#student money | Explore Tumblr posts and blogs

dilfismz · 2 months ago

Note

Hi! Can you write jealous professor dom!cho sangwoo x student sub!reader. Can you make sangwoo become real mad and some spanking too? Thank you so so much 🥹🥹

Mine

Summary: Turns out Professor Cho doesn’t like it when stupid young boys touch what’s his.

A/N: there are a few flashback scenes in order to build a backstory so don’t be confused!

Warnings: age gap, inappropriate teacher/student relationship, spanking, some degradation?, p in v, no prep (Sangwoo is desperate), dom/sub dynamics, and hair pulling.

In all honesty, you and Professor Cho had become close by complete accident. If you could even call it close…more so acquainted. You could recall every detail of your night spent together as if it had just occurred. Every single time you step foot into his lecture hall you can’t help but reminisce.

⋆ ──── ❍ Δ □ ──── ⋆

The bar was quiet that night, many students in their dorms studying for finals. Luckily for you, yours had concluded in one long, godforsaken day. It was tough but the reward was getting to celebrate the end of the semester early.

Sliding into a seat with your friend you spot him. He was seated a few spots down, leaning casually against the bar. He looked out of place in his crisp, tailored shirt and sharp jawline—older than most of the patrons and far more composed. His presence seemed to draw attention without trying, though he didn’t seem interested in anyone else around him.

You weren’t sure why you caught his eye, but you did. His gaze lingered on you for a moment before he spoke, his deep voice cutting through the noise.

“Not a regular here, are you?”

You smiled faintly, shaking your head. “Does it show?”

“Just a little,” he said, taking a sip from his glass. “You seem…young for this crowd.”

The comment made your cheeks flush slightly, but you held his gaze. “Maybe. But you don’t exactly blend in yourself.”

He chuckled, low and warm, and moved to sit closer. “Fair enough. I’m Sangwoo.”

You gave your name, and from there, the conversation flowed with surprising ease. You told him about your studies, your aspirations, and the stress that had driven you here tonight. He listened intently, asking thoughtful questions that felt more probing than casual small talk.

“I have to say,” he murmured at one point, leaning in just slightly, “I don’t usually find myself talking like this with someone… your age.”

You shrugged, trying to ignore the way your pulse quickened. “Maybe age doesn’t matter as much as you think.”

He studied you for a moment, his gaze flicking to your lips before returning to your eyes. “Maybe.”

The air between you shifted, heavy and undeniable. When he suggested leaving, you didn’t hesitate.

The night blurred into stolen kisses in the cab, whispered words, and the heat of his hands on your skin. You fell into his bed with reckless abandon, the difference in your years forgotten in the haze of passion.

The next morning, sunlight streamed through the curtains, forcing your eyes open. The unfamiliar room was quiet, save for the soft sound of breathing beside you.

You turned your head to see Sangwoo lying on his back, his arm resting over his eyes. The sharp lines of his face were softened by the light, but there was a tension in his expression that hadn’t been there the night before.

“Good morning,” you said quietly, unsure of what else to say.

He let out a soft sigh, finally lowering his arm to look at you. His eyes were darker now, clouded with something that felt like regret.

“This… probably shouldn’t have happened,” he said, his voice low.

The words stung, even though you’d expected them. “Why not?”

He sat up, running a hand through his hair. “You’re young. Too young to be tangled up with someone like me.” His tone wasn’t harsh, but there was a firmness to it that made your stomach twist.

You sat up too, pulling the sheet around you. “You didn’t seem to mind last night.”

“That was a mistake,” he said, glancing at you briefly before looking away. “I should’ve known better.”

The silence that followed was heavy, the warmth of the night before replaced with a cold, sinking feeling. You wanted to say something, to argue that you were old enough to make your own decisions, but the look on his face stopped you.

“I’m sorry,” he murmured, standing and reaching for his shirt. “You’re… incredible. But this can’t happen again.”

As he moved about the room, dressing and avoiding your gaze, you couldn’t help but wonder if you’d ever been more than a fleeting distraction to him.

⋆ ──── ❍ Δ □ ──── ⋆

Another thing you always thought of when you’d step into Professor Cho’s room is the moment you’d realized just how disastrous your night together actually was.

The first day of the new semester carried the usual energy—a mix of fresh starts and quiet dread. Students milled into the lecture hall, some chatting excitedly, others scrolling through their phones or sipping lukewarm coffee. You were somewhere in the middle, adjusting the strap of your bag as you stepped into the massive room.

You hadn’t given much thought to your schedule beyond the requirements you needed to fill. This class—some upper-level finance course you had reluctantly signed up for—was just another stepping stone toward your degree. You were more concerned with surviving the workload than anything else.

That was, until you looked up.

Your heart nearly stopped.

There, standing at the podium, flipping through a stack of papers with an air of quiet authority, was him.

Cho Sangwoo.

Your throat went dry.

For a second, you thought you had to be mistaken. But there was no mistaking him—not the sharp jawline, not the dark, intelligent eyes that had lingered on you once in the glow of a streetlamp, not the hands you could still feel on your skin if you let your mind wander too far.

You froze mid-step, the chatter of the other students fading into white noise. The last time you’d seen him, he had been pulling his shirt over his head in a dimly lit bedroom, his words clipped, his expression guarded.

“This can’t happen again.”

And yet, here you were.

And here he was.

As if sensing your gaze, Sangwoo glanced up from his notes.

The reaction was instant.

His confident posture faltered, his fingers tightening slightly around the edges of his papers. His brows lifted just barely before his eyes widened in unmistakable shock. You saw the exact moment recognition hit him, watched the composed, professional mask he undoubtedly wore every day crack—just for a second.

A blush rose to his face.

It was slight, barely there, but enough for you to notice. Enough for you to know that despite his careful words that morning, despite whatever lines he had drawn in his mind between you, the sight of you standing in his lecture hall had caught him completely off guard.

The confident, articulate professor—who had surely done this a thousand times, who commanded rooms full of students without hesitation—had lost his composure.

Your stomach twisted.

For a fleeting moment, it felt like you were back in that dimly lit bar, your bodies too close, your words laced with the kind of reckless flirtation that had led to this. The memory burned through you so suddenly that you were sure it showed on your face.

But then, just as quickly as the moment had come, you watched him shove it back down.

Sangwoo cleared his throat sharply, turning his attention back to his papers. The color in his face faded as he schooled his expression into something unreadable, his professional demeanor snapping back into place like a steel trap.

But you had seen it.

You had felt it.

And now, you had to sit through an entire semester pretending it had never happened.

Swallowing hard, you forced yourself to move, slipping into a seat near the middle of the lecture hall. Around you, students continued their chatter, completely unaware of the silent war raging inside your head—or his.

Sangwoo took a breath, straightened his tie, and finally spoke. His voice was steady, controlled.

“Good morning. Welcome to Financial Strategies.”

If you hadn’t seen the way his hands curled slightly against the podium, you might have believed he was completely unaffected.

But you had seen it.

And you weren’t sure either of you would be able to ignore it.

That day, after class ended you sat frozen in your seat, your fingers gripping the edge of your desk as if that could steady the storm of emotions brewing inside you.

Sangwoo hadn’t looked at you once throughout the entire lecture.

Not directly, at least.

Instead, his eyes had skimmed over you like you were just another student, his voice measured, his posture rigid. But there were moments—fleeting, barely-there moments—where his fingers tensed slightly on the podium, where his breath hitched in the smallest, most imperceptible way before he forced himself forward.

And now, as you remained seated while the rest of the students shuffled out, he still wouldn’t meet your gaze.

“Stay after,” he had said near the end of class, his voice neutral, yet somehow sharp.

You knew this conversation was coming. There was no avoiding it.

Sangwoo stood by his desk now, organizing papers that didn’t need organizing, straightening his laptop screen only to close it again. It was almost frustrating—watching him fidget with anything but you.

Finally, he exhaled through his nose, as if bracing himself.

“If you wish to remain in this class,” he started, his voice clipped, “you will forget about what happened between us.”

You swallowed, gripping your bag strap tightly, but said nothing.

He continued, his expression carefully blank, though you could see the tension in his jaw. “It was… inappropriate. A mistake.” His fingers curled around the edge of his desk, the only sign that his control wasn’t as steady as he wanted it to be. “And it cannot affect your education.”

Your throat felt tight.

He was speaking to you as though that night had been some careless accident, as though it hadn’t been charged with something real. And yet, even as he spoke, his voice was too deliberate, too forced, like he was convincing himself as much as he was convincing you.

But you didn’t miss the way his fingers twitched slightly against the desk.

Your gaze dropped to his hands—the same slender hands that had once roamed your body, tracing paths of fire along your skin.

You could still feel them if you thought about it long enough. The way they had tangled in your hair, how his fingertips had brushed over your bare waist with aching slowness, how they had tightened possessively around your wrist just before he kissed you—

“Are you listening?”

Your head snapped up.

Sangwoo was watching you now, his brow furrowed slightly, his lips pressed together in a thin line.

You nodded, trying to ignore the heat rising in your face.

He exhaled sharply, dragging a hand down his face before crossing his arms. “Good,” he muttered. “Because I can’t have distractions in my classroom. Whatever… that was, it’s over. Understood?”

His words were cruelly impersonal, but his body language betrayed him. The stiffness of his shoulders, the way he seemed almost restless standing still, as if part of him wanted to move, to do something else.

You wondered if he was remembering it, too.

The weight of him pressing you into the mattress. The way he had looked at you, his usual self-control slipping with every kiss, every touch.

You sat up a little straighter, ignoring the pang in your chest. “Understood,” you said quietly, though the words felt like a lie.

For a moment, he didn’t move.

His fingers tapped once against the desk. Then again.

Then, as if snapping himself out of something, he turned away, collecting his things with more force than necessary. “You’re dismissed,” he said, not looking at you.

You hesitated.

But there was nothing left to say.

So you grabbed your bag and walked toward the door, feeling his eyes on your back even though he had told himself not to look.

————-

Now here you are today and you have done exactly what Sangwoo asked.

For months, you kept your distance, pretending as though nothing had ever happened between you. No lingering glances, no hesitation when he called on you in class, no trace of the night you had spent tangled in his sheets. You became cold, detached—indifferent.

And it was driving him insane.

At first, he convinced himself that this was what he wanted. That this was the right thing.

But then Jisoo happened.

A boy your age. Bright-eyed, eager, always quick with a joke that made you laugh—actually laugh. You had never laughed like that in his class before. Not when you were with him.

Sangwoo ignored it at first.

But then it happened again.

And again.

Soft whispers shared between the two of you, your heads leaning close as if nothing else in the room existed. His blood simmered every time Jisoo touched your arm, every time he caught you smiling at him—every time he saw you looking at Jisoo the way you used to look at him.

But today was the worst of it.

Today, Jisoo had whispered something in your ear, and your face had gone warm—cheeks flushed, lips parting just slightly in surprise before you giggled.

Sangwoo gripped his pen so hard it nearly snapped.

The moment class ended, his voice cut through the murmurs of students packing up their things.

“Stay after.”

Jisoo glanced at you, curious. You barely reacted, nodding as you finished gathering your notes.

The last student filtered out.

The door clicked shut.

Silence.

Sangwoo remained standing at the front of the classroom, bracing his hands against the desk, his head tilted downward. You could see the tension in him—the way his fingers curled, the way his breaths left him in slow, controlled exhales.

You knew this was coming.

You waited.

And then, finally, he spoke.

“Tell me,” his voice was low, measured. “Do you plan to seduce him the way you seduced me?”

Your heart stuttered.

The accusation hung heavy between you, thickening the air, making it harder to breathe.

“What?”

Sangwoo lifted his gaze, and for the first time in months, his carefully constructed mask had cracked.

No indifference. No feigned professionalism. Only raw frustration—barely-restrained jealousy simmering beneath the surface.

He took a step forward, slow and deliberate.

“You heard me,” he murmured, his voice dark. “Is that your plan? To make him desperate for you? To make him think, even for a second, that he can satisfy you the way I did?”

Heat pooled in your stomach, but you forced yourself to hold his gaze. “That’s not—”

He scoffed. “Not what?” Another step forward. “Not true? You don’t think I see the way he looks at you? The way you let him lean into you, whisper in your ear?”

His jaw clenched.

“Do you think he can touch you like I did?” His voice dropped lower, barely above a whisper. “Think he can even attempt to please you?”

Your breath hitched.

Your fingers curled into fists at your sides, knuckles whitening. “I don’t know what you’re talking about,” you forced out.

His lips quirked up—not in amusement, but something far crueler.

“Liar.”

Your stomach flipped.

You hated how easily he unraveled you.

Sangwoo exhaled slowly, dragging a hand through his hair. “I shouldn’t care,” he muttered, more to himself than to you. “I told myself I wouldn’t.”

You swallowed hard.

“But then I see you with him,” he continued, his voice quieter now. “I see you laughing, smiling, and I—” He cut himself off, exhaling sharply as if disgusted by the confession sitting on his tongue.

Your pulse pounded in your ears.

“You’ve been punishing me,” he murmured. “All these months, Ive been trying to forget, trying to pretend it never happened—but it did. And here you are pulling this shit right in front of me.”

His fingers twitched.

“And it still matters to you…”, you intended to ask but it came out more like a statement.

Sangwoo inhaled sharply, and before you could react, his hand shot out—grasping your wrist.

Your breath caught.

His fingers, long and slender, wrapped around your skin. Not tight. Not pulling. Just holding.

A mistake.

A reckless, dangerous mistake.

But neither of you moved to stop it.

“You don’t get it,” he murmured, his voice lower, almost pained. “I broke the rules for you once.”

Your throat went dry.

His fingers slid down, tracing your palm before hesitantly releasing you.

Then, barely above a whisper—so quiet you almost missed it—he admitted:

“I think I’d break them again.”

Your stomach clenched.

Sangwoo exhaled slowly, looking at you as if he were already regretting saying it out loud. But it was there now. It couldn’t be unsaid.

For the first time in months, he wasn’t telling you to forget.

He wasn’t telling you to leave.

Instead, his voice was quiet. Measured. Unsteady.

“Stay, it’s your turn to be punished.”

You take a tentative step in his direction, testing the waters. Sangwoo blinks slowly, looking you up and down, “You stay there”, he commands while walking to the lecture hall door. He locks it with a flick of his wrist and returns.

He sits on his chair behind the large desk he often spends hours sitting at. He spreads his thighs, patting them expectantly.

You take this as a sign to straddle him but he immediately grunts in dissatisfaction. “No, bend over my knees, face down ass up”.

You flush at the command, all self respect fleeing your body as you comply without a second thought.

Tch tch

He clicks his tongue mockingly, all while lifting your skirt up to expose your plump ass, barely covered by a tiny thong.

“Now did you wear this for me or him”, Sangwoo asks, a scowl etched onto his features.

“You Sangwoo, always for you-”, before you could finish your sentence a loud smack echoes throughout the lecture room. Before you can even register the pain another red hot slap lands on your bottom, leaving you breathless.

“It’s sir”, he commands, a shit eating grin already overtaking his features.

“Y-yes sir”, you respond.

“Good fucking slut, finally you do something right. Maybe I should’ve done this right away, then we never would have had that silly little problem huh?”

You simply nod, his words going in one ear and out the other. Sangwoo pulls your hair harshly, forcing your head back to look at him.

“Speak when you’re spoken to”, he commands, his other hand landing another firm slap to your stinging ass.

“Yes sir-“, you moan as he kneeds the sensitive flesh, “-wish you would’ve done this sooner.”

He nods in approval, forcing you off of his legs and pushing you against his desk.

You can hear him unbuckle his belt and all but shake with anticipation. You’ve waited oh so long to feel him again.

Suddenly his swollen tip is prodding at your entrance, your thong pulled to the side. Sangwoo lets out a heavy sigh and declares, “I’ve waited way too damn long to do this again…now tell me have you been whoring around campus or is the last time your pussy got stretched with me?”

“Y-you sir, haven’t done anything since that night”, you splutter out, backing up into him, hoping he’ll just push in already.

“Good girl, that’s what I like to hear”, he says right before completely bottoming out in one harsh thrust.

Sangwoo doesn’t start out gentle, he keeps thrusting into you slowly but oh so roughly. You swear you can feel him reaching spots even he didn’t hit last time.

Your eyes roll into the back of your head as his hands grip your hips with a bruising force. He scoffs at your desperate mewls, “I won’t last long sweetheart so you’re gonna take what I give you and be grateful, ya?”

“Yes sir”

Sangwoo can feel his glasses slipping down his nose as his pace quickens. The entire room is filled with the sound of skin slapping against skin and its filthy.

“Please don’t stop sir I’m close”, you beg as you feel that all too familiar feeling within you.

He doesn’t stop. His hands gripping you even tighter as he grits his teeth, cock twitching as your gummy walls suck him in.

“Fuck, it’s like this pussy was made for me, can’t believe I stayed away for so long”, he gasps out.

That’s all the praise you needed to reach your peak. Your walls spasm around Sangwoo and he continues his assault on your insides, coming to an abrupt stop as you feel his warm seed fill you up.

The both of you are a panting mess and he runs his hands through his own hair, pushing him glasses back up his nose.

When Sangwoo finally pulls out he sighs and looks at your pathetic form in front of him.

“Clean yourself up and we’ll have a serious conversation about how this arrangement is gonna work.”