A/N: This is literally the first NSFW anything I've written, so PLEASE let me know what you think! I'd love to improve in any way I can. No real warnings apply to this, there's some light bondage, degradation- nothing too crazy.
The heels of your boots clicked down the hall of the dungeons, matching the pace of your racing heart while you made your way to Professor Snape's office for the sixth night this week. You could have sworn that he was making up work for you to do as a small way of torturing you for merely existing. But you had decided that you would not give up, not this far into working with the potions master. This was your second year as his assistant at Hogwarts and it was already proving to be harder than the last.
The school year started nearly a month ago. At first, he ignored you much to your chagrin. You thought that after the events of last year, you had finally moved past him brushing you off and sneering at you. That maybe your working relationship could now at least be civilized. You shuddered at the thought of last year - images of Severus limping into your office one night with desperation in his eyes. You had stood from your desk, looking down to see a gash across his leg that was bleeding profusely. You still weren't sure why he hadn't gone straight to Madame Pomfrey to tend his injuries after he had thrown himself in front of Professor Lupin when he had tried to attack students as a werewolf. You tenderly treated his wound with healing magic, potions and salves before finally helping him to your bed. You stayed up all night monitoring him - you knew he would be fine, but you worried.
After that, he had acted kinder towards you. It was his way of thanking you. But then you left for the summer break and everything had returned to normal when you arrived two weeks before term started. Determined to break through his rough exterior and see that side of him again, you had decided to keep pressing him, continued to be kind to him. You were resolved to become his respected colleague. You hoped to be his friend. And the butterflies you got when touching him, lightly caressing his thigh as you applied a healing salve to avoid scarring - the small grunts he made that didn't entirely sound like they were from pain - electricity shot down your spine and to your core... Maybe you wanted to break through to him in deeper ways. But he hadn't acknowledged anything that passed between you, and now you were back to square one.
Until you had called him out in front of the second years in class six days ago. He had disrespected you in front of them and you had hit your boiling point. His eyes turned black, angry, and he dismissed the glass with a low and dangerous "Get. Out." He brushed passed you then, storming out of the classroom leaving you to clean up and teach the next class. You received an owl at dinner that night with a letter scrawled out to you.
My office, 7:00. Do not be late.
And it had been so every night since - except tonight. Tonight, the note said to arrive at 9:00. So you did, at 9:00pm sharp, and entered the open door to his office with your shoulders back, chin high. Whatever tedious task you were assigned tonight would be done without complaint.
"Shut the door," Snape said without looking up from the homework on his desk.
You did as requested and approached his desk quietly. Sat in the chair across from him. Waited.
Nothing. You sighed and sat back in your chair, crossing your legs. His eyes snapped up from his grading at the sound and lingered on your face before his gaze slowly went down to your chest, your legs, then back up again.
"It's rude to stare, sir," you leaned forward again and propped your elbows on his desk and smirked. "What do you require of me tonight?"
"I would like," he finally replied, "for you to transfer the ingredients from those jars to those jars." He waved at the ingredients across his office and resumed grading the papers. You scoffed and didn't move.
"I believe that is all the instruction you require, is it not, Miss Y/N?"
"And are you incapable of standing to complete this task?"
"Then why are you. still. sitting. here?" Each word punctuated, venomous.
"Because this is a foolish task, Professor." You had spent the past six nights completing similar tasks, and when you had finished one there was another one lined up. It was a waste of time. "Do you not think that I am more than capable of assisting elsewhere?"
Snape slammed his hands on his desk and stood up, the legs of his chair scraping the floor as it flew back.
"Do not speak out of turn! It may have escaped your notice, but you are my assistant, you are here to assist me." His brows were furrowed together and he leaned over his desk towards you.
"That may be true, sir, but it may have escaped your notice that I am qualified to do more than just silly tasks to pass the time. Why do you insist that I am here as just some fucking girl that you can ogle and abuse your power on. Does the potions master title feed your ego that much, that you feel the need to degrade me at every chance you get?"
Snape's eyes turned dark with anger as you spoke, but you didn't give a shit. You were tired of this, past your limits of what you could take and still respect yourself. If he wasn't willing to work with you, respect you enough to lend you even a speck of decency, then you didn't know where you were going with this. When you were finished talking, he recoiled away from you with a look of disgust.
"That you have the audacity," Snape replied with a low voice, his fingers dragging on his desk as he began walking around it, "to speak to me in such a way-"
"The same could be said for you, Professor," you cut him off. You lifted your chin into the air as you held his eye contact, but backed away as he got closer to you. With every step you took back, he followed.
"You insolent little witch!" Snape leaned down to your eye level as he spoke. "Always parading around like you own the place, demanding more respect when you have not earned it!"
"Have I not?! I've been working as your assistant for a year now, and yet you still treat me like a bug on the bottom of your shoe. And after I helped you last year, I thought-"
"Thought what, exactly? That I would bow to you, my savior?"
"No. That maybe things would change, that you would be able to acknowledge whatever this tension is between us because I know that there is more to it than just disdain. And you are too cowardly to admit it." You took another step back, turning to the door. "Fuck you, Severus. I don't know why I've bothered."
You reached the door and opened it, prepared to exit, but you heard his footsteps approach you quickly. His hand reached around your head and slammed the door shut, the other arm coming around your other side to lock it. You were pinned in between him and the door, heart beating in your throat, and you spun to face him. He leaned down once again to eye level. You could feel his hot breath against your neck and the smell of him... Merlin, did he smell divine.
"Fuck you, she says. Yes, that's exactly it, isn't it? Don't you dare act as though I am the only one ogling here, Y/N. Yes, I heard those filthy thoughts when you mended my leg. I felt your desperation seeping from you." He stood straight then and grasped the back of your neck, dragging you beside him back to his desk. "Every day I must suffer those thoughts."
He shoved you towards the desk and spun you around, facing away from him. His hand pushed you down so your face was pressed into the cool wood.
"Is this what you want, Y/N?" He pressed himself into your behind and you could feel his length against you. "Is this what you have been so desperate for?" You tried to stand back up but he pushed you down again. His belt rattled as he took it off, as he tied your hands with it behind your back.
"So desperate for my approval, my respect, my cock." He chuckled lowly. You felt your skirt being lifted, exposing your ass to him. Heat rose in your face. "Just lovely," he praised as his calloused hand rubbed the now exposed skin, "and all for me."
He leaned down to your ear and whispered, "Count."
You tried to turn back to look at him, to ask what he meant, when his hand came down and made sharp contact with your skin.
"Severus, please," you yelped as his hand came down again.
"This is what disrespectful witches deserve," he sneered at you as his hand came down again and again. By the tenth slap you were whimpering. "Enjoying this, are we?"
Snape pulled you up by the belt just enough for him to reach around and rip open the buttons of your blouse. His hand went under your bra and pulled your breasts out before he roughly pinched your nipples between his thumb and forefinger. He pulled you up some more, giving him leverage to reach around to your heat. His fingers slipped between your folds and began rubbing circles around your clit.
"Already so wet for me," he whispered into your ear. He nibbled at your neck and earlobe. "I need you to tell me you want this."
You nodded eagerly, but it wasn't enough. He pinched your nipple hard.
He pushed you back down onto the desk and lined himself up with your entrance before pushing his cock in, not giving you time to adjust to his length. You both let out a low moan as he slowly pulled back out, quickly plunged back in.
"My little slut," he grunted as he pushed all the way into your dripping cunt. "You belong to me."
"I belong to you." You breathed out. With every pump, your hips hit against the desk and you let out a cry of pain and pleasure. Severus splayed his fingers in your hair before grabbing onto a handful and pulling it. His his snapped into you, quicker and quicker.
"So tight for such a little slut," grunted out between thrusts. "Is this what you wanted? Taking my cock on my desk, writhing under me."
You moaned back in response, feeling yourself getting close. Teetering on the edge of coming, you clenched around him.
"You don't come until I say you can come, do you understand?"
You struggled not to as his breathing became erratic as his hips kept snapping against you, his balls slapping against the back of your thighs. He once again reached around to rub circles around your clit. Your hands grasped the edge of the desk, knuckles turning white as you groaned from the pleasure. His low moans filled the air, making you throb on his dick even more, your body threatening to tumble over the edge. The heat was rising in your core, the familiar feeling becoming overwhelming.
"Come for me," he demanded. Your body pulsed with the waves of your orgasm as you climaxed, your walls slamming down around his cock. You cried out with each wave of pleasure.
"What a good little whore, coming all over my cock," he praised you as you came down from your climax. He kept pumping into you but you could feel he was close.
He pulled out of you after a few more thrusts, pulled on the belt around your hands and dragged you to the floor. He pumped his cock in one hand, the other on the desk behind you, before streams of cum shot out onto your face and dropped down onto your chest. He tucked himself back into his pants before wiping up his cum with his thumb and wiping it along the inside of your bottom lip, marking you.
"Clean yourself up and get out. I will see you tomorrow night at 9:00."
