Chapter Text
Remus flung Sirius onto the bed, yanking at the button on his trousers and ripping the zip down. Sirius loved it when Remus took over like this; it made pleasure ripple through his body as he gave himself over to Remus’s power.
The full moon was on its way, and that always filled Remus with so much raw energy. At this time of the month, he wasn’t careful with Sirius, not that Sirius was complaining. He loved the way it made him feel when Remus took him roughly, how he would feel it for days, a reminder that he was Remus’s.
Remus ripped his shirt off, buttons flying everywhere, before he leaned over Sirius’s body and devoured his mouth.
Cold slick hit his hole a second before Remus roughly shoved a finger inside him, making his hole burn as he began to stretch him. Remus pushed a second and then a third finger in slightly sooner than he usually would, and the burn returned, barely easing before he added the next finger.
When Remus felt that Sirius was loose enough, he flipped him over, pulling his hips up off the bed and pushing his hand between Sirius’s shoulders to press him into the mattress.
Remus gave no warning before sheafing himself inside Sirius. He pushed in in one long movement. Sirius puffed and panted through it, concentrating on relaxing his body so that when Remus began pounding into him, he would be ready for him.
Remus paused for barely a second and then took off at a punishing pace. His balls slapped against Sirius’s arse as the sound of sink smacking into skin rang around the room.
Remus leaned over him, pushing him further into the mattress as he plunged in and out of Sirius's hole with his thick cock. Sirius’s own cock was leaking a river of pre-cum onto the sheets. Remus shifted his position, and with each stroke, he now banged up against Sirius’s prostate.
Sirius yelled out, but Remus shoved his fist into Sirius’s mouth and continued with his onslaught. Sirius felt the minute stutter in Remus’s thrusts and knew that Remus was about to explode inside him.
He wiggled his hand until he could grasp his leaking cock and fisted it hard. Remus hit his prostate again and again, and Sirius came. The entire school would have heard his screams of pleasure if Remus hadn’t plugged his mouth with his fist.
Remus thrust into him even harder, Sirius’s legs collapsing from under him, and then Remus stilled. Sirius could feel his cock twitching inside him and the warm pool of cum filling him.
Remus stayed there for a while, slowly moving in and out until it became too much for him and he let his softening cock fall out of Sirius’s hole. Remus flopped onto the bed next to him and rolled Sirius so he could spoon him. Sirius snuggled back, loving how caring Remus was with him after a session like that. He squirmed when Remus inserted a finger inside him and lazily fucked his cum out of Sirius’s hole. Remus kissed his hair and neck as Sirius’s eyelids fluttered closed, completely spent.
Sirius fell asleep with Remus still lazily fucking him. He’d probably want to go for another round before the dawn, but he’d let Sirius sleep first because no matter how much Moony affects him this close to the moon, he always made sure to take care of Sirius.