The house was silent except for the low hum of the refrigerator when Mark stepped into his sister's bedroom. At twenty-eight, he had spent years watching Elena, now twenty-five, move through the world with a careless grace that grated on him. She lay on her stomach in nothing but a thin tank top and panties, the curve of her ass rising with each slow breath. He had planned this for months, the power imbalance between them sharpening into something he could no longer ignore.
He locked the door behind him. The click made her stir. "Mark?" she mumbled, voice thick with sleep. He crossed the room in three strides and pressed a hand between her shoulder blades, pinning her flat. "Don't talk," he said, voice low and hard. His other hand yanked her panties down to her knees.
Elena twisted, but he was heavier, stronger, and the weight of his body crushed any real resistance.
"Stop," she gasped, but the word only fueled the dark current running through him. He freed his cock, already thick and insistent, and dragged the head along her slit. She was dry at first, her body fighting the intrusion, yet he forced the tip inside anyway, stretching her with deliberate, punishing pressure. Elena bucked, nails scraping the sheets. Mark leaned down, mouth at her ear. "You belong to me in this house. Fight all you want. It won't change a thing."
He drove deeper in one brutal thrust. Her cry was muffled against the pillow as he bottomed out, her walls clenching around the invasion. He held still for a moment, savoring the tight, unwilling heat, the way her body trembled beneath his control. Then he began to move, slow at first, each stroke a reminder of who held the power. His hand fisted in her hair, pulling her head back so he could watch her face twist between pain and unwilling sensation.
Elena clawed at the mattress, legs kicking uselessly. "Please," she whispered, the word breaking. Mark answered by slamming harder, the slap of skin loud in the dark room. He reached under her, fingers finding her clit and rubbing in rough circles, forcing her nerves to betray her. Her hips jerked, not in escape but in reflexive response, and he laughed low against her neck. "That's it. Your body knows who owns it."
He flipped her onto her back without pulling out, hooking her legs over his shoulders to open her wider. The new angle let him grind against her cervix with every thrust, deep and claiming. Tears streaked her cheeks, yet her nipples had tightened into hard peaks under the tank top. He shoved the fabric up and sucked one into his mouth, biting just enough to make her gasp. His hand wrapped around her throat, not choking but holding, a collar of flesh and intent.
Elena came against her will, her cunt fluttering and squeezing around him in helpless pulses. Mark didn't slow. He fucked her through it, using the slickness she couldn't stop to drive even deeper, chasing his own release with single-minded intensity. When he came, he stayed buried to the hilt, flooding her with hot pulses while his grip on her throat tightened just enough to make her vision swim.
He didn't pull out right away. Instead he stayed inside her, softening cock still stretching her, his weight keeping her pinned. "This isn't over," he murmured, voice steady and certain. "Every night you're under this roof, you remember this. You remember who decides." Elena lay trembling beneath him, breath ragged, the fight drained out of her for now. Mark kissed the corner of her mouth, almost tender, then began to harden again inside her, already planning the next demonstration of his control. The night stretched long ahead of them, and he intended to use every hour.
