004

Sia didn’t sleep, she couldn’t. She lay in bed staring at the ceiling, her body still humming from Derek’s mouth, her p***y aching for more. She’d tried to get herself off twice with her vibrator, but it was useless, she needed him. His hands, his mouth, the threat in his voice when he’d said he was coming for her. “Fuckk,” she moaned as the urge began building painfully. The house settled into silence around eleven. Her mother’s laughter downstairs, then the click of their bedroom door. Sia’s heart began pounding painfully. She was naked under the sheets, having stripped off her pajamas an hour ago, too hot and too restless for fabric. At 12:47, her door opened. Derek stood silhouetted against the hallway light, shirtless, wearing only sweatpants that hung low on his hips. He closed the door behind him and locked it. The click made Sia’s breath catch. “Were you waiting?” he asked, crossing to her bed in three strides. “Yes.” “Touching yourself?” he grinned. “No,” Sia sat up, the sheet falling to her waist, her breast bouncing up and down as she shifted“I tried. It wasn’t… you.” Derek pulled the sheet off her completely, his eyes raking over her naked body. “Good. This p***y belongs to me now. I don’t want you wasting orgasms on plastic when I’m here to give you the real thing.” He climbed onto the bed, crawling over her and forcing her back against the pillows. His weight settled between her thighs, the hard ridge of his c**k pressing against her through the thin fabric of his pants. Sia whimpered, arching up against him. “Eager,” he murmured, capturing her mouth in a kiss that was all possessive and dominant. He tasted like mint and something darker, masculine. His hands roamed her body, rough and possessive, squeezing her breasts, pinching her n*****s until she gasped into his mouth. “Please,” she breathed when he pulled back. “Derek, please… Mmm… fuck... daddy…” “Daddy?” Derek smirked and slapped her ass hard twice. “Awww… Unngh… P-please—” “Please what?” he ground his hips against her, and she felt how big he was, thick and heavy. “Tell me what you want, stepsister. Say it like a dirty slut.” “I want you inside me,” the words came out desperate and broken. “I want you to f**k me. Use me. Ruin my p***y. Please.” Derek groaned, his forehead dropping to hers. “You asked for this. f**k, Sia. You have no idea what you do to me,” he reached down and shoved his sweatpants off, kicking them aside. His c**k sprang free, heavy and veined, the tip already wet with precum. “Look at what you did to me. I’ve been hard since I tasted you. Now, you suffer the consequences for your actions.” Sia reached for him, wrapping her fingers around his length. He was hot and so thick her fingers didn’t touch each other. She stroked him slowly, and Derek hissed, his hips bucking into her grip. “Faster,” he groaned. Sia obliged. She move her fingers faster, using his precum as moisture and worked his c**k ready to ruin her. Derek growled and moved her hand away before positioning himself at her entrance, rubbing the head of his c**k through her thick folds, coating himself in her wetness. Sia’s head fell back, her nails digging into his shoulders. “Look at me,” he commanded. “Eyes on me, baby girl. Watch me ruin this perfect, untouched pussy.” The moment Sia fixed her eyes on his, he pushed in. The stretch was intense, burning and splitting her open in a way no toy ever had. Sia cried out, her body tensing, and Derek paused, sweat beading on his forehead. “Breathe,” he whispered, holding still and letting her adjust. “Breathe. I’ve got you.” She exhaled slowly, and the pain shifted, becoming something else — fullness, pressure, the overwhelming sensation of being claimed. She nodded, and Derek pulled back slightly, then thrust forward, burying himself to the hilt. “f**k,” he groaned. “So tight. So f*****g tight around my cock.” He started moving, slow at first, deep strokes that hit something inside her that made her toes curl. Sia wrapped her legs around his waist, pulling him deeper, needing more of everything. His hips kept snapping forward without a break. “F-faster,” she begged. “H-harder, Derek, please— Nnnnnnghh… aaaaaaahh… right t-there…“ He obliged, snapping his hips harder, the sound of skin slapping against skin filling the room. The bed creaked, headboard knocking against the wall, and Sia didn’t care, couldn’t care, lost in the sensation of being f****d for the first time by her stepbrother in the room next to their parents. Derek shifted his angle and hit a spot that made her see stars. “There?” he demanded, pounding into that spot relentlessly. “Right there?” “Yes, yes, f**k, daddy! Yes, haa… haa…” He reached between them and found her c**t, rubbing tight circles as he f****d her, driving her toward the edge. Sia was sobbing now, overwhelmed, her orgasm building fast and fierce. “c*m for me,” Derek ordered. “c*m on my c**k like the good little slut that you are. I want to feel you squeeze me.” “Ohh… fuckk… I… Mhfff…” His words pushed her over. Sia came screaming, her body convulsing, her p***y clamping down on him so hard Derek groaned, but he didn’t stop yet, he f****d her through it, hitting sweet spots Sia had no idea existed inside her. “f**k, f**k—”he pulled out suddenly, stroking himself hard and fast over her stomach. Thick ropes of c*m splashed across her skin, marking her, claiming her. Derek kept stroking until he was empty, then collapsed beside her careful not to crush her with his weight, both of them panting and spent. Sia stared at the ceiling, her body throbbing, her heart racing. Derek’s hand found hers, fingers intertwining. “Tomorrow night,” he said, his voice rough and still thick with lust. “And every night after. You’re mine now, Sia. Don’t forget that.” He carried her into the bathroom and dropped her in the tub, pressed a kiss to her forehead, and slipped out the door as silently as he’d come. Sia touched her stomach where he’d marked her, already counting the hours until tomorrow.