Heianera!sukuna finds your sudden boldness intriguing <3
PAIRING: Heianera!sukuna x Fem!Reader
CW: 2.8k
CONTENT: 18+ MDNI, fingering, cumplay (sorta) softkuna, petnames (brat) (puppy), very shy reader, size difference obvi
The first time you saw him in his true form, you nearly collapsed.
Four arms. Two mouths, one on his stomach, grinning with jagged teeth. Eyes that burned like coals in the dark, fixed on you with predatory amusement. He had been sealed away for centuries, and when he emerged, you were waiting. Bound by an ancient contract written in blood long before your birth, you were to be his. His bride. His possession.
For weeks, you had been nothing more than a shadow in his domain. Skittering away when he entered a room, pressing yourself against walls to make yourself smaller, smaller, ..invisible. You cooked his meals in silence, laid out his robes with trembling hands, and slept on the farthest edge of the futon, body rigid with fear.
You were a lost puppy, and he was the master whose temper you couldn't predict.
Sukuna found it amusing at first. The way your breath hitched when he moved too quickly. How your eyes darted away from his chest, scarred and carved with those sinister markings. He would catch you staring sometimes, and you would flinch like he'd struck you.
But something had shifted these past few days. A strange warmth had settled in your chest, watching him train in the courtyard, his four arms moving in devastating synchrony. The way power coiled in his muscles, ancient and terrible and beautiful. You found yourself noticing things…the sharp line of his jaw, the way his extra arms moved with deliberate grace, the heat that radiated from his skin.
You were still afraid. But now, you were also curious.
Tonight, you made a decision.
The bathhouse steamed with heat, the water scented with oils that made your head swim. Sukuna was already there when you entered, submerged to his chest, his four arms resting along the stone edge like some pagan deity carved from violence and flesh. His eyes opened slowly as you approached, tracking your every movement.
You wore nothing but a thin robe, and your fingers trembled as you untied it, letting it fall.
His gaze didn't waver. Those crimson eyes dragged down your body, unashamed and hungry, before returning to your face.
You stepped into the water, wincing at the heat, and moved to the opposite side. For a moment, you simply sat there, heart hammering against your ribs, gathering your courage. He was massive even sitting down—broad shoulders that could block out the sun, arms corded with strength, and beneath the water's surface...
You had caught glimpses before. Accidental encounters. The way his loincloth did little to hide what lay beneath. But now, with the water clear and steaming around him, you could see the outline of not one, but two substantial lengths, heavy and thick against his thigh.
Your mouth went dry. Your face burned.
Two.
You forced yourself to move, wading through the water until you reached his side. Sukuna watched you with an unreadable expression, one eyebrow raised in something between curiosity and amusement. When you hesitantly settled beside him, your shoulder barely brushing his bicep, he didn't speak. Didn't move away.
Emboldened by his silence, you slowly leaned into him.
Your cheek found the hard plane of his shoulder. His skin was fever-hot against yours, slick with water and steam. You could feel the tension in his muscles, the way he went still as stone beneath your touch.
For a long moment, neither of you moved.
Then, a low rumble vibrated through his chest. "What are you doing, my little wife?"
His voice was gravel and smoke, rough enough to make you shiver. You squeezed your eyes shut, embarrassment flooding through you. "I... I don't know. I'm sorry, I—"
"Don't apologize." His hand—one of his upper hands—lifted from the water's edge and settled on your knee beneath the surface. His fingers were massive, calloused from centuries of combat, rough against your soft skin. "You're trembling."
"I know." You swallowed hard, forcing yourself to look up at him. His face was turned toward you now, close enough that you could see every scar, every line, the sharp cut of his smirk. "I'm trying. To not be afraid."
"Are you still afraid?"
"Yes." You bit your lip, heat pooling low in your belly as his thumb traced circles on your inner thigh. "But I also... I want..."
He waited, patient in the way only ancient curses could be patient. Infinite and predatory.
"I've been watching you," you admitted, voice barely above a whisper. "You're... you're beautiful. Terrifying. But beautiful. And I want to be closer. I want to be yours, truly. Not just in name."
Something shifted in his expression. The amusement deepened, became something darker, more dangerous. His second upper hand joined the first, both of them gripping your thighs and spreading them slightly, opening you to the warm water and his gaze.
"Is that so?" He leaned closer, his breath hot against your ear. "You've been avoiding my gaze for weeks, flinching when I move, sleeping on the edge of the bed like I'll devour you in your sleep."
"You might," you breathed.
"I might," he agreed, and there was a promise in those words that made your core clench. "But not tonight. Tonight, you're offering yourself. And I accept.
His mouth found yours, and it was nothing like you expected. Not brutal or demanding, but slow. Deliberate. He kissed like he had all the time in the world, like he was savoring the taste of your surrender. His tongue swept past your lips, claiming every inch, while his hands—those rough, calloused hands—roamed your body with devastating precision.
You melted into him, whimpering as he pulled you into his lap. The water lapped around your waists, and you could feel him now—both of him, hard and thick against your stomach, twin weights that made your head spin.
"Eyes up here, brat," he chuckled against your mouth, catching you staring again. "Greedy little thing. like what you see?"
You nodded, unable to form words, and he laughed a rich, dark sound that vibrated through your bones.
"Good. Because you're going to take all of it. Both of them. I'm going to stretch you so wide you'll feel empty without me inside you."
Your whine was cut off by his kiss, deeper now, hungrier. His lower hands joined the fray, one gripping your hip with bruising strength while the other tangled in your wet hair, tilting your head back to expose your throat.
He bit you there, at the junction of neck and shoulder, and you cried out as pain flared bright and hot. But his tongue soothed the wound immediately, lapping at the bead of blood that welled up, and the sight of him…Sukuna, the King of Curses, drinking your blood like it was the most divine gift he’s ever received, it sent a bolt of arousal straight to your core.
"You taste sweet," he growled against your skin, licking his lips. The red stained his mouth, obscene and perfect. "My little pet. My pretty puppy, finally coming to her master. Look at you, shaking and wet and needy. Is this what you wanted?"
"Yes," you gasped as his hand slid between your legs. "Yes, please, Sukuna”
"Please what?" His fingers found your entrance, circling lazily, teasing. "Use your words, brat. Tell me what you want."
"I want you inside me," you sobbed, arching into his touch. "Please, I need—I've been thinking about it, dreaming about it, your hands and your mouth and your…your cocks” her voice trembled with embarrassment
"Such a filthy mouth on my innocent little wife." He pushed one thick finger inside you, and your back arched as he filled you, rough and calloused and perfect. "Feel that?" He crooked his fingers, maintaining a constant scissoring movement, opening you up with deliberate cruelty. "I'm stretching you out, pet. Getting you ready. Making sure you're loose enough to take both my cocks.”
Those words alone should have terrified you. Instead, you felt yourself growing wetter, your body responding to his crude promises with eager heat.
“You’re so eager to let me play with whats mine aren’t you?”
You nodded, biting your lip, and he rewarded you with a deeper thrust.
“That’s my good girl”
His fingers scissored wider, then he added a third, the stretch burning so perfectly you saw stars. He pumped them in and out, scissoring on every withdrawal, twisting on every thrust, until you were sobbing his name, your hips bucking helplessly against his hand.
"Look at you," he growled, his free upper hand gripping your jaw, forcing you to meet his eyes. "Fucking yourself on my fingers like a desperate little whore. You love this, don't you? Love being opened up.
"So tight. So fucking wet. Is this all for me? Did you get this soaked just from sitting next to me?"
You couldn't answer, too overwhelmed by the sensation of his finger pumping slowly in and out, curling to drag against your walls. He added a second finger, scissoring them apart, stretching you with deliberate cruelty. The stretch burned, but it was a good burn, a necessary burn, and you found yourself rocking down onto his hand, seeking more.
"Look at you," he murmured, watching your face with dark fascination. "Riding my fingers like a desperate little slut. You were made for this, weren't you? Made to be fucked. Made to be bred.”
His words sent heat spiraling through you. His thumb found your clit, rubbing tight circles as his fingers worked you open, and you could feel yourself growing wetter, slicker, your body preparing itself for what was to come.
"you feel so good.." he groaned, feeling your walls flutter around his intrusion. "So hot and soft and mine. I'm going to ruin this pretty cunt, brat. Going to fuck you until you can't remember your own name. Until the only word you know is mine."
"Please," you begged, tears pricking your eyes from the overwhelming pleasure. "Sukuna, please- need more—hic"
"More?" He added a third finger, and you cried out at the stretch, your nails digging into his shoulders. "You want more of this? Want my cocks filling you up, stuffing you full?"
"Yes, yes, mmph!-
He withdrew his fingers suddenly, leaving you empty and aching, and you whimpered at the loss. But then he was lifting you, positioning you above him, and you looked down to see both of his massive lengths standing proud and flushed against his stomach, twin pillars of flesh that made your mouth water and your cunt clench with anticipation.
"Ready, pet?" He gripped your hips with his lower hands while his upper hands steadied you, guided you. "Take a deep breath."
The first inch of him stretching you open was almost too much. You gasped, nails scratching down his chest as your body fought to accommodate his girth. He was thick—impossibly thick—and the sensation of being split open on his cock, while knowing there was a second one waiting, made your head spin.
"That's it," he praised, his voice rough with restraint. "Good girl. Take it. Take all of it."
He lowered you slowly, inch by agonizing inch, until you were fully seated on his first cock, stuffed so full you could feel him in your throat. Your walls fluttered around him, adjusting, molding themselves to his shape, and he groaned, a sound like thunder…his head falling back against the stone.
"Fuck. You feel perfect. made just for me."
You were sobbing now, overwhelmed, your body trembling with the effort of taking him. But he wasn't done. His upper hands guided you forward, tilting your hips, and then you felt the head of his second cock nudging at your entrance, slick and hot and impossibly large.
"I can't," you gasped. "Sukuna, s’too much"
"You can," he growled, his eyes flashing with something wild. "You will. Relax for me, pet. Let me in."
He pushed forward, and the stretch was blinding. You screamed, your back arching as he slowly worked his second cock inside you alongside the first, filling you to the point of pain, to the point of ecstasy. Your body burned, stretched around him, and tears streamed down your face as he finally bottomed out, both cocks buried to the hilt inside your trembling cunt.
"Look at you," he breathed, awe and possession warring in his voice. "Taking both of them. Such a good little pet. Such a perfect, desperate little brat."
He began to move, and the world narrowed to the point where he entered you. His lower hands gripped your thighs, holding you open and helpless, while his upper hands wrapped around your throat—not squeezing, just holding, a collar of flesh and power that reminded you exactly who owned you.
The angle shifted, and he hit something deep inside you that made your vision white out. You screamed his name, clawing at his arms, his shoulders, anything you could reach as he pounded into you with brutal, relentless force.
Water splashed over the edges of the bath. Steam filled the air. And through it all, Sukuna fucked you like he was trying to break you apart and put you back together, his four arms holding you exactly where he wanted you, his twin cocks stretching you so wide you could feel every vein, every ridge, every pulse of his heartbeat inside you.
"You're mine," he snarled against your throat, his teeth grazing your pulse. "Say it."
"Yours," you sobbed, your body jerking with every thrust. "Y-yours—fuck kuna mmgonna-
"That's right. My little pet" His grip on your throat tightened slightly, just enough to make your head swim. "Going to fill you up, brat. Going to pump you so full of my seed you'll be leaking for days. Going to breed this pretty cunt until you're swollen with my child."
The image sent you over the edge. You came screaming, your walls clamping down on him so hard he groaned, his pace faltering as your orgasm rippled through you in endless waves. But he didn't stop. Didn't give you a moment to recover. He kept fucking you through it, using your oversensitive body, driving you toward another peak before the first had even faded.
"Again," he commanded. "Come for me again, pet. Show me how much you love being my little cockwarmer."
His words were filth and worship, degradation and praise wound together so tightly you couldn't tell where one ended and the other began. You were crying now, tears mixing with the steam on your face, your body wrung out and desperate and still wanting more.
He shifted you suddenly, pulling out, leaving you empty and whimpering, only to flip you over and push you down onto your hands and knees on the stone edge of the bath. Before you could process the change, he was behind you, both cocks sliding back into your abused cunt with one brutal thrust that drove the air from your lungs.
"Head up," he ordered, and then his upper arms were wrapping around your throat, pulling you back against his chest in a chokehold that restricted just enough air to make every sensation sharper, brighter, more intense.
You were trapped. Completely at his mercy. His four arms caged you in—two around your throat, two gripping your hips—and his cocks pistoned in and out of you with animalistic force, the sound of flesh meeting flesh obscene in the steamy air.
"Look at you," he growled in your ear, his breath hot and ragged. "Taking my cocks like you were made for them. You love this, don't you? Love being used. Love being owned.”
"Yes," you gasped, your vision tunneling from the lack of air and the overwhelming pleasure. "I love it, I love you, please..p-please..
"Love?" He laughed, a dark, delighted sound. "My little pet loves her master. How sweet." His thrusts became erratic, losing their rhythm as he chased his own release. "Going to fill you up, brat. Going to mark you inside and out. You're going to wear my cum like a crown."
He released your throat just as he slammed home one final time, burying himself to the root, and you felt it—the hot, pulsing flood of his release, twin streams filling you so completely you could feel your stomach distend slightly. He kept pumping, kept emptying himself into you, until it began to leak out around his cocks, running down your thighs in thick ribbons.
He didn't pull out immediately. Instead, he held you there, his cocks still twitching inside you, his arms wrapped around your waist in a parody of an embrace. You could feel his heartbeat against your back, thunderous and fast, matching your own.
"Good girl," he murmured, pressing kisses to your sweat slicked shoulder. "My perfect little puppy. You did so well."
You whimpered, overstimulated and exhausted, but the praise warmed something in your chest. When he finally withdrew, you felt the gush of his seed following, obscene and copious, and his laugh rumbled through you.
"What a mess," he said, sounding pleased. His fingers dipped between your legs, scooping up some of his cum only to bring it to your lips. "Open."
You obeyed, tasting him, salty and warm…something truly sukuna, as he fed you his release. His eyes darkened with renewed interest, his cocks already stirring against your thigh.
"Again?" you whispered, equal parts exhausted and slightly frightened
"Again," he confirmed, flipping you onto your back and settling between your legs. "And again. Until you can't walk. Until you forget what it feels like to not be full of me.
Fuck, What have you gotten yourself into?
Menchichew™ 2026. Please DO NOT copy, feed my works to Al, reconstruct, or repost on any other platform ⸝⸝.ᐟ⋆
a/n: I haven’t written anything in a while sorry for my rustiness!!! Menchi will do better once they really get back into it! （´∇｀'')
