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almightygremlinblob · 5 months

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Promise Me This (Kaorijaku x Jin Itadori)

Writing this was…honestly a fever dream. I did NOT mean for Jin to be this unhinged, JESUS CHRIST. Kenjaku is reffered to with he/him pronouns (except for wife) but has fem!body parts cuz…well, Kaori. This is also under the HC that the Itadori family, while not exactly sorcerers, weren't completely oblivious to the world of curses. Anyways, no beta'd smexy-times under the cut, so minors or anybody not comfortable with that DNI pls.

Word Count: 2730-ish words of Kenjaku having the time of his life and Jin being a maniac

⚠️CONTENT WARNINGS⚠️

Soft Dom!Jin Itadori. Jin being just…absolutely UNG-FUCKING-HINGED in this, like, he dives face first off the deep end. Kenjaku being a complete slut and bottom for Jin (like, srsly, he is down HORRENDOUSLY BAD for his man), ft. his breeding kink and a little OOC. Multiple orgasms. Monsterfucking. Body horror cuz Kaorijaku. Squirting. Jin makes out with Kenjaku's brain mouth. Everything's consensual, tho and ends in kinda fluff? Would you consider that fluff? Does that make it worse? I don't know.

It was amusing the first few weeks, but Kenjaku's had enough of it; deciding he might as well rip the bandaid off.

"Why do you pretend, Jin?"

"Pretend what?"

Kenjaku huffed, humans could be so interesting (and infuriating), sometimes. Jin may have been grieving, but he wasn't an idiot, and Kenjaku knew this. Sensed it in how cautious he'd been when they first met, though…that didn't stop him from playing around with what he could get away with. Yet, still, ever since 'Kaori' came back, the both of them had settled into an awkward domestic bliss which was…quite intriguing. Actually, that was a lie. Kenjaku very much enjoyed it. Jin was fun to prod and play around with; watching the mix of confusion, horror and sometimes arousal from the other was just…

It was so much fun.

Though, during the time they were together, nothing too intimate ever happened. They'd cuddle, hug, sleep in the same bed together, take baths together, and he'd never miss how tenderly the other would touch his scars when he thought he was asleep - a strange development in the past month - but nothing more than that. Hell, Jin never once even kissed him all this time, despite the curse's relentless flirting - which was NOT something Kenjaku enjoyed.

Clearly he knew something was off, and yet…

"Kaori?" The water stopped running, and Jin put the last of the dishes onto the drying rack, before going over to his late wife and wrapping his arms around him. "I'm not pretending anything, silly."

"You know something's wrong with me."

"…yes."

"And yet you still play make believe with me?"

"I do."

"…" Kenjaku sighed. "Care to tell me why?"

"I told you…" Jin's lips trail over Kenjaku's neck, not kissing but…definitely teasing.

Oh, this was new!

The curse couldn't help but the smile that formed on his lips. Jin's touch was sending delightful shivers throughout his body, and it made Kenjaku almost ecstatic that he was finally initiating something. His next words though, practically had a growing heat start to pool in between his legs.

"I'm not pretending."

"I don't know what you are…" Jin sighs, and Kenjaku doesn't realize how he chases the touch of the other's lips on his neck; too drunk on the way his body was feeling. "And I've decided I don't care. You brought Kaori back to me…even if she's not…you're not…"

"You still brought her back, in some way." Kenjaku feels Jin's grip on him tighten, most probably out of frustration, but he enjoys it regardless. "And if you want to play good little housewife, I can give you that."

"You're an interesting one, Jin." Kenjaku laughs. "I think…think I'll keep you."

"Say, your name…your real name…what is it?"

"Ken…K-Kenjaku. I've-I-I've heard, ah…" Shit, he was stuttering. Kenjaku smirks, feeling a pleasant dizziness but takes a deep and shaky breath to recompose himself. "H-heard you arguing with your old man, you know…a-about a child. Did you want one?"

Jin's breath hitches. "Yes…with her. It was a shared dream of ours…"

"I-I can still do that for you."

Jin is silent for a while, thinking. He could still have a child with her…oh, but who was he kidding? No, no. This woman in front of him wasn't just her, was it? Jin's grip on Kenjaku loosens just a little. Just so he can look at the other - this…this thing wearing the corpse of his wife - properly. Jin smiles softly at the realization that…perhaps, he really was going insane.

Because it wasn't just about Kaori, anymore.

"Do you want one? Hm?" Jin's eyes pierce through Kenjaku, even though his smile is kind. The curse is caught completely off-guard by the intensity of his gaze, and it makes the heat pooling in between his legs only grow more. The pink haired man tilts his head, finding his lips and Kenjaku swears he stopped breathing for a good minute as Jin continued to gently kiss him. A strangled noise escapes Kenjaku's throat when he feels Jin's tongue slowly lap at his bottom lip. "With me?"

"I-I…" For the first time in a while, Kenjaku is speechless. He simply laughs, before kissing the other back. Shit, he didn't realize how ecstatic he'd been until he was feverishly exploring Jin's mouth with his tongue.

Before the both of them know it, they're naked in their shared bed, Jin passionately lapping at his wife's dripping folds. Kenjaku can't help the noises that come out of his mouth. "Y-yes! God, ye-"

A hand harshly grabs at his throat and squeezes hard. The curse sees Jin glare at him from between his legs, and it makes his cunt throb even more. "Be quiet. You'll get your turn."

Kenjaku can only whimper and whine when Jin continues to feverishly lick and taste him, dragging his tongue up from his folds up to his clit and occasionally sucking on the sensitive nub eagerly. The curse gasps for air when Jin releases his grip, dizzy and ecstatic, before whining when Jin inserts a finger. Another easily slips in, shortly after.

"I'm so happy…your body still remembers me, Kaori." Jin laughs quietly, and Kenjaku is chokes on a sob when Jin curls his fingers - fucking that wonderful spot inside him while scissoring him open. The pink haired man smiles softly as he glances at the curse above him, the look going completely unnoticed by said curse who was lost to the pleasure. Jin closes his eyes and begins to suck on his clit, fucking the curse with his mouth and fingers.

"A-aah, fuck-Jin!" Kenjaku practically mewls as he bucks his hips, gripping onto Jin's hair and grinding himself on his tongue and fingers. It only takes a few more moments until Kenjaku finds himself coming undone, entire body shaking as Jin rides him through his orgasm.

Kenjaku feels strangely empty, though not unsatisfied, when Jin pulls his fingers out, giving his clit one last tender kiss before getting up. It takes several breaths before the curse can speak again. "I-I…what abo-"

His words die in his throat when Jin hooks the other's legs around his hips, caging Kenjaku underneath him. The curse can feel Jin's cock, deliciously hard and leaking against his cunt, and what the other says next has Kenjaku's legs go weak.

"Your turn now, Kenjaku."

Jin says into his ear, low and hungry, but then stays silent and still for a while. The curse can tell he's thinking of something, and he can't help but feel intrigued. His arms find their way around his shoulders, not realizing how tenderly he strokes the others back.

"Tell me what's on your mind, Ji-…n…" Kenjaku's words die in his throat when he meets Jin's eyes. They're hungry, and it makes his cunt ache again. Only...he wasn't looking at his wife's eyes, he was looking somewhere a little higher.

"Stitches. Off."

His eyes go wide. "What?"

"It's where you are, isn't it? And I told you, it's your turn." Kenjaku goes still for a while, shocked, but then just starts giggling; giddy and elated. "You know…normal people can't see my kind. U-us curses, we're-"

"Take them off, Kenjaku."

Kenjaku smiles, and wordlessly does as he's told. Fluids leak from his head as he parts the cut to reveal the light pink flesh underneath. Jin finally sees the curse for the first time in months. The curse doesn't miss how soft his eyes become, and watches as he carefully traces his thumb over the curse's mouth. "There you are…"

"Ah, my bad. So I correct about you lot…"

Jin sinks himself into the other's cunt, hissing at how hard Kenjaku's walls suck him in - though with how wet the other was it was easier than expected to slip inside. The curse nearly comes undone again, then and there. He's never felt this full, before and it felt incredible. Jin's lips meet the curse's actual mouth and has Kenjaku drooling and whimpering underneath the pink haired man, overwhelmed as Jin's tongue explores him completely. When he pulls away from the kiss, Kenjaku starts laughing, and Jin gives him a worried look. "Are you…are you alright?"

"G-god, you're insane, Jin Itadori…"

Jin huffs, smiling softly but not denying it. "I'm gonna move now, okay?"

Jin starts slow, but his cock deliciously drags against every part of the curse's cunt. The pink haired man smirks, feeling Kenjaku's nails leaving dents on his back as he holds onto him. "A-aah…f-fuck, I…"

Jin laughs softly. "Is this your first time?"

"A-as a woman, yes…" Kenjaku can't stop his legs from trembling as they wrap tightly around Jin. "I've…c-courted many in all my bodies as a man, but this is…I-I've never…"

"I'll take that as a compliment, then, but…let me make it better for you." Jin huffs. He didn't miss the implications of…of body hopping that this monster was capable of, but…well, he didn't particularly care at this point. He puts two of his fingers in his wife's mouth. "Be good and suck on this for me, yeah?"

The mischievous look in his eye doesn't go unnoticed by the curse, but Kenjaku simply does as he's told. Jin rewards him with a kiss on his real mouth and adjusts him a little, before thrusting with a steady and brutal pace and making the curse see stars. Despite his whining, Kenjaku's cunt sucks his cock in hungrily as he's brutally fucked by the other.

The nails that rake against Jin's back and arms break the skin and only serve to spur him on. Kenjaku sobs when Jin pulls away from the kiss and removes his fingers from his mouth. The curse greedily sucks and marks the other's neck using his wife's mouth, all while begging him with his actual one. "Ngh! God, d-don't stop! Fuck, p-please, Jin-!!"

"C'mon, louder. Let me hear you."

"Y-yes, oh god, Jin-!!!"

Jin's hips still and he groans as he fills Kenjaku. He takes a few breaths before slowly starting to move again; fucking his cum deeper into the curse. The feeling of so much of it inside him has Kenjaku seeing stars, but what sends him into another orgasm was the realization that Jin was going to get him pregnant at this rate.

He was actually going to carry this man's child.

"O-ooh, fuuuck…" Kenjaku's body tenses, cunt squeezing him deliciously hard that it has Jin hissing again. He notices Kenjaku breathing deeply, his body twitching and limp, and gives him an apologetic smile. His hand gently strokes the pink flesh of the curse.

"You okay?"

"D-don't. Stop." Kenjaku manages to say in between breaths. Jin laughs softly, kissing him tenderly on his mouth and making the curse dizzy with delight.

"If you say so." Jin smirks, before hooking Kenjaku's legs over his shoulders. The curse screams something in a dialect Jin can't understand, but was clearly some kind of Japanese, when the human somehow reaches even deeper into him; tip kissing the entrance to his womb with every thrust and shaft deliciously rubbing against a spot inside him that has Kenjaku nearly blacking out. Jin was reaching every part of him, the deepest parts of him, and it was incredible. The human forces his tongue inside Kenjaku's mouth, and the curse's eyes roll back - body completely tense and overwhelmed - when Jin begins rubbing on his sensitive clit. This was all so much.

Kenjaku was going to lose his mind at this rate…

Not that he was complaining, though.

Jin's pace picks up, and Kenjaku feels him twitching inside. It doesn't take long until Jin spills inside him with a few messy thrusts, the curse mewling when he feels him spill right on his cervix. Though Jin doesn't stop rubbing on his clit, and this has the curse squirting his own fluids and making a mess of both their legs shortly after. Kenjaku whimpers when Jin flips him on his stomach, though doesn't make a move to stop him at all, Jin's hand finding its way around his neck once more. Bringing him close to his face, the curse's back arching beautifully underneath the human.

"A-ah, Jin…please, I want-" Kenjaku is cut off by Jin's lips on his mouth, sucking and kissing him tenderly.

"Shhh, shhh…I know, baby." Jin pulls out nice and slow, leaving just the tip before harshly thrusting it back in. "You like that, yeah?"

"Ngh…n-need...p-please!" Kenjaku's cunt is practically leaking with how wet he was. Jin fucks him slow and brutal, cock dragging along every part of his insides before being slammed back in.

"Thaat's it…good." Jin huffs into his ear, licking and biting his neck before pulling away. Kenjaku feels his heat leave his back as Jin repositions himself, placing his hands on Kenjaku's hips as the curse's head rests on the bed. "M'gonna move a bit faster now, yeah?"

Kenjaku just nods frantically and his moans turn into screams when Jin ruts into him like an animal in heat. The curse screaming in that dialect that Jin can't understand. Kenjaku's eyes roll back, mind going blank as his cunt greedily sucks and squeezes Jin's cock with every thrust. They both lose count of how many orgasms and hours go by, as Jin ruthlessly makes love to Kenjaku and his wife, with all the pent up feelings he has for them both.

All Kenjaku knew was that his mind was going blank. His legs felt like literal jelly and it's as if his body was being torn apart. He's never felt this close to breaking without actually dying before.

It was incredible.

"A-aaah, you're doing so fucking good, Kenjaku. Cum for me one more time, yeah?" Jin bites his lip, Kenjaku can feel him twitching and throbbing inside him again. "Almost there, baby. I'm so close…"

Kenjaku smiles, nearly delirious with pleasure, as the thought of carrying this man's children sends him over the edge, again. His legs trembling as he spills even more of his fluids onto the bed. "J-Jin, o-oh fuuck-!"

With one last, hard thrust, Jin stills inside him again - cock fully sheathed and throbbing as he gives Kenjaku another thick load. His cunt milks him deliciously, but he feels Jin filling him beyond what he can take - hot streams of cum dripping down his thighs. Kenjaku's almost sad that so much is going to waste.

Jin groans and nearly pulls out but Kenjaku quickly grabs his wrist.

"S-stay. Stay inside me…" Kenjaku barely manages to say, completely fucked out of his mind. Jin looks at him softly, carefully moving him without pulling out, so the both of them can lie down in a more comfortable position.

For a long while, their breathing was the only sound there was.

"Th-that was…" Kenjaku finally breaks the silence, but is unable to continue his sentence.

"Good?" Jin gently kisses the curse on the mouth, again.

"Nearly the best I've had in a while…" Kenjaku gulps, and looks at Jin cautiously - dare Jin say he almost looked nervous. "Th-the world I'm in…it isn't known for being the nicest, you know. You should leave me, while you can. It's safer for you. Curses, we aren-"

"No." Jin huffs. "I am not. Leaving you."

Kenjaku is silent for a while. "Why?"

"You brought Kaori back to me, in some way, even if she isn't…I mean, you aren't…" He gently strokes the curse and sighs. "But I'm not staying for just Kaori…you understand that, right?"

"I…I see." Kenjaku can't help the way his stomach flutters, or the warmth that blooms in his chest upon hearing that. It was irrational, and yet...

Jin takes a deep breath. He knew staying with the other was practically a death sentence for him. However, if he was to be honest with himself...he didn't really care anymore. Only...he worried for his child. "Just…look, I know I won't last long with you. So please promise me something. Promise me you'll continue to watch over my child even if I'm gone."

"And if I don't?"

Jin rolls his eyes, knowing the other was just messing with him. "Then I'll haunt you for the rest of your life."

"All the better to break it, then." Kenjaku laughs softly, and decides - for once in his life - to do something stupid for reasons outside his plan. Jin makes a confused look as he feels something almost constricting him, but then Kenjaku plants his mouth on Jin's and seals that silent vow with a kiss. The feeling is gone as soon as it came. "But…you have my word, Itadori Jin."

WRITING THIS WAS WOWZERS MAN. 😬Also, "watching over" isn't necessarily the same as "taking care of". But, anyways, if you like my work, consider donating! Edit: WTF WHY DOES THIS HAVE 75 NOTES??? NOBODY LOOK AT THIS WHAT

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