, and yet she felt like one. Someone he felt like he didn’t know anymore, and whom yet he was beginning to know better than he ever had.
The contradiction scared him less than the reconciliation of its opposing notions. He clung to it, thinking it his only salvation, lost in the roiling waves of sensations he didn’t wish to acknowledge. Like the sensation of Ena’s weight pressing on his cock through Mizuki whenever she let herself fall on the latter. The sight of her ass shaking with her every movement. The sound of her labored breaths, interspersed with the occasional, badly stifled moan.
Just sit and watch. Let her do her thing and leave when she’s satisfied. It should have been easy. It would have been easy, had his common sense been left free reign on his dwindling sanity.
It would have been easy, had Mizuki not noticed the cracks in his stony expression. Or had she not felt his penis twitching like a ticking time bomb inside of her. Maybe then he wouldn’t have had to watch her grin mischievously as her hands reached out, her slim fingers grasping Ena’s ass hard enough to sink into her supple flesh. He wouldn’t have had to hear his sister, too lost in the throes of her pleasure to realize what she was doing, gasp as her anus was stretched wide open, moan with a kind of anticipation he never in a million would have expected of her.
Akito’s eyes fled. They wandered across Ena’s back, following the tiny bumps of her spine like dunes of a barren desert. What his gaze found, once it climbed over the horizon of his sister’s heaving shoulders, was no oasis to slake his thirst for reason, or wherein he may drown the sickness taking over his mind. No, it Mizuki’s face, the pink blush of her cheeks glistening with perspiration, and in her strained smirk Akito found the answer to a question he hadn’t intended to ask to begin with.
Yeah, lil’ bro. Your sister loves to do it with her butt.
Ena froze, her hips poised for another gentle drop, another taste of Mizuki inside her. It wasn’t by choice – not her own, anyway. Too clouded by the mists of pleasure, her mind registered the anomaly but failed to process it in any meaningful way. She realized, if vaguely, that more fingers than the ten already grabbing her ass had gripped it. Strong, rougher hands than her girlfriend’s squeezed the upper portion of her buttocks, bit into her with the hunger of a rabid beast. Her body tensed up from the pain, but even her fear was colored by the endless wellspring of her lust, leaving her blind to the sole, absurd explanation for what was happening.
What she wasn’t blind to was Mizuki’s gaze below hers. The mixture of guilt and excitement, a devilish invitation to seize the occasion – or to let the occasion seize her, as it were. She should have glared at her girlfriend, Ena, washed her face with vomit for the infernal fate she’d set in motion. And Akito… she should kicked him, broken as many bones in his body as it would have taken to stop him. Not to punish him, but rather to spare their future selves the ordeal of untangling the exact meaning of what they let happen.
Oh, god… she shouldn’t have shivered like that, when she felt the tips of her brother’s thumbs push into the creases surrounding her twitching asshole.
Because the moment she did was when it was truly, utterly too late. Because it was then that Akito pushed her ass down and, in the very same instant, slammed his hips into Mizuki.
It didn’t count. It wouldn’t count. All Akito was doing was fucking Mizuki’s ass. All Ena was doing was to let him pull her hips up and down. It was Mizuki’s cock thrusting inside her. She knew that, they all knew that and still, they couldn’t settle on so simple a fact.
Because Ena could feel it. The force of her brother’s every thrust, rippling from Mizuki across the walls of her vagina. The impact of her butt against the rock-solid wall of his abdomen’s muscles.
Because Akito could feel it. The weight of his sister’s body falling onto him through Mizuki. The soft warmth of her ass in his palms’ grip.
The pink-haired girl stood between them, at once a threshold against the ultimate taboo and its utmost facilitator, ignored by both siblings as she cummed her brains out.
They were getting there too, the Shinonome. Every thought reduced to a blur of sweaty flesh, a symphony of heavy grunts and insensate whines underscored by the bed’s creaky protests. Loud, intense, desperate. Accelerating together towards the end, as if afraid of what could happen if the ball would be allowed to stop in the middle of the slippery slope.
“P-pleaaaze… time, time-ough...out…!”
Unfortunately, as far as balls went, Mizuki’s had been wrung dry, their contents sloshing precariously within the flimsy layer of latex preventing them from flooding Ena’s womb. While her heels weakly pushed against Akito she offered a tired, apologetic smile – although she was less sorry about what she had induced the siblings to do and more that she couldn’t follow them to the finishing line.
Their heaving breaths echoed louder now that the room wasn’t getting flooded with the fracas of slapping flesh. Akito blinked, not quite out of his stupor, unable to recognize the fingers clutching his sister’s reddened ass as his own. He looked further down to find Mizuki’s quivering hands pulling her softening penis out of Ena, the brightly colored condom’s latex stretched thin in the struggle to drag the semen-filled portion away from the tight embrace of her pussy.
Akito found it relatively easier to leave the embrace of Mizuki’s insides, only to end up dumbfounded at the sight of his own enduring erection. The twitching tip of his penis, hovering oh so close to his sister’s empty hole. Ena’s anus, its pink rim framed by his thumbs. His fingertips, rubbing those soft creases, kneading that hole into a myriad enticing shapes.
The embers of his unsatisfied instincts were burning him from within, making fuel of his ability to think rationally.
“W-wait, Aki—”
Akito did not wait. He did not listen to his sister, choking on her voice as she tried to smother a fire of her own. He wanted to empty himself of everything and saw right in front of his face the means to do so.
His hands slid across Ena’s body. It was hot, slick with her burning sweat. His fingers found purchase on her waist and grasped it firmly.
“Don’t.”
She felt the head of her brother’s cock poke her asshole. She arched her back, felt his head against her nape. Shut her eyes, for fear of staring in Mizuki’s and seeing desire reflected where she should have found resentment and disgust, hatred and revulsion.
The siblings’ breaths accelerated, vying for a synchronicity they were on the verge of finding. A crescendo Mizuki felt awed to witness from so close, with a kind of pride unblemished by any guilt stain.
Any second now. All Ena had to do was to relax her body. All Akito had to do was to steel his muscles and drive himself past the point of no return.
“We can’t…”
A whisper. The dying gasp of Ena Shinonome’s sanity.
“Who cares anymore.”
A groaning murmur. The defeat of Akito Shinonome at the hands of his primal urges.
He pushed. He felt his sister’s body begin to unfold around his tip.
And then, as the cold reality of what he was about to do washed over him like a bucket of gelid water, Akito ejaculated the hardest he ever had in his life. And as her asshole felt the warmth of his cum churn against the thin layer of latex wrapped around his penis, Ena followed suit, squirting until both Mizuki and the bed and ended up drenched.
The siblings fell, Akito backwards while Ena limply draped over Mizuki. One covered his grimacing face with his arm, the other buried hers into her girlfriend’s chest. Together, they basked in the bittersweet afterglow for all it was worth, already dreading what awaited them beyond it.
Well. The siblings did, anyway.
"Sooo, what now?"
Mizuki Akiyama, who had somehow found it in herself to spurt one last yet intense orgasm of her own from the sheer magnitude of what she’d witnessed, was happy to court every idea she could envision to make possible a future encore.