Chapter Text
Remus doesn't get out of his bed on Sunday, he's afraid of Sirius—like really scared to his core. The images of him licking Sirius boots are burned inside his eyelids. He's having nightmares about him again and again. He doesn't see Sirius on Monday, not even in class, Sirius didn't attend a single one of them, he's silently praying this continues everyday. But that isn't possible is it?
He spots Sirius on Tuesday at breakfast, but luckily he's sitting with his back to the Gryffindor table—maybe he's still angry, Remus pushes the thought away as soon as it comes— Sirius doesn't have the right to stay mad when he keeps moving the bar of humiliating Remus lower and lower. Remus feels he's lost all his self-respect by worshipping Sirius' boots.
Sirius doesn't try to find him on Wednesday and Thursday, even on Friday he's sitting with his back facing Remus. Remus hopes Sirius has given up on him. He feels lucky— maybe Sirius regretted fucking a filthy werewolf afterall and decided to pick someone else to torture.
His luck runs out when he's paired with Sirius for his last class of the day— it's Potions and Professor Slughorn has a tendency to assign inter-house partners. Remus' breath goes very still the moment Sirius comes up to stand beside him. Remus slightly turns his head towards him to judge Sirius expressions— his face is completed schooled, like he has practiced this expression for years, his eyes doesn't have the wicked glint, he holds his head high like the fucking royalty he is.
Remus looks away so quickly he feels the world spin for a moment when Sirius looks back at him, Remus picks up random ingredients from his table and starts mixing them, anything to keep himself occupied and away from Sirius' gaze.
Fortunately Sirius doesn't speak the entire time, he doesn't even ask to pass any ingredients, he just Accios them with his wand. Remus wants to sing the moment Horace ends the class and he gets to run or he was about to run?
Sirius grabs his wrist and turns Remus towards him, crowding his space and whispering in his ear, "Come to our room tonight." His husky voice sends a shiver down Remus' spine.
Sirius gathers his things and leaves with Regulus who was giving him curious looks. Remus stares into nothingness for a complete ten seconds before Peter's voice jolts him out of his thoughts and they leave for their dorm together.
Remus feels every part of his body shaking as he steps into the room. He spots Sirius lying back on the bed comfortably with his wand twirling in his hands. His face twists into an evil smirk when he sees Remus standing in front of the door. He rolls on his side and supports his head with his hand. "Come closer." he orders. Remus crosses the distance in five wide strides, he balls his hands and clenches his jaw to hide the nervousness simmering low in his abdomen.
Sirius notices his hard expression as Remus approaches him and starts "What? Are you still thinking about what happened in the library?" Remus doesn't reply, he physically cannot find his voice.
Sirius gets behind Remus in an instant and snakes his arm around his waist pressing his lips to Remus' ear, "You're my toy Remus, how much time do you need to accept that? I can play with you anytime and anywhere, if I didn't mention it before." His voice is so dark Remus could feel dark magic radiating out of it.
"Undress and get into position." Sirius commands. Why does he always make Remus pose like a dog? He can fuck him against a wall or something right?
Remus removes all his clothes and climbs on the bed again, facing the headboard. He feels the bed dip as Sirius climbs behind him and settles right behind his ass. Sirius places his cold palms flat against his ass-cheeks and digs his nails into them. Remus hisses at the sudden piercing feeling. Suddenly he feels a sharp pain on his left ass-cheek, he whimpers and looks back to see Sirius sitting fully clothed with his mouth on Remus' ass, he fucking bit him.
"What the hell? Are you an animal?" Remus snaps because he genuinely wonders that now. Sirius gets back up and looks straight into Remus' eyes, brings his left hand up and delivers a sharp spank right where he just bit him. "OUCH!" Remus shouts out because not only was that unexpected he fucking watched Sirius spanking him.
Sirius breaks into a smile which is all teeth when he notices a red handprint slowly blooming on Remus' arse. "Spread your cheeks for me." Remus' doesn't know if this is the magic obeying him or it's his own resignation. He lets his shoulders and face press against the mattress and hold both of his ass cheeks, spreading them as far as possible and presenting his hole to Sirius like a showpiece. He doesn't like this position because he cannot see what Sirius is trying to do, the anticipation always sets him on edge.
He feels a dull and blunt thing pressing into his hole, it isn't soft like Sirius fingers, he clenches his hole tightly when he realised Sirius is trying to push his wand into him. "Sirius what the fuck you're not going to fuck me with your wand, I'll kill you!" Remus' voice is slightly muffled because of the pillow.
"Hush puppy, don't speak to your daddy like that, and I'm just trying a new spell on you." Sirius pushes his wand just two inches in and mutters a spell. Remus' mouth fell silent again, he hated this feeling, hates lying there helpless while Sirius took his voice.
I'm his lab rat now, the thought alone is traumatizing for him. He feels his insides getting wet after Sirius pulls his wand back. Sirius then pushed one finger into Remus easily without any resistance. Remus gasps low in his throat.
"It's a lubrication charm, I don't like wasting my time with that lube bottle. I don't even have to cast it twice, the amount increases as the body requires." Sirius mutters while fucking one finger in and out of Remus. Remus vaguely remembers Sirius talking about sex magic, he must've learnt this spell over the days he spent not fucking Remus.
He adds another two fingers inside Remus stretching them wide. "You can speak now, I want to hear you while I do this." Sirius commands again. The last time Sirius said "while I do this" he fucked Remus' throat raw until it bruised, Remus thinks Sirius loves keeping him in the dark, purposely avoiding giving him details.
"What are y-you doing?" Remus half moans when Sirius starts scissoring him, hoping he would get some kind of hint.
"Like I said, playing with my toy." Sirius speaks flatly. And Remus presses his forehead on the mattress muffling a moan. Why did he even try asking him.
Remus tenses when he feels Sirius' fourth finger pressing into his hole, the stretch is slightly too much for him and he feels the painful sting. "Wait. Stop. I'm stretched enough, just fuck me already." he tries to sound angry but what comes out is a desperate whimper.
"Aww, look at you whimpering like a back alley whore, too desperate to get fucked by my cock, well much to your disappointment, I'm not going to fuck you tonight." Sirius replies casually.
"Then what- ugh fuck.." Sirius found his prostate "...are we doing?" He pants out as best as he can with his forehead flat against the mattress.
"Playing."
Remus is ready to let out a snide remark but his eyes widens as he feels Sirius' thumb nudging his rim now. He pushes himself up on his hands and tries to get away, "No. Stop. You are trying to put your hand inside me." Remus begs with sheer panic clearly visible in his voice.
Sirius' left hand is at the back of his neck at an instant and pushes his face down on the mattress again, where it was resting earlier. Remus is still struggling against his hold but his body melts completely as he hears Sirius command him to stay still. "For your information it's called fisting." Sirius laughs at the end of his sentence.
Sirius gets back behind Remus and pushes his thumb in, waiting for a second before he starts pushing the widest part of his duck shaped hand past Remus' hole. "No no please I can't take it, you'll tear me!" Remus begs helplessly, he scrunches his face as he feels himself stretching impossibly wider, pain and pleasure mingling together.
"Relax your hole. You will take it, the lube will help." Remus immediately feels his body respond and his muscles relaxed, Sirius takes the opportunity to push his entire hand up to the wrist inside Remus. Remus screams gibberish when he feels Sirius' hand ball into a fist inside him, tears start rolling down his cheeks and he keeps moaning loudly with every in and out of Sirius' fist.
"Ah- hng- ah" he whimpers every time Sirius punches his prostate. Remus feels his dick pressing against his own stomach, he didn't even realise he was fully hard. He doesn't realise anything at this moment, he just feels stuffed up to the brim.
His thoughts are sluggish and his moans broken. Sirius keeps up the assault on Remus' prostate and Remus quickly cums with a long drawn shout. Still panting when Sirius stops moving his hand, letting Remus come down from his high. He whimpers pathetically again when he feels Sirius pull out his hand out of his hole, the cold air settling inside his gaping hole.
He hears Sirius scoff behind him and casts a quick cleaning charm on the bed and settles beside Remus pulling him down too, just like the first time when he fucked him. "Only a whore like you could cum untouched like this, that too this fast." Sirius' voice piercing through the fog inside Remus' brain.
Remus bites back a reply because he's busy catching his breath, he can feel a large gap in his ass uncomfortable as hell, he vaguely wonders if it'll ever return to its original size. Sirius brings up a hand to caress Remus' cheek. Remus doesn't know whether he blacked out or slept, he doesn't know whether Sirius muttering an apology for using him like that in the library was real or a dream.