⋆. 𐙚˚࿔ ashlin 𝜗𝜚˚⋆

it has been said that something as small as the flutter of a butterfly's wing can ultimately cause a typhoon halfway around the world. - chaos theory

"THE BUTTERFLY EFFECT IS A PRINCIPLE IN CHAOS THEORY THAT STATES THAT SMALL, SEEMINGLY INSIGNIFICANT CHANGES IN INITIAL CONDITIONS CAN TRIGGER MASSIVE, UNPREDICTABLE, AND VASTLY DIFFERENT OUTCOMES IN COMPLEX SYSTEMS-"

Mingyu knows what the butterfly effect is. In fact, the exact audio recording playing on loop throughout the penthouse apartment is the same audio that's been haunting his dreams and the moments of almost sleep he's been having at his desk while filling out piles and piles of paperwork at the station.

Now, the audio is playing again at the third crime scene in as many months, and he's had it.

"Turn that shit off," he barks, walking through the flickering holograph of the caution barrier. His legs disrupt the light only for a second, shadows bounding off the walls as he enters the main living area. "I'm tired of hearing about the fucking butterfly effect."

He was tired of researching it, too. Researching why a serial killer would leave the same recording playing at each crime scene over and over again, researching what the murders could possibly have to do with one another. So far, the first five victims have no connection to one another, nothing that clues Mingyu into what's going on beyond the same audio on loop. He doesn't expect this sixth victim will have any connection to their predecessors, but he has to try.

A grisly scene paints the penthouse. It's a nicer home than anything Mingyu will ever afford with floor-to-cieling windows that overlook the neon smear of the city. Rain blurs against the glass, turning the glow beyond to a muted opaque color that clashes with the bright caution banners and the lights of the investigative unit called to the scene.

The penthouse reeks of the metallic tang of blood and the faint tang of the chemicals the collection team uses to take samples all around the apartment. The victim lies splayed across the massive obsidian coffee table in the main entertainment area, arms and legs extended at unnatural angles. It's a male body, the torso filleted open from sternum to pelvis with surgical precision, the ribs cracked outward like grotesque wings.

Mingyu has seen five of these now. Each one has been more elaborate than the last. Each one leaves him with the same hollow frustrating gnawing at his gut.

"Lee," he barks at the lead forensic tech hovering nearby. "Anything different this time? Prints? Core signature? A confession, perhaps?"

Chan shakes his head, his rain-slicked jacket shedding beads of water onto the floor. "Same as the others. No prints, and the audio rig is the same ghost job as the last. The victim owns the building, his name is Harlan Voss. He got a new Skin a few weeks ago at Sync Corp. Nice model, nothing too extreme."

Mingyu crouches beside the table, his boots squelching in the thin layer of blood that has spread across the marble. Through the windows, the city pulses below, bright signs for body rental shops and upgrade clinics flashing in the downpour. Towering buildings disappear into the clouds, connected by old elevated trains that rattle in the distance.

Mingyu looks at the body. Chan had said the Skin upgrade was nothing too extreme, but in a world where people swap bodies regularly, the word extreme has lost most of its value, especially for people like Harlan Voss who are wealthy enough to transfer the Core implanted in their brain stem to a new body anytime they want.

It makes permanent death uncommon for people of this caliber. Mingyu tilts his head to the side, examining the back of Harlan's neck where his Core is. Like the others, it's damaged, which means Harlan is dead dead. No transferring his Core to a new body after the death of this one, no regeneration.

It unsettles something deep in Mingyu like satisfaction, and he pushes it down. He has no time to be disgusted by the Skin jumping of the wealthy while the people below scrap together money to upgrade their Skins to something new or broken just for the prestige of doing it.

Mingyu pushes up to his feet, joints popping and back aching. He groans - unlike the dead victim in front of him, he can't pay to have the tiny device buried in his neck to be transferred to some upgraded flashy skin. One would assume that as law enforcement, he'd get some kind of special discount or offers to enhance his speed, strength or something, but Mingyu has quickly learned that only the wealthy benefit from anything in this city.

He looks around the room slowly, eyes scanning for anything out of place. A broken glass on the bar counter. A half-empty bottle of cheap whiskey tipped over, mixing with the blood into a pink mess. Framed pictures on the walls show vacation spots in brighter cities, the kind most people only see in ads. One frame lies smashed on the floor, exposing basic wiring behind the fancy cover. Typical rich place that looks expensive on top but cheap underneath.

"Why butterflies?" Mingyu mutters to himself. "Chaos theory. One small change leads to big results. Like a butterfly flapping its wings and starting a storm somewhere else."

The killer isn't hiding the message. Each killing has happened once a month - not on a perfect timing, but approximate. Each scene is bigger - more wing shapes, more lights, the same audio. But the victims are never the same and thus far, there's no link between them. No shared friends, no common jobs, nothing on the basic records. A nobody found in a cheap rental unit. An escort pulled from a job. Nothing ties them together except this ritual.

But Mingyu doesn't know what this ritual is.

Frustration burns in his chest. Five months of this, nights bleeding into days at the station, staring at paper files and holoscreens while rain water leaks onto his desk. His own body feels worn out - aches deep in his joints, eyes burning constantly from lack of sleep. Unlike the dead man in front of him, Mingyu can't afford a new Skin on a detective's pay.

"Detective Kim?" Chan calls, voice unsure. Mingyu spins on his heel to find Chan crouched by the body, holding a small device in his hand near the core in the victim's neck. "I think the core is damaged but not dead."

"What?"

Mingyu strides over, his long legs making it easy. Chan crouches lower, the glasses on his face sliding down his sweaty nose. Mingyu leans over, tilting his head as Chan gently nudges the victim's head to turn it more. The Core is exposed to the elements and cut, like the attacker had been cutting it out to kill it, but as it catches the light, there's a small blip of cyan along the side, flickering as it tries to regain connectivity.

"Holy shit," Mingyu whispers. "If it's still alive, can you re-gen this guy?"

"Maybe, but it's potentially damaged enough that he would come back with high-level personality disorders or other cognitive issues. We might be able to repair enough to access memory or information, though." Chan hesitates. "Legal might get involved. If he's got family or others left behind, they might demand the Core be delivered to them to figure out what to do with it or refuse access to us."

Mingyu's hums, thoughtful. The possibility of interference is higher than he'd like to admit. In the few cases that Mingyu has dealt with the elite, their spouses or family left behind have always been nearly impossible in active investigations. He's since learned that those who sit in gilded glass towers have more to hide than the criminals crawling on the ground, and they'd rather a case go cold than unearth their secrets.

"Are we required to notify them?" Mingyu asks, glancing at Chan.

"Yes?"

"What if we only found it was discovered functional later in a proper autopsy."

Chan looks uncomfortable for a moment before nodding. "Yeah. That would make sense."

"Autopsies get delayed, right?" Chan sighs and Mingyu grins, slapping him on the back as he stands again. "Glad we understand each other, Lee. Take care of this while I walk around the area, yeah?"

"Yes, Detective."

Mingyu leaves the apartment and takes the stairs instead of the elevator, his knees protesting with each step. The exercise feels good though, so he jogs down the winding stairs, mind racing. By the time he reaches the ground level, he's sore and his heart is pounding, both reminders that he's human and that he's in his natural body, two things he's grown to be proud of.

The lobby is sleek, made up of polished obsidian and soft blue recessed lighting. Mingyu strolls through the automatic doors, the air locks hissing as he lets himself out into the rain, shoes tapping wetly on the pavement.

Reaching into his pocket, he fishes out a cigarette - an ancient, old world habit in comparison to the sleek vapes most people use - and sticks it between his lips, digging around his pocket for a lighter. He finds it and flicks it, the orange flame licking upward as he lights the cigarette, taking a brief drag. The flame catches and he flicks it shut, taking a heavy drag and lets the smoke settle in his lungs before he exhales into the neon smear of rain.

The street level is quieter this time of night, most of the storefronts closed, their holographic signs still flickering anyway. The street is full of advertising and marketing for Skin modification services, Core implant repairs, temporary Skin rentals for people too poor to own one permanently but desperate enough to spend a night as someone else.

Neon bleeds across the wet pavement in streaks of magenta and cyan, reflecting off the rain to create a blurry kaleidoscope of light that makes Mingyu's eyes water as he takes another drag, flicking ash into a puddle where it melts.

He walks, letting his feet guide him around the perimeter of the building, cool raing tapping down on his head and neck like soft fingers. He doesn't bother with an umbrella, the rain sliding off his jacket as he examines the exterior, cigarette wedged between his lips.

The neighborhood is a mix of high-rises towering over strip malls, luxury boutiques selling pricey mods next to hole-in-the-wall clinics offering illegal and questionable upgrades. It's one of common liminal spaces in the city where the almost wealthy clash with the lower glass, each fighting for dominance on the ground while the megaliths of the city exist in their towers far above.

Mingyu wonders what the rest of them look like from on high. He imagines that they can't even see people like him, rotting beneath the clouds and scurrying around like ants beneath a boot that's constantly waiting to step on them. Mingyu has been stepped on plenty of times, but he hasn't died yet and he doesn't plan on it now, heading to the back alleyway behind the building.

Dumpsters filled with broken tech litter the alleyway, but Mingyu pauses when he sees a bunch of old, rotted Skins. He lifts his arm, covering his face with it to ward off the smell. Skins are still bodies - they're still organic material like any other living organism, and they break down the same way. Seeing tossed Skins isn't uncommon, especially near body-mod shops, but Mingyu is unsettled to see them just tossed, flies buzzing around them.

Pulling out his phone, he dials Chan up stairs. "Send a team down to the back alley, there's discarded Skins. None of them look fresh or functional, but maybe our killer tosses theirs."

"On it."

"Also have someone dispose of these before someone wanders around and tries to take them. They're rotted beyond use, the last thing we need is some kind of infection going around because people are re-genning bad Skins."

"Understood."

Mingyu hangs up the phone and takes the final drag of his cigarette before flicking it toward the dumpster. He continues on his way, searching - for what he doesn't know. Something. Anything. He just wants to find something to help him unravel the mystery upstairs, something he's missed previously.

As always, he finds nothing except the smell of wet concrete and biological decay, the distant hum of an elevated train line cutting through the noise somewhere. He circles back to the front of the building and finds himself looking upward. The building is a vertical monument to wealth that juts up into the rain-soaked sky, but it's got nothing on the monstrosities the corporation owners and mega-rich of the city live in.

The rain grows heavier, coming down in sheets. Mingyu slips under the overhang in front of the building, watching as the world vanishes to a blur of light behind the rain. From here, he knows the city by heart - it spreads out in layers, the commercial district with aggressive neon signage, the old industrial zones still smoking from plants that are ready to collapse any minute, and beyond, the entertainment and wealthy districts.

Trains arc across the space between buildings while autonomous vehicles move through the streets in perfect formation, headlights occasionally cutting through the dark toward him as they pass by the building.

They city pulses on despite the death upstairs, the desperation and money and excess and filth all tangled together, and somewhere in it, is the person Mingyu is hunting, the butterfly that haunts his dreams and all of the hours in between.

Your masters is over and thankfully you've found a job a little easier than you’d expected. In a few weeks you’d begin working at the local paper as a junior journalist and be done with university forever. Well, that is apart from Seungcheol moaning about deadlines and students who never hand in assignments on time. Although he will now be doing that at a new university. A head of faculty position came up at a university just outside of town and he was lucky enough to get the job, though you'd told him a million times it's them that's lucky to have him. It’s a little more of a commute but it’s only ten minutes away from your work so you can grab lunch a couple of times a week. 

Both of you were excited for this new chapter in your lives but you’d be lying if you said you weren’t going to miss the dynamic you have. You don’t travel to and from university together but you’d gotten used to seeing him around campus every day and having his lessons three times a week. Yes, you live together and have for ages, but it’ll be odd to not know he’s around. That if you're having a really bad day you can go to his office and vent about what's annoying you. 

One thing you won’t miss though is a certain someone who has always made you want to commit the most grotesque crimes known to mankind. 

Jihoo. 

Although ironically, Jihoo is the reason that Seungcheol has spent the whole morning, whilst you ate breakfast, looking more and more concerned about what you might be planning. Not that he has any idea it has anything to do with her, why would he? You never told him what you overheard. But you’ll be damned if you don’t teach that spiteful little teacher's pet a lesson she’ll never forget. 

Two days ago:

“You are the only one in class he seems to be drawn to." 

"Of course I am, have you seen the others in that class? All of them would struggle to win best in show at a dog show let alone manage to bag someone like him. Seriously he's lucky I'm there to relieve his eyes from the creatures taking up the seats.” 

You don't condone calling other women bitches. But you'll make an exception for Jihoo. Wouldn't win best in show?! And creatures?! You knew she was a dick but you didn't think she was that cruel. 

“He's into you, I can feel it." 

You've no idea who this other woman is but she'll feel something soon. Mainly, your palm on her cheek. And not in a hot way. 

“I know," you can hear Jihoo’s smirk even through the bathroom cubicle, “I'm going to wait until the last day. It's a stupid rule if you ask me, no relationships between students and professors, but I think that's the only reason he's not made a move yet, he's worried about us getting found out." 

She can't be serious? Maybe she's talking about some other professor that's unlucky enough to have her in their classes. She cannot be talking about your Seu……

"This time next year, I'll probably be Mrs Professor Choi.” Her and her little lap dog both squeal and you're so shocked you almost fall off the toilet. 

You'll kill her. And her friend. You don't care if it means Seungcheol having to visit you in prison, at least he still won't be hers. For two years you've sat and watched her bat her eyelashes and ogle your man and you just won't stand for it anymore. 

“So are you going to talk to him after class?" 

“It's a morning class though," she sighs and you can imagine her checking herself out in the mirror, “and he'll still technically have classes I suppose. I'm going to go back after last class. Then we can be honest with each other, then he won't technically be staff here anymore.”  

Oh you'll be honest with her. She doesn't stand a chance. And you're going to show her that in the only way you know how. 

Seungcheol may be the professor. But it's you that's going to teach her a lesson. 

Seungcheol is sitting behind his desk when you enter the class. It's your first and last of the day. The last day of being a student entirely and, although you've got a plan for later today, you can't help the slight bounce in your step from excitement of all this finally being done. 

Amazingly, because it's normally Jihoo, you're the first in the class. Though you know there's some of your classmates not far behind you so you can't do anything untoward. Seungcheol rushes from his chair regardless and peaks through the door to check if there's anyone coming whilst he grabs your hand. 

“Last class then." He smiles softly. 

"Hm-mm,” you grin. 

"I'm so proud of you _____. I'm so proud to be your boyfriend." He kisses your forehead, his hands stroking your cheeks. 

"Thank you," you reply with your hands on his arms as he continues to hold your cheeks, “I'm proud of you too y’know. Head of faculty at 35 is pretty good going Professor Choi.” 

"You can show me how proud you are later.” He smirks though jumps back when he hears the door opening. 

You rush off to your seat but send him a wink, or try to at least, causing Seungcheol to hold back a laugh at your feeble attempt. 

You thought he'd forgotten that you seemed to be up to something this morning. But from the way his eyes dart to yours the second Jihoo walks in the room, he's clearly expecting something. 

She does as she always does though. Waltzes in and makes a point of walking up to Seungcheol. 

“Morning professor. I got you this." And she hands him a bag with something in it.  

“I've told you Jihoo, you don't need to bring me food if we have a morning class. I've eaten already, twice actually." 

You smirk into your hand and pretend to not be listening to their little interaction. You know what he means by that. He's eaten you this morning just before he ate his actual breakfast. 

“I know I don't need to, I like doing it. I got you the almond croissant because I know they're your favourite." She says much too loudly like she's trying to gloat about it to the rest of the class. All she gets though is surreptitious eyerolls. 

“Thank you Jihoo." He says, though there's no true feelings behind it. And hates almonds. So more fool her. 

She swishes over to her desk, her false smile only being met with blank stairs of indifference and sits down, taking out everything she'll need and waiting patiently with her pen for Seungcheol to start the class. 

"Ok everyone, I know……." You try not to groan when someone's hand flies into the air, “Yes. Jihoo." He tries to smile though you know he's already had enough of her. 

“As the student representative for the class," 

When the fuck did that happen? You wonder whether it's just you that missed that happening but everyone else is exchanging confused looks too. So clearly she's just gone full dictator and decided it herself. 

"I would just like to say that it has been an honour to be taught by such a wonderful teacher." Ass licker you think to yourself as you try not to look at her. 

Seungcheol obviously is expecting you to glare at her, he thought that today would be the day that you finally put her in her place. He thought that's why you were being so odd. But you're not even looking over with your usual glare. You're just indifferent and if anything, that worries him more. 

“Thank you and……” 

"AND,” does she have no manners?! "As a thank you. We, well mainly me," she chuckles with her hand on her chest, “have bought you this." 

Well it would only be her. You didn't know about it. And everyone looking horrified shows nobody knew about it. 

“Er," he looks around the class, “thank you? It's been a pleasure teaching you, teaching all of you I mean." He adds in when Jihoo’s face lights up, presuming he only means her. 

He glances at you again, hoping to enjoy your glaring, but just like before, you're just sitting quite happily at your desk waiting for the lesson to start. 

This is very odd, Seungcheol thinks to himself. Do you not care that Jihoo is quite clearly flirting with him anymore? He loves how territorial you are over him, how protective you are of your relationship. And yet now you don't seem to care at all. 

You've been together for years, before you even decided to do your masters. You were young when you met, he knew that. But 9 years isn't that big an age gap, although twenty one and thirty did feel a bit too big a stretch at the beginning. 

It never felt weird though. You were made for each other, you just worked well together, right from the beginning. He knows you're the love of his life and he knows you feel the same. At least he thought he did but now you're happily letting this wannabe home wrecker flirt with him and you're not even sending her the normal daggers. 

This is weird. And it's beginning to freak him out. 

Maybe now you're coming to the end of this chapter of your life, you're coming to the end of Seungcheol too? 

Well. He won't stand for it. He'll lock you in the wardrobe if he needs to until you see sense. You're not dropping him now. He knows he won't be able to function properly without you his life. And he won't let you just throw it away now you've moved on to a new stage in life. 

He doesn't focus on the lesson after that, he just goes through the motions. 

You're both lost in your own little worlds. Seungcheol in a world where he is dying alone, nobody around his deathbed aside from nurses who don't know him. And then you, completely lost in what you know is coming and with not a care in the world for the spiral your boyfriend is currently spinning down. 

If you've timed everything correctly, and you're certain you have, this should all work like clock work. You know from overhearing the coven meeting Jihoo talking to her friend, that she intends to go to his classroom after final classes have finished. You know from Seungcheol that he doesn't have anything during his last two classes today. But he does have a little get together with the faculty before their final lessons of the day. They had leaving drinks a couple of days ago so you know once he's done with their little get together today, he has nothing else planned. 

He was expecting you to go home. That's what you'd normally do if you had no classes. And that's what you did do, you had lunch with a couple of friends from your other classes and then headed home. But that was literally just to shower and to change because you've headed straight back to campus to set your little plan into action. 

So now you’re waiting just past his classroom, hoping he won't see you from your watch post and hoping Jihoo doesn't arrive at the wrong time. 

You hear him before you see him, promising to meet up with one of the older professors that you know he hates. But his fake promise of a drink in a few weeks helps you, because you can hear him getting closer without having to expose yourself to him just yet. 

His door opens and closes and you take a moment to lean against the wall and take a deep breath. You're not nervous, you’re more excited to get your own back on that annoying idiot after two years of wanting to throw things at her in class.  

You open his door slowly, hoping he won't hear you. It won't really matter if he does but you'd just rather have the element of surprise when you're a bit closer to him. 

Perhaps sky high heels weren't the best idea you've ever had if you also wanted to walk in stealth mode but you somehow manage and your favourite professor doesn't realise you're there until it's too late. 

“WHAT THE FUCK?!" He tries to look around on his spinny chair to see who the hell has decided to move him whilst he's trying to pack his bag. “_____?!" 

“Yes professor?" You ask, like dragging a professor around on his wheely chair is totally normal. 

“What the hell are you doing?!" 

“Putting you in your stationary cupboard." You respond as though it should be obvious. 

In the two years you've been in his classes, you'd never utilised this stationary cupboard. Which is a travesty when you consider it could probably hold about six people and it has no windows. It's the perfect spot. Yet when you've fooled around it's been in the classroom. Or that time under his desk. 

"Why?!” He demands as you open the door to it and drag him in, "you could've just asked me to get up, you didn't need to drag me. Is this how you're going to break up with me? Just leave me here to rot?!” 

You stop in shock, the door closing behind you, him sort of gliding into the middle of the cupboard on his own  and you're both plunged into the darkness. 

"Break up?!” You screech as you turn the light on. Not that it really adds much light, the light bulb must be ancient and it's more like candle light. But you can see him and that's what matters. 

"You didn't glare at her this morning. Do you not love me anymore?" 

"Of course I love you!” 

"She was flirting with me _____, even more than normal and you just let her.” He folds his arms and looks away. 

"I just zoned her out. I had more important things to think about.” 

"More important than us?” 

"I was thinking about us.” You pull the belt a little on your trench coat subconsciously. 

“What?" 

His eyes widen as he realises what you're wearing. It's far removed from the casual clothes you had on earlier. In fact he swears he's never seen that coat before in his life. But then, he wouldn't have. You ordered it whilst you were still on the toilet in the thirty seconds between Jihoo leaving with her little leech and you forming this plan. 

"What are you doing?” He narrows his eyes at you, much like he did at breakfast. 

"Making our last day one to remember.” 

Your smirk is devilish as you undo the belt to the trench coat and let it fall to the floor. Seungcheol's jaw falls to the floor along with it when he realises you've walked through campus in nothing but a coat and sky high heels. 

“Do you remember when you called me vanilla?" 

He’s not listening. He's just staring at your naked body and the way you somehow look even hotter now you only have six inch heels on. 

“That was," he licks his lips as you move your hair and the action makes your tits move a little, “that was ages ago. And you made your point." 

“But you said I'd never fuck in public." 

“I say a lot of things,” he dismisses you, "come here.” 

"Do you remember you said I'd never fuck in public?" You press again. 

“Yes!" He answers distractedly, palming himself over his pants with his eyes on your pussy rather than your face. 

“I just wanted to check if you remembered, that's all." 

“Is that what this is, you proving your point again?" 

“It will be." 

He doesn't catch what you say or what you mean, just hums and decides he's tired of waiting for you to move. He drags himself along the floor on his chair, obviously forgetting he has fully functioning legs and stops right infront of you, his eyes level with your pussy. 

“This is what you’ve been planning?” 

“Mostly,” you shrug like you don’t want to pounce on him. 

“So this is the reason you didn’t pay attention in your last lesson of your whole education,” his fingers wander up and down your thighs now you’re standing between his spread legs, “you were too busy thinking about kidnapping the professor?” 

“It’s hardly kidnap when we’re still in your classroom,” you reply though he knows his tantalising fingers are affecting you from your goose bumped skin. 

“So what’s your plan now?” His puppy dog eyes look up at you as he leaves little kisses all over your stomach. 

Oh. You stare down at his chair, there is just one slight flaw in your plan. 

“Does that chair have brakes?” 

“Why?” You feel him smirk into your skin. 

“Because I imagined this going a certain way but I forgot your chair had wheels.” 

“You’ve just wheeled me in here.” 

“Can we not do this now? I’m on a tight schedule.” 

He frowns at you but decides kissing painfully close to your dripping pussy is a far better use of his brain power than figuring out what the hell you’re talking about. 

“It’s got brakes.” His kisses just above where you ache for him, exactly where he knows it will annoy you most. “What…..w-what the fuck?!” 

You don’t give him a chance to think, just wheel him back to the middle of the room and kneel down to undo his belt. 

“Lift your ass up,” You roll your eyes when he doesn't move for you.  

“You’re so badly behaved. It’s bad enough you ignored my lesson, kidnapped me and now you’ve forgotten basic manners?”

“Do you want this or not?” You bark at him, you’re already getting pissed off because you had no fucking idea it was so hard to kneel down comfortably in stilettos. 

“I want you to say please.” 

A stand off ensues. Both of you refusing to break eye contact. You on the floor butt naked other than satan's shoes and him in his chair looking like a toddler in a suit. The trouble is though, you really don’t have time for this if you want this to play out like you hope it does. 

“Please professor, can you lift your perfect ass so that I can take your big dick out and ride it like a pony?” 

“That depends.” He says arrogantly. 

“On what?!” 

“Did you get me a gift? Jihoo got me a gift and a croi…….. Don’t do that!!” 

“Why?” you ask as you stand up and reach to get your coat. 

“I thought I was being ridden like a pony.” He whines. 

“That was before you annoyed me. Now I’m going home to ride my dildo like a pony and you can organise your pens or whatever the fuck you do in this overly large stationary cupboard.” 

“Put that coat on and I won’t touch you for a week.” His voice suddenly turns cold and you will yourself to remain stoic. 

“Oh please,” you scoff, though don’t move to actually put the coat on, “you can’t help yourself. You’re just an old simp.” 

He throws himself out of his chair, his suit jacket thrown clumsily on one of the shelves and his pants and underwear discarded in the blink of an eye as soon as he has his shoes off. He takes his shirt off and if you were paying attention you’d realise he’s still got his tie in his hands. But you don’t, because your eyes are drawn to the rather massive elephant in the room. 

“Right.” He flops back down into the chair, his dick bouncing as he does, “Happy? Come here.” 

“No,”

“For fucks sake I was only joking about her!” 

“It’s not that. Socks,” You glance down at his feet. You’d barely even noticed his dick until he sat down because there is no way in hell you’re fucking someone who's wearing pokemon day of the week socks. They’re not even the right day. 

“You’re ridiculous,” he glares as he reaches down to take his socks off, “you know that?” 

“And yet you’re still rock hard for me.” 

“And yet you’re still dripping down your thighs.” He smiles sarcastically at you as you glance down and realise he’s right. “I’m tired of this.” He scoots over to you again and stops directly in front of you, glowering as he reaches down to put the brakes on. “Hands.”

“What?” You give him a startled look. 

“Give me,” he lifts his tie up, “your hands.”

This you weren’t expecting. You just thought it’d be simple. You’d ride him, he’d get too worked up like he always does and he’d end up bouncing you on his dick like an overenthusiastic jack in the box. 

You turn around and hold your wrists out behind you, your heart pounding and hands shaking a little in excitement as his hands grope your ass now it’s directly in front of him. 

“Good girl,” he smirks as he binds your wrists with the silk tie, “I don’t know what you thought you were doing baby, waltzing in here like it was your right, like you were the one in charge in this classroom.” He tests that you’re secure before making himself comfortable in the chair. 

“Go on then,” he leans back, his arms resting on the chair arms like he isn’t waiting for you to ride him. 

“You’re not going to do anything first?” Your turn around. 

“You’re already fucking soaked, don’t act like you can’t take it baby.” 

“I was just asking,” you mumble. 

Seungcheol holds your hips as you straddle him, he may be in one of those moods but he’s not going to let you hurt yourself for the sake of this and your obscene shoes. It’s only when you’re in position and he’s lazily holding his dick so you can lower yourself onto it, that you realise this is going to be fucking awkward to do. 

You’re in huge heels, your hands are behind your back and so you’re not best placed to slowly move yourself up and down his much too big dick repeatedly until you’re fully impaled. And one look at him tells you he figured this out long before you did. 

It’s not like you’re not used to the size of him, you are. Mostly. But just taking him in one go, in heels and with wrists bound? It feels more like a squid game challenge than the simple fuck you’d envisaged. 

You take a deep breath and with Seungcheol positioning his dick in one hand and holding your hip in the other, you lower yourself down onto him. 

The stretch burns but in a familiarly pleasurably way. He’s the only man that’s ever made you feel this sort of beautiful burn and you’d be lying if you said you didn’t love the way it stings slightly as your boyfriend's big dick feels like it breaks you in two. 

“Doing so good for me,” He tries to soothe you through gritted teeth. If you’ll never get used to the size of him, he’ll definitely never get used to how it feels as your pussy slowly drags him further and further into your snug, warm walls. 

Your calves are burning from how slowly you’re trying to lower yourself down because you can’t hold onto him or to anything. 

Fuck it, it’ll burn for like a second but think of how great it’ll feel when you’re so full of him you can’t breathe properly. And so you just go for it. 

“Fuck!!” You both cry out in unison when you just let yourself sit on him in one swift movement. 

“Why are you so fucking big?” You grumble as you try to take deep breaths, your head resting on his shoulder. 

“Then I can fuck you so well that you’re so tired, you stop being fucking weird for two mintues,” 

“You’ll be sorry you said that.” You lift your head to challenge him. 

“Oh yeah?”

“I ordered a strap last week that’s the exact same size as you. You won’t be so fucking cocky when you’re crying because my big dick is streching your ass so much that you can’t even think straight.” 

You ward off a smirk when he tries to act like that hasn’t had any effect on him. But his dick gives him away, you feel him twitch inside you.  

“You like that idea? You’re always so pathetic when it comes to your ass Seungcheol. You’re such a……Owww!” You whine, your whole body jolting when he pulls your hair back and sucks a mark onto your neck. 

“Aren’t,” you sigh in pleasure, “aren’t you too old for hickies?” 

You know you’re annoying him but these marks will only make all of this even more enjoyable in the end.

He doesn’t answer, just pulls your hair again so the other side of your neck is presented to him and sucks another harsh mark. 

“Move,” He sits back in his chair with an arrogant look on his face that makes you unknowingly clench around him. 

“Say please,” Why are you doing this? You’re desperate to move and yet you’re still trying to act like you have any authority in a situation, where your hands are already out of action and you’re completely beholden to him. 

“Don’t then,” He puts his hands behind his head, looking completely disinterested. 

You glance at the clock. You haven’t got time for this. 

“I knew you wouldn’t hold out for long,” he chuckles as your hips slowly start grinding on him. 

Oh. Well you didn’t expect that, you might need to wear heels more often for days you feel like taking a ride on his office chair. Your feet are easily cemented on the floor and if anything they’re helping you move a little easier than normal and he feels like he’s almost hitting even deeper because of it. You’re struggling to even care that you can’t hold onto anything, your hips speed up and eventually you feel him hit that epic spot inside you so hard that you turn to fully bouncing on him just to feel him hit it even harder. 

“Look at you _____, finished top of all your classes but forget anything and everything the second you can bounce on my big dick,” 

You’re not listening to him and you don’t care what he’s saying, you bounce away on his dick with not a care in the world. Your juices dripping down on him only make the sound of your ass landing on his thighs even louder as you throw your head back in pleasure and the room is filled with a loud wet smacking sound. 

“Oh sorry,” he continues on like he’s just having an everyday conversation, “I mean most of your classes. Someone beat you in mine.” 

Your blood boils but instead of rising to it and giving him a piece of your mind like you know he wants, you channel that anger into fucking yourself onto him even harder, determined to stop his ability to speak from the way you’re riding him then he’ll shut the fuck up. 

“Jesus,” he finally loses his act and his jaw clenches from how fucking good you feel. 

“Professor Choi,” you hear an annoying perfect voice in the distance. 

“Fuck,” he sits bolt up right and grabs your hips to slow you a little, “baby I think I heard someone.” He whispers. 

But something wicked takes over you. Even more wicked than you expected. Because you knew she’d be here, you knew what was going to happen. But now it’s actually happening, you feel like you want to do one of those overly sinister cackles that villains always do in films whilst you ride his dick. 

You stop bouncing and fully ride him like a woman possessed, his hands trying to slow you but they can’t. This is what you’ve been waiting for, this exact moment is what you’ve been thinking about for two whole days. 

“Professor Choi?” The voice sounds a little closer now, presumably close enough that they’ll soon be able to hear you leaking all over the hot professor's perfect dick and close enough that soon they’ll be able to hear him cum in you and prove once and for all just who he belongs to. 

“_____? There’s someone here!” He whisper shouts, obviously panicking. 

You lean back, your hips still moving quick, your tits boucing and breathing ragged but you’re not too tired to smirk at him. 

“I don’t care.” 

“Professor Choi?” The nearby voice sounds concerned now, like she knows he’s here and maybe realises what he’s doing but not really believing it, “It’s me Jihoo. Are you here?”

You watch, your pussy still slamming down on his dick and making sure all you can hear is his brain working and your sopping cunt, as realisation dawns on Seungcheol. 

“You knew,” he tries not to moan when you clench around him but he can’t help it, you feel too fucking good, “you knew she was going to be here?” 

“Maybe,” You go back to bouncing to make sure she truly hears just how incredible her perfect Professor Choi really feels. It's truly obscene just how loudly you're smacking yourself down onto him. 

“Oh my god baby your big dick feels so fucking good!!!!” You moan much too loudly, trying not to laugh at yourself or his look of horror. “I’m gonna cum professor all over your big dick!!!!!!”

You can’t help yourself and it’s at that moment that Seungcheol’s brain finally catches up with him. Sure, he’d realised you knew she’d be here, that much was obvious. But he was right, you are going to finally put her straight, just not like he thought. He presumed you’d shout, or give him an overly dramatic kiss at the end of class. He didn’t think you’d truly prove to her that he’s yours. 

Something animalistic takes hold of him. You want to claim him so much as yours but he’s never stopped to realise just how much he wants to do the same. He’s spent two years watching this woman upset you, to go out of her way to put the whole class down with her entitled ways. But he’s seen how you’ve doubted yourself every so often because of her. So fuck it, between the pair of you, you can show her that sometimes, well sometimes, she doesn’t always get what she wants. 

“Baby?" He whispers and you look at him straight away, even stopping your over dramatic moaning you were putting too much effort into, “do you want me to untie your hands? You might need to hold on," 

You frown at him but before you can even stop your bouncing he's whipped the tie off, grabbed hold of your hips and slammed you down onto his dick just as he thrusts up. 

“Fucking hell!!!" You're not even trying to put it on now, he's just hit deeper inside you than he ever has in all your years together. 

"That's it baby, does it feel good when I bounce you on my fat dick?” 

You can't answer. If you speak you're certain it's just going to be all wobbly, he's bouncing you around on his dick so much that all you can do is hold on and enjoy the ride. 

“Answer me ______!!!" He says your name so loudly and so proudly that you can't help but clench around him, moaning when a fresh wave of arousal leaves you making everything even louder. 

"Yes Seungcheol i-it feels so good, want you to c-cum inside me,” 

You smile through your ecstacy when he moans so loudly, and so ridiculously, that you're certain someone heard him in the next town. 

"Yeah? Maybe,” he hammers his dick into you again and again, the chair squeaking and brakes presumably holding on for dear life as his hips move painfully quick, "want me to fill you up? How about,” you're just babbling, the only thing you're really focussing on is how fucking good he feels, "I fill you up properly? Make sure nobody ever forgets who you belong to?” 

Fuck do you like that idea, making sure that everybody knows you're each others. 

"I could fuck a baby into you,” 

He could do what?! Yeah you've spoken about kids in the future but never seriously. And not during sex. But why does that turn you on so much? Why are you dribbling down his balls even more and thrusting your hips so they help his movements? 

“We could," he grunts, “turn the spare bedroom into a nursery. Fuck you'd look so good, so full of me all the time. Everyone knowing I did that to you." 

Well you're not sure whether you and Seungcheol will ever have kids but at least you've both discovered your breeding kink together. It's like couples bonding. 

“Imagine it _____," he exaggerates your name again, “everywhere, so full." His lips wrap around one of your nipples, his hips still pistoning into you. 

“Fuck," you cry, “Cheol I'm gonna cum," 

“Me too baby, you feel so fucking good, always so fucking good," 

And with his hands bruising your hips, the idea of him fucking a baby into you and his lips now wrapped around your other nipple, gently sucking on it in complete juxtopistion from how ruthless his hips are, you cum all over his dick. Your body shaking, your voice wobbling from the force he's keeping and any thought of Jihoo completely gone. All you can think about now is how much you want him to cum in you, the idea of him making you his in a whole new way only drawing your orgasm out for longer. 

The groan Seungcheol lets out and the warm, almost homely feeling that buzzes through you when he cums makes the end of your orgasm feel even better. His hips move sloppily as he empties himself deep inside you, his eager mouth still sucking like it's soothing him after one hell of an orgasm. 

But eventually his hips slow, his hands loosen and change to soothing rubs on your hips and you wrap your arms around his neck and gaze at him in awe. 

“That's new." You smile, kissing the tip of his nose. 

“I don't know where it came from," he says softly, “do you think she's still here. I forgot she was there half way through." 

“No idea, don't really care. I love you Seungcheol," you smile, planting a sloppy kiss on his lips. One he happily hums into and wraps his arms around your waist. 

“I love you too, but," he smiles when you frown a little, “can I ask how you intend to get home, are you wearing your coat and heels?" He grins, hoping he's caught you out. 

“You underestimate me so much?" 

“Not at all," he holds you closer and makes you groan, “just want to check whether I need to watch out for any strong gusts of wind." 

“I brought clothes with me." You roll your eyes, though wince slightly when you stand up and he slips out of you, his cum along with it. 

“Hold on, I think there's some paper towels the janitor used to keep in here." 

“You really know how to treat a lady," you muse, watching him stand up and enjoying the way his back looks when he reaches for the top shelf. 

“Hey," he kneels down to clean you up a bit, “what can I say, this old simp likes to be a gentleman." 

Once you're cleaned up, you hand him the clothes you brought for him too. 

“You really did think of everything didn't you?" He smiles as he puts the sweats on you've brought him. 

“That, professor, I did." 

You smugly put the sweater on you've brought and drag some sweat pants on, waiting for him to notice what you're wearing. 

“Are you serious?" 

“What?" You turn around innocently once your much more comfortable shoes are on. 

“That’s the only sweater you could find?" 

“I wear it at home." 

“It's got a hole in it, you never wear it outside the apartment." 

“Well I felt like it." You shrug innocently. 

“You just felt like wearing my old university rugby sweater? Just felt like wearing something that has my name on the back of it?" 

“Yes." You say matter of factly and shove your heels and coat into your bag. 

“I love you, you know." He crashes into you, his arms wrapping around your waist from behind and his chin resting on your shoulder. 

"I love you too. Are you ready to go?” 

"I am. Fuck,” he holds you a little closer, "I can't wait for this new chapter you know. Both of us moving on but together.” 

"You're not annoyed with me?” You ask quietly. 

"Why would I be?” He makes you turn to him, his brows knitted together in concern. 

"For all this,” you gesture to the room. 

"I couldn’t give a fuck about what she heard or what she didn't. She's been a complete ass for two years. She shouldn't be going into people's classrooms when she's not been invited in.” 

"Ok,” 

"______,” he makes you look at him, "I'm not mad. I fucking love you and this whole thing has been so hot. How could I be mad? I get to go home with the woman I love and look forward to better things.” 

"You're sure.” You pout a little. 

"I'm so sure. Now let me treat you to dinner.” 

"We’re hardly dressed for dinner.” You snicker, reaching for your bag. 

"Burgers in the car? We can listen to that podcast you've been droning on about and make out on the backseat." 

"Paper towels and burgers. How can I resist?!” You say sarcastically and laugh when he playfully spanks your ass. 

"Wait,” he smashes into you when you stop at the door without opening it, "do you think she's out there?” You whisper. 

"Isn't that what you wanted?” 

"I didn't think about after. Oh my god do you think she's called the police?!” You whisper shout. 

"It's not illegal for a couple to fuck in a cupboard.” 

"But maybe she knew, we knew she was there.” 

"Again. Isn't that what you wanted?” 

"But isn't that illegal? Having sex in front of other people?” 

"Are you ill?” 

"What?” 

"Why would it be illegal to have sex in front of people? Never heard of a cuck chair? And I didn't say she could come in here. She's barged in on two people having sex. Just chill out,” 

"You won't be saying that from your cell,” 

He doesn't listen, just shoves you out the way with his hip and opens the door. He pokes his head through, checking nobodies there and then opens it a bit wider when he knows it's just you two.  

“See," he holds his hand out for you, “just me, you and our new breeding kink. Oh my god do you think…..” 

"No.” You stop him before he starts, with a finger on his lips. 

"You don't know what I'm going to say.” He mumbles against your finger. 

"I do. And I'm not ordering another strap, we've got a store at this point and I'm not putting shit in it. Imagine the mess.” You walk off and out of the classroom, knowing he'll catch you up once he's got his bags. 

"I give it a week,” he runs up behind you as you leave the building, "and there'll be a delivery man, with another sex toy, at our door." 

"Maybe,” you grumble as you walk together, Seungcheol still with his arm around your shoulder, "she's there.” You whisper, "well don't look idiot!” 

"Well how could I know who you mean without looking?” 

You both glance out the corner of your eyes and the sight makes you feel more smug than you ever have. Jihoo, surrounded by her little minions, clearly furious and all of them glaring over as you and the hot professor strut past them towards the car. Your plan couldn't have worked out better. Now there's no doubt in the world that her hot professor was never hers. He's only ever been yours. And you his. 

"Pleased with yourself?” He grins, kissing you on the cheek. 

"Is she still looking?” 

He glances behind him quickly and nods, just as you both get to the car. 

"Good.” You pull him by his hoody and crash your lips into his, revelling in the way all of their eyes burn into the back of your head and how Seungcheol straight away grabs your ass to bring you closer to him. 

"Just so you know,” you give him one last kiss before he opens the trunk for you to put your bags in, "I'm very pleased with myself.” 

He smiles and closes the trunk but neither of you move just yet. 

"Are you ready to go Mr Head of Faculty?” 

"I think we better had,” he spots someone in the distance, "the Dean is over there." 

You both panic and throw yourselves into the car, laughing to yourselves and knowing that you're driving away from these past two years and into a completely different, more exciting phase in your life. Together. And now everyone knows it. 

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