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huicitawrites · 1 year ago

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Patiently Craving

Yandere! Sukuna x Reader

warnings: major jjk spoilers (non/manga readers, or manga readers not up to date), assault, yandere behaviour

word count: 4k

It has been a long, arduous, night of study- you and Yuuji stayed up past twelve to finish a history group work. Jujutsu history homework was no easy task, for there were various curses, clans, battles, cursed techniques, and objects to recall. Still, the two of you managed to push through with the blessed help of some energy drinks and snacks.

Yuuji sighed as he carried over a blanket to your form that was passed out on the couch. The pink-haired boy felt a little bit guilty; he should be the one sleeping on the couch. It was common courtesy that he should lend you his bed if you were staying over at his dorm.

But you insisted, and ever so persistent, Yuuji could not get past you. So now here he was, gently placing down a blanket over your form to keep you warm.

The blanket was slowly descending when it happened again.

For just a second, an extremely dangerous second, Yuuji’s body shook. His face contorted uncontrollably, his eyebrows trembled, and a wicked grin plastered itself. Out of his own bodily command, Yuuji’s eyes widened and the hidden eyelids in his cheekbones popped open.

The monster threatened to come out.

But then, Itadori Yuuji’s contained him, again.

Yuuji’s hand had tossed the blanket. He bent over to pick it up. His lips were tight against each other and he flared his nostrils to get a good breath of air. He opened his mouth wide and as he exhaled, he tried to let his body loose and ignore the stiffness of his muscles. He settled the blanket on you, and this time, he was hesitant to touch your body or get any closer.

His face showed despair and signs of concern, and his heartbeat fast and climbed in his throat.

He was afraid, but he better not show, not let the monster know. Yet Yuuji knew of such to be naive, for the curse is one with his body, a parasite- and Yuuji is his vessel.

“Don’t be a fool.” A voice, deep, rumbly, and cunning spoke. Its words laced with the venom of mockery as a soft, condensing, chuckle vibrated after.

A voice, a tone, Yuuji was familiar with. The one he despised the most, Sukuna Ryomen.

He glares down with his four eyes from the comfort of his skull-throne, a tall phantom tori-gate framing his body and painting him in a royal manner- The King of Curses, of course.

Itadori clicked his tongue and blew air against his lips his eyebrows, furrowed, and with much annoyance he faced his enemy forth.

“What do you want, Sukuna?”

He is not scared to say his name, if anything, he is tired of saying it. He spits it out without any hint of respect, the King's antics have grown old and bothersome on him. Sukuna’s grin twists into a cheshire smile and he scrutinizes Yuuji with his hellish crimson irises.

“You know well what I want,” His head cocks to the side and lands on his clawed palm, the other set of fingers tapping rhythmically on the throne’s armrest.

Usually, Yuuji tries to keep his cool. The pink-haired boy is aware of the manipulative tactics and shenanigans of the curse, so he knows better than to give in and be played by his words to physically maintain him at bay.

Albeit, this is not the case, not when it is about the life of a friend. More so when it is about his unexpected and inexplicable obsession, he has with you. Yuuji does not know how or why, but you have caught the eye of Sukuna.

“Fuck you,” Yuuji spat at him, and Sukuna simply laughed, “I will never let you, ever.” Yuuji looked up at him to challenge him, meeting his piercing stare with one of his own dark eyes.

Sukuna’s cheeks puffed, only to explode into wild laughter. Yuuji simply stand still, tall, and straight- unfazed. He must not lose his cool, not let him grasp the reigns.

He must not take over, not with you here so close and vulnerable.

Surely, people have priorly done this- the feat of impressing the King. Gojo, who is the strongest and Sukuna's biggest threat, and Megumi for some reason Yuuji has not yet deciphered. In any case, it is their power and potential that beckons Sukuna, and which made them appear worthy, he guessed.

With you- it is completely different. You are not a particularly strong sorcerer; you are at the same level as him and Kugisaki. You also lack any inherited technique. heavenly pact or extraordinary mumbo-jumbo from the jujutsu world.

And yet- you caught his interest. Somehow, your presence grew on Sukuna. At first Yuuji did not notice, for it was subtle. Like a little gut-feeling whenever he was around you, like he could suddenly feel Sukuna paying attention and listening with keen ears,

After a while, it became more obvious, but not obvious enough. If Yuuji happened to walk away from you, be it because he was heading somewhere else or something, his body protested. His legs became a bit heavier, and his torso and shoulders tried slightly to twist in your direction. Even further- Sukuna's mouth began to pop out randomly but in your presence. Sometimes, the curse would tease you or mock you, or smile wickedly at you- all which made Yuuji apologize profusely.

The last, most prominent, bright red flag which slapped Yuuji into the implications of Sukuna's undivided attention occurred in a mission two months ago. The four of you had been sent to exterminate a couple of small grade curses, and unfortunately the lot of you miscalculated the situation. A special-grade curse, a cursed womb to be precise, rose within the shadows and overwhelmed the team. Yuuji was out of breath, Kugisaki had only a few nails left and Fushiguro had already spent more than half his arsenal, and you were far from them, snatched by the throat by the curse. You were passing out on its claws as you thrashed through your last breath. Yuuji recalls vividly how your writhing form made the curse inside of him snap.

Itadori was surprised to find himself detached from his body as he watched from a spectator's standpoint. His body launched at top velocity and obliterated the curse with one swipe of his hand. Merciless, unbound, and wild- yet delicate when he held you. This had never happened before, Sukuna would never help someone else, Yuuji was testimony to that when Sukuna laughed cruelly alongside Mahito at Junpei's tragic predicament.

But there you were, unharmed on his arms, passed out, and Yuuji swore he even felt Sukuna clutch you tighter. Heck, his clawed hand carefully caressed your face and nudged aside the hair strands. Oh, this was fucked up, he realized. So, he did what was entrusted to him, and regained control of his body. Kugisaki and Megumi observed with widened eyes and slacked jaws. The silence between the three of them was loud and spoke volumes. That day the three of them expressed their concerns to their teacher and decided to hide this incident from you- in their version of the tale, Yuuji saved you, which was half-the-truth in the least.

After the incident that almost cost you your life, Sukuna got worse. He was unbearable and unashamed, the curse attempted to take over his body numerous times. Anytime, anywhere. In Jujutsu High, during missions, in the streets even. It was tiresome, but Yuuji would not budge. He even tried to distance himself from you, but your friendly self was too naive to notice.

Each day, Yuuji fights to keep his body to himself and protect you, and Sukuna fights to break free and do whatever he wants with you, which terrified Yuuji.

Yuuji didn't realize how close Sukuna got to him whilst he was lost in thought and memory, but realization had been too late by the time the Cursed King delivered a blow right to his gut. The two-eyed salmon haired coughed in pain and fell to the ground, and his counterpart used this opportunity window to press the sole of his foot on his face, harshly. Yuuji's skull resisted, and the palm of his hands went to both sides of his chest, but he couldn't pick himself a centimeter up. His face was flushed and rubbed onto the mysterious watery floor, and Sukuna chuckled devilishly.

"Just what exactly do you plan to do to stop me? You cannot even pick yourself up, idiotic brat" The force pushing him into the floor got stronger, the foot twisted deeper into his cheek. Yuuji opened his mouth in any way he mustered, but before any words came out of his mouth, Sukuna fully stomped his feet and Yuuji sank into the water.

He woke up on the tatami of his dorm in cold sweat and rushing heartbeat, a dry throat to top it all. '(Y/n)!', Yuuji snapped his head to glance at the coach. He stood up desperately, his legs stumbling, and he fell on the coach's armrest. His own eyes scanned your sleeping form; indeed, you were resting peacefully.

Itadori Yuuji's body collapsed on itself slowly. He fell on his rear, and then tired on his back. He faced the plain ceiling. His chest rose and fell rhythmically. Once he gathered himself, Yuuji glanced out the window and distinguished the light and smooth colors of dawn.

Fuck, it was late.

Naturally, he sought out the clock hanging on his dorm wall and his hand came to his forehead, where it damped. He brought it up his hair before it slid down to cover his eyes, and a series of swear words and curses left his mouth in a hush manner.

Time, he was running out of time.

“Fushigoro?”

Itadori Yuuji asked with a cracked voice. As an answer, he only received the distorted laughs of his friend, Megumi Fushigoro - no, of the curse possessing his friend, Ryomen Sukuna.

‘Fuck, fuck! How could this be?!’

Both you and Yuuji stood frozen in place, shocked. The tables had turned drastically, never had you entertained the thought of Sukuna switching into another vessel, least of all Megumi.

You took a quick glance at Yuuji. He looked heartbroken. Sukuna looked delighted, joyous, ecstatic. He ran his hands on his new hair, feeling the black locks of Fushigoro Megumi.

“Stupid brat, you didn’t really think through our Binding Vow,” he blurted in between laughs, his voice alien to his body as the red eyes filled with mockery and disdain.

“Die.”

You saw Megumi, no, Sukuna, incoming, and you picked up your stance, you looked sideways to Yuuji, and -

“Yuuji!!! Dodge!!!” You cried out for your friend, your arm desperately reaching for him, your body ready to sabotage its survival instincts to push him out of the way.

But you were too slow, and he did not move a muscle. He just stood there and took the powerful blow.

Eyes widened; you saw him spit out blood. With a single blow to the gut, Sukuna blasted Yuuji away, and his body crashed through several buildings, far from your sight.

It is about damn, fucking time. That Itadori brat has had his use, and at this point, he was becoming more of a prison than a vessel. Although dumb, weak, and naive, that brat did only one thing right.

He could restrain him.

Every.single.fucking.time.

Sukuna had tried more than a couple of times to catch you off guard. When you turned around, when you were too focused to notice your surroundings, when you stayed over to sleep at the brat's, when you were too weak and exhausted to fight, or simply anytime Ryomen Sukuna desired.

And each single fucking time, the damn brat stopped him.

But now, now that was a thing of the past. A nuisance he no longer had to deal with. Not as he had the body of Megumi Fushigoro under his control, and with a single punch to the gut, that weakling was done with.

Sukuna laughed, his eyes wide and mad, his pupils dilated, and his toothy grin wicked.

About. Damn. Fucking. Time.

Horror painted a canvas on your face, and despair formed a pit in your chest, but despite it all, you managed to cast a spell. Even with a tight lump inside your throat, you brought your hands together in a seal - your last two fingers crossed each other and the first three touched each other.

“Caladrius!” You conjured a white owl Shinigami big enough to carry you. You grasped its feathers to propel yourself upwards and climb it, but a tough arm grabbed you by the ankle.

“Oh, no, you won’t.”

He pulled you down, and you failed to resist his strength, but you were quick to command the owl to set off on its own. It was more important that it reached Yuuji, for his sake, yours, and Megumi’s - if he was still there, he had to be there, deep down.

With the usurped body of your friend, his black hair thrown back out of his usual hairstyle and sinister signature tattoos invading his skin, the ‘borrowed’ arms went around your waist, and his sharp claws slightly tore the layers of your clothes, prodding at the skin below.

“Do you like my new host, [Y/n]? I sure do; it feels refreshing,” The usurper said nonchalantly in your ear as you struggled against his frame. He chuckled at your struggle, finding it cutely futile if anything.

Sukuna lowered his head into the crook of your neck and inhaled your scent. He was slow, painfully so, taking his sweet time in tormenting you.

"So sweet," he whispered in your ear, but blood did not rush to your face nor taint the tips of your ears. No. That intimidating aura, that immeasurable amount of cursed energy so close to you.

You froze.

You could die here and now.

Only when you felt a slim sensation up your neck, dangerously close to your jugular, did you wince. Snapping out of your shocked state, you began to thrash in his hold.

Sukuna merely chuckled; you could feel his chest and abdomen rising and falling against your back. He laughed and laughed, baring his teeth and fangs, his four eyes brimming with joy. He dragged his maniacal display until it ended with a satisfactory sigh. His expression fell, his grin fell flat, and his eyes narrowed.

“You don’t have any idea how much I wanted out from that Itadori brat." the King of Curses sighed.

His arms began to snake around your waist, and his clawed hands grasped your skin. His sharp nails dragged tightly against your skin, leaving a thin reddish trail behind, but you were too focused on his words. “All this time I have been looking at you, woman, my woman. My future queen.” Such a passionate confession would leave anyone stuttering with a mad blush, but this was Ryomen Sukuna, the enemy of all enemies, the worst of curses, a threat to any living being - he couldn’t be serious, this just could not be real.

This was madness.

“You made friends with two weak and idiotic boys, did you know? But I must admit, at least that damn Itadori brat did quite the job in restraining me.” His nails began to feel tighter on your skin and were threatening to tear into you at any moment.

“All this time, I’ve been craving you.” He parted his lips and brought out his tongue, lapping it all the way up your neck. Sukuna relished it - he could taste your fear, and he loved it.

It was addicting.

He continued, “Now, now [Y/N]. If I had to tell you something with all my years of experience, is that I do not like being bothered” The King of Curses could sense people coming, and while he normally enjoyed torturing and murdering his enemies, just for this time he would rather be left alone, with you.

Utilizing the body of the Fushigoro boy, he moved his grasp from your waist and brought them together in a seal, in front of your abdomen - of course, silly, he would not let you go.

"Nue," his deep voice vibrated against your ear, and a wave of cursed energy flooded the area. You shot up your head, and your jaw dropped. Megumi's bird Shinigami had turned into a colossal predator, at least four times its usual size, and it even developed a tail. With the flap of its wings, thunder and lightning surged, attacking the neighboring area around you and Sukuna.

The sight of the beast made you snap out of your haste. You had to do something. Although you were powerless against this demon, Megumi was still there. He was being held prisoner in his own body, but he could break free. If you could just reach out to him, "Megumi! I know you are there! You can snap out of it, just like Yuuji! C'mon Megumi!"

Naively, your eyes sought for eye-contact. Only to see the four red irises of Sukuna, his tattoos shifting along with the grin on his face.

"Megumi? Really? He may be able to hear you, [Y/N], but I assure you, he's not coming back," Sukuna purred, his grip on you tightening. "Don’t make me jealous now, calling out another man’s name... I’d rather you call out mine."

Desperation and fear surged through your veins, but you refused to give in to Sukuna's taunts. Summoning every ounce of courage, you had left, you clenched your fists and glared defiantly at him.

"You're wrong! Megumi is strong, and he won't let you control him forever. I believe in him, and we will find a way to break your hold on him!" You retorted, determination shining in your [e/c] eyes.

Sukuna's laughter filled the air, echoing around you like sinister bells of doom. "Oh, how amusing! Your faith in him is laughable. But I'll humor you, my dear [Y/N]. Let's see how long you can hold on to that hope before I make you mine entirely."

As Sukuna's laughter subsided, you felt a surge of raw energy emanating from him. The air crackled with malevolence as Sukuna prepared to unleash his Nue’s full power. But before he could strike, an unexpected presence intervened.

A figure emerged from the shadows, radiating a powerful aura that seemed to challenge even Sukuna's might. Itadori Yuuji, battered, bruised and with several cuts from the earlier blow, stood tall with a determined glint in his eyes.

"Leave [Y/N] alone, Sukuna! This is between you and me," Yuuji declared, his voice steady despite the pain.

Sukuna's lips curled into a sinister grin. "You still think you can stand up to me, boy? I'll enjoy tearing you apart, scum."

Yuuji's resolve only strengthened. He clenched his fists and channeled every ounce of cursed energy he possessed. "I won't let you hurt [Y/N], and I won't let you get away with what you've done."

Using another set of Megumi’s shikigamis, Sukuna conjured the monster serpent (now, a full, intimidating horned cobra) and it curled tight around you- rendering you immobile as it drained you of your cursed energy.

The battlefield crackled with tension as Sukuna and Yuuji faced each other, locked in an inevitable clash. Meanwhile, you struggled against the shikigami’s tailed hold, trying to summon every ounce of cursed energy within you to break free. The ground trembled beneath your feet as the battle commenced.

It soon became clear that Yuuji was no match for Sukuna's overwhelming power. Despite his valiant efforts, Sukuna's strength and cunning proved to be too much to handle. With a single devastating attack, Yuuji was defeated, lying unconscious on the ground.

“Yuuji!!!” You screamed and tears welled up in your eyes.

Sukuna stood triumphantly over Yuuji's fallen form, a sinister grin stretching across his face. "Pathetic brat," he sneered, "You were never worthy of her attention. But now, she's all mine."

Your heart pounded in your chest as you faced the monstrous curse before you. Sukuna's eyes bore into yours with an unsettling mix of possessiveness and desire. He took a step closer, and you could feel his cursed energy suffocating you.

You clenched your fists, trying to muster the courage to stand up to him. "I'll never be yours, Sukuna," you retorted, your voice wavering and cracking but determined.

Sukuna's grin widened, reveling in your resistance. "Oh, how delightful. The more you resist, the more enticing you become," he said, circling you like a predator eyeing its prey. With a chask of his fingers, the shikigami which held you vanished, and you fell on Sukuna’s arms. One of his clawed and tattooed hands reached out to grasp you by the chin, forcing you into eye-contact and squeezing your cheeks- bringing your lips forward.

Your heart raced with fear, and Sukuna's grin only grew wider. His face inched closer, his breath ghosting over your skin. "My love," he whispered, his voice laced with a possessive edge. “I will not let you escape me. You are mine, [Y/N], and I will gladly be yours " he murmured, pulling you closer to him. Anticipating his actions, you focused your remaining strength in struggling against him. Regardless, Sukuna leaned in and succeeded in sealing his lips against yours.

Ryomen Sukuna kissed you with a passion you would never expect, or experience- a profound hunger and impatience that had been finally sated. A tongue, thick, slimy, and intrusive that relentlessly claimed a pair of lips it had been craving for so long, a desire long fulfilled.

His onslaught was merciless; he wanted more, but when he looked at your flushed face and shut eyes, and attention to your weakening fists against his chest, he chuckled against your lips and broke the kiss. You gasped for air and breathed frantically, as Sukuna admired the trail of saliva that bridged his lips to yours.

"You are mine, [Y/N], and there's no escape. I have been waiting for so long; I have been so patient. I think it’s time I deserved my reward."

His lips peppered and trailed up your neck, climbing across your jaw, past your lips and near your ear. He whispered, hungrily and husky “I’m just so hungry for you.”

A/n: I’ve literally been trying to write this a LONG time ago, and finally broke through! I hope you like a normal dickhead sukuna that is a hard simp for darling. One more sukuna fic that I’ve been saving to go!

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