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flametrashira · 6 months

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Burning for You

Pairing: Kyojuro x f!reader

Summary: The demon you and the flame hashira slay together releases its blood demon art upon death. Inhaling the red smoke makes both you and Kyojuro insatiable for each other, but neither of you are willing to risk your friendship to satisfy your burning desires. Not without a fight, anyway.

Content guidance: NSFW. Kind of sex pollen trope but non-lethal and both reader and Kyojuro are in full control of themselves, just really REALLY horny for each other. Masturbation. Frantic, noisy, sloppy, desperate sex. Oral sex (reader receiving) Approx 4.8k words

Several emotions blossomed in Kyojuro’s chest as you cut through the demon's neck, ending the battle. Relief that the fight was over and you were unscathed. Pride that you, his dear friend, had been the one to land the killing blow. Envy that your footing had seemed so effortlessly perfect during the final strike. And concern at the strange red cloud forming around you both as the demon withered to ash.

“Don’t breathe it in,” he said, but it was too late. He could taste the strange flavor at the back of his mouth– slightly spicy, almost like ginger.

Your nose scrunched as you grimaced, clearly tasting it too. “Is this its blood demon art?”

“Possibly. It's not unheard of for a demon to unleash a last-ditch attack upon death.” He covered his mouth and nose with the edge of his flaming haori to minimize the amount he inhaled. “Come, we shouldn't hang about.”

The flame hashira walked at your side as you headed out of the grove and back toward your camp where a small group of lower-ranked slayers and kakushi waited. The heat at the back of his throat lingered. With every step it grew a little more intense, spreading to the back of his neck, then up to his cheeks and down to his chest. Eventually, even his total concentration breathing constant failed him as he struggled to fill his lungs. A glance over at you told him you fared no better. Your cheeks were flushed, your skin shimmering with sweat.

“Stop,” he said, his concern evident in his tone. “Let me take a look at you.”

You did as he asked as he cupped your face between his hands, your cheeks burning against the tough skin of his palms. Your pupils were dilated as you gazed back at him, your breaths shallow and unsatisfying. It was clear you had both been poisoned somehow.

“Kyojuro…” You didn’t just speak his name, you moaned it, snapping him from his thoughts.

His lips were an inch from yours, the warmth of your breath gently wafting against his skin, and your bodies were tightly pressed together.

Oh.

“Oh!” He darted back, horrified at his actions. What on earth was he thinking? A deep, unfamiliar ache gathered in the pit of his belly. “My friend! Please forgive me. I– Goodness, I–I don’t know what happened. I’m so sorry!”

“No, no… there’s nothing to forgive. I think I moved in toward you too.” You swept your arm across your glistening brow and shook your head. “Kyojuro… I think the demon’s blood demon art may have been a… uh… an aphrodisiac.”

His eyes widened. You were right, there was no doubt about it. Though he didn’t have much– any experience with intimacy, he knew what it felt like when he was aroused. And this was like that tenfold. His cock twitched needily as your eyes met his. He wanted you. He wanted you so badly, every inch of his body ached with desire.

The knowledge that you were feeling it too was almost enough to bring him off by itself.

“We just need to ride it out–ah! I mean endure it,” he said, his voice growing louder as panic set in. “I’m sure it’s only a temporary effect.”

"Why would a demon even have that power?"

"I imagine it's pretty useful for luring people to the de..." His words trailed off. He tried not to notice the way your breasts heaved as you tried to draw breath, or the way the buttons of your corps uniform strained to contain them. His lips parted around a gasp as a trickle of pre-cum dribbled along the underside of his erection and his cheeks grew hotter still. If he didn’t fuck you right this instant he was going to go mad.

But he wouldn’t. No, your friendship meant far too much to him, and with you also coerced by the poison like this he wouldn’t feel right about it. It was his duty to protect you, and that included from himself and his urges.

“We should head back to camp and try to sleep it off,” he said, trying to keep his voice level. “I’m sure we’ll be back to ourselves in the morning.”

“Yeah, I’m sure.” You pursed your lips and pushed out a breath, causing his dick to throb.

Gods, this was going to be hell.

There was no sleep to be had.

Even though you were on opposite sides of the campfire, he couldn’t stop imagining the weight of you on top of him, riding his cock until you both saw sparks. You always slept with your breasts unbound beneath your shirt. Even before the poison, and even though he'd always tried not to notice, they always looked so soft. Without even looking over at you he could imagine their shape.

Gods, the thought that you were suffering just as he was made his cock weep; knowing that your pussy was dripping wet, that your fingers might have been stroking your slippery, swollen clit at that very moment as you thought of him…

Kyojuro lay on his back, unable to keep his fingers from exploring the trail of wiry honey-toned curls which lead to his cock. Perhaps that was all he needed– to fuck his palm and quell his raging arousal.

But it wasn’t right. Not with the other slayers, the kakushi, and especially you so close by. Still, he had to do something.

He got up and made his way out of the camp and toward the woods, muttering something to the kakushi on guard about wanting to patrol the area.

The kakushi’s eyes widened above their face covering. “Alone? Lord Rengoku, would you like me to wake the others and have them accompany you?”

“No.” Kyojuro shook his head and continued walking, his hand curled into a fist at his side as he fought the urge to begin stroking himself there and then. “I won’t be long.”

Kyojuro stood facing the thick trunk of a tree, bracing his weight on his forearm while he fucked his hand for the third time that night.

He buried his face against the crook of his elbow, groaning as he set a frantic pace. The sheer amount of fluid drooling from his tip lubricated his fist as he pumped it back and forth. His balls were heavy and desperate for release, his breaths shuttering. He moaned your name into the night; legs trembling, abdominal muscles quivering. His blond and red hair was limp with sweat as he sought an end to the torment.

“Come on,” he hissed through his clenched teeth. There had to be an end to it. He simply couldn’t cum forever. And yet, as his climax tore through him and his legs buckled beneath him, sending him collapsing onto one knee, he found he could not stop tugging his cock.

“Oh– oh … gods…” he groaned, squeezing his eyes shut as he pulled back his foreskin and circled the slippery head with his calloused thumb. He still needed more but he couldn’t go on. There would be nothing left of him if he gave into the demands of his arousal. Three orgasms would have to do until the blood demon art wore off.

Tears of frustration pooled in his amber and crimson eyes as he tucked his throbbing erection back into his pants, positioning his waistband over the head of it so he could at least keep it concealed from the kakushi upon his return to camp. He was about half way back when he felt your presence.

It began as a shiver throughout his body, followed by a deeper ache than he’d ever known. Despite his difficulty hearing, your voice still carried to him, breathless and desperate as you sighed his name.

He knew what you were doing; he knew it was obscene of him to look, and yet he couldn’t stop himself from imagining the sight of you, lay back on the forest floor, fucking yourself with your fingers with your legs spread wide.

“Kyo…juro…” you gasped.

Oh it was wrong. It was so very wrong. He had seconds to turn around and yank down his trousers, freeing his cock before it spurted onto the forest floor completely untouched. He stifled his groans against his palm, panting helplessly as his body thrummed with pleasure.

Shame scalded his cheeks. He’d always prided himself on being respectable and trustworthy, and yet there he was, cumming at the mere sound of you fucking yourself to thoughts of him. And even as his cock stopped leaking, he still felt that desperate tug of arousal, as if only your cunt could satisfy his needs.

Gods, the thought of sinking into you… warm and wet—

No. He wouldn’t do it. He wouldn’t even think about it anymore. You were his friend.

Shoving his cock back into his trousers he set his composure and took control of his breathing once more. He wasn't some animal unable to control his instincts, he was a hashira, and he’d trained for years to have total command of his body.

The night filled with sounds of your pleasure as you reached your frantic peak, and his cock throbbed with that never-ending desire for you.

He had to get away from you before he drove himself mad. But he couldn’t. That was the problem. You were his companion, traveling at his side for at least the next few days.

He could only hope that the blood demon art wore off soon.

The next day was much the same. With the demon dead you traveled alongside Kyojuro and the rest of your party back toward HQ, a journey which would take almost a week to complete. The flame hashira was unusually quiet, his cheeks flushed as pink as yours and his normally wide and lively eyes heavy-lidded with fatigue and arousal.

You weren’t any better off. Ever since you had killed the demon your pussy had been drenched. Just the sight of Kyojuro was enough to make it throb and clench helplessly around nothing, desperate for his cock.

And it was everything about Kyojuro: the size and strength of his hands, the sound of his voice, the curve of his hips, the fullness of his chest, and the sturdiness of his thighs. And his nose. Gods, the obscene thoughts you’d had about his nose; you could practically feel him nuzzling your pussy, breathing in your scent, nudging your clit teasingly.

Fingering yourself had done nothing. Deep down you knew it had to be Kyojuro. None of the others traveling with you did anything at all for you–it was as though the stuff you had both breathed in was calling to itself, drawing you together and driving you out of your senses.

By nightfall you were exhausted down to the marrow and your need still hadn’t dwindled. You understood why but it didn’t hurt any less that Kyojuro would no longer make eye-contact with you.

Another day passed in exactly the same fashion. Then another. Even when you managed to fall asleep you dreamed of fucking him, his breath hot and heavy against you as he thrust his cock deep inside. And you always woke up with your fingers strumming your clit, your eyes drawn to the switching shape of Kyojuro on the other side of the camp, his soft moans making your toes curl as you desperately got yourself off.

The next night you found a house with a wisteria crest on its doors; a safe-house for members of the demon slayer corps where you could rest in a warm bed and clean yourselves off. Relief filled you as you slipped into the onsen and washed away the grime of your travels. But even the caress of the water was more than you could bear. Slipping into the dry, clean yukata afterward was torture.

And cruelest of all, was running straight into Kyojuro in the hallway, the collision of your bodies sending showers of sparks rushing through your veins. He was dressed similarly in a pale blue yukata, droplets of water beading down the exposed V of his chest as he made his way back to his room after bathing.

“Excuse me,” he muttered, his cheeks glowing scarlet as he tried to dart around you.

“Kyojuro!” You blurted his name, rendering him still. His distance the past few days was far more painful than the constant ache between your thighs. “This doesn’t change anything between us,” you said as you stood back-to-back with him. “You’re still my dear friend. We’ll get through this.”

You almost mistook his sharp exhale as a sob. “Even speaking to you is agony… your voice, it makes me feel–”

“Yours does to me too. I’ve tried–well, I’ve tried everything I can think of to get rid of it.”

“As have I.” He turned his head slightly toward you but thought better of it and looked away again. “Nothing helps. It’s as if…” He paused and his shoulders slumped. “No, forget it. We’ll get through this. In a couple of days we’ll reach the Butterfly Mansion and Lady Kocho can run tests to find out how to reverse the blood demon art. And I’m certain it will fade eventually.”

“And what if it doesn’t?”

He did turn then, his eyes momentarily wide with panic. “Then… then we’ll have to stop traveling together. We’ll have to be separated. Perhaps we can write to each other and still remain friends that way. Or… or perhaps–”

“No, no I don't want that!” you said, desperation evident in your voice. “Kyojuro, I don’t want to lose you.”

His expression softened, and though he was exhausted, frustrated, and afraid, he smiled. “I don’t want to lose you either. You’re important to me.”

“Then…” Your heart thrummed as your courage wavered. “Would it be so terrible if we… gave in?”

His lips parted around a heavy inhale. “I swore to myself I wouldn’t take advantage of you.”

Gods, you couldn’t stand it anymore. You were close to tears as your aching core fluttered at the sight of him. “Kyojuro… please. Please fuck me.”

A soft groan escaped him at your words. “You’re sure?”

“Yes. I’ll go mad if you don’t.”

Conflict raged behind his eyes as he pressed his lips together, his chest heaving as his breaths grew heavier. He swallowed hard. “Forgive me.”

A moment later his lips were on yours, claiming you with a kiss so ferocious it emptied your lungs and tilted the world around you. There was nothing beyond Kyojuro; his lips, his tongue, and teeth as he pressed you against his body with an iron-grip, and hoisted you up to wrap your legs around him.

You were vaguely aware that he was carrying you as you tilted your hips against his, letting the friction of his yukata press against your pussy. You heard the sigh of a shoji door sliding open then closed again, and felt the cool press of a soft futon against your back. Running your fingers across his scalp, you felt him shiver against you.

A moment later he was kissing his way down your chest, grazing your skin with his teeth as a growl emerged from deep within him.

He pulled apart your yukata, groaning as he cupped your breasts, kneading them with his broad, rough hands as his kisses trailed lower. “Tell me if it doesn’t feel good,” he gasped against your navel, inching his way down, until the wet heat of his mouth surrounded your clit.

“Fffuck,” you hissed, hips lifting off the futon as he devoured you, his tongue slippery and hot against your swollen bud.

Kyojuro looked so pretty as he licked your pussy, his honeyed eyes half-lidded, drunk on the taste of you. As if he'd heard your secret desires, he nuzzled the tip of his nose against you, teasing your pussy and inhaling deeply as a groan rumbled from his chest.

“Gods, don’t stop,” you gasped. “Please…”

Another growl escaped him as he feasted on you again, his hunger and desperation to please you far outweighing his inexperience. He ate your pussy like a man starved, hooking his arms around your thighs and dragging you toward him. He damn near lifted your ass completely from the futon as he licked and licked, sending bolts of ecstasy shooting through your body. You cried out, helpless, lost in pleasure. In that moment you were his entirely.

But it wasn’t enough for him. Pushing his hands against the backs of your thighs, Kyojuro pinned your legs up with your knees against your stomach, exposing you to him as his tongue flickered against your clit like a growing flame. He moaned against your pussy as he fucked you with his tongue.

All you could do was lie there and take it, fingers buried in his hair, your core tensing, throbbing, tightening and still so desperate for his cock. Gods, if you didn’t cum soon you’d lose your mind. You reached down, fingertips brushing the slick skin above your clit, pressing down and drawing back your clitoral hood so he could kiss that throbbing bud deeper, harder and faster. He damn near pounced upon it, sucking and licking as though it was the most delectable thing in the world.

“Kyo…juro~”

You pulled in a breath and held it as your muscles clenched, a coil deep within you winding tighter and tighter until your orgasm rocked though you. You came hard, head thrown back against the futon, lips parted around a silent cry, thighs trembling as he fervently lapped at your essence.

“You taste… incredible…” he panted against your cunt, bestowing an open-mouthed kiss on your entrance before repositioning himself onto his knees to shrug off his yukata entirely. Even with the fever of arousal coursing through him he paused to check in with you. “Do you still want it, or did that satisfy your urges?”

Your body pulsed with the aftershocks of your orgasm, but your relief soon faded, leaving you desperate for him once more. The sight of him naked only provoked the primal need. He was strong and broad, his body blessed with both strength and softness, carved by a life of fighting hard and eating heartily. There was just so much of him. All of him. His cock was engorged and veiny, his balls heavy and full.

“Fuck me,” you gasped, wrapping your legs around his waist and pulling him down toward you.

He pinned you to the futon with his hips, groaning as his cock teased the entrance of your pussy. “I won’t cum inside. I’ll… Gods, you’re so wet.” You kissed him as he pressed the tip of his cock into you, teeth grazing the tender plump pillow of his lower lip and making him cry out. “Ohh fuck.”

The relief surging through you almost brought tears to your eyes as he slid into you, deeper and deeper, filling you, stretching the walls of your cunt around his cock. Nothing he could say could express his pleasure more than the rapture in his eyes as he bottomed out inside you.

“How—” He bowed his head, as he fought for composure. “How can anything feel… so… good?”

“Because we need to be together.”

He nodded, “I don’t know if I can hold back.”

“Then don’t. I can take it.”

His control slipped in an instant. Kyojuro fucked you hard and fast, hips slapping against yours. He grunted and growled, the gentleman in him giving way to the feral beast the blood demon art had created—or released. Every thrust sent throbbing pleasure shooting through your body as he slammed into you, releasing days of pent up tension.

“Oh gods, you feel… like… nghh…heaven…” he gasped, his practically glowing.

The rhythm of his hips stuttered as he fucked you harder and faster, every untamed thrust punctuated by a sharp grunt. Calloused fingers strummed your clit as he lifted your leg onto his shoulder, allowing him deeper. Your fingernails dug into his forearm as he drove you mercilessly to your next orgasm, your pussy squeezing and milking his cock. Your body was alight, pleasure firing through every nerve as he continued to pound your quivering pussy, the lewd wet slaps of flesh on flesh accompanying his wanton, feral moans.

“Oh gods, oh godsohgods, I’m… there…” His back arched, hips jutting toward you as he pulled out and spurted cum across your belly. “Forgive me, I’m sorry,” he groaned, as his body shook and flushed pink with pleasure. “You felt so good. So good.”

He collapsed onto you, the tufts of his hair tickling your chest as he fought for his breath. And you held him, stroking your hand down his back, relieved by the lull in your desire, your body, mind, and heart satisfied for the first time in days.

“Are you alright?” you asked.

“I am.” He opened his eyes and tilted his head to face you. “I'm sorry it was quick, I haven't ever… I feel… I’m mostly satisfied. Are you okay?”

“Yeah.” You chuckled and kissed the top of his head. His body was hot and firm against yours, his weight comforting as he pressed you into the futon. “It’s mostly eased for me too.”

The pair of you fell silent, the only sounds in the room were your breaths and the distant chatter of the kakushi and slayers on the other side of the house.

"We're still friends, yes?" he murmured.

"Of course."

"Good."

Running your fingers up and down Kyojuro's back, you felt the muscles twitch beneath your touch as his breath shivered against your skin. He groaned softly and a tingle spread between your thighs.

After a while he sighed. "There's still a lingering need."

"Yeah. I feel it too."

He raised his head to look at you, the tufts of his fiery hair disheveled and wild. “Perhaps… if we do it again it’ll go away fully.”

Your stomach flipped in anticipation as you nodded. Gods, there was no denying it, you still wanted him; the thought of fucking him again was more tempting than anything you’d known.

And you couldn't hold back.

Neither could he.

Your lips collided with his once more as you pulled each other into another claiming kiss, though this time slower, deeper, his tongue exploring the shape of your mouth as his hands caressed the curves of your body. He groaned as you sucked his bottom lip and followed your lead, letting your roll him onto his back as you straddled his hips to ride him, still kissing him.

He gasped as you took control, wrapping your fist around his cock, easing him into you inch by inch even though you were more than prepared for him. The way his lips parted around a silent cry, the way his brow stitched together in concentration and pleasure as he fought the urge to thrust eagerly into you, were just too delicious to rush.

He stared, fascinated as his cock disappeared into you, his fingers gingerly touching the seam where you joined.

There were just so many beautiful things about Kyojuro; the way his abdominal muscles twitched when he was turned on, the sound of his moans even when he tried to be quiet, the heat of his gaze as he watched you through half-closed, vivid golden eyes, the way his fiery hair spread across the pillow like the sun's rays.

Even if it was the demon's spell, you wondered how you had never seen it all before, how after years fighting by his side, only then did you see him in a new light.

Kyojuro was beautiful, and fucking him was beautiful too.

This time the pace was slower, more languid, the pair of you savoring the overwhelming sensation of togetherness. His fingers laced with yours as you undulated your hips.

“Perfect,” he sighed against your lips. “You feel incredible.”

Without that all-consuming desperation, you took the time to explore his body and his pleasure, trailing kisses down his neck. Your stomach fluttered as he tilted back his head to give you more access. His groans filled the room with every kiss and caress; oh, but when your lips reached his chest, when you lapped at the puckered bud of his nipple, he sucked in a breath, the flush on his cheeks rising.

"Do that again," he gasped. "Please."

You sucked his nipples until they were stiff and dark, spurred on by his whimpers and the hand threading though your hair. His grip on your hand tightened as you teased his chest until he couldn't bear it anymore, his restraint faltered and he had to thrust up into you.

You rolled over together until he was back on top, pinning you down and pounding into you once more as you squeezed your thighs around his hips.

"S-so warm," he groaned, "tight…"

He lay his body flush against yours; the intimacy of his warm skin against yours far more potent than anything you had known before.

In this position his body rubbed against yours just right, your clit stimulated by the friction of his pubic hair and the delicious press of his hips to yours. Your third orgasm was more intense than the first, your cunt throbbing around his cock as pleasure tore through you with its claws drawn, ravaging every part of you.

He groaned. "I can feel it. You're squeezing my… oh…'M gonna cu– I'm cl-oh-hose!"

He pulled out, painting your inner thighs with his seed; shaking, groaning, biting his lip, before he collapsed against you, panting heavily and laughing in relief.

Afterward you lay together, tracing the outline of his bicep with your fingertips as he sighed against your hair.

"How do you feel now?" He asked. "Has it stopped for you?"

You gazed into his eyes and still felt that pull. "No. Not completely."

"It hasn't for me either," he said, pulling you close. "I suppose we'll have to keep at it."

Three days later, Lady Kocho smiled as she studied the sample of Kyojuro’s blood beneath her microscope. “I see.”

“It has been a hard–difficult thing to deal with as I’m sure you can appreciate,” Kyojuro said, standing with his arms folded across his chest. “And though the initial–uh– fever seems to be over, the desire is still lingering. I suspect the blood demon art is still running rampant through our systems.”

Kocho chuckled. “My my…”

You simply waited for her diagnosis, perched on the bed with your heartbeat thrumming as you struggled to keep your eyes off the flame hashira. He was right. That initial, feral rut had taken the painful edge off your desire, but your hunger for each other was still simmering beneath the surface. Since that first night, not seventy-two hours ago, you’d found yourself sneaking off with Kyojuro no less than seventeen times to satisfy your needs. Thank goodness for his hashira stamina.

Even as he simply stood there you desired him. Innocent things like the comforting arc of his smile, the warmth of his eyes, the sight of his muscle-corded forearm as he'd rolled up his sleeve to allow the insect hashira to draw his blood, all turned you on.

Swapping out the slides, Lady Kocho put her fingertips to her lips, concealing a quiet laugh. “Oh, I’m so sorry to you both.”

“Why?” Kyojuro asked, his eyes wide and sincere. “Is it permanent?”

“There are no traces whatsoever of a blood demon art in either samples. I’m afraid it likely wore off the first time you…released the tension.” She smiled and sat back, resting her hands on her lap. “It seems likely you’re now suffering from simple attraction to each other, that’s all.”

Your eyes darted between the two hashira as your mind raced. You weren't under a spell at all… you were simply… into Kyojuro.

"Oh… really?" Kyojuro frowned, his gaze distant. "No traces whatsoever?"

"None." Kocho stood from her desk and bade the two of you goodbye, leaving you alone in the room with Kyojuro.

"Well," he said at last. "I feel a little foolish."

"No, no, you shouldn't," you said, offering him a comforting smile even if you felt the same way. "I suppose we're just… more than friends now?"

He hummed softly, thinking about it for a moment before he burst into laughter. "Yes, I suppose we are." When his laughter died down he smiled and approached the bed. "It's honestly a relief, knowing now that I'm simply bewitched by you."

Just like him, your pupils were dilated, your breaths shallow and unsatisfying. Even without the blood demon art, it was quite the spell you were both under.

"I know what you mean," you said as you pulled him down onto you to take full advantage of the comfortable infirmary bed.

Thank you so much for reading! If you liked this story, please don't forget to reblog- it really helps writers when you share their work.

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