MY STEPBROTHER ALPHA'S DIRTY OBSESSION

Serena's POV

"You married him without telling me?"

The words leave my mouth before I can stop them. My hands shake as I grip the car seat. Outside, iron gates close behind us with a crash that echoes through the night. My mother keeps her eyes forward. "Serena, please. Not now."

"When, then?" My voice cracks. I hate how weak it sounds. "After I unpack? After I pretend some stranger is my new father?" She flinches. Good. She should.

"Marcus isn't a stranger. I've known him for." "You've known him." I cut her off, something I never do. "I haven't. I've never even heard his name until three days ago." The car stops in front of a mansion so large it blocks out the moon. Stone walls. Tall windows glowing with cold light. A place built for power, not comfort, Something shifts inside me. A restlessness I can't explain. Like a warning I don't have words for yet.

I push it down and focus on my mother. "Dad's only been gone two years," I say quietly. The anger fades into something heavier. "Two years, Mom. And you're already replacing him." Her breath catches. When she finally looks at me, her eyes are wet.

"I'm not replacing him." Her voice breaks on the last word. "I could never replace him. But I can't keep living in that house. Seeing his chair empty every morning. Sleeping alone in our bed. Watching you pretend you're fine when you're falling apart." My throat tightens. I look away.

"So you ran," I whisper. "I survived." She grabs my hand before I can pull back. "And I need you to survive with me. Please, Serena. Just give this a chance." I want to say no. I want to tell her this feels like betrayal. That she's asking me to forget him, But the door opens beside me, and a servant bows his head, and suddenly we're walking toward a house that will never be home

The entrance hall steals the breath from my lungs, Not because it's beautiful. Because it's full of wolves. They stand in groups around the massive room. Talking. Laughing. Moving with the kind of easy confidence that comes from knowing exactly where you belong. The moment I step inside, every single one of them stops.

Heads turn. Eyes land on me. Measuring. Curious. Some hostile. I force my spine straight. I won't shrink. Not here. Not in front of strangers who already think I don't belong. A man approaches us. Older. Silver hair. Golden eyes that hold too much knowledge. He moves like someone who doesn't need to prove his power because everyone already feels it.

Marcus Blackwood. My mother's new husband. My new stepfather.

"Serena." He smiles warmly and takes my hand. "I've waited a long time to meet you." I force my lips to curve. "Thank you for having me." "You're family now." He squeezes my fingers gently. "This is your home." Family. Home. The words feel like lies dressed in pretty clothes.

My mother looks at him like he hung the stars. Something sharp twists in my stomach. Jealousy? Resentment? I can't name it, so I bury it. Then the room changes. The air gets heavier. The wolves around me shift their weight, lower their gazes, and step back like they're making room for something dangerous.

Everything inside me goes quiet. I feel him before I see him.

Every nerve in my body fires at once, screaming a warning I don't understand.

I lift my head. He stands at the top of the stairs, Tall. Broad. Dark hair falling across a hard face. Even from across the room, his presence crushes everything else. The wolves near me drop their eyes one by one. Some bow their heads slightly.

Alpha. The word rises in my mind like instinct. Like something ancient in my blood already knows exactly what he is. He starts walking down. Every step controlled. Predator-slow. But something burns beneath that control. Something barely leashed.

His eyes lift. They lock onto mine, gold, burning, So intense I forget to breathe.

The look isn't friendly. It's sharp. Suspicious. Almost angry. Like I've already done something wrong just by existing. Something inside me doesn't cower. Doesn't submit. It reaches.

Heat floods my chest. Sudden. Overwhelming. Every inch of my skin comes alive like lightning just struck. What the hell is happening? His expression shifts. Confusion flashes across his face. Then his jaw tightens. His eyes narrow. He felt it too. Whatever this is, he felt it too.

Marcus steps forward. "Serena, this is my son. Kael." Son. The word slams into me. Stepbrother. The Alpha of this pack is my stepbrother.

Kael stops a few feet away. Close enough that his scent wraps around me. Pine. Smoke. Something wild and dangerous. "She doesn't belong here." His voice is flat. Final. He's talking to Marcus, but his eyes stay fixed on me. "Blood or not."

The words land like a slap. "I'm not asking for anything." My voice comes out steadier than I feel. His eyes drop to my face fully. Something flickers there. Brief. Gone before I can name it. For a long moment, neither of us moves. The air between us crackles with something I can't name.

Then Kael turns away sharply. "East wing," he says. "Away from the main house." He walks away without looking back. I watch him disappear up the stairs. My fingers curl into my palms. My mother squeezes my arm. "Don't worry. He'll warm up." I nod, but I'm not listening, because something feels wrong. Not the mansion. Not the wolves. Something deeper. Something I can't shake. What did I just walk into?

The question sits in my chest like a stone as they show me to my room. Later that night, I stand alone by the window, staring at a forest I don't know. The door opens behind me. His scent fills the room before I hear his footsteps, pine, smoke, danger.

"You shouldn't be here," I say without turning around.

"You felt it." Not a question. A statement. My fingers curl tight against the windowsill. "I don't know what you're talking about." Footsteps, slow, deliberate, getting closer. "Turn around." Two words. No room for argument.

I don't move. A low sound rumbles from his chest. Not quite a growl. A warning. The footsteps stop. Heat presses against my back. He's right behind me now. "Your wolf reached for mine." His voice drops low. Rough. "Don't insult us both by pretending otherwise."

I turn slowly. He's inches away. Close enough that I see the amber burning in his golden eyes. The tension in his jaw. The way his chest rises and falls like he's fighting something he's already losing. His hand moves. Fingers close around my wrist. Not gentle, not rough, just there. Something inside me howls. Kael doesn't move. Doesn't speak.

His eyes drop to where his hand holds my wrist. Something crosses his face. Confusion first. Then something rawer. Something he clearly wasn't prepared for. He steps back slightly. Just one step. His jaw works but nothing comes out. I watch him struggle. Watch the mask he wore downstairs crack right down the middle. He looks at me like I'm something that shouldn't exist.

Like he's fighting a word he doesn't want to say.

The silence stretches. Thin. Unbearable. Then his grip tightens.

His eyes close for one brief second.

When they open again, something in them is broken. "Mate," he whispers. The word lands like a blade. Quiet. Devastating. I stop breathing. The room shrinks around us. Everything narrows to that single word hanging in the air between us.

Mate. His jaw clenches. He leans forward slowly. His lips stop just beside my ear.

His voice drops to something final. Like a door slamming shut on everything we could have been.

"And the worst part?" His grip tightens just enough to feel deliberate. "You're my stepsister."