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gimmethatagustd · 2 days

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like a river | kth + myg + knj

As the only omega professor in the Department of Philosophy at Seoul National University, Yoongi is accustomed to dealing with pretentious alphas who think the world revolves around knots.

○ Pairing: Taehyung x Yoongi x Namjoon

○ Rating: Explicit/18+

○ Genre: A/B/O, college professors au, coworkers to lovers (?), smut

○ 14 / 100 Drabble Challenge (Academic)

○ Word Count: 3,761

○ Warnings: Unprotected anal sex, blow job, heat sex, knotting, light dom/sub vibes

○ Notes: Please don't read this unless you genuinely like A/B/O fics; otherwise it could be too much for you. I'm warning you in advance. I'm not responsible for your Tumblr experience :)

○ Post Date: May 12, 2024

○ Masterlist | AO3 Crosspost

○ What was Jai listening to? River - Bishop Briggs

Yoongi’s heat comes early.

He’s flipping the page of a thick, leatherbound textbook in the University’s library basement, where the archives are when his damp fingers stick to the page. Sweat beads along his hairline, breaking up the gel that once held his hair out of his face and letting a few dark strands fall across his forehead and into his eyes.

Slowly, Yoongi closes the book and parts the space on the shelf where he needs to slide it back with the other alphabetized philosophers’ texts. It’s been nearly three hours since Yoongi visited the archives with his fellow professors to collaborate on changes to the next academic year’s curriculum. They all need to come to a consensus on which books to include in the senior year capstone project syllabus. It’s hard enough to find an agreement in a department of fifteen alphas, two betas, and one omega without going into heat in the middle of their research.

It’s fine. Yoongi is in his mid-thirties; he has dealt with unexpected heats before.

None were as sudden as this, though, and none came at such an inconvenient time.

Yoongi hears a few of his colleagues bid their goodbyes from the opposite side of the room as they exit to take the stairs to the ground floor. Three hours is too long; looking at his phone, Yoongi realizes the library closed nearly an hour ago. Perhaps he’ll get lucky, and none of his colleagues will be here by the time he finishes packing his things.

Yoongi is unsteady when he walks down the aisle; his body feels heavy, and his muscles are weak. His heat shouldn’t have hit him so suddenly. Yoongi meticulously tracks his heats to accurately predict the exact time of day they’ll hit. He doesn’t believe in suppressants, thinks they’re utter bullshit, just one more way for alphas to control omegas’ lives. He lives naturally and keeps a log religiously. There’s no reason for this to be happening.

By the time Yoongi reaches the corner of the room where he had left his belongings on one of the study desks, his dress shirt is soaked with sweat. Dark red splotches are at his armpits, and a short, thin line at his sternum along the shirt buttons.

Thankfully, packing takes little time. Yoongi shoves his laptop and a few books into his worn leather satchel and slips it over his shoulder. His knuckles turn white from how tightly he squeezes the strap, and he drags his fingers along the wall to steady himself as he walks the perimeter of the room. The book titles and hangul headings on each aisle blur from the burn of sweat falling into his eyes. Using the back of one hand, Yoongi wipes the sweat from his forehead and exhales slowly through puckered lips.

The exit is five exhales away. Yoongi makes it to three exhales before he chokes on the next one and is inundated by the earthy scent of cedarwood and cardamom that leaves a bitter aftertaste in the back of his throat.

"Oh! I didn't realize anyone else was still here. I don't think I've stayed in the library this long since—Um, are you okay, sunbaenim?"

The alpha sitting at a table to the right of the exit is one Yoongi has done his best to avoid the entirety of the academic year, not by any fault of the man himself. Taehyung is one of the few tolerable alpha professors in the department. Young and fresh out of graduate school, he's promising as a professor despite his reviews being skewed in his favor because most of the student body has a crush on him. Yoongi may as well be a blushing college student because Taehyung's big brown eyes and sharp jawline make him want to stay as far away from Taehyung as possible.

"Y-Yes, just, uh," Yoongi fumbles over his swollen tongue, which feels dry in his mouth. "I'm just turning in for the night."

He prays that Taehyung lets him be. The exit is right there. All Yoongi needs to do is take a few more steps past the table, and he'll have his sweaty hand wrapped around the doorknob. The longer he stands here with Taehyung scrutinizing him, the less time he'll have to get home before he turns into a pathetic, sex-crazed monster.

Usually sweet, Yoongi's citrus scent turns bitter with his distress when he remembers he didn't drive to work today. He'll have to use public transportation to get home. No matter how strongly Yoongi rejects the sexist narrative that omegas are more vulnerable than alphas and betas, even he can't deny how unfavorable it would be to get on the train at night at the onset of his heat with strangers.

"Sunbaenim…" Taehyung takes a step toward Yoongi, who then takes a step backward. "You… your heat."

Taehyung audibly inhales, and shame creeps up Yoongi's chest, turning his neck and cheeks bright red, burning him like wildfire because the look on Taehyung's face makes him slick.

"It's fine," Yoongi whispers, and it most certainly is not fine.

When his thighs hit the edge of a table, he lets go of his satchel's strap to reach behind him. In his nervousness, he backs himself across the aisle from Taehyung's table, though Taehyung follows him with timid steps and rounded eyes.

"I don't mean to be rude, sunbaenim, but I don't think it's safe for you to go alone in this state."

Taehyung says more, but Yoongi doesn't pay attention. Taehyung's voice warbles and morphs into the muffled sound of someone trying to speak underwater, and all Yoongi can do is hone in on how pretty Taehyung's fingers are when he glides them through his caramel hair and how veiny his forearms get when he folds the sleeves of his white buttoned dress shirt to talk with his hands. Unlike Yoongi, who is short and soft around the edges and along his creases, Taehyung is tall and lean. His shoulders are broad and his hands large, and the swell of his biceps against the tight sleeves of his buttoned shirt is too much for Yoongi to look at.

Yoongi hates alphas. He hates how narcissistic they are and how they dominate every space they're in. Even now, he hates how Taehyung's scent is comforting and tantalizing, coaxing Yoongi's omega out of him and triggering his heat to barrel into him with the weight of a freight train.

Most of all, Yoongi hates the person his biology turns him into when he's around a pretty, big alpha like Taehyung.

"Just help me, okay?" Yoongi snaps from the exhausting headache building from the blood pounding in his skull.

"Of course, sunbaenim." Taehyung's eyebrows shoot up, but he's gentle as he grabs the strap of Yoongi's satchel and takes it off to hold it himself. "I'll drive you home. I just need to stop by my office first. Do you think you can—"

"No," Yoongi whines and hates himself for it, but he can't stop himself.

"No, you can't wait? Or—"

“Help me, Taehyung-ah.”

Taehyung's face maintains its innocent look of concern, but his ears turn bright red once he breathes in the ripe scent of Yoongi's slick, and the meaning of Yoongi's demand washes over him.

"You want alpha to help you?" Taehyung asks quietly, and Yoongi feels the deep rumble of Taehyung's voice reverberate violently through his body, weakening his knees.

Yoongi's heat isn't forcing him to whimper a tiny "yes"; his attraction to Taehyung goes far beyond animalistic instinct. Apparently, Taehyung's does, as well.

"Gonna take my knot, omega?" Taehyung runs his long fingers through Yoongi's sweaty hair, gathering it in a makeshift ponytail and tugging Yoongi's head backward so he's forced to look into Taehyung's eyes. "Is that what'll make you feel better? Is an alpha's knot going to fix you?"

Taehyung's condescending tone, paired with his sudden harsh grip, makes Yoongi gasp. Though Yoongi's heat makes him lightheaded and lethargic, he has enough energy and wits about him to be irritated by Taehyung's comments.

"I don't need a knot," Yoongi demands through gritted teeth when Taehyung tightens his grip on his silky hair. He and Taehyung both hear how unconvincing he sounds, especially when Taehyung reaches around to squeeze his ass, and Yoongi instinctually presses back against his hands.

"It's okay, sunbaenim," Taehyung cradles Yoongi's rigid jaw in his palm. With gentle strokes, he traces Yoongi's lips with his thumb, pressing on the center of his bottom lip and pulling down. "All omegas need a knot. You were made for it."

Yoongi knows Taehyung is wrong. He wasn't made for anything or anyone but himself. That's the problem with alphas; they think the world revolves around their knots. Yoongi has taken very few knots in his life and found that relationships with betas and other omegas are far more fulfilling.

He doesn't need a knot. He doesn't.

But then one of Taehyung's hands squeezes Yoongi's face so he can angle Yoongi's head to the side as he licks up a bead of sweat trickling down his temple. His other hand unzips his slacks, and Yoongi realizes he's got Taehyung's shirt twisted in his fists to pull their bodies together.

Maybe Yoongi does. He feels Taehyung's cock, warm and hard, against the inside of his thigh, and maybe he needs a knot.

"Are you going to be a good little omega for me, sunbaenim?" Taehyung asks, teeth clenching at Yoongi's bobbing throat.

More slick leaks from between Yoongi's cheeks, and Taehyung makes a show out of shoving his hand in the back of Yoongi's slacks to glide his fingers through it. Taehyung laughs when Yoongi trembles as he presses against his rim, just enough to tease but not enough to push through.

"You need to use your words, little omega. Be good for alpha, and he'll be good to you."

Despite his harsh demeanor, Taehyung's sparkling eyes look soft, and his grip on Yoongi's body is firm but gentle.

"I'll be good," Yoongi says with a sharp intake of air when Taehyung abruptly yanks Yoongi's pants down his thighs.

It doesn't matter that they're still on campus, still at work. Yoongi lets Taehyung help him out of his clothes, tossing them onto the floor with his satchel. He's very aware of the fact that Taehyung keeps his clothes on and only unzips his pants to pull his cock out. It makes Yoongi feel dirty and vulnerable, being the only one naked. If someone were to walk in on them, Taehyung could easily cover himself and leave, whereas Yoongi would be left scrambling. Taehyung could slip away, and Yoongi would lose his job.

Yoongi hates alphas and their need to hoard power, but he turns into a quivering mess when Taehyung grabs him by the back of the head and forces him to bend over the table with his cheek against the cold surface.

"You'll be good and stay quiet, won't you?" Taehyung asks as he dips his thumbs into Yoongi's hole and pulls, groaning at how wet and pliant the muscles are.

Yoongi says yes, but he doesn't mean it. There's no way for him to regulate himself when Taehyung slowly eases his cock inside him.

The moment the thick head pushes through his rim, Yoongi's mind goes blank. He's so worked up that his heat is all-consuming by this point. Yoongi knows he's babbling as Taehyung thrusts into him because Taehyung shoves his middle and ring fingers into Yoongi's mouth. He presses down on Yoongi's tongue, making drool gather at the corners of his mouth but effectively keeping him quiet since all Yoongi can do is moan around his fingers.

"That's it, omega, suck on them and keep quiet," Taehyung murmurs as Yoongi wraps his lips around his fingers.

Taehyung gets in a few deep, long thrusts when the door leading to the stairs opens.

Yoongi, whose eyes had been squeezed shut with pleasure, immediately opens them and tries to get up, but Taehyung keeps him pressed against the table. Panic tickles the edges of his mind, but he doesn't really feel it like he should, can't truly grasp it when Taehyung's cock is fat and warm and so close to filling Yoongi up with his knot.

For a moment, Taehyung's hips slow to a stop. Not driven by hormones like Yoongi, Taehyung likely feels the panic of getting caught hit him full-force. That is until he realizes who has joined them.

Yoongi would recognize the other alpha's scent anywhere for how rich and creamy it smells, like freshly made chocolate, still warm. A fellow professor who has also crossed Yoongi's mind more than once, Namjoon is slightly more tolerable than Taehyung, mainly because his alpha arrogance is at least rooted partially in how much of a confirmed genius he is. Not that Yoongi cares about any of that with a dick up his ass. He's still trying not to panic. Although his heat loosens him up a bit and helps him let go of some of his inhibitions about sex, it's still difficult to completely accept that this is natural. Yoongi doesn't want to succumb to the need for an alpha's knot, but he knows he should give in to the instinct — especially if he has someone as handsome and giving as Taehyung to help him through it, if only for the night.

And then there's Namjoon, poor Namjoon, with his mouth hanging open and his tan cheeks turning rosy.

"Holy shit," Namjoon says weakly, his dark eyes flitting between Taehyung and Yoongi. "I came back because I thought I left my wallet. I tried calling you, Tae, um…"

Namjoon trails off, and Yoongi is sure they all think there's no point in explaining anything. Namjoon is smart. He can pick up on Yoongi's scent and understand why he's sweaty and slicked up, and Taehyung's fingers are shoved down his throat.

"Our sunbaenim needed some help." Taehyung's explanation is as half-assed as Namjoon's, and it's still too much.

Yoongi feels silly, pressed to the table with nothing to say and no way to say it anyway, even if he wants to. If it wasn't for Namjoon's embarrassment, Yoongi would be mortified to be caught in this position.

"You're not going to say anything to anyone, are you, hyung?" Taehyung asks with a cocked eyebrow. It doesn't look threatening, but it isn't the usually friendly demeanor Taehyung has.

Namjoon quickly shakes his head. "No, no, of course not..."

To Namjoon, who is barely keeping himself together, Taehyung's behavior probably does seem threatening. His eyes keep falling to where Taehyung and Yoongi are connected, no matter how many times he tries to keep his eyes on their faces — on Taehyung's face because Yoongi's face looks too pornographic, twisted in pleasure despite how nervous he is.

When Taehyung notices, he gives a little thrust, gently grinding against Yoongi's ass. Yoongi can't tell if he's purposefully grinding into his prostate, but he hits it every time, making Yoongi moan. He tries to grab the edge of the table to have something to hold onto, but his arms aren't long enough to reach. Taehyung jostles him forward, then eases him back, just to snap his hips into him again.

Yoongi should do something. He feels like he should, or at least say something. Anything at all. But he slowly realizes that he doesn’t want to. He hasn’t been with an alpha in so long that he’s wondering if he simply forgot how good it feels to be cared for and used. Taehyung fucks Yoongi because he feels good, so pliant and wet and a whimpering mess lying there to be taken, but he’s also doing it to make Yoongi feel better, to take the edge off his heat so Yoongi can get home safely without attracting unwanted attention or hurting his omega’s feelings by ignoring his instinct. The situation is mutually beneficial in that way; if Yoongi intellectualizes the whole thing, he can feel better about being fucked in the library by his younger coworker in front of another younger coworker.

The entire situation is insane, and all Yoongi can do is drool over it.

When Taehyung finally removes his fingers from Yoongi’s mouth, it isn’t to relieve him but to ask him a question.

“Sunbaenim, I feel bad for my hyung,” Taehyung says gently as he rubs his palms up and down Yoongi’s back. "He’s so hard.”

Still standing at the door, Namjoon inhales sharply, loud enough for Yoongi to notice it. When Yoongi looks, Taehyung’s observation is confirmed, though Yoongi isn’t surprised. What kind of an alpha would Namjoon be if he wasn’t turned on by what he sees? The erotic scent of heat sex alone would be enough to make any alpha feel the need to pop a knot.

“Oh,” Yoongi sighs, dragging his eyes from the apparent bulge in Namjoon’s pants to his narrowed eyes.

“Mhm. Don’t you think you should do something about that? Since it’s your fault?”

Yoongi tries to crane his head around to look at Taehyung, shocked by his question — accusation.

There's still a part of Yoongi that wants to tell Taehyung and Namjoon to fuck off because why is any of this his fault? It's not his fault his heat showed up early and unannounced. It's not his fault that Namjoon is horny.

Unfortunately, there's the natural side of him, the side that isn't burdened by social norms, gender roles, philosophy, and all the other bullshit in the manmade world. The natural, instinctual side of Yoongi wants to jump at the opportunity to pleasure and be pleasured.

So when Taehyung has Yoongi turn around to lie on the table on his back, he does so without hesitation. Once Namjoon approaches the side of the table next to Yoongi's face and follows Taehyung's lead by taking his cock out, Yoongi eagerly opens his mouth with Taehyung's encouragement.

"Such a good omega," Taehyung praises as he caresses Yoongi's face to brush his hair back as Namjoon feeds him his cock.

Namjoon lets his head fall back as Yoongi takes more into his mouth. He can't move the way he wants to, can only rock back and forth when Taehyung begins fucking him again, each snap of his hips jostling Yoongi and making Namjoon's cock slip out of his mouth.

It's overwhelming when Namjoon grabs Yoongi's head and begins to fuck his mouth, alternating how he thrusts into his throat with the frequency of Taehyung fucking his ass. They establish a rhythm, playing Yoongi like some sacred instrument only they know, spending the time to learn to do it properly.

Yoongi can hardly breathe. Taehyung pounds into him so hard that Yoongi feels like he fucks the air right out of his chest. It gets worse as Taehyung's thrusts become more aggressive, and he begins chasing his climax. When Namjoon's cock hits the back of Yoongi's throat, he drools and gags violently enough that it hurts, but his omega likes it.

"Shh, just, fuck, just a little more," Namjoon moans. He fists Yoongi's hair and squeezes, keeping a tight grip on him when his thrusts become more shallow. "Shit, I'm not gonna last."

"Knot his mouth."

Yoongi's eyes fly open, but he can't look at Taehyung; he can only hear his quiet laughter. Alphas and their fucking knots.

Yoongi hates them. He hates how good they feel, like now, when he can tell that Taehyung is close because his knot is starting to catch at Yoongi's rim. It burns as it grows, expanding so much that Yoongi wonders if his body can genuinely take it if maybe he's not deep enough in his heat for this — and then Namjoon reaches over to pump Yoongi's cock as he and Taehyung keep fucking him.

Their rhythm gets thrown off and messy, first when Taehyung cums with a final thrust that forces his knot inside and then when he makes Yoongi cum immediately after.

Rather than follow suit in the same manner, Namjoon pulls out to spill onto Yoongi's face, keeping one hand squeezed around his knot and the other quickly fisting over his shaft until there's nothing left, all of his cum painted across Yoongi's lips and the side of his cheek.

“Fuck,” Namjoon sighs and lets his body slump into one of the chairs surrounding the table, “Holy fuck.”

Namjoon shakes his head with a laugh of disbelief, and Yoongi hates how cute he finds his dopey, dimpled, fucked out smile to be.

Yoongi slowly turns his head until he’s staring up at the ceiling, and his neck is no longer twisted to the side. It hurts to swallow, but he’s terribly surprised by how satiated he feels, so content that he almost feels sleepy — despite Namjoon’s cum on his face, Taehyung’s in his ass, and his own all over his stomach and chest.

Disgusting. Yoongi has never been so sticky and wet in his entire life, and he likes it.

Taehyung looks just as messy, if not worse, than Namjoon, though the two of them combined can’t beat out Yoongi’s current state. Taehyung’s bangs are plastered to his forehead with sweat, and his shirt is tucked inward to avoid getting cum and slick all over the bottom half. Yoongi doesn’t even want to know what kind of story his reflection would tell him if he looked at his appearance. All he can hope is that he didn’t get bodily fluids on his satchel or the books they need for the semester.

At least Namjoon and Taehyung have the decency to clean Yoongi up. It isn’t the best job, considering all they have to work with are the paper towels from the shotty little bathroom in the back corner of the archives, but it’s better than sacrificing someone’s clothes to clean up the mess.

“Thank you,” Yoongi is quiet with his gratitude. The embarrassment and panic he missed before are now hitting him since the fogginess in his brain from his heat has subsided, at least for a little bit. “I, um, don’t really know what to say…”

“You don’t have to thank us, Yoongi sunbaenim.” Namjoon smiles sweetly, and Taehyung nods in agreement.

“Yeah, we just wanted to make sure you were okay.”

It’s a rather extreme way of doing so, but Yoongi did ask for it.

“I still don’t know where my wallet is, though…” Namjoon points out sadly, and Yoongi can’t help but bark a hoarse laugh.

“I can’t fucking stand alphas.”

Disclaimer: All my writing is fictional and for entertainment purposes only. None of these characters are meant to actually represent the real people mentioned in the stories.

All rights reserved © @gimmethatagustd - Do not copy, repost, modify, or translate any of my writing. Do not use my writing for any AI purposes whatsoever. Do not use my fics for anything aside from reading and commenting on them. My fics will only be posted on this Tumblr and on AO3 (gimmethatagustd & daddytaehyungie). Request an AO3 account here.

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