98 with Sirius x Reader and maybe it leads to some smut?
98 we bump into each other in a place neither of us is really supposed to be
Warnings: filthy nasty smut. fingering and piv sex. sirius calls reader many things - princess and slut, mostly. dom!sirius kinda? implied cheating. some dark undertones if you squint? mostly just bc sirius is kindof a dick in this one.
1,786 words, not proofread lol
also i made the reader a ravenclaw in this, hopefully that's okay. also reader and regulus are dating in this scenario mkay
-----
Half an hour til midnight. Half an hour til Regulus's birthday. You'd gotten a new set of lingerie for the occasion and were getting ready to sneak out of the Ravenclaw common room to the Slytherin dormitory, all the way down in the dungeon level of the school. You knew you'd have plenty of privacy in Regulus's prefect room when you gave him his "gift".
Regulus had been distant and a little cold the past few weeks; you hoped a night spent together like this would smooth everything over between you two.
You looked at your lingerie-clad body in the mirror one last time before pulling your cloak over your shoulders, shivering slightly in anticipation.
Sneaking out of the Ravenclaw tower was easy enough. Known for being the house of responsible students, your section of the castle wasn't patrolled very often.
It wasn't until you reached the lower levels of the castle that you started to worry. With every sound you were sure you'd been caught. Finally, you reached the stairwell that would take you down to the Slytherin common room.
You reached the bottom of the steps without issue, and were just starting down the hall when someone whispered in your ear, "Well, well, well, what do we have here? A little raven out of her nest."
Your spine stiffened and your heart skipped a beat. You'd recognise that voice anywhere. Sirius Black. Internally, you cursed yourself for being so unaware he'd been creeping up behind you.
You whirled to face him. He was carrying that map, that damn map. Regulus had told you about it many times, but you'd never quite believed him.
"Hello, Y/N." He said quietly. His eyes glittered with mischief. "Coming to see my brother? Here to wish him a pleasant birthday? You really should be more careful. Lots of people out lurking the castle at night, and you're all too easy to sneak up on."
You scowled at him. "What do you want, Sirius?"
"I don't want anything. I'm here for the same reason you are, to wish my brother a happy birthday."
You eyed him with suspicion. You had no doubt in your mind that Sirius had been preparing to play some vicious prank on Regulus before you stumbled into his path.
Sirius's gaze fell to your cloak, his eyes lingering on the top button. Something in your stomach tightened. "You know what's funny? You don't seem to have a gift with you, Y/N." He pointed his wand at you; first at your throat and then he lowered it until the tip rested on the collar of your cloak. He hooked his wand underneath the fabric and pulled it to the side, revealing the top edge of the lace that hugged your body.
A hungry smirk fell across his face, but he withdrew his wand, allowing your cloak to fall back into place. "I suppose you're the present then, hm?"
"Fuck you." You snapped, temper rising along with your voice.
That was your mistake, allowing him to get under your skin. Both of your heads snapped up as the sound of hurried footsteps began to echo down the hallway.
Sirius glanced down at the map. You hadn't even blinked when he grabbed you by the arm and began pulling you along with him.
"What are you doing?!" You demanded, trying to free your arm from his grasp.
"It's Filch." He hissed back.
You fell silent. There was nowhere else to go, so you allowed Sirius to continue pulling you down the hall.
A moment later, he pulled a small door open and shoved you inside, hurrying in after you and closing the door with a silence that made you understand how he'd been able to sneak up on you earlier.
You panted, trying to catch your breath. The small storage closet Sirius had pushed you into was dimly lit. A little bit of light came in below the door, but most of the light came from within the closet. Perched on the shelves behind you was a collection of jars and vials containing a fiery glowing substance. Between the shelves and stored equipment, there was barely room for you and Sirius.
Outside, the sound of footsteps grew louder, until it stopped right outside the closet door. Sirius placed a large hand over your mouth, undoubtedly concerned your ragged breaths would give you both away. For some reason, you let him hold his hand there, pressed just hard enough to quiet your breathing.
After a long moment, the footsteps moved away, growing quieter until they faded entirely. Gingerly, Sirius removed his hand from your mouth. For a strange second, you missed the intent warmth of his hand on your face.
In all the commotion, your cloak had slipped off one shoulder, the top button falling open, baring half of your lace-clad chest. You watched Sirius as his gaze as it raked down your body, as if imagining the rest of what remained hidden.
You didn't know what made you do it, but you surged forward and kissed him. Just a peck of your lips on his, so fast he didn't even have time to react or return the gesture.
He looked at you, a rare expression of surprise on his face. Something about it made you feel momentarily triumphant.
But then the surprise was gone, replaced by raw, animal hunger. He spun you around, his movements faster than you could make sense of. One hand encircled your throat, urging your head back so it rested on his shoulder. His other hand trailed down the front of your cloak, deftly unbuttoning it until it fell to the floor.
"Look at you." He hissed in your ear, his hot breath fanning across the side of your neck. "All dressed up for my brother. Such a pretty little slut."
His fingers were raking down your body, stopping to circle your breasts, pinching at them over the thin fabric. You couldn't help the little whimper that fell from your lips.
"Shh. You'd better be fucking quiet now. I've worked so hard to keep us both out of trouble tonight, you know." His hand tightened ever so slightly around your throat, a silent promise. Instinctively, you pressed your body back against him, in an effort to lessen the pressure on your throat. He let out a quiet hiss as you felt how hard he was against your back.
His hand fell between your legs, stroking you over the fabric. "You've soaked through your pretty little lace panties, love." Sirius whispered.
A flush warmed your face, and you rocked your ass rhythmically against him in retaliation. A low groan escaped him, and you smirked to yourself.
He pushed the fabric of your panties to the side, circling your clit with his fingers. The pressure nearly made your knees buckle. Sirius let out a low chuckle, and without warning, he plunged two fingers deep into your pussy, immediately starting to pump them in and out at a merciless pace.
One of your hands shot out, looking for something to grasp onto. You found the closet wall, pressing your palm flat against the cool surface as Sirius continued to curl his fingers inside you.
Your other hand dropped to grip his wrist, though this did nothing to slow his movements. If anything, it urged him to move faster, pressing down on your clit with his thumb.
"You gonna come, angel?" He asked as you began to clench around him. "Gonna come on my fingers like the dirty little slut you are? That's right, come for me."
Your mouth fell open and he used the opportunity to move his hand from your neck, instead using it to grip your jaw as he plunged his thumb into your mouth. You closed your lips, sucking his finger gently as he swore under his breath. He pushed your jaw to the side, baring the side of your neck to him as he kissed and nipped at the sensitive skin there.
As you came down from your high, he pulled his fingers from your pussy and turned you back around so you were facing him. For a second, he just looked at you. His pupils were wide and the smell of sex hung in the air. And then he was kissing you, his hands trailing down your body. He hooked a thumb into the waistband of your underwear and pulled it down until it fell to the floor. His hands rested on your ass and you let him push you backwards until you were pressed against the wall of the closet.
He kicked his pants off and grabbed onto your thighs, hoisting you up so your legs were wrapped around his waist, your back pressed against the wall. It seemed effortless as he adjusted his grasp on your thighs, holding you up as he lined himself up with your entrance. You watched, mesmerized, as he pushed into you. When his hips were flush against yours, he began to trust against you.
"I can feel you clenching around me, princess." He said. "Are you enjoying this? Do you enjoy getting fucked in secret by your boyfriend's brother?"
You whimpered in response. His thrusts slowed. "Answer me." He said, his voice changing dramatically from the smirking tease it had been a moment before. "I asked if you like getting fucked by your boyfriend's brother like the dirty little slut you are."
"Yes." You said, voice coming out breathy. "Yes, I like it."
He snapped his hips brutally up into you. "That's better." He said, and resumed his fast pace.
As he continued to fuck you, Sirius buried his face in your shoulder, his breath coming out is sharp pants. Occasionally he would bite at your soft skin.
"I'm getting close, princess." He said. "I'm gonna come deep in your pretty pussy. Next time my brother fucks you, I want you to remember that I got to you first, yeah?"
"Uh-huh." You managed, so close yourself that you could barely form words.
"There's a good girl." Sirius said. "Can feel you getting tight around me. I– Oh fuck–" His sentence was cut short by his own low moan as he came. You could feel the warmth of his cum as his cock twitched.
He stood there like that for a moment, catching his breath. Before he set you down gently, his eyes found yours. He kissed you then, in a gesture that was almost sweet.
But when he pulled away, the glint had returned to his eye. "Next time you want to go for a nighttime romp, why don't you sneak on over to the Gryffindor common room? I promise I'll keep you entertained."
