Step Daddy's Pet
Copyright© 2026 by Thomas Spencer
Chapter 1
Incest Sex Story: Chapter 1 - Kayla, an 18-year-old blonde college student with a highly active sex life, becomes fixated on her mother’s new boyfriend, Ryan—a tall, dominant man with an impressive physique and endowment. After spying on their intense, kinky encounters, Kayla’s desire leads her to cross the line. Ryan quickly collars and trains her as his submissive “pet,” just as he has her mother. The household shifts into a consensual pet-play dynamic, with both women leashed, plugged, and eagerly serving him. What began
Caution: This Incest Sex Story contains strong sexual content, including Ma/Fa Ma/ft Fa/ft Ma Fa ft Mult Teenagers Coercion Consensual Drunk/Drugged Reluctant Romantic Slavery Lesbian BiSexual Heterosexual Fiction Cheating Sharing Slut Wife Incest Mother Father Daughter BDSM DomSub MaleDom Humiliation Light Bond Rough Spanking Group Sex Harem Orgy Polygamy/Polyamory Interracial Black Male White Male White Female Anal Sex Cream Pie Double Penetration Facial Masturbation Oral Sex Sex Toys Squirting Voyeurism AI Generated
The Lamborghini’s leather seats creaked under them as Kayla arched her back, her blonde hair spilling over the headrest like golden silk. The college athlete—Jake, some star quarterback with a trust fund and a body carved from endless gym hours—had her bent over in the backseat, his 6’4” frame dominating the cramped space. He was ripped, every muscle flexing as he gripped her hips, slamming into her ass with rough, relentless thrusts. Kayla’s round buttocks jiggled with each impact, her decent thighs trembling as she pushed back against him, loving the burn, the stretch.
“Fuck, yeah ... harder,” she gasped, her voice breathy and raw. Her D-cup breasts swayed heavily beneath her, nipples hard against the cool leather. Jake grunted, one hand tangling in her hair, yanking her head back just enough to make her moan louder. “Ahh ... oh god, yes...” The car rocked slightly on its suspension, parked in some dark alley behind the campus party they’d ditched hours ago.
He pounded deeper, his cock thick and unyielding in her tight ass, the lube from earlier making everything slick and filthy. Kayla’s fingers dug into the seat, her body coiling tighter. She could feel it building—that intense pressure deep inside. “Don’t stop ... uhm, fuck, I’m gonna...” Her words dissolved into a sharp cry as she squirted, her pussy clenching and gushing over his balls, soaking the seat beneath them. Jake growled in approval, his pace turning brutal, hips slapping against her cheeks.
“Take it, you little slut,” he muttered, voice low and cocky. Kayla just whimpered, riding the waves, her body shaking. Moments later, he buried himself deep and came hard, flooding her ass with hot spurts. She felt every pulse, the warmth spreading inside her as he held her there, grinding slowly until he was spent.
He pulled out with a wet pop, smirking as he zipped up. Cum leaked from her stretched hole, trickling down her thighs. Kayla slumped against the seat, breathless, a satisfied grin on her lips. “Damn, that was good,” she murmured, but Jake was already starting the engine, dropping her off at her house like it was nothing—just another conquest for him.
She slipped out of the Lambo in a messy state, her short skirt hiked up, thighs sticky with her own juices and his load seeping out. The cool night air hit her flushed skin as she quietly unlocked the front door, tiptoeing upstairs to avoid waking anyone. Her mom worked late shifts sometimes, but better safe. In her room, Kayla stripped off her clothes, glancing at herself in the mirror—blonde waves tousled, blue eyes bright with post-fuck glow, her curvy body marked with faint red handprints on her ass.
She headed to the bathroom, turning the shower on hot. The water cascaded over her, washing away the sweat and cum. She lathered up, fingers sliding between her cheeks to clean thoroughly, rinsing the sticky trails from her thighs. It felt good, almost soothing after the roughness, but her mind was already drifting to the next thrill. At 18, she’d fucked more guys than most girls her age even kissed—college boys, older men, anyone who caught her eye. Sex was her escape, her power. She toweled off, slipped into a loose tank top and shorts, and crashed onto her bed for a bit, scrolling her phone until she dozed lightly.
A couple hours later, her mom’s voice called up the stairs. “Kayla? Honey, come down for a minute!”
Groaning softly, Kayla rolled out of bed, running a brush through her hair. She padded downstairs in her casual outfit—no bra, the tank clinging to her full breasts—and froze at the bottom step.
Her mom, Lisa, stood in the kitchen with a man. No—a god. He was 6’5”, built like he owned the world, broad shoulders straining against a fitted shirt, arms thick with muscle. His jaw was sharp, dark hair tousled just right, and those eyes ... piercing green, holding a quiet intensity that made her stomach flip. Even flaccid, the outline in his jeans was impossible to miss—a heavy, thick bulge that promised something massive.
“This is Ryan,” her mom said brightly, beaming up at him with that new-relationship glow. “My boyfriend. Ryan, this is my daughter, Kayla.”
Kayla’s heart slammed against her ribs. She’d just been fucked senseless, ass still a little sore, but the sight of him hit her like a fresh wave of heat. There was something about him—an aura, raw and magnetic, that made every other guy she’d been with feel like boys. He exuded control, quiet dominance, and fuck, he was gorgeous. Her pussy clenched involuntarily, a subtle throb starting up again.
“Nice to meet you, Kayla,” Ryan said, his voice deep and smooth, extending a large hand. His grip was firm, warm, lingering just a second too long as their eyes locked.
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