Threesome With Brother's Wife
Copyright© 2025 by Osa Oladapo
Chapter 3
Incest Sex Story: Chapter 3 - Osa goes to her brothers house for his birthday party, but things go different than expected.
Caution: This Incest Sex Story contains strong sexual content, including Ma/Fa Fa/Fa Reluctant Lesbian BiSexual Heterosexual Fiction Sharing Incest Brother Sister FemaleDom Light Bond Black Male Black Female Black Couple Cream Pie Pregnancy Small Breasts
The pulsating bass from the main house was a distant throb here, in the private glass-walled conservatory. Adunbi’s hand rested on the small of his wife Quivina’s back, her sleek black dress cool under his palm. They had come to see, to be seen, to perhaps play. He hadn’t expected to see her.
Osa stood alone by a potted orange tree, a silhouette against the city lights glittering beyond the glass. His sister. Two years younger, and a vision he had trained himself not to see. Tonight, that training shattered.
The conservatory’s ambient light sculpted her. She wore a simple, backless crimson dress that clung to a figure that was all generous, swaying curves. Her hips flared from a narrow waist, promising lush, heavy flesh beneath the fabric. The dress ended high on her thighs, showcasing legs that were long and powerfully shaped, tapering to delicate ankles. Her black hair, usually tied back, fell in loose waves over smooth, ebony-brown shoulders. When she turned, the neckline dipped, revealing the deep, valley between breasts that were firm and pert. Her ass, rounded and high, filled the red fabric perfectly, a ripe peach ready for tasting. Adunbi’s mouth went dry.
“Go talk to her,” Quivina whispered, her voice a low purr in his ear. Her nails traced his spine. “She’s alone. I’ve seen you look. I’ve been looking.”
A knot of heat twisted in Adunbi’s gut. Quivina pushed him forward, a gentle, insistent pressure.
Osa turned as he approached. Her eyes, the same dark mahogany as his own, widened, then softened with a warmth that had nothing to do with family. “Adunbi. You’re here.”
“So are you.” His voice was rough.
Her gaze flicked over his shoulder to where Quivina lingered, watching with a small, knowing smile. Osa’s full lips curved. “Your wife is beautiful. She’s watching us.”
“She knows what she wants,” Adunbi said, the words feeling dangerous and right.
Osa’s laugh was a soft, smoky thing. “And what is that?”
“To watch me fuck you,” he said, the vulgarity hanging in the air between them, stripping away pretense. “To watch me breed you.”
A visible tremor ran through Osa’s frame. Her breasts rose with a sharp intake of air. She didn’t look away. “There’s a room. Down the hall. Keycard on the table.”
It was that simple. A shared, silent understanding, charged with years of forbidden curiosity. Quivina fell into step beside him, her hand finding his, squeezing once in silent command.
The room was dim, lit by a single lamp that cast long shadows. The door clicked shut, sealing them in a bubble of quiet tension.
Osa faced them, her back against a heavy mahogany desk. Without ceremony, she reached behind her back, found a zipper, and let the crimson dress pool at her feet. Adunbi’s brain stuttered.
She was naked. Her body was a masterpiece of voluptuous womanhood. Her breasts were elegant puffs, dark areolas and taut, pointed nipples. A soft, flat belly led down to the stunning delta of her sex. She was completely bare, waxed smooth, her pussy a pronounced, lean mound. Her labia were prominent and beautiful—longer inner lips, a dusky pink-brown, peeking enticingly from between the outer folds, slick and glistening already. Her pussy was wet for him.
“Fuck,” Adunbi breathed, his own hands moving to his belt.
Quivina came up behind Osa, her hands sliding around to cup her heavy breasts, thumbs circling her nipples. “Look at her, Adu. Look at that perfect cunt. It’s begging for your cock. Our cock.”
Adunbi shoved his pants and boxers down. His cock sprang free, and Osa’s eyes dropped, her lips parting in a silent ‘O’.
It was a thick, heavy weapon. Long, easily over nine inches, and so thick his own fingers couldn’t meet around the shaft. The veins stood out in thick ropes under the skin, pulsing with his heartbeat. The head was a broad, smooth plum, flushed dark purple, a prominent ridge separating it from the shaft. Pre-cum already beaded at the slit, a clear promise.
“You’re going to stretch me,” Osa whispered, not with fear, but with raw, hungry awe.
“Yes,” was all he could manage.
Quivina guided Osa to bend over the desk, her lush ass rising into the air. The sight was devastating. Two full, round hemispheres, dimpled at the crease where thigh met cheek. Between them, her pink-brown pussy lips were swollen and parted, glistening with her arousal. Her asshole was a tight, darker brown pucker below, clenching in anticipation.
“Get behind her,” Quivina instructed, her voice husky. “Fuck her just like that. Let me see you take her.”
Adunbi moved, his hands landing on the warm, smooth skin of Osa’s ass. He kneaded the heavy flesh, spreading her cheeks apart. Her pussy was right there, dripping. Her inner lips were puffed and dark, a deep pink flower already blooming for him.
He guided the broad, blunt head of his cock between her slick folds. He didn’t push. He just teased. He rubbed the sensitive crown up and down her soaked slit, tracing the length of her entrance, gathering her wetness, painting her lips with it. Each pass made her whimper, made her hips jerk back.
“Please,” she gasped, pushing her ass back toward him. “Adunbi, please.”
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