Work Text:
“Why the hell does no one know how to spell endorphins...”
Mika pushes the stack of essays into a neat pile, rubbing his eyes with the heels of his hands. The topic “Mating Habits between Alphas and Omegas” should be at least a little bit exciting, but his students seem to have a knack for turning any assignment into a long trudge through grammatical errors and run-on sentences.
Mika has been at this since his sex-ed class ended at 1:15 pm, and the sun has long since dipped below the horizon. A tiny desk lamp is all that illuminates the scribblings of Mika’s students, the words blurring into nonsense the longer Mika looks at them. Resigned to take a break, Mika sighs, leans back in his office chair, and cradles a mug of tea in his palm. His neck protests with a stab of pain as he lifts the cup to his lips and takes a sip.
The hot liquid, rather than soothing, settles an uncomfortable warmth down the back of his spine. He fans himself with a flap of his hand; the damn air conditioning must be out again. Teaching truly is a thankless job.
Essays fanned out in front of him, Mika catches a glimpse of slovenly handwriting poking out from the bottom of the stack. The name isn’t in view, but the few words Mika can make out— gentle, tender, loving —in the slanted scrawl of ink let Mika know exactly whose work it is. Letting out a sigh, Mika rolls his neck once and plucks the essay out of the bunch for further observation.
Mika has been concerned about this particular student—Yuuichirou Amane—for quite some time now. Not to say he’s a bad kid; quite the contrary. Poor performance in class aside, Amane is always present, always smiling, always engaged with the lecture to an acceptable degree. Mika might go so far as to describe Amane in class as a delight— if he grasped the material.
The first failed test was a warning, but the lack of comprehension shown in the subsequently assigned essays proved that intervention was needed. He really didn’t like calling students to after school meetings, but sometimes it had to be done.
After another sip of tea, Mika glances idly at the time. Soccer practice should have ended not too long ago; Mika expects Yuu to arrive any moment now. He shoves the rest of the essays into a filing cabinet and lays Amane’s essay in the center of the desk. Then, he leans over in his chair to retrieve a red pen from his bag. It will be necessary to point out where Amane should be improving.
The moment Mika bends over, sharp pain jabs in the center of Mika’s abdomen. He gasps before he can stop himself, but another twist in his gut follows the first. A deadly hot flush climbs all the way to the tip of his hairline; sweat beads on his forehead as his stomach continues to roil.
Though familiar, the feeling is entirely unexpected.
The search for a red pen is abandoned in favor of frantically searching for a neon orange bottle of prescription pills. Mika whines meagerly in the back of his throat as the warmth continues to build, but the telltale rattle of a pill bottle is absent as Mika digs in every crevice of his work bag.
But really, there is no reason Mika’s suppressants should be in there; he isn’t expecting his heat for another 3 days at least.
“Shit,” Mika hisses.
He leans back in his chair and swipes a hand down his face, clearing away the perspiration. Air conditioning aside, Mika’s office now feels sweltering as this discomfort slowly transforms into something far more urgent. Mika takes a long, shuddering breath, rolls his neck once, and begins packing up his things.
Mika is in no shape to be meeting with a student today. He will have to give his condolences to Amane tomorrow in class for missing their meeting. Right now, he has to get out of here, get home, and take his medicine before something goes wrong—
“Uh, hello? Mr. Shindo?”
Shit. Shit.
Mika is halfway out of his seat when Amane walks in, knocking lightly in the door as he passes the threshold. He has a duffle bag slung over his shoulder, cleats poking out of the place it won’t quite zip. For different reasons, a sheen of sweat covers his tanned skin where it is visible under the red and white letterman jacket. Mika can see moisture clinging to the tips of dark, messy hair as he runs his fingers through to tidy it.
“Sorry I’m late,” Amane says. “Coach made me help clean up the field, so—”
Amane cuts himself off with a choked noise. Mika also freezes in his tracks, the squat wooden desk the only thing to separate them. Mika knows the moment Amane notices the heat pheromones permeating every inch of the room. His eyes dilate almost instantly, and his breath heaves as he takes in the sharp scent.
Immediately, Amane begins pumping out his own pheromones in response. He’s young, but the thick, mouthwatering smell of a virile alpha makes Mika go weak in the knees. He puts both hands on the desk for support.
Oh, this is bad.
Mika clears his throat and reaches for any professionalism that remains in his dwindling sense of reality. “Good evening, Amane. Something has come up, so I-I believe that we should reschedule our meeting for another day.”
“Uh,” Amane stammers. Mika can almost see the physical effort it takes from him to pull away from Mika’s quivering form. “Uh, y-yeah, totally. I’ll just—I’ll see myself out—”
Another heat pang wracks Mika’s body. He groans, and his shaking knees finally give out. His hands slide off the desk as he plummets to the floor.
Amane is on the other side of the desk in a flash. He drops to his knees, duffle bag discarded, as he hooks a hand under Mika’s armpit to steady him. The other rests itself on the small of Mika’s back, and the Mika swears he can feel the heat of it searing right through his clothing.
Amane’s eyes are wide and panicked as he supports Mika’s weight. “Shit, are you ok, sir?!?”
“Yes,” Mika mutters. He leans into Amane’s contact before he is aware of what he’s doing. “Yes, I think I will be—”
When Mika looks up, his student’s face is mere inches from his own. This close, their mingled pheromones swirl around them in an intoxicating cloud far too potent to be resisted. The next twist in Mika’s gut is pure and unfiltered desire.
Immature and powerless to his own instincts, Amane takes the spike in Mika’s pheromones as an open invitation. The growl that rises in his throat penetrates all the way to Mika’s bones. He falls slack, entirely submissive as Amane’s grip around his bicep turns possessive. He drags Mika forward with a harsh yank and grazes his teeth against Mika’s sensitive scent gland.
Mika mewls pitifully, tears springing to his eyes. “ Ah, wait—”
“Smell so good,” Amane slurs. “Fuck, I wanna sink my teeth into you—”
Mika’s back arches as Amane slides his hand under his sweater to glide against his feverish skin. The contact feels incredible, mind-bending, and Mika is almost far gone enough to surrender entirely to the omega inside his mind begging to submit himself to the alpha in front of him.
Still, his obligation isn’t so easily forgotten. Alpha and omega aside, the two of them are student and teacher first and foremost.
Mika tries another attempt to rouse Amane back to his senses. “H-hey, Amane, don’t—”
Amane’s hand slides to the front of his torso, rising high enough to graze a perky nipple. Mika’s eyelids flutter.
“— god, don’t do anything you will regret. Don’t let your instincts control you.”
Mika takes his own advice and grabs Amane’s wrist before he can caress him anymore. In the crook of his shoulder, Amane trembles. He whines, draws a sharp breath, and pulls away. His eyes are still swimming in arousal, but conflict mingles with lust in a heady combination. The places they still touch are electrified.
“I—I’m sorry,” Amane stutters. With each heaving breath, he takes in more of Mika’s pheromones, and the color on his cheeks deepens every moment that passes. “I don’t know what I’m doing, it’s just—I really, really want you . ”
He says it so earnestly, so full of unrestrained bluntness that Mika feels the last vestiges of his self-control snap. Guard down, head dizzied by alpha pheromones, the omega inside devours rationality and is insatiably hungry for more.
Fuck it.
“Amane,” Mika whispers. His voice doesn’t sound like his own.
Amane gulps, Adam’s apple bobbing. “Y-yes?”
“Close the door.”
The squeak that flies out of Amane’s mouth would in any other situation sound adorable, but Mika isn’t in the mood for adorable. Pulling himself onto wobbling legs, watching the muscular curve of Amane’s back as he walks to the door and kicks it shut, Mika trembles with anticipation. He doesn’t want adorable—he wants something raw.
“Amane,” Mika says again. “Come over here.”
He props himself against the front of his desk, legs splayed open. As Amane turns around, the arousal on his face is stark as he takes in his teacher’s appearance. He settles himself between Mika’s legs like he’s done it a million times before, like he’s right at home between the plush heat of Mika’s thighs. Mika bares his throat on instinct as Amane looms over him. The hot breath that spills on his skin sends delicate shivers up his spine.
Mika puts on his best teacher voice, even if his student is currently running his nose against his jugular. “Amane, do you know why I called you here today?”
Amane takes a long, deep sniff against Mika’s scent gland and groans. “To discuss my grade?”
“Yes. More specifically, to discuss your lack of understanding regarding the material on mating patterns.”
Mika wraps his legs around Amane’s waist and pulls him forward until their chests are touching. Yuu places both hands onto the desk to balance himself as Mika leans them backward. The green of his eyes is almost swallowed completely by his pupils.
“Do you know the two most common ways for an omega to deal with their heat?” Mika asks.
Amane gulps, but his brow furrows as he searches for the answer. “Um, taking heat suppressants?”
“Mm-hm. And if suppressants aren’t available?”
Amane bites his lower lip. “Having sex with an alpha?”
“Mating with an alpha,” Mika corrects. Still, even saying the words nearly puts him into a tailspin. His voice has the smallest of tremors as he continues to speak. “The mating act serves to regulate the omega’s pheromones until they return to a normal level. Otherwise, the experience of heat can be excruciating.”
Mika punctuates the sentence with a desperate upward cant of his hips. Both of them gasp in unison.
Mika struggles to speak as Yuu takes the initiative of gracelessly grinding their growing erections together. “Y-you didn’t seem to— hn —to get this when writing your essay.”
“To be honest,” Amane huffs, “all that science crap was kinda hard to follow.”
Mika’s chuckles his way through a moan. “It can be a bit complicated, yes. But maybe a demonstration might help you understand?”
Amane drops his forehead to rest on Mika’s shoulder and whimpers. He nods his head in time with the rutting of his hips, pushing Mika further and further down onto the desk with each forward motion. “Y-yeah. I think so.”
“Good, ” Mika sighs.
His arms wrap around Amane’s shoulders, and he digs his fingernails into the jacket. Mika arches his back away from the cold, hard surface of the desk and toward Amane’s addictive body heat. He wants to feel that warmth everywhere.
“First lesson,” Mika says frantically. He grapples to pull the jacket away from Amane’s shoulders, sliding it down his arms with minor success. “Nesting is a staple behavioral pattern of omegas in heat.”
From the haven of Mika’s throat, Amane makes a curious sound. “Nesting?”
He leans back just in time to catch wind of Mika’s growing desperation to remove the letterman jacket from his body. He does the rest of the work, shrugging it off his shoulders until the material is balled up into his hands. Mika snacthes it away from him with greedy fists that moment it is in reach. Without much more prompting, Amane takes off his t-shirt and running shorts and deposits them into Mika’s awaiting hands.
Mika’s own clothes are the next to go. Amane watches wide eyed as Mika rips off his sweater, dress shirt, and unbuttons his pants with impressive speed. He shucks his pants and underwear off in one go; both of them are positively soaked in slick, so Mika abandons them with a petulant toss behind the desk. The rest are arranged into a makeshift nest as Amane looks on in plain curiosity.
Shielding his back from the painfully rigid desk below him, Mika nestles against the bunched up fabric with relief. He buries his nose into the collar of the letterman and purrs as the strong musk of an alpha envelops him.
A staggered breath catches Mika attention. Through half-lidded eyes, Mika looks up at Amane, stretching lazily as the soft surface soothes his discomfort. Amane raises a careful hand, running the back of his knuckles over the jut of Mika’s cheekbone. Mika hums softly under the touch.
All at once, the atmosphere shifts. The alpha pheromones are still strong, present no matter where Mika turns, but rather than frenetic and desperate to mate, Mika can detect the distinct scent of protection swaddling him like a newborn. It raises goosebumps along every inch of his flesh.
“Show me,” Amane whispers. “Show me how to take care of you.”
Mika’s breath catches. “Amane—”
His student’s next words are tinged with urgency. “My name. Call me by my name.”
“Yuuichirou,” Mika sighs as fingers glide along his lips. “ Yuu. ”
Amane—Yuu—swears under his breath. The name hasn’t even fully left Mika’s mouth by the time Yuu is descending upon him. The kiss leaves Mika breathless, and he moans shamelessly as Yuu’s tongue immediately delves past his lips. Skin on skin at last, Mika can overlook Yuu’s inexperience as ecstasy begins to chase away the nagging fire raging under his skin. Mika tugs Yuu closer, and both of them cry out as their naked arousals slide against each other.
“A-and your name,” Yuu rumbles into Mika’s throat. “Can I call you by your first name, too?”
Mika whips his head up and down in a poor excuse for a nod. “Yes, yes. Whatever you want—just call me yours. ”
It’s pure, unintelligible babble driven by carnal instinct. In his right mind, Mika would have cringed hearing the same words coming out of someone else’s mouth. But right now, Yuu digs his teeth harshly into Mika’s skin, and Mika wants nothing more than an alpha’s claim marking deep into his flesh.
“N-next lesson,” Mika says. He fights to speak as Yuu laves his tongue in hot stripes against his sternum. “When the omega is in a comfortable position, the alpha may then proceed with— hah, Yuu —the alpha can then begin c-copulation—”
Mika is cut off with a keen as Yuu drags his tongue over Mika’s nipple. Slick gushes out of him, dripping over the side of the desk and onto the floor below.
Mika’s face flames crimson, but he still leans up into Yuu’s mouth on his chest. “Y-you really don’t have to—”
“Want to,” Yuu mumbles into his skin. He gives the other nipple brief attention before leaving open-mouthed kisses onto his stomach. “Wanna make you feel good. God, Mika, you’re so sexy.”
Never before did Mika think his own first name would sound so erotic. Hearing it from the lips of his student, someone who has only ever addressed him with formalities up to this point, it might as well be the filthiest moniker of possession stolen straight from a porno. Mika whines, and even more slick pools near the base of his thighs.
Bent over him at this angle, there is no way Yuu can’t feel the copious moisture collecting down below. Confirming Mika’s suspicions, Yuu abandons the lavishments on his stomach and drops to his knees in front of Mika’s spread legs. Squeaking, Mika makes a weak attempt to preserve his dignity. Yuu’s fingers are digging into his thighs before he can clamp them shut.
Yuu speaks like he’s in a trance. “ Fuck , you’re so wet.” His thumbs tease dangerously close to Mika’s entrance, smearing around the mess that coats both of his legs.
Mortified, Mika slings a hand over his face. The other digs into Yuu’s hair and yanks feebly to get him away from the embarrassing sight. “Yuu, stop it—!”
“But I thought you were gonna teach me,” Yuu says low and sultry. “Shouldn’t I know about this, Mr. Shindo?”
Mika chokes on his own saliva as Yuu spreads his asscheeks apart. He clenches down, but there is nothing he can do about the wetness that continues to leak out of him. Mika raises his head up, peeking beneath his arm at Yuu’s feral expression.
“Sir?” Yuu asks. The feel of heavy breath against his cock and entrance drives Mikas wild. “Hm, Mika?”
Mika clenches his teeth. He doesn’t miss the small smirk growing on Yuu’s lips.
“Omegas, regardless of sex, self-lubricate in order to accommodate their partners during mating,” Mika explains breathlessly. “During heats, omegas will produce even more slick in anticipation of being knotted— Yuu!! ”
Mika squawks as Yuu runs his tongue over his fluttering entrance, and a delicious jolt of pleasure rattles all the way to his bones. Mika is caught between squirming away from Yuu’s wandering mouth and pulling him closer with a desperate tug against his hair.
“W-what are you—?”
Yuu’s moan is so obscene it makes Mika’s toes curl. He speaks like a man possessed.
“You taste so good...”
He delivers a filthy, tongue-heavy kiss against Mika’s hole, and Mika bites down on the meat of his thumb before he can scream loud enough to rattle the foundations of the school. His protests are lost to broken groans as Yuu continues to indulge himself. He pushes his tongue past Mika’s rim, just far enough to be felt, and the sensation of being penetrated makes Mika’s brain go haywire.
“ Yuu ,” Mika sobs. “This is not part of the lesson—just get on with it already!”
Yuu gives a throaty chuckle; the vibrations make Mika’s eyes roll back into his skull. “But, I want to make you feel good.”
“You’re making me feel insane .”
With one last hard suck, Yuu pulls away from Mika’s ass. Mika deflates against the desk as Yuu comes back into view. His lips and chin are shiny with the remnants of Mika’s slick, and the sight makes Mika’s heartbeat in double time. Yuu smiles and delivers a chaste kiss to Mika’s hipbone.
“Good,” he purrs.
When Mika pulls him up by the shoulders, Yuu actually follows until their lips are pressed back together. The taste of his own slick isn’t as embarrassing as Mika thinks it should be. If anything, the mingled taste of slick and Yuu’s saliva drives him even further over the brink of madness. He hooks his ankles around Yuu’s thighs until the blunt head of his cock rubs against Mika’s ass.
“Amane,” Mika growls. “Get inside me. Now. ”
Yuu shudders, and he wraps both hands around Mika’s hips. “Yes, sir.”
The first push of Yuu’s cock inside is pure euphoria. All Mika can do is hold on for dear life and shudder his way through the burning stretch until Yuu’s pelvis presses against his ass. He clenches down around the girth, greedy to feel more. Yuu gasps and groans into Mika’s throat.
“Fuck,” he hisses. “God, Mika you’re— hah , so hot and tight and perfect— ”
Mika leans back until his head thunks against the desk. He urges Yuu to move with impatient wiggles of his hips. “Alpha, please don’t keep me waiting anymore.”
The use of his dynamic coaxes more expletives out of Yuu’s mouth. “But what do I do?”
“Just fuck me. ”
Yuu trembles but gives Mika precisely what he wants. Yuu moves his hips back and forth in a shallow thrust, and the sensation has stars bouncing behind Mika’s eyelids; he and Yuu moan in tandem. Yuu repeats the motion, building in speed and confidence by the moment, until both of them are crying out, fully succumbed to their instincts.
Yuu’s thrusts are wild, entirely feral and lacking any cohesive rhythm, yet each one spirals Mika further and further into hysteria. He makes no attempts to stifle his voice, letting each cry ring free every time Yuu grazes his prostate. Amongst the dizzying pleasure, Mika is lost in the rough grunts of Yuu by his ear and the creaking of the desk below with each vicious ram forward.
Mika can’t remember what he was supposed to be teaching anymore. He can barely remember his own name. Another sharp jab against a sweet spot has Mika howling in pleasure, and Mika wonders if he ever knew anything about mating at all.
Never did he think it could be like this.
“Mika,” Yuu cries out. His mouth is back on Mika’s in a flash, and their teeth clack together with the force of it. “So good I— god , I-I think I’m close.”
Mika feels his end approaching as well. His stomach twists and toes curl, but he still doesn’t feel that thickness he’s been craving right from the start.
“Y-your knot,” Mika wails. “You have to give me your knot—!”
Yuu nods frantically. He slams his hips forward hard enough to slide the desk across the linoleum floor with a horrid screech, but his knot still doesn’t push inside. Mika claws his fingernails down Yuu’s back, bucking back into each, mindless and panicked and desperate to be stretched beyond his limits.
Finally, the swollen flesh begins to push past Mika’s rim—and the moment Yuu’s knot pops inside, Mika’s vision goes white.
His own scream sounds miles away, the feral wailing of an animal. He is only vaguely aware of Yuu’s frantic moans as he stills his hips and orgasms into Mika’s core. The swell of Yuu’s knot is bright enough to pull Mika back to his senses, and he clenches down around it as the afterglow turns his muscles to jelly.
Mika wraps his arms around Yuu as he collapses on top of his heaving chest. Both of them spend a few minutes of labored breathing before a weary chuckle rumbles out of Yuu’s mouth.
“Goddamn,” he whispers. “That was—”
He tries to pull out. Mika shrieks.
“ AH— Yuu stop! It hurts!”
Immediately, Yuu freezes. “I’m sorry, I’m sorry!!”
Mika sighs in relief as the sting subsides. “S’okay.” He wiggles closer, stretches his legs wider just to be safe. “After knotting someone, an alpha can’t pull out until the knot decreases in size.”
“O-oh, I see. What for?”
“To increase the chance for pregnancy.”
Yuu’s face goes whiter than the office’s drab paint job. Mika can’t help himself; he tips his head back and laughs out loud.
“Don’t worry,” he says in between snickers. “You’re not going to get me pregnant.”
Yuu’s shoulders slump in relief, and he smiles as Mika ruffles his hair. “Jesus, don’t scare me like that.”
They share another laugh, Mika into the back of his hand and Yuu laying his ear onto Mika’s chest, until the playfulness fades into the silence. Quickly, awkwardness creeps in to take its place.
No matter how much Mika tried to escape it, the reality of the situation is once again rearing its ugly head. Heat pangs subdued, Mika must come to terms with exactly who is knotting him right now and how on earth he let himself get into this situation. He clears his throat.
“Amane,” he says quietly. He wriggles away just far enough to see Yuu’s face and promptly ignores the incessant tug of Yuu’s knot against his rim. “I—I’m sorry for dragging you into this situation. It was extremely unprofessional—”
“You can say my name,” Yuu says suddenly. The blush painting the bridge of his nose makes Mika’s stomach flip. His green eyes, no longer clouded with lust, shine earnestly. “And don’t say sorry. I was the one who started it.”
Mika’s heart flutters. “Well. Thank you, Yuu. For, um, helping me out.”
Yuu bites his lip. “Do you often have people...helping you out like this?”
Mika stiffens. Heat rises all the way to the tips of his ears.
“A-ah, no. It’s been a while. Usually I just take suppressants.”
Yuu looks overly pleased. “Oh. I see.”
Mika hums and runs a hand through Yuu’s hair. “And I’m assuming you’ve never dealt with an omega in heat before?”
Now it is Yuu that turns bashful. He ducks his head back into Mika’s neck the moment color springs to his cheeks. His favorite place to hide it seems.
“Well,” Yuu murmurs. “I’ve never—I mean this was sort of my first time with anyone at all.”
Again, Mika’s heart races. For reasons he can’t possibly name, he is happy about this development. Knowing Yuu’s knot isn’t deflating anytime soon, Mika let’s his hands rest back onto the curves of Yuu’s back, thumbs drawing idle patterns on the skin. Yuu nuzzles further into Mika’s neck.
“...do you think I could help you out again? And you teach me some more things?”
Mika’s hands still. Yuu’s words ring in his ear like the hushed temptations of the devil. Already, his heat begins to stir back to life in his gut.
Mika is a teacher. Yuu is his student. What he should do is more than clear.
Swallowing thickly, Mika pulls Yuu closer. He shivers as Yuu’s lips brush against his neck. His scent has burrowed right under Mika’s skin.
“Well,” Mika says. “I suppose some private tutoring wouldn’t hurt anyone.”