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writerpeach · 9 days

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Studious Seduction

Oh My Girl Arin x m! reader

10k words

Thanks to @i-am-lifeform24 for help with editing

Part One | Part Two

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Read on AO3

"This seems like a bad idea, Miss Choi."

"It's a terrible idea, professor. Which is why we're doing it."

Without a doubt, there’s very little chance that you won’t be spotted here. Heading up a stairwell that leads up to who knows where is hardly ideal, especially with the sudden rain shower that's started to pour above, foreshadowing this bad decision made in tandem.

Yet, you’ve never been one to make the best choices. An inappropriate relationship with one of your students has to be ranked at the top of the list, wrong for a myriad of reasons—all that could get you fired. Still, it somehow continues unimpeded, knowing the risks, both of you doubling down even.

At this point, you’re not sure if you’re a bad influence on Arin, or if she’s a bad influence on you.

To make matters worse, today’s outfit of choice is this poor excuse for a school uniform that draws all your attention. A risky little ensemble that consists of a white shirt and black tie combo that only pretends to be proper, covering very little of her midriff, as well as this dark little pleated miniskirt so short it might as well not exist for how little of her thighs it hides. It leaves more of her creamy skin uncovered, and being her professor, you know it's not appropriate to look—yet you can’t stop yourself from doing so anyways.

And then there’s those dark frames on her face, the cherry on top that puts this whole thing together, that takes her from an innocent, responsible student more than invested in class, to this devilish vixen who struts into your office, demanding to be ruined, never taking no for an answer.

There’s almost no room for imagination, offering you such an obscene view when Arin heads up the stairs, purposefully walking in front of you with slow, deliberate steps. You can see the shape of her perfectly round butt cheeks exposed, her tight fitting thong doing anything but covering up delicious pale flesh. Of course, she knows exactly where your line of sight goes when you walk behind her, making an effort to shake her wide hips a little more with each step, giving you a shameless view of her tight, succulent ass.

This outfit is every dress code violation she could possibly make rolled into one.

But who's going to admonish her? You? Who can't even think logically at the moment when all your thoughts have turned to mush? Not a chance when all you want to do is slip your hand between her thighs too delicious to resist until she makes a mess on your fingers, the floor, and anywhere else that becomes collateral damage.

Right now, you have the perfect opportunity for exactly that. You’ve lost track of how many steps you’ve walked, but eventually, the stairwell comes to an end, with a set of metal double doors that leads up to the rooftop. As good a place as any other, you think, especially when there's little reason anyone else would want to venture towards the top level during this never-ending rainstorm.

“Here?” you question, when Arin presses your back against the cold wall just underneath the final level of the stairwell. A solitary gaze into her eyes is all you get before she wraps her hands around your neck and plants a heated, sloppy kiss on your lips. She nods in affirmation, but doesn’t give you the time to catch your breath, slipping her tongue into your mouth to make an attempt to taste all of you.

“It's really open here. Pretty easy to get caught," you tell her when she moves from your lips, placing wet kisses across your jawline, moving lower down to your neck.

"That's the point, professor." Arin places your hands firmly around her waist, leading you exactly where she wants your touch. Her legs spread a little further apart so you can push her skirt up, revealing just how tiny of a thong she's wearing. "I don't care if we get caught. Make a mess of me—"

She sighs when your fingertips press against her clothed core, so aroused you can already feel her slick leaking through the flimsy fabric. You add more pressure in response, rewarded with Arin's soft gasps against the sensitive skin of your neck.

"We could get in a lot of trouble, Yewon," you breathe out, barely paying attention to anything beyond this. In fact, you hardly care about what could go wrong either, so consumed with lust, one singular desire that Arin shares, and your fingertips ache to slip underneath these panties and sink right in.

"When has that ever stopped us before?"

She has a point.

This is risky as it gets. And that’s what makes it all more exciting.

Without wasting any more time, you slip a finger underneath the fabric of her panties, into her ridiculously warm cunt. A second one slides in right after, and soaked as she already is, barely puts up any resistance, the entrance of her tight little hole eagerly swallowing you up.

“Professor—“

A few strokes is all you manage before Arin throws her head back in delight, rolling her hips, moaning from nothing more but your fingers slowly pumping in and out of her needy cunt.

Arin clings to your shoulder as the tempo picks up, her other hand quickly traveling down your torso until it reaches your pants. She finds the button to your slacks right away, unzipping them to slip a hand inside your boxers. You let out a groan when she runs a gentle hand along the length of your shaft, slow and teasing—until she wraps her entire hand around it and grips you tight.

“Yewon..." A wave of pleasure rushes through your whole body. She's stroking your cock with such a perfect grip, slender fingers reaching down to fondle your balls, eager for what they’ve stored up just for her. Meanwhile, the sounds that come from her own throat as she rides your fingers become a necessary distraction, urging you to thrust into her a little faster, a little rougher—

"How many loads are you going to give me today, professor? I hope they're all as thick as they were yesterday—"

It's rather ridiculous, the things you hear come out of Arin's mouth. The demure looking girl in the front row, raising her hand up high, blushing just at the sight of you, now says the filthiest things when she's got her mouth on your earlobe and her pussy filled with your fingers. She's every bit the opposite of an exemplary student, but you suppose that's your fault, given you're the one who's trading straight A's for the roughest, raunchiest sex that almost always ends up with you finishing inside her.

But the way Arin sounds when she moans directly in your ear, riding your fingers so selfishly while they stay buried inside her cunt, it makes you forget all that. None of that matters. All that does is satisfying her needs and yours, and you won't stop until she's absolutely drenched your fingers, even if it ruins that pathetic pair of panties.

"Don't stop, professor. I'm so close…"

She's lost all inhibitions in her frantic desire to keep rocking her hips hard against your fingers. You can feel the tension about to snap, her walls squeezing the life out of your slick digits—all while she tries to keep a steady rhythm in her own pumping, giving your cock a good squeeze each time your fingers plunge to the hilt.

"Professor, please, don’t stop, don’t stop—" Arin’s breathing grows unsteady, heavy, and she gasps for air between every syllable that escapes her lips. You’ll do everything to oblige her, steadily thrusting, curling your fingers to find that sweet spot that gets her to moan the loudest until she lets go of your cock, clinging her entire weight onto you.

"You're gonna make me fucking cum—"

Nothing gets said in response, obeying Arin’s pleas, an uninterrupted stream of juices beginning to coat your fingers while she lets out one continuous moan, unable to speak coherently upon climax. Biting down hard on her bottom lip, she nearly draws blood before the wetness gushes down your fingers, rendering her panties useless, completely ruined with all this sticky arousal.

Her walls flutter around you, this explosive orgasm lasting far longer than you expect—but you don’t let up, pumping away as she spills more, riding this out until it turns into a second one shortly after. And when you press your thumb firmly against her clit, right as she starts to come down from her high, the violent trembles in her body repeat, sending her over the edge a third time, forcing her body to shake against yours, another loud, shameless moan spilling out of her in overstimulation.

It's a wonder how the rest of campus hasn’t heard the screams echoing all the way down the staircase. Were it not for the rain pouring overhead drowning out her cries of pleasure, it would be near impossible for anyone passing by to not hear a thing. So you’re blessed by the rains, both above, and between Arin’s sticky thighs.

After it’s all said and done, she can hardly support her own weight when the sensation of your fingers inside her becomes too much for her oversensitive cunt, Arin’s sweaty frame nearly toppling over as she breathes heavily. Good thing you're right here to do what she temporarily can’t, clinging to your body, your hard cock still poking against her as you keep her upright amidst these intense aftershocks.

"That was, fuck—you've really outdone yourself, professor. I can hardly stand."

When you pull your fingers out, you can’t hide the smirk that spreads across your face with all this slick clinging to your fingertips as she leans on your body to take a breath. The praise washes over you while Arin unexpectedly grabs your wrist, bringing your soaked fingers, all the way up to her lips to fervently suck the delicious liquid off.

You intently watch her lick herself off you, tongue lewdly swirling around the length of each wet digit, making an effort to swallow all of her mess. Her lips glisten with spit and wetness, a ravenous look in her bespectacled eyes as she cleans whatever she can, tasting every drop of her delicious essence, staring at you seductively until nothing is left.

"Guess I don't need these anymore," Arin says after a pause, gradually recovering as she peels her drenched thong down her legs, letting it drop to her ankles before she slips it off, stuffing it into your front pocket. A cute little smile later, and she looks more than eager for what's next, unable to tear her gaze away from how hard you’ve been left thanks to her.

"I should finish what I started, don't you think, professor?"

You don't even get to answer when Arin drops to her knees on the cold floor, tugging your pants and boxers further down, freeing your cock that so desperately needs it—so desperately needs her. With a cute, light giggle, she spits onto your swollen shaft, pumping the entire length with her delicate fingers, a low moan rising in your throat as she pays extra attention to the underside where she knows you're the most sensitive.

Her slender fingers work up the length of your cock, coming back down with a grip so wonderfully tight. She’s so ready, so eager to have her soft lips around it already. You can practically see her salivating when she leans in a little closer to lap her tongue around your cock in one long, lazy lick, pressing her lips into a light kiss on the tip of your shaft.

“Yewon—“

You can’t hold in a grunt when Arin rubs your tip against her mouth, not opening up enough to take you whole yet, instead tracing her full, soft lips over your needy cockhead.

“Don’t you worry, professor. Gonna make you feel so good. I promise.”

The anticipation explodes all at once as she parts her lips, slipping the entire head of your cock inside. The moment her wet mouth makes contact with your shaft, you groan at the sudden warmth, a sharp contrast from her icy cold hands. She takes more of your length down, hollowing her cheeks, keeping an intense, erotic gaze while slowly bobbing her head up and down.

"Mhmph—" Her warm breath sends shivers down your spine as her lips slip further and further down, the tip of her tongue flicking against what hasn’t disappeared into her mouth. You can’t help but let out all types of unabashed moans while she guides more of you inside, spit dripping down to your balls as she slides deeper, until nothing of you is left to swallow up, the head of your cock hitting the back of her tight throat with ease.

"Yewon, fuck,” you say, nearly breathless, and the way Arin looks up at you with her mouth so proudly sealed around every inch—there’s nothing better. “I'll never get enough of your pretty fucking mouth.”

Arin hums against the length of your shaft at your praise, working more of her magic on you, lips getting down so devastatingly deep against your base. She’s oh so eager, so unwaveringly committed to covering every single inch in saliva. Her hot little mouth slides down effortlessly, bobbing her head back, each stroke just a bit sloppier, a little wetter than the one before, with zero intention of giving you a chance to gather yourself.

“Nobody gives a blowjob like I do, right, professor? Nobody can make you cum as hard as I can. I love being on my knees for you so much, being a good little slut for my professor. That’s what I am, aren't I?"

Nodding your head is all you can do, breath heavy in disbelief of how good this oral assault is, the enthusiasm on display really proving how much Arin enjoys having your cock shoved down her wet, inviting throat.

You’d sacrifice your entire livelihood for a blowjob like this.

It’s quite simple to lose track of how many times her talented mouth takes your entire length down, so good at pleasuring you it's impossible to find words. The way her wet tongue flicks against your slit when she slides off, only to have you plunging all the way back into the heat of her throat—it's far, far too good.

"I want you to cum on my face, professor," Arin tells you, so casually as she pulls away for a brief second before going right back to licking up the length of your hard cock, spitting all the excess saliva over the rest of you. Then she’s back to placing hungry wet kisses against each inch, her tongue making a slick path before she gives the leaking slit of your cock another teasing, torturous swirl. "I want all of it."

At this rate, you think you could blow a load anywhere she wanted you to, already so close to bursting just at her tongue lavishing your cock with these feverish licks. She has this way of making you feel so special, like worshiping your cock is all that matters to her, your pleasure the most important aspect in her life. Her greedy mouth proves just that, making you groan so easily, especially when she dips down to pay attention to your balls and slurps so messily on them like she wants your load at any cost.

A few lazy licks down your sack and you’re back down her throat—just trapped there helplessly as she holds you, her pretty mouth so goddamn overwhelming when she swallows as much of your length as she possibly can, not showing even the slightest hint of strain. Her full lips stay motionless when they slide right down to your base, gaze locked tight, making your cock throb within her tight, wet throat.

“Stay there, Yewon, shit,” you groan, hands clutching her head against your crotch to speed up the path to climax. Each second she remains there feels like absolute heaven, fostering all this unbearable bliss, all while those doe eyes speak for her when her mouth can’t—impatiently waiting, desperately wanting to empty your balls.

When she releases her lips from your length, there’s a sexy little gasp that comes with the messy string of saliva pulling her back down. Repeating the act, she plunges right back down, nose nestling comfortably against your abdomen, lips wrapped entirely around the base of your length. “Yewon, god, you know what’s gonna happen if you keep doing that.“

"Oh, you’re gonna cum? Want you to paint my pretty face. Don’t you, professor?”

There’s no answer to offer other than what she wants, all thoughts drowned by another wet slurp when Arin once again takes every inch of you down her throat, the overwhelming warmth of her mouth suffocating your length. Then she rises, exposing your shaft to the cool air for only a moment until her throat tightens when you’re back down, fully sheathed.

Arin’s so dedicated to hearing you moan that these steadfast strokes show no relent, slurping from base to tip, hair all a mess as she bobs faster and faster, maintaining never-ending eye contact that’ll be the death of you.

“Need it. Need it so bad, your hot cum dripping down my face when I walk back down these stairs. Can’t wait to feel how thick and heavy a load you’ll give me.”

Her pace only begins to go into overdrive, picking up rampantly when Arin places her hands on your thighs for better stability, the hot slickness of her mouth far too much to handle. She takes every inch, all of you disappearing down, without needing to stop to take a breath, like she’s proving a point at how good she can get you off. There's no restraint as she bobs her head without inhibitions, sloppily, noisily, not even gagging when her throat delivers an unimaginable level of pleasure.

"Oh my god, Yewon, fuck—"

With each desperate stroke, you're so close to that edge, quickly approaching the inevitable. The tightness in your balls grows beyond your control, and there’s no time to think straight when her mouth feels this fucking good, almost there, absolutely about to—

"I'm gonna fucking cum, Yewon," you groan out just in time, with no qualms about how needy you sound. One last slow descent down to your base, then Arin pops your needy shaft from her mouth right when it seems you’re about to burst any second.

And looking as salacious as possible, she simply tilts her head slightly backwards, jerking you off while directing the tip of your cock straight at her face, eagerly anticipating the release that's about to cover her.

“Cum all over me, professor.”

You let out a strained, guttural moan the moment your first pearlescent stream shoots out, streaking across the bridge of her nose. These frantic strokes don’t let up, guiding your milky seed that unloads onto the perfect target—her glasses, coating the lenses in white and getting it all over her rosy cheeks. Another strand fires off as she shifts your cock downwards, a thick stream blasting across her parted lips that deserve so much of this load for helping you reach an explosive release.

She pumps, and pumps, until there’s nothing left, and by the time your orgasm winds down, Arin is a total mess, one you’ll never get tired of seeing your load plastered all over her. Her stunning features wear you like a proud smile, drenched in her handiwork, thick streaks that cling to her cheeks, those soft lips, and anywhere else it happens to land as she strokes your length to ensure not a drop goes to waste.

That look is all too familiar when the weight of your load starts to drip down, an orgasmic feeling that brings a grin onto her cum-stained face.

“That’s a big load, professor. Just what I wanted," she says as she removes her stained glasses, taking a nice, long lick right over the lens and making a show of the entire thing. "I think I'm obsessed. With your cum. It tastes so good, but looks better on my face."

"Yewon—you're ridiculous, you know that?" you tell her as she carefully slips the glasses back on, and wipes up whatever has run off to the corners of her lips, bringing her sticky fingers into her own mouth to slurp them clean.

"It's not my fault my professor's cum tastes so good."

But before she can even begin to clean off your cock, or savor what an absolute mess she’s covered in, the sound of footsteps nearby force her to stop mid-stroke, causing both your heads to turn with a shared look of panic. There's only enough time to tuck yourself back into your pants, but there's nothing to do at all about this massive load that's dripping all over Arin, nor what’s done a number on the stairwell.

"Get behind me, Yewon. Quick."

Arin nods and does as you say, scrambling to her feet, also making sure her thong is still tucked away into your pocket as you zip your pants up. The sounds of footsteps echo louder, yet there's only one real way to escape this stairwell, because you're not going out that door when the rain hasn't let up one bit.

When the moment those footsteps approach the stairwell entrance, they slow to a halt, making your heart beat faster. Arin moves fast enough to get behind you just in time, out of sight and behind your broad frame. And the two of you wait there, her body pressed against yours, trying to hold her breath, dreading to explain yourself to whoever just made this abrupt end to your fun.

"Professor? Is that you?" The voice sounds so familiar, but you can't quite pick it out, too muffled by the rain. But there's no doubt you've heard this voice before. It's certainly one of your students, so at least you won’t have to explain this to a faculty member. "What a surprise, seeing you here!"

Normally, you'd have all the time in the world for pleasantries and small talk, but this is the last place where you can do anything of the sort as you try to shield Arin. From who exactly, you have no idea as they walk into frame. Their name escapes you, not that you really care when all you want is to get out of this situation.

"Is something the matter, professor? Why are you standing there?"

"Oh, uh, nothing. I had some time between classes and came up here to check out the rain. It's not letting up is it?" You put on the best smile possible, knowing Arin can't be spotted right behind you. Luckily, your taller frame can block her body completely, and given how the area is poorly lit, there isn't much worry about the mess that's on her face at the very least.

"No, it isn't. We don't usually get so much rain this time of year, huh?" The unnamed student asks as she glances out the window, and for a brief second you fear the worst—but she doesn't seem to notice anything at all that shouldn't be there. "I didn't even bring an umbrella today either..."

"You might check the library, they'll have them."

"The library?"

"They used to offer some a few months back, but I guess everyone forgot. I'm sure they still have a few left."

"I might give that a try then, thanks. It's good to see you, professor."

When your student smiles and waves goodbye, heading back the stairs without another word, you're able to finally breathe a huge sigh of relief, knowing the ordeal is finally over, despite taking years off your life. "Jesus, Yewon."

"That was close.” Her own breath stays ragged and heavy, almost completely forgetful to the mess you've left on her face that still glistens. "Good save. Really pulled that umbrella story out of thin air, didn’t you?”

“Whatever it takes. Hey, they might have umbrellas. I’ve never gone there except to rail you.”

Arin laughs, then suddenly remembers she still has your filth all over her. “Better go clean up I guess..."

"This was a really terrible idea."

"Hey, this was my terrible idea," Arin corrects with a grin that manages to shine through all the mess. "And I don’t hear you complaining about me giving you a nice, sloppy blowjob, professor.”

“I could never complain about seeing my favorite student on her knees.”

“I'll go on ahead. Maybe I'll see you later? For office hours?"

You say nothing more as you let her pass you to head down the stairs first, standing here a bit longer for your heart rate to calm before you too make your exit. You've got a class in under an hour that you haven't prepared for, and now how could you, coming so close from potentially losing your job. But yet, somehow, through all that, Arin was right—the rush of getting caught is exhilarating, but that was far too close for comfort.

✦ ✦

So after all that, logic would dictate that you should be a little more careful, that maybe you should stop having sex with your student in places you're bound to get caught—but logic went out the window the moment you bent Arin over your desk for the very first time. What else are you going to do though, take her home to your apartment where there's actual privacy, where you don't have to keep quiet?

That sounds so very drab and mundane, and you'd rather spend another ten hours grading papers than go the proper route. You don't even know what you would do if you wound up in Arin's bedsheets, having all the freedom to rail her for hours instead of the thrill of being in public where you have to be quick and quiet.

There's nothing wrong or unhealthy with this relationship. Not one bit.

You've told yourself on multiple occasions that you should dial it down a notch, not meet quite so often, or at least not in places that will put your career at risk. After all, your luck is going to run out one of these days, and the day could very well come when more than just a student catches the two of you, maybe one of the other professors, or god forbid the university staff.

And then it's all over for both of you.

Yet, there isn't a day when you don't seek each other out, find some empty closet, a vacant faculty office, or that spot near the back of the library that's so dusty that no one frequents.

The risk is almost as good as being balls deep inside Arin itself.

You can't exactly help yourself when she wears these slutty little outfits that practically beg you to rip them off her, nothing but the shortest skirts imaginable to class, where you have to stop your eyes from wandering throughout the entirety of the lecture.

Arin sits in the front row for a reason, and that's not to get a better view of the whiteboard. No, it's so she can spread her legs open when no one's paying attention, flash whatever sexy pair of panties she has underneath (or the lack thereof on occasion), and sometimes even play with herself so she can show off how wet she is.

Somehow, no one's really noticed how often you have her in your office, where there's less talk about class going on, and more your head buried between her thighs, or having her bent over your desk in some obscene position with her mouth stuffed by her ruined underwear and screaming through it.

With everything that’s transpired today, one would think you’d call it early and pack up. Not you though. Not even an hour has gone by since your close call, and Arin is in your office again, sucking you off underneath your desk while you work on grading papers—at least you should be, if only you could focus for more than a few seconds without this warm mouth slobbering on your cock.

"I bet none of your other students can deepthroat you as good as I can."

"You said you were going to be quiet."

"And you said you were going to fuck me, professor."

You haven't exactly broken that promise, it's more like Arin decided she wasn't going to wait until you finished, always finding an excuse to get in her favorite position whenever she wants to suck you off.

Luckily, for your students, you're going to be in such a tremendous mood after finishing in this girl's hungry mouth. These papers are downright horrendous—so fucking awful and unreadable it makes you wonder if you should intentionally pound Arin in your office with the door wide open, just so you’ll get caught, lose your job, and never have to deal with some of these students ever again.

Not even a few papers in and you’ve lost every ounce of focus, groaning while Arin empties your balls, her mouth right at your base when your spills right down her throat. With your fingers gripping the back of her head, it's impossible to not avoid bucking your hips into her pretty, sloppy mouth as she drains each thick shot from your pulsing cock, swallowing it all with pride to make sure there's not a single trace of your creamy release that hasn't gone directly into her stomach.

"All those students probably failed anyways," she tells you, letting the saliva fall from her lips as she shows off her empty mouth with a pleased smile, planting a nice, loud wet kiss on your tip before getting back up to her feet.

"Yeah? Including you?"

"Of course not, professor. We both know before you even look at my paper that I've got a perfect grade."

"Is that so? And what have you done to deserve that, Yewon?"

Before you've even gotten your pants back on properly, Arin is already claiming a spot on the edge of your desk, undoing her tie so that it hangs loosely around her neck, and then spreads those luscious thighs as wide apart as they can go, her gorgeous, dripping pussy on display without any underwear in the way. "I can think of a few things. Doesn't emptying you down my throat count for something?"

"Hm, I dunno,” you ponder, shamelessly staring between those delectable thighs at what’s all yours. “Maybe a few points. That'll get you a passing grade at best."

"Just a few? What about all the times I've ridden your cock this week alone, professor? And how many times did you cum inside me?"

"I've completely lost track, Yewon. I guess that'll get you at least ten percent higher."

"How generous of you," she retorts, tone all full with playful sarcasm, unbuttoning her white shirt enough so you can see the color of her bra. It's purple, just like the thong in your pocket that serves as a nice trophy. "Are you forgetting how many times I took your thick cock in my ass until you blew your load inside?"

"Does that really count if you beg me to do so every time you step in my office?"

"Oh no, you can't blame me for how much you love my ass, professor. That's at least twenty points."

"That's a little greedy, don't you think?"

"Absolutely not. If anything, I deserve extra for all those times I let you fuck my face," Arin suggests, spreading her legs further apart to give a clearer view of her bare cunt that’s glistening so beautifully, accompanied with a set of fingers teasing herself for your benefit.

"Again, you're forgetting the part where you keep dropping down to your knees and begging for it."

Arin can't help but smile, both at knowing you're right—and also how you can't take your eyes off the show her fingers put on when she rubs at her clit, getting wet so easily from playing with herself while staring into your eyes. It's the look on your face that drives her crazy and gives her the urge to show off even more, sliding two digits past her swollen lips into her tight hole, so eager to get herself off in front of you.

"What about now, profess—" she asks before a moan interrupts her words, leaning backwards to prop herself up so you can watch every bit as she fingers herself. "Does this count for anything?"

"It depends. If you can make yourself cum without my help, then maybe, that'll bump up your grade, Yewon."

"Twenty-five. For making myself cum right in your office," she manages between hitched breaths, pumping her fingers deep in and out, almost bucking her hips off the table at her own touch.

"Twenty. You're not there yet, Yewon," you correct, watching Arin roll her head back with her eyes shut, so beautiful when she's in bliss, achingly sexy how her slender fingers disappear knuckle deep into her own cunt. You've barely had any time to recover since emptying your load down her throat just a minute ago, but the mere sight is more than enough to have you as hard as the wooden desk she’s writhing on.

Arin reaches down to further unbutton her shirt, giving the full glimpse of her breasts covered up in that pretty lace as her tight frame falls back against the cold surface all splayed out. While this shameless girl continues fingering her pussy, you simply enjoy the view, stroking your cock every few seconds to spur her on. Every desperate moan and gasp from her lips gets louder, all that nectar trickling down between her spread thighs you’re dying to lick clean—but you won’t, because she has to do this on her own.

You let the lack of words exchanged linger in the air while Arin fingers herself a bit rougher, moving a bit more frantic, knowing all the signs from experience that she isn't too far from that much craved release.

“Professor," Arin breathes out, the quiver in her voice an obvious indication. Her fingers get so drenched, pulling them out from her heat for a moment to reveal how sticky wet they are as she groans, not bothering to hide how she slides them back in to curl right into herself. "Oh god, professor—“

When the pleasure becomes too much, when her back arches off the desk with breathless cries, there's no missing the split second Arin's entire body tenses up—thighs quivering, fingers buried so deep you can hear the wetness while she shakes on the desk from the intensity of her orgasm. It's a moment of euphoria that's only reached because you're watching so attentively, eyes glued the entire time as she rides her fingers long past completion, toes curling, moans echoing through your small office.

Even when Arin is finished, she's unable to regain her composure for more than a few ragged breaths, eyes still closed while the bliss hits hard, long after her high. And you savor every second of her looking so beautiful in this post-climax haze, an absolute mess on your desk that you’re thankful hasn't soaked into your papers.

"Fuck, that was too good, professor," Arin murmurs, slowly pulling her fingers out from herself, just to rub her oversensitive clit, borderline crying from the overstimulation. “It’s too bad it wasn’t your cock I came on.”

"Then maybe I should deduct points for that?"

"Hey, that's not fair… you just told me—I’d get points for making myself cum."

"I did, but—you would have earned extra for waiting for me to do it. Guess you'll just have to earn back those points another way."

"How exactly should I do that, professor?" Arin asks with the best faux ignorance possible, sitting herself up to scoot off the desk, then leaning down to wrap her slick fingers around your shaft. "If you bend me over and pound me with this cock until your cum is leaking inside me, would that be enough?"

"Perhaps. That would certainly help raise your grade some points.”

"Give it all to me then," she pleads, giving your cock a handful of languid strokes, just enough to leave a nice trail of her slick along the entire length. "Fuck a load into me, professor. Fuck your top student all over this office."

"Top student? Really?" You can't help but laugh at that, knowing full well Arin is certainly anything but. Far from it actually, not even top ten. "Then I better go find her then."

"Hey! Just shut up and give it to me already," Arin says with that pout still intact, keeping these strokes going on your cock that make you throb so easily, and you’re not sure who needs it more at this point.

"Fine, but not here. I'm tired of this place. Let's go somewhere else."

It's rather late into the afternoon, with the majority of classes for the day having ended already. That leaves enough of the campus vacant, lowering the risk of getting caught wherever you decide to take Arin—but the risk still isn't zero. Wandering around the university after hours isn't the best idea, especially when there are plenty of places for students to hang out, and worse, faculty offices open late.

So you keep it simple.

You keep several feet ahead of each other, heading up a couple floors to that really small bathroom by the science department that no one ever uses because it doesn't lock properly. There are much bigger and better bathrooms scattered about, so everyone usually forgets this tiny, shabby thing exists, especially late into the day. Not the most romantic spot, but it’s suitable, and keeps you from scouring the halls without having to dodge other faculty and students.

You enter first, flicking on the light, and do a quick scan around the room while Arin slips in, pulling the door shut as quickly as possible. There's nothing but a toilet, a sink, and a mirror, but most importantly it looks clean, which is the most important thing. It's not that surprising given that nobody really uses it to begin with.

It’s as perfect a place as ever.

Double checking the lock still doesn't work, nothing has changed on that front. Arin quickly moves to lean against the wall, and she’s already unbuttoning her shirt, all the way this time, to give the full view of those perky breasts without any bra to ruin the view. You're on her in a flash, claiming those lips with a kiss full of nothing but aggression to match just how badly you want to ruin this girl right now.

"Fuck me," Arin urges as she palms your bulge through your pants, impatient to get your cock inside of her. Her fingers fumble with the button to your pants, thoughts clouded with desire, and she’s so eager to release your aching shaft, to give it all the attention it so desperately craves.

You’ve got just a modicum of patience left to not let that happen quite yet.

Instead, with your lips still attached, you pick Arin’s slender frame off the ground, and guide her over to the sink, placing her there as gently as you can. When she settles down on the edge of the counter, there's no hesitation to shove that tiny skirt up past her waist, revealing her absolutely beautiful cunt still left glistening in the aftermath of her orgasm from a moment earlier, and you're just dying to fill her all up.

Still, somehow you hold back for a moment, to let it all sink in. The sight is divine enough, this privileged student of yours in this rather pathetic excuse for a school uniform, half naked, shirt wide open with her tits fully out, that barely-there skirt, and those sexy thigh highs that bring all the attention to her immaculate thighs that make you want to ruin her even faster. She knows that’s your biggest weakness, knows how weak in the knees they leave you whenever you get to slide them off with your teeth—but now they make her look like pure sin.

"I know you wanna get that dick in me," she says, voice so sultry, and her thighs spread obscenely wide apart, so that every inch of her mouthwatering cunt is put on display with not a drop of modesty—not like Arin even knows what that word is.

"Not yet. Haven't gotten to taste you today." As per usual, Arin’s been more than a little greedy, and it feels like she’s had her lips on your cock all day and this is the first opportunity to return the favor.

Any protest in those pretty eyes doesn't last when her hands wrap around your skull, drawing your face straight between her thighs that you have no trouble diving into. With your lips feasting on her cunt right off the bat, you give Arin all the attention she craves so badly, licking along the length of her slit, all the way up until your tongue starts flicking at her engorged clit.

"God, so fucking good," Arin breathes out, the silence in the empty bathroom getting cut with all her beautiful moans that ring out. For your efforts, you’re rewarded by her thighs locking around your head, as your lips get a tight seal around her swollen clit that has her grinding that delicious cunt all over your mouth.

"Professor!" she chokes out, while continuing this harsh grip on the back of your head while you slurp on her clit so mercilessly, every bit hungry to taste all those delicious juices that spill out. "Oh my god, professor, oh fuck!"

Your mouth doesn't quit, because nobody tastes better than Arin. You're an addict, every bit obsessed with this girl's cunt since the first time that you slid between these thighs. There's nothing you love more than this, her taste lingering on your tongue, all while these delicious thighs squeeze around your head, suffocating you perfectly as you eat her out with so much fervor she almost can't handle how good you make her feel.

"My god, Yewon—you taste so fucking delicious," you tell her between long licks, slurping on her clit without restraint to savor every last bit of her soaking cunt. "I can eat your pretty pussy all day. For hours and hours."

"I won't say no to that, professor.” Her desperate hands dig into your scalp to hold your face right there, exactly where she wants, where she needs, gasping when her hips grind down against you. "Fuck, your tongue is so, so good."

This is your favorite part about going down on her, being trapped between those perfect thighs that squeeze and tremble while you sloppily eat her out, drowning in her heavenly aroma and all this nectar, her delicious pussy that tastes even better the longer you indulge.

It's never enough though, no matter how much time you get to spend with your tongue buried inside her cunt, or how many times she cums all over your face—the taste of her is heaven, and you love turning this girl into nothing more than a whimpering, quivering mess who can’t even think straight.

"Just like that, professor, fuck, don't stop, oh my god, don't fucking stop, please—“

She whines so freely while grinding down hard against your hungry lips you can hardly breathe. Not that you have any problem about that, because you know exactly where Arin is, can feel those thighs vibrate all around you to know those limits are about to be surpassed, and you don't plan to let up for even a moment.

You ramp up your efforts in devouring her cunt without a moment to rest, your tongue all over her clit, sucking so harshly, so relentlessly, drowning in these delicious juices. It’s obvious how Arin's hips can't stay steady for a second longer, seconds from losing herself entirely. "Professor! Fuck, I'm so fucking close. Keep going, keep—oh fuck, right there, I'm gonna cum so fucking hard, fuck—"

Arin bucks her hips into your face with wild abandon, her juices smearing across your lips when you bring her to the verge of release, until she finally topples over completely.

Everything goes muffled while she keeps her thighs squeezed tightly around your head, violently trembling throughout her orgasm as you lick her through the entire thing. Like every other time you've brought her over that blissful edge, it's beautiful, turning your face into a mess, and you greedily lap up everything that freely spills into your mouth from her overflowing cunt.

When those thighs let off and relax, you look up at Arin's blissed out visage, completely enamored in the pleasure, shivering and trembling with a high-pitched squeal as you give her clit one more loud slurp for good measure. Your focus then shifts back to her messy folds, delving deep into them to clean up those juices she's gushing so profusely, a never ending stream of wet, sticky deliciousness.

"Fuck, your cunt always tastes so amazing," you mutter, lapping at the girl's slick covered thighs, getting out every drop that leaks out with a few soft licks. Arin stays motionless on the counter, looking straight up to the ceiling while her chest heaves, still seeing stars.

After indulging a little while longer, and spending all the time necessary getting those warm thighs mostly clean, there's only one thing left to do. Your mouth pulls away, but only so you can yank your pants down to your ankles, your stiff cock aching to get inside of her.

"Gonna fucking ruin you, Yewon. Hope you’re ready for me to wreck that tight little cunt."

"When am I not? Please, give it to me already," Arin desperately pleads, pulling herself from her haze to look at the throbbing length you're stroking as her eyes beg you to sink in and fill her up.

Sitting herself up on the sink, she keeps herself propped up with her hands planted behind her body, spreading her thighs apart as far as possible, with her wet cunt presented so lewdly and invitingly. "Shove that dick right in me, professor. Give it to me as hard as you can."

Without another thought wasted, you slowly guide the swollen tip of your cock past those drenched lower lips, groaning unabashedly when all this slippery warmth welcomes you deep inside. It's far too easy, how you slide into her, walls so dripping with arousal that allow this ache to dissipate when you effortlessly impale Arin all the way, right to the hilt.

"My god, Yewon, fucking love this tight pussy," you groan as her walls clamp down, holding you right inside that delicious grip with no plans to release you.

She's so soaking wet when you start pounding away inside, each thrust coated in all those messy juices as your cock bottoms out every time. Your deep strokes make full use of her open shirt, causing her modest breasts to bounce as her back hits the mirror with each hard slam. Arin clenches around you with such an unyielding grip as you pump in and out, loving how rough you are, how forceful your hips are, moaning louder and louder, still sensitive from the previous release.

“And I love being stretched on your huge fucking cock.”

There's not an ounce of mercy in your thrusts, just pure carnal lust taking hold. Her wet folds remain parted, taking the full length of your pounding shaft, every last inch driving into that slick little cunt without restraint. You take advantage of how her legs drape over the sink, grabbing her thighs, spreading them to give you more leverage to angle your thrusts deeper, and she kicks her heels off to give you even more control, allowing you to use her body however you please.

"It feels so good, professor," she says, while each thrust stays rough and deliberate, buried to the hilt in her wetness. "This cock of yours—is so perfect."

"That's because your cunt is made for it," you groan, sweat forming on her skin under your grip as your hips slam against her. It's absolute bliss, watching the way her entire body responds each time you sink in, hearing her soft whines that she’s unable to hold any back while getting fucked so mercilessly over this counter top. "You take my cock so well."

"Of course I do," she insists, the biggest grin on her face that gets interrupted with more moans. "I'm the professor's favorite student, after all."

"But definitely the worst one," you fire back, fingertips digging hard into her bare thighs all wrapped up in these sexy thigh high stockings as they jiggle with every relentless thrust.

"So—how many points is this?" Arin asks, bracing herself against the mirror when you pound into her even harder, every inch of your cock covered in her sweet essence.

"As many as you fucking want, Yewon."

"Then make it a thousand. I can use them on the next assignment, right?"

"Use them on whatever you want, the final exam even. So long as I get to cum inside you."

"Of course, professor. Fill me all the way up. Cum inside me as much as you fucking want," she says, and those tits bounce more hypnotically every time you pick up the pace, slamming deeper with more force each time. After every plunge balls deep, that tightness becomes more overwhelming, urging you to give your all, as if the sight of her all sprawled out and creaming on your cock isn't enough already.

It's merciless. And your hips start to reach their limit, but Arin's desperate cries of pleasure become so loud, that she has no choice but to muffle herself with her hand, almost forgetting that this seldom used bathroom is still right by the science lab—and anyone could be lingering around.

"Fucking fill me, professor. Empty your balls. Just keep—oh god, fuck, fuck," Arin whimpers, the limits of her body creeping up fast as your cock pistons so harshly in and out of her hot cunt. "Wanna milk every last drop right out of you, make you cum so fucking hard."

"Only if you’re good and cum on this cock, Yewon. Cum all over me, and I'll fucking fill this cunt up."

"Yes, god, yes," she says, practically falling back against the mirror while you brutally hammer into her at full force. She barely keeps the coherence when it all peaks, when you feel those impossibly tight walls clenching around your cock, borderline painful, forcing you to use every ounce of strength to not burst inside her just yet.

"Fuck, professor, this dick is so amazing—I'm gonna cum all over it, all over your fucking huge cock," Arin says as her pussy squeezes the life out of your cock with every impale in that wet, intoxicating heat. A flood of her fluids almost forces you out, an absolute mess that drowns your shaft in slick rips through her body without any care, and all you can do is fuck her through it.

Even when her orgasm subsides, and she somehow becomes tighter, wetter, easier to sink into, you don't show any remorse while fucking her tight pussy until you can't possibly hold on any further.

"You're close, aren't you, professor?" Arin gasps between collecting her breath as the pleasure begins to fade, watching the struggle you're going through to hold it back. "I know you are. Please, let me have all that cum. Blow your fucking load in me, let it all out."

That's all you need to be shoved straight over the edge, taking a few final strokes before that pressure builds up to a boiling point, and nothing’s going to stop you when you’re about to burst. “Yewon—“

Her name barely escapes before you’re throbbing, letting out all types of lustful grunts while her pussy smothers you in warmth, offering the best place for such a messy release of seed that shoots out, coating her insides the way she begs for.

Your cock violently pulsates until you’re left with nothing but orgasmic relief, unloading shot after shot deep inside Arin with the thickest spurts imaginable that empty into her warm little pussy. These tight, tight walls take every drop, welcoming such a huge load that’s even somehow stronger than what her mouth did to you earlier.

There’s no way you could do anything else with how delicious she looks on this bathroom counter. With whatever remnants of energy are left, you use all the power in your hips until they lose steam, remaining inside her euphoric cunt that refuses to relinquish you. You ride out wave after wave, each spasm pumping more cum into her, all this intoxicating bliss that feels like it’ll never end.

And truly, both of you wish it never would.

“Professor…” Arin can barely speak between breaths, riding this collective high that fills the room with heavy panting, and sweat glistens on whatever bare skin her revealing outfit offers. You’re right there with her, caressing her thighs, her messy cunt wringing out as much out of you as possible, like it doesn’t want your cock to escape, even after your entire load is buried inside that delicious warmth.

“Came so hard on you, professor, fuck... I love the way your cum feels when you push it deeper, all the way into my womb. Wanna keep it all here until you’re ready for round two.”

"You're fucking insatiable, Yewon," you sigh, dropping Arin's legs back onto the counter, which relinquishes the intense grip you’ve held, allowing her body a chance to relax. When your breathing returns to something somewhat stable, you lean over to give her a tired kiss, one that’s easily returned with whatever remaining energy she has.

“Can you blame me when your dick is this good? It’s only your fault I turned into such a greedy little cumslut.”

“Or maybe you were already like that before I even met you…"

"Yeah. Maybe."

Arin looks away as she starts to giggle, giving you a perfect chance to kiss that exposed cheek. When she glances back, you share an impossibly long stare, one that goes on far too long without words until you lean in for another kiss—

One that gets interrupted by a knock at the door.

"Hello? Is anyone there? Custodial services, I'm here to clean up."

You must have angered some kind of god for this to happen two times in one day. Even worse, there’s no easy way out of this while you're still buried inside Arin, the least of your concerns as this creamy mess threatens to spill out.

"I, uh—need a moment. Spilled something on my shirt that won't come out. Be out in a bit," you blurt out, barely thinking while you look around at the poor bathroom that's been defiled. Arin can't help herself, covering her mouth to help from not immediately bursting into laughter as she fumbles to button back up her shirt.

“You’re such a bad liar,” Arin whispers, but you just roll your eyes at her, glancing over the sweat on her body that you’d no doubt be licking clean were the two of you not nervously waiting to see if this unfamiliar man outside will buy your story.

"No problem, sir. Take your time, I'll be back after.” The janitor shuffles his feet, and you listen carefully, wondering just how obvious the two of you were being. When you can no longer hear footsteps, you release the longest sigh, and slowly pull out of Arin, along with an utterly unreal amount of hot semen that spills out.

"Can't believe he bought that," Arin sighs while hopping off the counter, where more of your cum gushes out as soon as she stands up. "Can't believe you came so much inside me, either."

"If I recall, you were quite literally begging me not to stop."

"No need to be smug about it, professor."

Arin does her best to look presentable in the mirror and fix her disheveled hair, shirt only half buttoned, and skirt a complete mess, but it all seems so futile. There's no real way to hide how she looks after getting railed over the sink relentlessly, or the cum still dripping all over her thighs that she doesn't even bother to clean up.

"We should get out of here before he comes back," Arin says after giving her appearance a once-over, making any minor adjustment to try and fix how ruined she looks. "Shall I leave first, professor?"

The question has only one obvious answer, but you still can't form your lips properly to speak it. "Not so fast, Miss Choi."

"Oh? Am I forgetting something?" Arin asks while running fingers through her hair again. You step towards her, pressing into her back to wrap your arms around her tiny frame before planting a kiss on the side of her neck.

"Yeah—me. You're not leaving this room without me."

You notice her grin in the mirror as your lips graze her skin again, nipping right on that sensitive spot that makes her gasp.

"Don't tell me you're wanting to go again. After we almost got caught. Again—"

"No, not yet," you say between kisses, drawing closer and closer up her neck. "Need a little bit more rest for that."

"You poor thing. Did my pussy wear you out that much, professor?"

"You can barely stand upright as it is," you retort, taking your mouth away from her neck for a moment. Arin stifles a laugh that turns into a moan when your hand creeps up her skirt to touch her dripping folds still leaking your cum. "You need this a lot more than I do."

"Is that so? Well—fuck," Arin moans, unable to hide her body betraying her words as she grips the edge of the counter when two of your fingers slide into her without warning, pushing a mixture of her nectar and the load you pumped inside deep into her messy cunt.

"It's too bad I can't continue this," you say, and withdraw those fingers from Arin's clenching pussy that so desperately tries to keep them in to no avail. "Let's get out of here. But you're not leaving my side."

"If you insist, professor." Arin has no further words, fixing up her skirt while so much thick seed oozes beneath. "But isn't it a little risky to leave together?"

"Probably. But besides, even if somebody does see us, so what? There's not much they can do about it even if they can already tell what just happened. And what are you always saying—how much you love the risk?"

"Guess I'm rubbing off on you, hmm?"

"Not a chance, Miss Choi," you correct, causing that grin across her face to grow wider. "I'm just tired of sneaking around so much."

"Me too, professor."

You turn to leave, opening the bathroom door to poke your head around the corner. Luckily, there doesn't seem to be anyone around, only a couple of students you don't recognize standing nearby chatting, paying no mind as you and Arin sneak out successfully together.

“Where are we headed?” asks Arin as she settles in right next to you, something that's going to take getting used to.

"Dunno. Cafeteria is still open. Guess we can head there first."

"Not if it's still raining. It's a bit of a trek, isn't it?"

"My car's right out front. And if we so happen to take a little detour..."

"Now who's being insatiable, professor?" she asks, with this little teasing giggle in her voice.

“What? Who said I planned on doing anything with you other than grabbing some dinner? You know, I don't think you've had anything in your mouth today but my—"

"Professor!" Arin's not used to your conversation being this open, or being on the opposite side of being so flustered. "Save it for when we're not outside! Or better, the back seat. With the doors locked, preferably."

"As you wish, Miss Choi. Besides, but there's nothing I rather eat than your—"

She desperately covers your mouth to stop any further words from escaping as you head to the parking lot, surprised to see there's nothing but abundant sunshine now. Even more surprising is the fact nobody looks twice as the two of you walk together. Maybe it's luck, or maybe everybody here knows damn well what happens on campus between you two.

And maybe you'll stop sneaking around campus every day, finding just enough time to spend the last half of your lunch hour buried between Arin’s thighs while she tries to hold her moans.

But maybe you won't.

#kpop smut #reader insert #arin smut #oh my girl smut #girl group smut #kpop fanfic #male reader #kpop fanfiction

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