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i want to share your sin

Summary:

“Oh, you’re awake,” Atsushi says, voice thick but tone matter of fact.

“Don’t talk with your mouth full,” Akutagawa says on reflex. Atsushi snorts, then presses a kiss to his inner thigh.

Notes:

hiii enjoy this. it's been inspired by Serena's (piraeli on discord) art, posted at the end of the fic.

work title is from heavy by birdtalker

Work Text:

He wakes up wet.

That in and of itself isn’t too unusual. Since his transformation into a vampire did not revert even after the death of Bram - and his own resurrection - his body has been slowly acclimating to being well fed, healthy, thriving.

Ironic that it took becoming an undead monster to reach this point, but he is not complaining. It means his body is no longer held together by sheer force of will. His labs were finally stable enough for him to start T, to get top surgery. There are other side effects, either of becoming healthier or the vampirism, he doesn’t know. He sleeps deeply, no longer on edge. He’s gained weight. His ears are still pointy, almost elf-like, as the weretiger points out.

That, at least, he is certain is from the vampirism.

All that to say, with his deeper sleep and occasional erotic dreams, it’s not super unusual for him to wake up with his boxers soaked. Atsushi was always quick to notice, aided by a tiger’s nose. More than once he’s woken from a dream to find the weretiger’s hands on his body and his physical body was able to pick up right where his metaphysical self has left off.

A tongue drags itself across his clit and Akutagawa arches his back and garbles out a moan.

“Fuck - weretiger,” he mithers out. His heart rate beats rabbit fast in his veins and his head spins, still caught somewhere between dreaming and awake.

(Another luxury he has quickly grown accustomed to- waking and not needing to immediately take stock of surrounding dangers)

“Oh, you’re awake,” Atsushi says, voice thick but tone matter of fact.

“Don’t talk with your mouth full,” Akutagawa says on reflex. Atsushi snorts, then presses a kiss to his inner thigh.

He raises his head and looks at Akutagawa from his position between spread legs. His expression is very cat that ate the canary, smug and self satisfied. Akutagawa’s juices are smeared across his nose and cheek.

Now that he has a moment to settle into his skin, he feels the response in his body. Groin throbbing as his heart rate races, and cunt squeezing and clench around nothing. He’s not so much wet as he is gushing, lubrication coating his pussy and thighs.

“You were moaning in your sleep,” Atsushi says, “And I -”

He remembers now. A dream of getting absolutely fucking wrecked by the weretiger until he was sobbing and pleading. Not to stop - never to stop. But for another round, then another, then another. He’d never been one to quit when he was ahead.

“I said, don’t talk with your mouth full,” he drawls.

Atsushi cocks his head to the side, confused.

“And you should have your mouth full right now,” he finishes.

Atsushi laughs and presses another kiss to his thigh before drawing his tongue down the entire length of him. Hard to believe the boy was a virgin up until a month ago - his full hearted devotion to Akutagawa’s pleasure was always so earnest and boisterous that Akutagawa went from never having an orgasm at someone else’s ministrations to becoming an overstimulated sopping wet mess on the regular.

He opens his mouth and moves it onto him, letting the heat of his breath warm up his cunt. A push and then his tongue is inside, spearing him open. Strong hands wrap around his thighs and hold him in place as Atsushi groans. The sound reverberates, vibrating him. He feels his cunt pulse, pulling him in further. He’s wet. He’s so fucking wet and it’s so good and at the same time, he needs more.

The hands on him tighten. That too is good, his squirming stopped with Atsushi’s hold. The weretiger is powerful, more so now than ever. After finally escaping his wretched orphanage he’s finally started gaining weight - more than that, he’s gained muscle. The first time he’d removed his shirt under Akutagawa’s questing gaze, he’d been bashful and shy and Akutagawa had not expected the bulging biceps or powerful shoulders. His boyfriend can hold him in one arm without any use of his ability.

It should have been humiliating, or at the very least, annoying.

Instead it was intoxicating.

So much of Atsushi was, like the way he uses Akutagawa’s noises like a sonar to see what feels good at the moment.

He pulls his tongue out and wraps it around his clit instead. Fire coils in his belly, an inferno threatening to ignite.

“So sensitive,” Atsushi murmurs before sucking the bud into his mouth. This time he attacks it with the tip of his tongue. He opens his mouth and it is exposed to the cool bedroom air with a small ‘pop!’. The mix of heat and cool, of pressure and exposure makes his head spin.

He reaches down and threads his fingers in the fine silk of Atsushi’s hair. “More,” he hisses, as he pulls the weretiger closer.

Atsushi listens.

He continues to suck, release, suck, release, suck, release. His head spins in response. The fire rages inside him. How long had Atsushi been working him before he woke up? Enough that he feels languid and loose while simultaneously tight and poised. Every frantic edge is pulled taut, like he’s a marionette on strings. The ache inside him ebbs away as Atsushi lets go, only to push closer to shore as he takes his clit in his mouth again.

The room spins.

He digs the palms of his hands against his eyes. “Fucking hell, weretiger,” he says. Only after the words have left his lips does he get the oddest sense of deja vu.

“Wanna please you,” Atsushi murmurs. Every word is a vibration against his aching clit. He digs his heels into the mattress and groans as he straightens out his spine. Atsushi laughs, deep yet boyish at the same time. “I’ll take that as I’m doing a good job.”

“Yes,” Akutagawa hisses. He can be cruel, can be vicious, but there is a limit. Atsushi deserves the praise. It would make him a liar to deny his pleasure when it is written on the sheets with his cum. He squeezes his eyes shut, then opens them again. Moonlight illuminates the room. It’s still early, long before his alarm would require him to get up. The soft noise of city life comes in through the cracked open window, dulled by the distance from the street up to his high-rise apartment. Just him and Atsushi in the room. He is fully awake now, though his guard is still down. It can be, because there is no one in here but them and they have fought hard for this, this safe city and profound joy.

Atsushi’s hands move. One hikes up Akutagawa’s shirt, exposing his chest. He’d thought it’d be awkward, the first time they had sex, to show his scars. He wasn’t expecting Atsushi to blink at them and ask what that meant.

Sometimes it was easy to forget just how sheltered the other man really is. Once Akutagawa had explained, that had been that. No other questions other than ‘does this feel good?’ and ‘what do you want’.

Now he feels exposed, but not vulnerable. No, there is only reverence in the path Atsushi’s mouth takes, pressing kisses against his pelvis, then his lower abdomen. They trail up his stomach, tickling as the weretiger climbs up his body. His head ducks and then his left nipple is engulfed. Akutagawa gasps, a cut-off hoarse noise. Like this, he can feel the weretiger’s body as it presses down on him. More importantly, he can feel the weretiger’s erection, pressing against his inner thigh. The boy still wears his pajamas, but the thin fabric is no protection against feeling him.

Teeth.

Atsushi presses his teeth around his nipple in something like a bite and Akutagawa moans again. His head tips back and he opens his own mouth. Sharp fangs snap at the night air.

“Do you want to feed?” Atsushi pulls off to ask.

He thinks. He’s fed from the weretiger recently. Enough so that this feeding would be just for pleasure, not for substance.

But…

“We will already need to clean the sheets,” he says, almost off hand.

Atsushi laughs.

Outside, a car starts honking.

Inside, Atsushi suckles at his nipple until he’s kicking out and whimpering. He’s sensitive - another new development he’s not sure who to thank - the testosterone, or his vampirism, or just Atsushi.

He bites down harder. A heady rush of pain makes him ache. “Atsushi,” he breathes out.

Atsushi kisses him. Hard. Teeth clinking on fangs. Mouths not so much meeting as colliding. He draws back, then steals another, licking into Akutagawa’s mouth and tongue invading as though he doesn’t have two impossibly large fangs to work around.

Blood fills his mouth. Atsushi has nicked his tongue. Without thought, he swallows it and his brain lights up. It’s not an orgasm, though he still feels that looming on the horizon. The heat of blood on his tongue is intoxicating and painfully alive.

Atsushi pulls back, pupils blown and lips still crimson. He leans in and licks it from his lips, just to taste a little more of the weretiger’s blood.

“Byakko hates that,” he says softly as he presses a gentler kiss on Akutagawa’s lips. “Me feeding you. She thinks it's unbecoming of an apex predator. Or at least, I think that’s what she thinks. It’s not always words I get from her.”

Akutagawa curls his fingers into the fabric of Atsushi’s sleep shirt. “Interesting. Tell me more after you’ve fucked me.”

“Impatient,” Atsushi laughs.

He might not survive until the morning.

Akutagawa hasn’t decided.

He lets go of his shirt and reaches between their bodies to palm Atsushi’s erection. He finds the weretiger’s cock with ease, and finds he too has caused a mess. Precum stains the front of his pants, quickly found as Akutagawa’s fingers seek the head and stroke it easily. Atsushi grabs his shoulders and pins him to the bed, but doesn't restrict his hands from moving.

Now it’s Atsushi’s turn to go pathetic, whimpering and mewling and gasping as Akutagawa strokes him over his clothing. “Fuck me,” he demands. His fingers dive past the waist band and shoves his pants down. Atsushi reaches down. Their fingers brush. Akutagawa knocks them out of the way. One more yank and his cock is free, thick and heady and perfect.

“Good boy,” Akutagawa purrs. He twists his wrist and coats his fingers in his own pussy juices before wrapping them around Atsushi’s cock. It slides under his hand, velvet smooth. He likes stroking it. In just two flicks of his wrist, Atsushi has gone from smug and self-satisfied to groaning and quivering on top of him. Part of him wants to hold onto this cock because he knows he can get anything he wants from the weretiger right now. However, the only thing his mind can think of is having this thick cock inside him - filling him, taking him, fucking him. His own lust far trumps any desire to play games.

He hooks one leg around Atsushi’s waist, and shifts his hips. With one quick thrust, the weretiger fucks into him.

Nails clench at Atsushi’s shoulders. He’s lost his mind. There was a need - now he’s full. The weretiger’s cock drags at sensitive inner walls, filling him until he’s stuffed to the brim. Thick cock, muscled, suntanned. This is not the scared little boy Akutagawa first met in a dirty alleyway. This is a man, grown into his power, into his body.

So is Akutagawa. Enough so that he finally feels comfortable enough to let go of everything he’s been carrying. He can tip his head back and enjoy the sensation of Atsushi thrusting into him, powerful as a steam engine. His legs wrap around the hips pounding into him. Fingers tangle in the silver-shock of his hair. Atsushi bites. Right at the junction of his neck and collar and it’s a welcome bloom of pain. He knows what Akutagawa likes, to be able to ride the line of pleasure-pain. Rough sex, a loss of control that he would have never thought himself capable of. Tears bloom in the corner of his eyes, making him see the world through water lenses. HIs head swims.

A hand grips his hips and Atsushi bends him, changing the angle. The new position allows him to get deeper. Aktuagawa sees stars. Yet as if it isn’t enough, as if he wants to crawl inside, Atsushi flips him over. Akutagawa only has a second to realize he’s now on his belly before a paw - and yes, it is a paw - hooks around his waist and raises him until he’s presenting. Only then does Atsushi mount him again, fucking into his dripping cunt. He’s jerked back by his hair. Every nerve ending fizzles, from his spine down to his groin. His throat is bared. He snarls.

The reason for the adjustment is quickly uncovered as Atsushi uses his now free hand to reach around and rub at his clit. With a groan, Akutagawa’s arms give out and he falls face first onto the pillows. His cunt clenches, pulling Atsushi in. Desire builds in him, up, and up, and up until he can’t think of anything but how good he feels. There’s just his body, titillated and frenzied, and Atsushi on top of him, taking everything Aktuagawa wants to give.

“Atsushi…” he moans, close, so close.

Atsushi just laughs. He hits deep, filling him up and forcing the tears in the corner of his eyes to spill. As if in response, Atsushi drops, no longer kneeling behind him, but pulling out and resting on top. His cunt aches, lonely and unfulfilled.

“What the fuck, weretiger,” he snarls, aware of how desperate he sounds, but still needing to chide the weretiger anyways.

With a hum, Atsushi sticks his face in his and licks. He pulls back, leaving his saliva dripping down Akutagawa’s chin and taking away his tears. Gold eyes glint in the dim light as his tongue flits in and out of his mouth, clearly enjoying the taste. His eyes search over Akutagawa’s face, then his entire visage shifts into a grin as he sees both that Akutagawa is alright, and that he wants to continue.

Stupid.

He’d stopped to check on Akutagawa. Knowing Akutagawa likes it rough, likes the hair pulling, and the fast pounding, and the manhandling, he’d still stopped his animalistic pursuit in favor of making sure Akutagawa is okay.

Cute.

Sweet.

All of which are traits he does not want in his partner. Not now. Not when his cunt is empty and he’s dripping and his body is pulsing and throbbing. So he reaches out, grabs Atsushi by the neck, flips him onto his back, and climbs on top.

Too annoyed and too pent-up to think straight, he grabs Atsushi’s cock, and slides it back inside his cunt again. Atsushi, ready to learn from his previous error, starts fucking him again. Though Akutagawa is on top, he is not in control as the weretiger holds him in place and resumes his previous rapid pace.

Desperate for some type of control, or at least to give as good as he gets, he drapes himself over Atsushi’s chest. For a fleeting moment, the man’s expression softens. Smiling open mouth, relaxed expression.

Then he recognizes the hunger in Akutagawa’s eyes.

His head tips back and those gleaming gold eyes look away. As if looking at Akutagawa as he feeds is a step too far.

Akutagawa bites.

His fangs pierce Atsushi’s neck. It’s deep, unlike the play-bites the weretiger had graced him with earlier. No, this is a real and proper vampire bite. How many times has he done this? Once when he was under Bram’s thralls. A hundred times since then, since Atsushi had offered himself as a blood bath and Akutagawa, starving and desperate, had taken him up on the offer.

Now he bites because it makes the weretiger harder, as if he were being granted more blood instead of offering it up. He bites because it tastes good, the copper of it dancing over his tongue far more eagerly than any wine could. He bites because if Atsushi can fill him up, delve inside him, then it was only fair that he return the favor. His mouth fills with it, then rivulets start to bubble down his chin. He swallows eagerly, then dips his head to drink his fill again. Over and over his tongue laps at the wound, until even his greedy maw cannot take any more.

Through it all, Atsushi fucks him. Akutagawa groans as his attention shifts from his full belly to his cunt. One massive paw holds him, as the other toys with his clit. His head shifts from side to side as he sways, not sure what feels better, the blood on his tongue or the dick inside him.

Akutagawa kisses him. Atsushi bites at his lips, eager to taste his own blood and then his paws squeeze. The pain blooms hot and then the stroking and the biting and the blood and the kisses all reach a crescendo and he screams. He screams and cums and he can feel it, wave after wave as he tightens and pulses around the weretiger’s cock. Atsushi cums too, quietly, whimpering in his ear and just holding him tight and close and near. Akutagawa feels him release inside and he groans and feels his cunt drenching them both as it squeezes Atsushi for as much as he could bear to give.

Trembling hands slide down his shoulders, stroking him through his come down. Still holding Atsushi’s cock inside him, Akutagawa lifts his head.

Blinking and bleary, he takes stock of the room. Blood and cum and his juices stain the sheets. Atsushi lies under him, only just now healing the wound in his shoulder. The gold in his eyes has diminished somewhat, and the early morning sun catches bits of amethyst in his eyes. Pretty eyes. Pretty eyes that are focused on him as Atsushi reaches up and brushes his hair behind his ears. His fingers catch on the tips. Sweat beads on his brow. Akutagawa hums and leans over to press a kiss there.

“Good morning,” Atsushi says in that familiar rumble of his.

“Good morning,” Akutagawa says back. He still sits on Atsushi as if riding a horse. He still holds his softening dick inside him. “When I said whenever, that wasn’t quite what I had in mind.”

A look of panic crosses Atsushi’s face. “I thought you want - “

“Silence,” Akutagawa says. He grins down at his captive prey. “Trust that if I did not enjoy your attentions, you would not be attached to your cock right now.” To illustrate his point he tightens his muscles, causing his cunt to clench down. In response, he feels Atsushi twitch inside him.

He raises an eyebrow.

“It’s hot when you’re mean…” Atsushi mumbles in defense.

“I can be meaner,” he purrs.

“I believe it,” Atsushi snips. Then his mouth catches up to what Akutagawa means. “Another round?” he asks in disbelief.

Akutagawa laughs, kisses him, and starts to move, determined to ride him until one of them breaks