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Coitus ex Machina

Summary:

“Maybe we are in a non-lethal domain. We just have to complete the requirements. And poof! We’re out.”
“And how do we know what the requirements are, sensei?” He teases.

Notes:

Happy [late] birthday, Lanni!!!!!! <3

(See the end of the work for more notes.)

Work Text:

“So-o…come here often?”

“Shut the hell up, Gojo! This is all your fault!”

Utahime huffs harshly, and Satoru has to repress a delighted shiver when her hot breath teases his face. She’s close, much too close, not that it’s her fault. The tight walls of the box surrounding them force them into each other’s space. Luckily, the walls glow faintly where they meet, so both sorcerers can see where they’re putting their hands. Nothing has been groped— yet.

Benevolently, he had softened her fall when they tumbled head-first into the curse’s trap. He could have kept Infinity active and had her bounce roughly off, but then he wouldn’t have the excuse to feel the length of her body pressed against his. Yeah, he can acknowledge that he’s a bit of a creep, but years upon years of touch starvation can drive a hot-blooded man a little stir-crazy. Especially when he’s situated between the thighs of the love of his life.

Not that she knows that.

“Can you push on the top?” Utahime asks.

Satoru tries it, but it remains firm. “No-ope,” he pops the ‘p.’

They have just enough room to stretch out horizontally but hardly any vertically. Her back must be aching from arching over him—the dim lighting of the expansion glints in her angry eyes. 

“You sound too careless for the one who got us into this.” She sneers.

“Not my fault you were taking forever to exorcise one flimsy curse.”

“Well, that flimsy curse got the drop on you.

Satoru has nothing to say to that, so he just sniffs, turning up his nose as a response. She groans with a pout on her plush lips, and a surge of desire heats his veins. It’s good that they’re in different cities. If he had to be this up close and personal with Utahime all the time, he would’ve gone insane years ago. Or act like a total ass all the time, as opposed to just when she’s in town. His students ought to thank him for his incredible foresight in recommending Utahime for the teaching position in Kyoto. 

Resisting the urge to lick into her frown like some sort of desperate, pathetic dog begging for a scrap of affection, Satoru taps the side of the box. 

“A domain expansion, of course,” Utahime mutters, though Satoru can sense the rising panic in her voice. “But why does it feel different?”

“Been in a lot of expansions, have you?” 

“Studying does wonders, ” she responds drily. He laughs.

Satoru says, “No, you’re right. It does feel different.”

The two ponder for a moment. There is no immediate danger; Satoru would’ve been able to sense it coming a mile away. For now, he enjoys the warmth of her body, a treat he hardly ever gets to indulge in. 

“Ah-ha!” She exclaims, thrusting a finger in the air and nearly clocking him in the nose, “Oh, sorry.”

“What is it?”

“Remember that domain expansions weren’t always primarily lethal? The curse I was after has killed people, but only indirectly. Victims were found having died of starvation or thirst without a wound on them.”

“Like they’ve been trapped for a long time.” He says.

She nods, looking pleased with herself. It’s cute, and he wants to kiss her so severely that the hunger hollows his chest until he’s sure all that can fill it is her touch. Fuck, he’s hopeless. Suguru would be mocking him viciously right about now.  

“Maybe we are in a non-lethal domain. We just have to complete the requirements. And poof! We’re out.”

“And how do we know what the requirements are, sensei?” He teases.

Her lips curl with amusement. Sometimes, he can get her to laugh, too. Small miracles. “There must be something in here. Help me look.”

The pair cranes their necks and searches along the walls in awkward, shuffling movements. She elbows him and whispers a quick apology. He leans on her hair by accident and snickers at her feline swatting. 

“Hey- is your ass glowing?” She asks bluntly, cocking her head and staring at his crotch.

He covers himself with his hands, shooting her a coy expression, “My, Utahime-senpai, preying on your favorite kohai the moment you get him alone?”

“Shut it! And Shoko’s my favorite.”

He scoots back, rearranging them so his legs are spread across the box floor with his back against the wall. Utahime stands between his legs, hunched so highly that her face hangs close to his. Her long black hair tickles his nose, and he keeps from sneezing in her face. That certainly won’t get women interested in him.

Under where his ass had been parked is a glowing script. They read: 

Lying by omission is still a lie. Honesty is the heart. To leave is to come. 

Utahime frowns, “Lying? To leave is to come? What does that mean?”

He looks at her blankly. His cheeks warm, the walls suddenly feeling much tighter than before as the truth of the matter dawns on him. There’s only one thing Satoru has ever lied to Utahime about. 

T minus 10 seconds until the end of his existence. It’s been nice knowing ya. 

“Honesty is the heart…” she mutters, “Lying by omission is still a lie.”

He swallows thickly. Nervousness is not his usual trait, but Utahime has always brought out new and exciting feelings in him. Like his first wet dream, for example.

“I’m guessing we need to be honest? Is that what it’s saying?” She asks.

He shrugs, “Think so. What have you been lying to me about, hu-uh, ‘Hime?”

She rolls her eyes at him, “What’s there to lie about?”

Plenty when you’re a hopeless romantic with a taste for angry women. 

“What about this third line?” He says, changing topics before she can ask what he is lying about. Not that he isn’t only delaying the inevitable. 

“To leave is to come…ugh, my back hurts.” Utahime places two palms on either side of Satoru’s head and stretches her back the best she can. The sight of her arching her ass makes blood rush south. 

“Here, sit down,” he offers, patting the spot between his legs. 

She eyes him suspiciously but lowers to her knees. It is a tight fit between his thighs. His chest aches, and he realizes that he stopped breathing. His breath resumes with a shudder. 

“Better?” He asks.

“Yeah.” The glow of the letters illuminates the concentration on her face. She’s so beautiful it hurts. 

Continuing, she says, “This is obviously the way out. To leave is to come. Come where?”

Maybe it’s because his head is in the gutter from how she’s between his legs, but he can’t stop himself from joking, “Oh, I can come anywhere you tell me to.”

Her face flushes, but as she goes to reprimand him, she falls deathly silent. She looks back down at the glowing words with trepidation. 

He blinks. Then it makes sense—his secret. To leave is to come. 

“Oh,” he mumbles, “to cum.

Utahime inhales sharply, and her head whips up to stare at him. “No- no, no, no,” she groans in horror, “it does not mean that. I mean. It can’t possibly. What sort of pervert curse is this?!”

Feigning stoicism, Satoru shrugs, “Wouldn’t be the first sex curse I’ve seen. Though, usually, they’re not voyeurs.”

“Oh my god, shut up.” She presses the heels of her palms to her eyes, dropping her head back. His eyes immediately glue to the length of her pale neck. “This can’t be happening. It just can’t. Not with Gojo Satoru.

Satoru’s brows dip in displeasure as a familiar surge of jealousy twists in his chest. “Have someone else you’d rather be in here with, do you?”

Her hands fall from her face, and she glowers at him, “No! There’s no one I’d want to be stuck in a sex box with!

He rubs the back of his head, his elbow hitting the side of the box. He hasn’t turned Infinity back on to keep from crushing Utahime. 

“Could be worse.”

How, Gojo, how could it possibly be worse?!”

“First of all, ouch. Tell me how you really feel. Second of all, you could be stuck in here with Gakuganji. Or a student.”

Utahime’s face drops, and he’s pleased to see relief rush through those big brown eyes. “That’s- ugh, yes, you’re right.”

“Please, say that again, ‘Hime, gets me going.”

“Idiot!” She snaps, slapping at his chest.

He captures one of her hands in his, the skin beneath his baggy uniform tingling from the warmth of her palm. She stares at him with wide eyes, like a bunny in the claws of a fox. His cock swells with need. 

“Wh-what?!” She demands hotly.

“We’ve got to be honest, Utahime. That’s how we get out.” 

“About what!” It isn’t a question, more so a shield propped between them. She isn’t looking at him anymore. 

“There’s no one else I’d rather get stuck in here with.” He confesses bluntly, his heart thudding like crazy against his rib cage. He wouldn’t be surprised if it burst out of him like a cartoon.

Her shoulders nearly touch her ears with how tense she is. “Wh- I-” she bites her bottom lip and takes a deep inhale through her nose. “Okay. Yeah. Me, too.”

He smiles at her, his thumb stroking over her knuckles. “...you’re attracted to me?”

She nods stiffly, “Unfortunately.”

A giddiness rises within him. Sure, it’s no love confession, but he’ll take it. “You li-ike me, you wanna ki-iss me!”

“Do you ever stop talking?!” She growls.

“Maybe you can make me?” He says in one breath.

She glances at his lips and then away again. Finally, she seems to find inner strength, for she rolls her shoulders back and meets his gaze. 

“Okay. Fine. We’re doing this. But you’re not touching me.”

His brows furrow, “How will that- oh.

Her fingers cup him through his pants. His back goes straight with a mixture of shock and pleasure. The feeling of her tiny fingers stroking up and down his hard cock, even through the thick material of his uniform trousers, makes him weak in the knees. 

“Oh- uh- okay- yes- we’re doing that-”

“Hush, Gojo.”

His jaw snaps shut. Yes, ma’am!

She touches him like that for a few excruciating seconds, as though mapping him out. Then, she releases him to fiddle with his zipper. He raises his hips, chasing her touch, and her other hand replaces what was lost. 

The zipper parts loudly in the cramped silence, and the next thing he knows, his cock is free and standing proud. Utahime huffs angrily at the sight of it, “Of course you’re big.”

He grins at her, hardly believing the turn of events. “Were you hoping I’d be small?”

“I was hoping that you wouldn’t be perfect everywhere.”

“You think I’m perf- eeeect! ” He tosses his head back with a breathy gasp as she takes his bare cock in her hand. 

Her palm is calloused from years of training, yet even so, it feels incredible as it slowly begins to pump him. His foreskin rolls delightfully over his tip with each stroke. A little dry, but that’s-

She leans forward and spits on his dick. 

Fuck.

He’s so in love with her.

“God- Utahime- ” he pants, thrusting his hips in time with her fist. He’s far too sensitive, too many years of being shrouded in Infinity making his skin starved for another’s warmth. Her hand is far smaller than his own and feels so much better

Meanwhile, Utahime watches him with those dark brown eyes, like two pools of hot chocolate. They strip him to the bone, creating a vulnerability in him that clashes with his obsession with control. No one touches him. No one sees his desperation. 

But now Utahime has. It feels amazing. 

“This…probably isn’t enough…” Utahime whispers, her gaze dropping to where she pumps him with languid strokes. She licks her bottom lip, her cheeks flushed with lustful heat, and his eyes nearly pop out of his skull when she dips down. 

She gives a kitten lick to his cockhead, right along the slit. His pearlescent precum smears onto her tongue. He groans with heady pleasure, feeling as though a cord is tightening within his loins. His hands rise to touch her, and without even looking, she swats them away.

“What’d I say?” She says, and he spots the ghost of a smile on her lips as she peers up at him. His cock looms in front of her face, looking so large compared to her tiny mouth, her small hands. 

He grits his teeth and presses his palms to the floor. They itch with the desire to tangle in her pretty raven hair. Obedience is not in his nature, but he’ll do anything to keep this from ending. 

She must be pleased by this, for she rewards him by allowing his cock to slip into the wet heat of her mouth. 

“Fuck!” He snarls, throwing his head back so hard it hits the wall.

She pulls off of him, concerned, “Are you okay? Did I-”

“Please don’t stop,” he begs.

Blinking in surprise, Utahime resumes pleasuring him. She swallows him down again and begins to rise and fall in rhythm with her fist. Where her mouth cannot handle, her tight grip makes up for it. Thick saliva drips from her gaping mouth and down his shaft, slipping to his balls. 

She suctions him beautifully, her tongue teasing along him until he’s shivering with delight. She keeps a steady pace, each stroke bringing him closer and closer to the peak. 

He stares at how her ass sways in the air. Even the baggy hakama she wears cannot hide the swell of her cheeks and the thickness of her thighs. “Please- Uta- lemme touch you-”

She shakes her head, and he groans despondently. Sucking harder, moving her fist faster, Utahime slips her other hand into his trousers until her fingers begin to stroke his sack. 

“Ah- yes-” he moans, “like that, you’re perfect, you’re so beautiful-”

She hums around his cock. From this angle, she cannot look up at him without straining, and he mourns not being able to stare into her eyes as she sucks him off. Next time. There will be a next time.

The box heats up with their labored breaths. Utahime pulls her mouth from him to take a few deep breaths, her nose clogged, and he nearly cums right then and there when he sees tears dotting her lashline. 

“Do you like it?” She asks softly. Her sudden shyness makes his dick twitch. 

“Yes, it’s amazing, you’re amazing.” He rambles. 

She smiles gently at him. Her own face is flushed and sweaty, and she squirms under his heavy gaze. He glances at her raised hips and says again, “Let me touch you. Wanna touch you so bad.”

Her eyelashes flutter. She shifts her weight. “...just a little.” 

Then, she lowers her head and takes him in her mouth again. Now, having her permission, Satoru wastes no time. He strokes her hair, careful of tangles, and drags his palms across her back. She shivers at his touch, and her ministrations falter as he catches her attention. 

Lower and lower, his hands go until they’re slipping into the slits on either side of her bright red hakama. They burrow under the fabric until they meet the elastic of her panties. Doing so has him leaning forward, crowding Utahime and forcing her to take more down her throat. She moans softly, her back arching as she remembers what she’s doing and sucking him with zeal.

He grunts as her tongue passes over his tip. His fingers press to her core over her underwear, finding her sodden with arousal. He curses under his breath and rubs her, reminding himself over and over to be gentle, girls like it gentle, he has to be gentle-

Her noise of pleasure vibrates his cock, and he eagerly pulls her panties to the side to touch her directly. She has some hair, soft to the touch, and it makes his mouth water when his fingertips slip through her slick with ease. 

So wet-

-she’s this wet for him.

He gasps as an orgasm abruptly rocks him. It’s a violent and powerful eruption, far more intense than anything his own hand has given him. His eyes roll back, his fingers dig into the meat of her asscheeks, and he thrusts into her mouth fervently. 

“Fuck- please- ‘Hime-”

His hips twitch madly with his release, his cum painting her mouth white. Utahime rears back, surprise on her face, and some shoots onto her cheek. 

Suddenly, the walls around them blink out of existence. 

They’re in the same courtyard where they fell into the curse’s trap. His cock is still out, Utahime’s spit cooling on his flesh in the November air. He pants roughly, feeling as though he had just run two marathons. His hands flex around Utahime’s ass, the tips of his fingers brushing against her labia, and she whimpers. 

“Is it done?” She asks, blinking tears from her eyes. Her lips are swollen, her cheeks dark with blood. 

“Huh?” He hums, tugging her closer with his grip on her, forcing her into his lap. 

Her breath stutters as her hands land on his chest. “Go- jo! ” 

His fingers sliding over her aroused clit make her suck in a breath. “So pretty…” he murmurs.

“Oh- Gojo- wait a second-” She pants in his ear, yet her hips arch to give him better access to her. “We should talk-”

“You haven’t come yet,” he says against her sweaty neck. 

“Wait- Gojo- we don’t even know where the curse is!”

He sighs, hating her good sense when all of his senses are telling him to fuck her into the ground. Slipping his hands from her hakama, he pulls back, eyeing her with a blissed-out smile. “It ain’t around. I don’t sense it.”

“Damn it,” she mutters.

 “It must’ve booked it when it got the chance. Not everyone gets to say they escaped the great Gojo Satoru.”

Not for the first time, and certainly not for the last time, Utahime rolls her eyes at him. “Well, now I have to track it down again.

“I’ll help you, senpai,” he says happily. 

“You just want a quickie!” She pushes him, and he falls back with a playful laugh. Standing and brushing off her hakama, she rests her fists on her hips. “We never speak of today. And put your dick away!”

Oh, right, they’re out in the open now. And it looks like fun time is over. He tucks himself away, zipping up his pants, and bounds to his feet. “If we don’t talk about it, how will we do it again?”

She shakes her head, “We won’t!

“The box said to be truthful, ‘Hime.”

“I was truthful. We are physically attracted to each other. That’s it. We are adults, and we don’t have to act on it.”

He gasps theatrically, “I cannot believe you, Iori Utahime! Taking advantage of your poor virgin kohai and then tossing him so heartlessly to the curb!”

She freezes.

“The look on your face is funny, Utahime.”

“You’re…a….”

He smiles, inching closer to her, “A virgin? Yeah.”

Utahime’s face loses all color, and Satoru laughs again. “Wh-” she sputters, “why didn’t you say anything?!”

“What would it have changed?”

“I wouldn’t have just- just gone for it. I would’ve- I would’ve-” She trails off, eyes flitting around the courtyard as if trying to explain herself to an invisible jury. 

“Would’ve what? Lit a candle? Taken me out to dinner?” He snorts, “Didn’t exactly have many options.”

She groans dramatically, crouching on the ground and wrapping her arms around her folded legs. Her voice is muffled when she says, “I can’t believe I did that to a virgin.

And they call him dramatic. He taps the top of her head, “Guess you’ll just have to take responsibility, then.”

Another groan. Satoru laughs.

“I say we start with dinner. I’ll take you to karaoke.”

She looks up at him, his cum smeared across her cheek, and his heart leaps. “What makes you think I want anything more to do with you?”

Though her words are harsh, her tone is weak, and her face is still warm with bashfulness. How cute. 

“‘Cuz I need to return the favor, don’t I? You were so wet just from sucking me off.”

 “Hush!” She snaps, launching up and stamping her foot. “Enough! I’m leaving.”

She turns on her heel and marches off. He trails after her, his long strides easily keeping up with hers. 

He leans into her space, smirking devilishly, and taps his cheek. “You’ve still got some on your face.”

“Ugh!”




Notes:

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