In the Shadows

Harry Potter - J. K. Rowling
M/M
G
In the Shadows
Summary
As a werewolf, Remus was used to hunting; he was not used to being hunted, especially not by alphas like Sirius.

It had been weeks since Remus Lupin had started noticing Sirius Black following him. At first, it was subtle: a flash of black hair in the corner of his vision, a presence lingering just outside the library, or the soft echo of footsteps trailing him as he wandered the corridors during his rounds. At first, Remus had tried to dismiss it. After all, it was impossible. Sirius Black, the notorious prankster, was a snake among lions, confident and fearless. Surely, he wouldn't be interested in an omega like Remus, who spent most of his time in the shadows, trying to avoid the chaos of Gryffindor House, and who no one knew was an omega anyway.
But then it kept happening.
Sirius had been clever about it. He'd show up when Remus was walking alone, never too close, but consistently close enough to make the hairs on Remus' neck prickle. It was like he was hunting prey, waiting to catch him unawares. Remus couldn't figure out why.
The worst part was that, as an omega, Remus was incredibly sensitive to an alpha's presence. Sirius' scent, faint but unmistakable, would linger in the air. The rich, earthy smell of him, pine and nutmeg, would fill Remus' senses, making his heart race and his stomach flip in a way he didn't fully understand. His body would betray him, heating up in response, and the last thing Remus needed was to become the subject of gossip in Hogwarts' already-buzzing halls.
It didn't help that they were in different houses. Remus was a nondescript Hufflepuff, hiding in the corners of the library or a forgotten spot in their common room, hoping to escape the world's scrutiny. On the other hand, Sirius was a Gryffindor, loud and always at the centre of attention. Everyone knew who he was, and they all whispered about the growing tension between them.
"You're being paranoid, Remus," Dorcas Meadows had said one afternoon as they sat in the common room. "Sirius isn't stalking you. He's just, well, being Sirius. He's an idiot, but he's not that bad."
Remus didn't know if that helped. He was beginning to question everything. He had never had the best grasp of others' perception of him. Between his condition and the way his body betrayed him during the full moon, he'd always struggled with relationships, especially with alphas. But this? This was different.
One night, Remus found himself wandering the halls alone after a particularly long day. He was looking for a quiet place to think when, just as he turned a corner, he collided with someone. Of course, it was Sirius. His dark eyes shone with an intensity that made Remus freeze.
"Black," Remus mumbled, stepping back, but Sirius quickly closed the distance.
"You've been avoiding me," Sirius said, his voice low, like a growl that rumbled through the floorboards. "Why?"
Remus opened his mouth to protest, but no words came out. There was something different about Sirius now, something predatory, yet strangely tender. Remus' pulse quickened as Sirius stepped even closer, the alpha's scent enveloping him. The warmth of Sirius' presence was overwhelming, and Remus couldn't tell if he was terrified or drawn to him.
"I'm not avoiding you," Remus said, looking at the floor, his voice barely a whisper. "I'm... just trying to get through the day."
"By avoiding me?" Sirius raised an eyebrow, leaning forward until their faces were just inches apart. "What's going on with you, darling?" His hand came up to brush away the curls hiding Remus' eyes.
Remus could feel his body reacting before his mind caught up. His instincts were in overdrive, pulling him toward Sirius in a way he didn't understand. The alpha's dominance was a palpable force that seemed to press against him, leaving him breathless.
"I don't know you," Remus said, shaking his head free of the alpha's hand "Why are you following me?"
Sirius' gaze softened a flicker of something, interest? Flashing across his face. "I'm not following you," he said, his voice softer now, "I'm trying to get to know you"
Remus' heart skipped a beat. Was that what it had all been? Was Sirius trying to get close to him?
But Remus couldn't understand why. They were from different houses, and Remus was still an omega. He was far from the kind of person someone like Sirius would be interested in. Wasn't he? The words were out of his mouth before he could stop them: "We've been in the same school for seven years and you thought the best course of action was stalking me?"
Sirius reached out, his fingers brushing against Remus' arm, and Remus felt a surge of warmth that had nothing to do with the room's heat. "Look," Sirius murmured, "I know you think I'm an idiot. But you're not the only one who's been feeling this. I've always noticed you, but I can't stop thinking about you recently. And I want you to know I'm not going to hurt you."
Remus' breath hitched, and he looked up at Sirius with wide eyes. There was no teasing, no mocking in the alpha's expression. Only sincerity. Only something deeper.
"I know you're pretending to be a beta," Sirius said quietly. "And I'm an alpha. That... makes things complicated, I know. But I can't pretend that I don't want you. I just," he paused, "I'm trying to figure it out, too."
Remus stood there, frozen, caught between the pull of his instincts and the wariness in his mind. Could he trust Sirius? Or was this just some passing fancy, a dangerous game for someone as reckless as Sirius?
"I don't know what to do," Remus said, his voice shaky. "I thought I had convinced everyone of my designation."
Sirius stepped back, giving him space, but the heat between them remained, flickering like a flame in the dark. "You have. I only know because I pay so much attention to you but it's okay. We'll figure it out," he said softly, his voice almost a promise. "We don't have to do anything about us right now. Just don't push me away, okay?"
Remus could feel his walls starting to crumble. Sirius was wrong. There was never going to be a "them"; he'd make sure of it by distancing himself from the alpha. Maybe, just maybe, he could manage to avoid him until they graduated. And for the first time in a long time, he was determined to have things go his way.

Despite Sirius' attempts to get closer, Remus continued to avoid him. Every time he saw the familiar flash of black hair, the pressure of Sirius' presence, his heart would race. It had been weeks now, and the more Remus tried to escape, the more suffocating it became. He wasn't sure what Sirius wanted, but Remus wasn't ready to face it.
Things had only gotten worse when Benjy Fenwick started showing more interest in Remus.
Benjy, a fellow Hufflepuff, was kind, easygoing, and always respectful. He'd been offering Remus a bit more of his time recently, helping him with schoolwork, walking him to class, and staying by his side during the quiet moments in the library. It wasn't anything out of the ordinary, but it was enough to send a sharp pang of jealousy through Sirius.
Sirius had started noticing how Benjy would casually place a hand on Remus' arm or laugh with him in the halls. He would stand too close, smile too easily, and look at Remus like he was something precious, something worth protecting. Remus' unease grew with every shared glance and gentle touch between them.
It wasn't just the closeness that bothered Sirius, it was the idea that Benjy was close to Remus, had his attention in ways that Sirius couldn't. Remus had been avoiding him, but the more Sirius watched the easy, innocent way Benjy treated him, the more frustrated he became. And frustration, for Sirius, tended to bleed into anger.
Remus could feel the shift. It was subtle at first, the way Sirius would watch him with narrowed eyes whenever Benjy was around. His usually confident demeanour now seemed darker, possessive. Remus couldn't shake the feeling that something was about to break.
One evening, after Remus had spent some time in the library with Benjy, he had noticed Sirius watching him from a few tables over and he got up to make his way back to the common room, hoping to slip past Sirius unnoticed. He was almost there when a hand shot out from the shadows, grabbing his wrist with an iron grip and dragging him to an abandoned corridor.
Remus froze, panic rising in his throat. His heart was already racing before he even saw Sirius.
"Where do you think you're going?" Sirius' voice was low, dangerously so.
Remus flinched, trying to pull away. "Si-Sirius, please, le-let go," he stammered, his voice trembling.
But Sirius wasn't listening. His grip tightened, his eyes dark with something that wasn't just frustration anymore, it was something far more intense, far more primal. His expression had a sharp edge, like a predator who had been pushed to the edge. The way he looked at Remus made him feel trapped.
"I've been trying to be patient," Sirius growled, stepping closer, his breath hot against Remus' face. "I've been giving you space since our last little talk seemed to make you avoid me more. But I'm done waiting."
Remus' pulse thundered in his ears. He tried to step back, but his back hit the cold stone wall with a thud. His breath caught, his chest tight with panic. Sirius was right before him now, his body too close, pressing against Remus in a way that made the air feel thick with tension.
"Why are you avoiding me, Remus?" Sirius' voice was softer now, almost pleading, but it still held that dangerous edge. He was close enough that Remus could feel the heat of his body, the weight of his presence. His scent was overwhelming, and for a moment, it felt like the walls were closing in.
"I'm not avoiding you," Remus whispered, his voice trembling. But it sounded weak even to him. It wasn't true. He had been avoiding him for weeks, and the guilt gnawed at him, mixed with the fear that coiled deep in his stomach.
Sirius' gaze darkened. "Then why is it so easy for you to be with him? Benjy Fenwick," he spat, "Why are you spending all this time with him when you can't even look at me without running away?"
Remus could feel his breath hitch in his throat. He hadn't realized how much Sirius had been watching, how much he'd been paying attention.
"I… I don't know what you want from me," Remus said, trying to push against the wall to create some space, but Sirius' body was a solid force he couldn't escape. His heart pounded in his chest, and the heat of panic bloomed in his veins. "I don't-"
"You're mine, Remus," Sirius interrupted, his voice harsh now, almost a snarl. "You're not his. You don't get to act like you can walk away from this."
Remus' eyes widened in shock. The words stung, and his throat tightened with an odd mixture of fear and confusion. "Sirius you don't mean that."
But Sirius was relentless, pressing forward, his hands gripping either side of Remus' face, forcing him to meet his stare. His expression was wild, his eyes shining with an intensity that made Remus' stomach twist.
"You don't get to keep avoiding me," Sirius whispered harshly, his voice low and breathless. "I'm not some fool you can just walk away from, Remus. I want you. And I'll have you."
Remus shuddered, the weight of his words sinking in. His instincts screamed at him to run, but he was rooted to the spot, caught between the overwhelming dominance of Sirius' presence and the dangerous, undeniable pull his own body had towards him.
Sirius' scent filled the air, thick and suffocating, a reminder of how much he'd let this go on for far too long. Remus' breath came in shallow gasps, his chest tight with fear.
"I-" Remus swallowed hard, trying to find his voice. "I can't."
Sirius' expression softened for a split second, but the tension never left his posture. He leaned in even closer, his lips brushing against Remus' ear as he whispered, "Doesn't matter. You don't get to run anymore, Remus. Not when I'm this close. I won't let you."
The words landed with a weight Remus couldn't deny. He was trapped. And Sirius was right there and he wouldn't let him go. He felt the walls close in around him, his breath shallow as he tried to maintain some semblance of control. His heart hammered in his chest, the loud thudding making it difficult to hear anything else. Every nerve in his body screamed for escape, but Sirius' grip on his face was like iron. There was no space, no room to breathe, and with every inch Sirius moved closer, Remus felt smaller, trapped in the overpowering presence of the alpha.
"I don't want this," Remus managed to whisper, his voice breaking. His mind screamed at him to push Sirius away, to get free, but his body was betraying him, trembling in place. His thoughts were a mess of confusion, fear, and a faint pull he couldn't explain, even as his instincts screamed to run, to hide.
Sirius paused, his breath hot against Remus' cheek. For a moment, everything was silent except for the rapid pace of Remus' heartbeat. Remus' eyes darted around the empty corridor, desperate for someone to come around the corner. But the corridor was dark, deserted, just like it had been when Sirius had cornered him.
"You don't want this?" Sirius repeated, his voice softening but still carrying that dangerous edge. His thumb brushed over Remus' cheek, a motion that should have been gentle but felt like a brand. "You've been teasing me for weeks, and now you say you don't want this?"
"I wasn't," Remus tried again, but the words were stuck in his throat, suffocated by the weight of Sirius' presence. He wanted to scream at him, to demand that Sirius let go, but the more he resisted, the closer Sirius seemed to pull him.
"You think you can just hide away from me? From what's been happening between us?" Sirius' eyes narrowed, the warmth in his gaze flickering into something darker. "You think you can run to Benjy and pretend that I don't see it? You're mine, Remus, and I've been watching you with him. He won't get you like I do. He doesn't know what I know about you, wouldn't do what I would if it meant I could be near you…he doesn't know how to want you."
The mention of Benjy made Remus' chest tighten, a mixture of guilt and frustration washing over him. He wasn't trying to make Sirius jealous. He just didn't know how to deal with the mess of emotions swirling inside him, how to respond to the intensity of Sirius' presence, how to deal with the raw, primal pull that came with being near him.
"I'm not yours, Sirius," Remus breathed, his voice trembling, his eyes wide with a mixture of fear and defiance. "You can't make me feel something I don't."
Sirius' jaw clenched, and for a moment, Remus thought he saw something flash in his eyes, something sharp, something possessive. "You're mine, Remus," he said again, but this time, there was no hesitation in his voice. "You don't get to decide. I decide." He left no room for argument.
Remus opened his mouth to protest anyway, but before he could speak, Sirius stepped forward, closing the gap between them, pushing Remus further into the cold stone wall. The alpha's body was now flush against his, and Remus felt every inch of him, the heat, the power, the undeniable dominance. It was overwhelming, suffocating. His heart pounded in his ears, but his body felt like it was betraying him even more.
Sirius leaned down, his breath hot against Remus' neck. "Don't make me force you to see what you're doing to me, Remus. Don't make me show you how impossible it is for me to stay away from you."
Remus' breath hitched, the words hitting him like a punch. It wasn't just anger in Sirius' voice, it was desperation, raw and fierce. The closeness, the scent of pine and nutmeg that engulfed him, made Remus feel lightheaded, his body betraying him once again, heat spreading through him he couldn't ignore.
But his mind, his rational thoughts, screamed at him to stop this, to fight against it. "Please," Remus whispered, his voice cracking, his eyes flicking to Sirius' face. "I'm not ready for this. I don't understand what you want."
Sirius froze for a fraction of a second, a flicker of hesitation flashing in his dark eyes. Remus' words seemed to reach him but only for a moment.
"You don't have to understand, Remus," Sirius said, his voice tight with tension. "But I'll make you understand. You don't get to hide from me anymore." He leaned even closer, his lips almost brushing Remus' ear as he spoke, the words laced with a quiet, dangerous promise. "You're mine, and one way or another, you'll see it."
The weight of those words settled heavily on Remus' chest. A cold shiver ran down his spine as he realized the gravity of the situation. Sirius wasn't just toying with him. He wasn't just playing some twisted game. There was something real in Sirius' intensity, something raw and frightening, and Remus didn't know how much longer he could keep running from it.
But what terrified him the most wasn't just the growing storm of emotions between them, it was the nagging feeling that, deep down, he wanted to understand. He wanted to feel something for Sirius. He wanted this, even as every part of him screamed that it wasn't safe.
"I can't…" Remus whispered again, his voice barely audible. "Please, Sirius. Let me go."
For a long moment, there was no response. Sirius' grip on Remus' arms loosened just slightly, but he didn't move away. Instead, his gaze softened, the fierceness fading for just a moment, as though he was reconsidering something. Remus looked up at him, eyes wide with fear and uncertainty, his breath still shallow, his body stiff.
"You'll come to me, Remus," Sirius murmured, his voice low and almost gentle now, though it still carried the weight of something unyielding. "Whether you want to or not, you will."
Remus couldn't respond. His mind was a whirlwind, his thoughts tangled in the chaos of everything that had just happened, everything Sirius had just said. All he could do was stare back at Sirius, a silent plea in his eyes, hoping that this was just a moment, a passing storm. That somehow, he could escape.
But something deep inside him told him that this wasn't over. It was only just beginning.
Remus had hoped that after that night in the hallway, things might settle. That Sirius would back off, give him space, and let him breathe. But as the days passed, it became clear that Remus had underestimated the depth of the tension between them. Sirius hadn't backed down; if anything, he had grown more determined, more intense.
It wasn't just the way Sirius watched him in the hallways now, his eyes darker, heavier with meaning. It was the little things: the subtle brush of his fingers against Remus' arm when he passed, the way he'd appear unexpectedly in places Remus frequented, as if by some unseen force. Remus' body would always betray him, a sudden tightening in his chest, a flutter of panic in his stomach. The scent of pine and nutmeg would linger in the air, and Remus knew, without a doubt, that Sirius was close.
Still, he tried to avoid him, as best as he could. He hid in the library, spent more time in the greenhouses, and made excuses to get to the common room early. But every time he thought he was safe, it was like Sirius was right there, watching, waiting.
One evening, Remus had taken a detour to get to the Hufflepuff common room, trying to avoid the Gryffindor Tower. The corridors were mostly empty, the evening shadows stretching long on the stone floors. He was almost there when he felt it. The hairs on the back of his neck stood on end. That feeling, the one that told him he wasn't alone.
Remus froze. His breath caught in his throat as a figure emerged from the darkness ahead. Of course it was him.
Sirius.
He tried to turn back.
"Running again?" Sirius' voice was low, dripping with something that sent an icy shiver down Remus' spine. He was leaning casually against the wall, arms crossed, a piece of parchment limp in his hands, his eyes dark with something that looked like both amusement and hunger.
"I wasn't running," Remus said, his voice tight, though his mind screamed for him to turn and go the other way. "I just have things to do."
Sirius smirked, pushing himself off the wall and stepping forward with deliberate, slow movements. "Is that so?" His voice was still low, almost a growl now. "Because it seems to me like you've been doing a lot of avoiding. Hiding, even."
Remus swallowed, trying to steady his breathing, but the scent of Sirius' presence was overwhelming. That earthy, spicy scent. It filled his lungs, muddled his thoughts. His instincts were screaming at him, his omega side yearning to submit, to sink into the dominance that Sirius exuded without even trying. But Remus pushed it down, pushed everything down.
"I'm not avoiding you," Remus whispered, but even to his own ears, it sounded weak. "Please, Sirius. I don't want this. You need to leave me alone."
Sirius' eyes darkened further, the predatory glint in them sharpening as he stepped closer. Remus could feel his heart thundering, his pulse racing. The fear in him was growing again, that sense of being trapped, of having no way out. He wanted to move, to run, but the air between them felt thick, and every instinct in his body screamed that doing so would only make it worse.
"You don't get to tell me what I need, Remus," Sirius said, his voice nearly a growl now. He reached out and cupped Remus' cheek with a force that made the younger boy stiffen. "You don't get to run from me. Not anymore."
Remus opened his mouth to protest, but before he could say anything, Sirius leaned in closer, his breath hot against Remus' neck. Remus' body went rigid as his heart pounded in his chest. It was too much. It was all too much.
"I've been patient," Sirius murmured, his lips grazing the skin just below Remus' ear, his hot breath making the hairs on Remus' neck stand up. "But you're mine, Remus. And I'm done waiting."
Remus felt the blood drain from his face. His chest tightened, his heart racing as his instincts went into overdrive. A tingling sensation spread through his neck
, the familiar and terrifying sensation of Sirius so close to his mating gland. Remus had always been sensitive there, his omega nature hyper aware of any touch, any presence near the vulnerable spot.
Sirius' lips brushed over the delicate skin of his neck, just above the mating mark, and Remus could feel a low, almost animalistic growl rumble in Sirius' chest.
"You don't get to hide from me," Sirius continued, his voice thick with something that was both possessive and desperate. "Not when you smell so fucking good. Not when every part of me wants to claim you, to mark you, breed you, to make sure everyone knows you belong to me."
Remus' breath caught in his throat. The fear in him intensified as Sirius' lips ghosted just above his mating gland, his sharp canines so close that Remus could feel the electric charge of danger hanging in the air.
"Please," Remus gasped, trembling, his entire body locked in place, unable to move, unable to escape. "Don't… don't do this. Please…”
But Sirius wasn't listening. His breath hitched, and Remus could feel him inhale deeply, his lips brushing over the sensitive skin of Remus' neck once more. And then, just when Remus thought he might lose all control, Sirius paused. His lips hovered over the spot for a heartbeat that felt like an eternity.
There was a flicker of something in Sirius' eyes, a softness, an internal struggle that Remus almost didn't believe. And then, finally, with a shaky breath, Sirius pulled back, just barely, enough for Remus to gasp in a shuddering breath.
"You're mine," Sirius whispered, his voice rougher than before, but no longer so fierce. "I won't let anyone else near you, Remus. Not Benjy. Not anyone. You'll come to me. It's another matter of if you'll come willingly."
Remus stood there, wide-eyed, trembling, his heart racing as he realized how close he had come to crossing a line he didn't want to cross. His throat was tight, the air thick with the weight of what had almost happened. He could still feel the heat of Sirius' presence, that primal need in the alpha's gaze, the near kiss of fangs against his skin.
Sirius' hand remained on his cheek, though he had pulled back, his thumb rubbing over the delicate skin there. "You don't have to be afraid of me," Sirius murmured, though his words sounded more like a threat than a reassurance. "Not unless you keep pushing me away."
Remus didn't know how to respond. His mind was still reeling, his heart still hammering in his chest. All he knew was that things had changed. And he wasn't sure if he would ever be able to get away from it.
The Christmas holiday was supposed to be a time of peace. After the tension of the past few months, Remus had been looking forward to the quiet comfort of his home in the countryside. Away from the crowded halls of Hogwarts, away from Sirius, away from everything that had been weighing on him. He needed the space to think, to breathe, to figure out how to handle the chaos that had started to consume his life.
His house, tucked away in the rolling hills of the Welsh Highlands, was the one place where he could truly relax. His mother had gone to visit relatives and had dragged his tad along with her, leaving him alone for the first time in weeks. Remus had spent his days reading by the fire, tending to the small garden outside, and trying his best to avoid thinking about the looming pressure of Sirius and his confusing feelings.
But as he settled into his favourite armchair on Christmas Eve, sipping his tea and listening to the soft crackle of the fireplace, the sharp sound of apparition echoed through the house. It was a sound that shouldn't have been there. His parents weren't due back for days, and no other wizard or witch knew where he lived, but the scent of smoke and nutmeg started to fill his nose.
His heart stopped.
Remus stood up slowly, the unease creeping into his bones. He crossed the room, the floorboards creaking beneath his feet, and peered through a crack in the door. His breath caught in his throat. There, standing by the kitchen sink with the light of the moon illuminating the room, was a figure he would recognize anywhere.
Sirius Black.
Remus' stomach flipped. He couldn't process it at first, Sirius wasn't supposed to be here. He wasn't supposed to know where Remus lived. It didn't make sense. There was no logical reason why Sirius would be standing in the middle of the night at his front door.
And yet, there he was.
Remus' pulse quickened, panic rising in his chest. He had thought he'd escaped. He had thought that, for once, he could have some peace, away from the constant pull of Sirius' presence. But here he was, as if he had followed Remus all the way from Hogwarts, invading his sanctuary.
With trembling hands, Remus opened the door. He didn't know what to expect, but nothing could have prepared him for the sight of Sirius standing on his doorstep, his dark eyes intense, his hair wild from the cold wind, his cloak billowing behind him like some kind of ghost.
"You're here," Remus said, his voice a whisper. It wasn't a question. It was an accusation, a breathless realization that his worst fear had come true. "How did you?"
"I followed you," Sirius interrupted, his voice rough. "I couldn't stay away. I've been trying to give you space, Remus, but I can't stay away from you. Not anymore."
Remus stared at him, frozen in place. Sirius looked different than usual, more desperate, more dishevelled, and yet there was something strangely magnetic about him. He looked like he had walked through miles of snow just to get here, like he had crossed an invisible line between the world he knew and the one Remus had tried to protect himself from.
"You shouldn't be here," Remus said, his voice shaking. "You can't just show up at my house. This is my home."
"I know," Sirius said, his voice low, almost pleading. "I didn't know where else to go, Remus. I can't let you push me away anymore. I've tried. I've tried so hard to stay away, but I can't do it. I can't let you go."
Remus felt a lump form in his throat. He wanted to yell at him, tell him to leave, tell him that this wasn't how things were supposed to happen. But the truth was, the longer Sirius stood there, the harder it became to push him out of the doorway. The pull, the weight of everything between them, felt heavier than ever. It wasn't just his own emotions anymore, it was the pressure of everything Sirius had stirred inside him, the growing tension that seemed to follow him wherever he went.
"You're frightening me," Remus whispered, but his voice cracked. The words didn't sound like he meant them. The truth was, part of him was afraid, afraid of what might happen if Sirius stayed. Afraid of how badly he might want him to stay.
Sirius' gaze softened, but it wasn't just softness. It was yearning, something raw and untamed that Remus didn't know how to handle. Sirius stepped forward slowly, cautiously, until they were inches apart. Remus instinctively took a step back, but the pressure of Sirius' presence seemed to push him forward again, until he was trapped in the narrow space between the door and the wall.
"I don't care if it's a mistake," Sirius said, his voice firm now, but laced with something vulnerable. "I can't stop wanting you, Remus. I can't pretend anymore."
Remus opened his mouth to argue, but the words didn't come. The reality of the situation hit him like a wave, and for the first time since Sirius had appeared, Remus felt that desperate pull that ached deep in his chest. His omega side, still so confused by everything that had been happening, fluttered, a delicate whisper that told him to stay.
But his mind was still reeling, still fighting against what he knew was coming. He couldn't let this happen. He couldn't let himself get lost in the heat of Sirius' gaze.
"I don't know what to do," Remus whispered, his voice trembling with the weight of the choice he hadn't made yet. He wanted to push him away. He wanted to tell him to leave and never come back. But in the quiet of his house, with the moonlight streaming in, and with the intense presence of Sirius looming over him, Remus didn't know if he could.
Sirius' eyes softened, a flash of understanding crossing his face. "I know. I know you're scared. But we don't have to figure it all out right now. I just need you to stop running from me."
Remus didn't know how to answer that. Instead, he stood there, caught in the storm of emotions between them, caught in the realization that he was no longer the one in control. He could feel his own body betraying him, the yearning bubbling beneath the surface.
Sirius reached out, gently brushing a strand of hair from Remus' face, his touch almost tender. "Let me in, Remus," he said softly, his voice like a whisper in the cold night air. "Let me stay."
Remus swallowed hard, his mind spinning in a thousand directions. He couldn't think anymore. All he knew was that Sirius was here, and no matter how hard he tried, he couldn't push him away.
And for the first time, he wondered if he ever wanted to.
The room felt suffocating, the air thick with unspoken words and emotions that neither knew how to handle. Remus could feel the pull of Sirius' presence like a magnetic force, his heart hammering in his chest as Sirius' gaze softened, his fingers still lingering on Remus' face.
Remus had been trying to hold onto control and keep himself steady, but the weight of the situation was slowly eroding. Sirius had invaded his space in the most intimate way possible, showing up at his door when Remus thought he was safe. The lines between fear and attraction blurred with every second, the instinctive pull between them growing more potent.
Sirius didn't say anything for a long moment, his hand still resting just below Remus' jaw, his thumb grazing the sensitive skin of his neck. Remus could feel the instinctual flutter of his omega side, the ache for connection, and the need to submit to Sirius's dominance. It was terrifying, but in an inescapable way, like a force of nature.

"I know you're scared," Sirius said quietly, his voice soft but laced with intensity. "But you don't have to be. I'm not going to hurt you. I just need you to stop running. Let me in."
Remus shook his head, the words caught in his throat. He didn't know how to explain it, how could he? Everything inside him was telling him to stay away, to protect himself. He couldn't allow himself to fall deeper into this, not when his feelings were so confused, not when everything about Sirius' presence felt like a storm that could sweep him away at any moment.
Sirius stepped closer, so close now that Remus could feel the warmth radiating from his body and the slight tremble in the alpha's breath as it brushed against his skin. "I've wanted this for so long," Sirius whispered, the desperation in his voice undeniable. "I can't keep pretending that I don't."

Without thinking, he reached out, his hands framing Remus' face as he gently pulled him closer. Remus gasped, instinctively pulling back, but Sirius' grip tightened slightly, painful but not vicious. His mouth hovered just a breath away from Remus' neck, the warmth of his presence overwhelming.
The soft, almost imperceptible growl rumbled in Sirius' chest, and Remus felt it ripple through him like a wave. It wasn't a threat, it was a promise, a warning. He was marking his territory in the most intimate way possible, making it clear that Remus was his.
"Sirius, please," Remus whispered, his voice trembling, his body frozen in place as his omega side rebelled against the fear that gripped him. "I don't want this. I don't want you."
"But I want you, and you can learn to want me back with time" Sirius responded immediately, his voice a low growl. "I've always wanted you. But you keep pushing me away, and I don't know how much longer I can take it."
Sirius' lips brushed against Remus' neck, close to the sensitive mating gland, and Remus' body responded before his mind could process it. The heat was unbearable, his body betraying him in ways he couldn't control. He could feel his pulse quicken, the instinct to submit rising.
"No," Remus whispered, his voice shaky, his hands gripping Sirius' shirt as if trying to push him away, but not with the force he wanted to use. "I can't-"
"I can't be what you want," Remus said, his voice small. He wasn't sure if he was trying to convince himself or Sirius. He had always been the quiet one who kept his distance from the chaos of others, and the idea of being pulled into something so intense and consuming terrified him. "I'm not like other omegas. I'm different. I can't handle it."
Sirius stepped closer slowly, but his presence felt overpowering. "You don't have to be like anyone else. You're not like anyone else, Remus," Sirius whispered, almost pleading. "I just want you to see that I'm here. I'm not leaving. I've never wanted anything more than I want you."
Before he could say another word, Sirius pressed his lips to the tender skin of his neck, and Remus' breath hitched. It wasn't just a kiss. It was a claim. A marking. The sharpness of Sirius' canines grazed against his skin, and Remus' heart skipped a beat as his entire body tensed, both in fear and, inexplicably, in anticipation.
And then, in one swift, almost brutal motion, Sirius' fangs sank into his mating gland. Remus froze, unable to breathe, the shock of the action hitting him like a wave. It wasn't just the bite, the overwhelming heat, the intense dominance that seemed to pour from Sirius, flooding Remus' senses and drowning out everything else.
Sirius didn't pull back immediately. He held Remus there, the bond between them flaring to life as Remus' instincts screamed at him to submit, to let go. But Remus' mind was screaming something else entirely. He wanted to push Sirius away, to escape the overwhelming flood of sensations threatening to overwhelm him.
"Sirius," Remus gasped, his voice shaky, his hands fisting in Sirius' clothes as he fought against the sudden wave of heat flooding his body. "Please… stop. I don't…"
But Sirius didn't pull away. He kept his fangs embedded in Remus' neck, the heat and power of the bond growing stronger with every passing second. He could feel it, the mark, the claim. It wasn't just physical; it was emotional, too. Something had shifted between them, something irreversible.
When Sirius finally pulled back, Remus was breathless, his body trembling as if it had been through a storm. His skin felt hot, his pulse racing, his neck sore where the bite had been. The room was silent, save for their breathing, both of them trying to process what had just happened.
Sirius stepped back, his gaze flickering with a mixture of regret and something else, something that Remus couldn't name. His breath was ragged, his chest heaving as he looked at Remus, waiting for a response.
Remus could still feel the pulse of the bond in his veins, the overwhelming sensation of being claimed. He reached up, his fingers trembling as he touched the tender spot on his neck where Sirius had bitten him. It was more than just physical pain; it was the weight of everything between them, the irreversible shift in their relationship.
"Sirius" Remus whispered, his voice unsteady. He didn't know what to say. Didn't know if he could forgive what had just happened. But a part of him knew that, no matter what, things had changed forever.
Sirius stood there, his expression conflicted. He didn't apologize, not with words, but the look in his eyes was one of vulnerability, of regret. "I didn't mean to hurt you," he said, his voice low, almost pleading. "I just couldn't stop myself."
Remus swallowed hard, trying to steady his breath to calm the chaos in his chest. He didn't know what to say. Didn't know how to process everything. But deep down, he knew that something had broken. And whether he was ready for it or not, there was no going back now.