Remus had felt it coming for days. The tightening in his chest. The dull, aching pull in his stomach. The way his skin prickled when you brushed past him in the hallway. It always started like this — low, manageable, a warning. But this time, it was worse. His rut was coming. And no Wolfsbane, no isolation charm, no cold bath could hold it back. He'd locked himself away in the spare room at Grimmauld Place, door bolted, charms layered thick. It was safer that way. You had no idea what it did to him — how the scent of you drove him half-mad, how his instincts clawed at the inside of his ribcage, demanding he claim you, mark you, fuck you so full of him you wouldn't be able to think of another man's touch. But you were off-limits. Too sweet. Too soft. Too good for the monster inside him. At least... that's what he told himself. Until the moment you knocked on his door. "Remus?" Your voice, soft and concerned, floated through the wards like silk against his skin. "You missed dinner. Are you okay?" His breath hitched. His cock, half-hard for hours, twitched to life with painful insistence. "Don't come in," he gritted out, voice strained and too rough. "Remus, it's me — please, I just want to make sure you're—"
"no." he struggled "I cant let you in- its not safe for you darling." his face was heated just knowing you were there. "baby I just want to know your okay-" you paused "is there anything I can do..?"
The thought of just seeing you made him feral . He couldn't take it. He reached for the door unbolting it with his wand. The door cracked open, and there you stood. And fuck, you smelled good. Like wildflowers and rain. He knew he shouldn't have opened the door but he couldn't control it anymore. Even through the steel bolted doors he could smell you. He only thought a little peek at you or just being able to be near you would help him. But obviously not. His last thread of control snapped. You walked in "Remus..?" In an instant, Remus crossed the room, slamming the door shut behind you, pressing you against it with a growl so low it made your knees weak. "Remus?" you whispered, wide-eyed. "What—?"
"I told you not to come in," he snarled, but his hands were already on you, rough, trembling fingers sliding up your sides. "Tried to stop it... but you, fuck, you smell so good, sweetheart." Your breath stuttered. "Remus, what's happening?"
"My rut," he gritted out, burying his face in your neck, inhaling deeply. "Been fighting it — days now — but it's too late. I can't... can't stop." Instead of fear, warmth bloomed in your chest. Because you knew Remus. You trusted him. And the idea of being claimed by the man you'd wanted for months made heat flood between your legs. "I don't want you to stop," you whispered. Remus froze. His gaze snapped to yours, golden-brown eyes feral, pupils blown wide. "You don't understand what you're saying."
"I do," you said softly, reaching to cup his jaw. "Let me take care of you." A low, broken groan tore from his throat. Then his mouth was on yours, desperate and claiming, teeth grazing your bottom lip. His hands tore at your clothes, impatient, desperate to get to your skin. "I need you," Remus gasped, pressing you hard against the door. "I need to be inside you, fill you up — fuck, can't think of anything else."
"Then do it~" you moaned, arching against him. He growled low, possessive, so primal it made your cunt throb. He kissed your neck leaving hickeys and bite marks unbuttoning his trousers in the process. His cock was so hard the rub of the fabric against it hurt. In one swift motion, he lifted you, your legs wrapping around his waist, his cock hot and thick pressing against your soaked knickers. "Im gonna fill you so good, love," Remus panted, biting down on the juncture of your neck, marking you. "So deep you'll feel me for days." Your head spun with arousal, your fingers tangling in his hair. "Please, Remus I need you." He carried you to the bed like you weighed nothing, laying you out beneath him, tearing the last of your clothes away. His gaze raked over you, feral and worshipful. "So perfect," he rasped. "You're mine now." When he stripped, your mouth went dry. His cock was heavy against his stomach, already leaking. He didn't wait. Pushing your legs apart, Remus lined himself up and sank into you with one deep, punishing thrust. You cried out at the stretch, the delicious burn of him filling you completely. "Fucking — tight little cunt," he groaned, head dropping to your shoulder. "Made for me. No one else'll ever have you."
"Only you, Remus~" you moaned, nails digging into his back. He thrust again, slow and deep, dragging the thick head of his cock along every sensitive spot inside you. his groans got gradually louder.
"oh god, I'm gonna knot it you~" he panted. "Ill fill you so full you'll be dripping for days~" he says groaning pounding harder. The filth in his voice made you clench around him, earning a snarled curse. "Fuck~" he growled hard under his breath feeling your insides clench around him. His rhythm quickened, brutal and claiming the bed creaking beneath you. His hand found your clit, rubbing in tight circles, sending pleasure shooting up your spine. "cum for me, fuck cum for me baby~" he growled. And you did arching your back with shivers going down your spine "i wanna feel you take in my cum," your back arched while Remus filled your insides up with hot gooey seed marking you filling up your stomach. Remus let out a guttural groan, hips slamming home as his knot swelled, locking him inside you. A hot, thick release filled you, the pulse of it sending aftershocks through your body. He held you tight, trembling, kissing your temple. "I tried so hard," he murmured against your skin. "But you... fuck, you're everything I ever wanted." You smiled sleepily, tracing his jaw. "Then don't fight it next time." And judging by the way his cock twitched inside you — there would definitely be a next time.

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Harry Potter smut stories
Fantasywill take suggestions and I'm still working on some characters pls let me know certain genders x kinks x characters you want me to do and I gladly will