The coastal highway unwound before them like a ribbon of gray silk, hugging the rugged Pacific coastline as the family SUV carried the Harringtons toward their ancestral summer estate. For twenty-three-year-old Marcus Harrington, this annual pilgrimage to the remote Oregon coastline had always been a sanctuary—a place where the chaos of his college life dissolved into the rhythmic crashing of waves against ancient cliffs. But this summer would be different. This summer, everything would change.

Marcus shifted uncomfortably in the passenger seat, his athletic frame cramped against the door as he tried to conceal the persistent arousal that had plagued him since they'd left Portland three hours ago. His stepmother, Vivian, was driving, her slender fingers wrapped around the leather steering wheel with casual elegance, her dark sunglasses hiding eyes that Marcus knew were the color of storm clouds—gray, mysterious, endlessly deep.

"You're quiet, sweetheart," Vivian said, her voice carrying that melodic quality that had made her a celebrated jazz singer in her twenties, before she'd married Marcus's father and settled into domesticity. "Nervous about starting your master's program in the fall?"

"Something like that," Marcus mumbled, though his gaze was fixed on the way her sundress rode up her toned thighs with each press of the gas pedal. At forty-two, Vivian Harrington defied every convention of middle age. Her raven-black hair cascaded in loose waves past her shoulders, framing a face that could have graced magazine covers—high cheekbones, full lips perpetually curved in a knowing smile, and that body. God, that body. Marcus had spent countless nights in his dorm room, fist wrapped around his thick, eight-inch cock, imagining those full, natural breasts—heavy D-cups that swayed hypnotically when she moved—spilling from her silk blouses.

"Marcus, honey, you're staring," Vivian teased, glancing at him with a smirk that suggested she knew exactly where his mind had wandered. "Eyes on the road, young man."

"Sorry, Mom," he said automatically, though they both knew she wasn't his biological mother. Vivian had married his father when Marcus was fifteen, and after the old man's sudden heart attack three years ago, she'd remained a constant in Marcus's life—a beacon of stability and, increasingly, the object of his most depraved fantasies.

From the back seat, a melodic laugh interrupted his thoughts. "You two are hilarious," his stepsister, Chloe, chirped, leaning forward between the front seats. "Marcus looks like he's about to explode, and Mom's pretending she doesn't love the attention."

"Chloe!" Vivian gasped, though her laughter betrayed her lack of genuine offense.

At nineteen, Chloe Harrington was the spitting image of her mother, though where Vivian carried the ripened curves of mature womanhood, Chloe possessed the tight, athletic body of a college volleyball player—long, toned legs that seemed to go on forever, a flat stomach that showcased the results of countless hours of core training, and breasts that were smaller than her mother's but sat high and firm on her chest, perpetually straining against the thin fabric of her crop tops.

She was also, Marcus had recently discovered, completely sexually inexperienced.

The knowledge had come to him accidentally three weeks ago, when he'd overheard Chloe confiding in her best friend during a video call. "I'm the only virgin left in my sorority," she'd whispered, her voice carrying that mixture of embarrassment and longing that had instantly hardened Marcus's cock. "I want to wait for someone special, you know? Someone who knows what he's doing. Not some fumbling frat boy."

Marcus had filed that information away, telling himself it was brotherly concern that made his pulse race. Now, watching her reflection in the side mirror—those pouty lips wrapped around a straw as she sipped her iced coffee, her honey-blonde hair catching the afternoon light—he knew it was something far more primal. Something forbidden.

The Harrington estate occupied ten secluded acres on a private cove, accessible only by a winding dirt road that climbed through dense coastal forest before suddenly opening to reveal the sprawling Victorian mansion. Built by Marcus's great-grandfather in 1923, the house had been meticulously maintained, its wraparound porches and turret rooms offering panoramic views of the churning Pacific.

"This place never gets old," Chloe breathed as they pulled into the circular drive, her eyes wide with wonder. "I swear, it's like stepping back in time."

"Your grandfather used to say this house had magic in its walls," Vivian said, her voice soft with memory as she killed the engine. "That it brought out people's true natures."

Marcus caught her gaze in the rearview mirror, and for a heartbeat, something electric passed between them—a current of understanding that made his stomach clench with anticipation. Then she looked away, and the moment passed.

They spent the afternoon unloading their luggage and opening up the house for the summer—pulling dust sheets from furniture, airing out musty bedrooms, restocking the kitchen with supplies from the nearby town of Crescent Harbor. By evening, the house had transformed from a dormant museum into a lived-in home, the scent of garlic and herbs wafting from the kitchen where Vivian prepared their first dinner.

"Marcus, be a dear and fetch some wine from the cellar," she called out, her voice echoing through the high-ceilinged rooms. "The Pinot Noir, I think. The 2018."

The cellar occupied a cool, stone-walled chamber beneath the main house, accessible by a narrow staircase that descended into darkness. Marcus flipped on the light switch and made his way down, his eyes adjusting to the dim illumination as he navigated between racks of vintage bottles.

He'd just located the requested wine when he heard footsteps on the stairs. He turned to find Vivian descending toward him, her sundress replaced by a silk robe that clung to her curves in ways that made his mouth go dry.

"I thought you might need help carrying," she said, though her tone suggested otherwise. She reached the bottom step and paused, her eyes meeting his in the confined space. "Or perhaps I just wanted a moment alone with you."

"Mom?" Marcus's voice came out rough, uncertain.

"Don't," she whispered, closing the distance between them until he could smell her perfume—something exotic and musky that made his head spin. "Don't call me that. Not tonight. Tonight, I want to be Vivian. Just Vivian."

She reached out and placed her palm against his chest, her fingers splaying over his rapid heartbeat. "I've watched you, Marcus. All these years, watching you grow from a boy into this... this magnificent man. Do you know how difficult it's been? Pretending I don't notice the way you look at me? Pretending I don't imagine your hands on my body when I touch myself at night?"

"Jesus," Marcus groaned, his cock instantly rock-hard against his jeans. "Vivian... we can't."

"Can't we?" She pressed closer, her breasts flattening against his chest, her hips grinding subtly against his throbbing erection. "Your father has been gone three years. I've been alone. So alone, Marcus. And you... you're not a child anymore. You're a man. A man I've wanted in my bed for so long."

She reached down and cupped his bulge through the denim, her fingers tracing the thick outline of his shaft with practiced precision. "God, you're even bigger than I imagined," she breathed, her eyes glazing with lust. "I used to listen at your door, you know. When you thought you were alone. I'd hear you stroking yourself, hear you groaning, and I'd touch my pussy right there in the hallway, imagining it was my cunt you were filling with that big, hard cock."

Marcus's restraint shattered. He grabbed her by the waist and spun her around, pressing her against the cool stone wall as his mouth crashed down on hers. She moaned into the kiss, her lips parting instantly to accept his probing tongue, her hands clawing at his back as she ground herself against his straining length.

"Yes," she whimpered when he finally broke the kiss to trail his mouth down her neck. "Yes, baby, take me. I've needed this so badly."

He tore at her robe, buttons popping free as he exposed her naked body beneath—those magnificent breasts with their dark, pebbled nipples, the soft curve of her belly, the trimmed dark triangle of hair that covered her mound. She wore nothing underneath, and the sight of her glistening slit, already swollen with arousal, made Marcus's mouth water with hunger.

"Fuck, you're beautiful," he growled, dropping to his knees before her.

"Marcus, wait—" she started, but her protest dissolved into a keening cry as he lifted one of her legs over his shoulder and buried his face in her pussy. The taste of her was intoxicating—salty and sweet, musky and divine. He attacked her folds with desperate hunger, his tongue lapping at her engorged clit before plunging deep into her tunnel, gathering her nectar as she writhed against his face.

"Oh god, oh god, oh god," Vivian chanted, her fingers tangled in his hair as she ground herself against his mouth. "Right there, baby, right there. Lick mommy's clit. Make me cum on your face."

The filthy words spurred him on. He replaced his tongue with two fingers, curling them upward to stroke her G-spot while his mouth focused on her throbbing nub, sucking and flicking with relentless pressure. Within minutes, she was trembling, her thighs clamping around his head as her orgasm crashed through her.

"Marcus! Oh fuck, Marcus, I'm cumming! Don't stop, don't you dare stop!" she screamed, her juices flooding his chin as her body convulsed. He rode her through it, continuing his assault until she was pushing him away, oversensitive and gasping.

"Inside me," she begged, pulling at his shoulders. "I need you inside me. I need to feel my son's cock stretching my pussy."

He stood, fumbling with his belt, but before he could free himself, they both froze at the sound of footsteps on the stairs above.

"Mom? Marcus? Where are you guys?" Chloe's voice drifted down, innocent and curious.

Vivian's eyes met Marcus's, wild with panic and lingering arousal. "Coming, sweetheart!" she called out, her voice remarkably steady. "We were just... selecting a bottle."

They heard Chloe's footsteps retreat, and Vivian sagged against the wall, her chest heaving. "Tonight," she whispered, pressing a quick, desperate kiss to Marcus's lips. "After Chloe goes to sleep. Come to my room. I want you to fuck me properly, baby. I want you to claim every hole."

She adjusted her robe and hurried up the stairs, leaving Marcus alone in the cellar, his cock straining painfully against his zipper, his mind reeling with what had just occurred.

Dinner was a surreal experience. Marcus sat across from Vivian, watching her eat with delicate precision, her bare foot occasionally brushing against his calf under the table in teasing promise. Chloe chattered about her plans for the summer—hiking trails she wanted to explore, a photography project she intended to pursue, the possibility of getting a part-time job in Crescent Harbor.

"You're quiet, big brother," Chloe observed, tilting her head at him. "Something on your mind?"

"Just tired from the drive," Marcus lied, though his eyes kept drifting to the way her tank top gaped when she leaned forward, offering a tantalizing glimpse of her cleavage. He'd never looked at his stepsister this way before—had always maintained a protective, brotherly distance. But something had shifted in him tonight, some barrier crumbling under the weight of his arousal. He found himself wondering what she looked like naked, how she would sound when she came, whether her pussy would be as tight and hot as he imagined.

"Well, I'm beat," Vivian announced, rising from the table with a stretch that thrust her breasts forward prominently. "I think I'll turn in early. Chloe, don't stay up too late. Marcus, would you mind cleaning up?"

"Sure, Mom," he said, the word feeling strange now, loaded with new meaning.

Once Vivian had ascended the stairs, Chloe helped him clear the table, her hip bumping against his as they moved around the kitchen. "So," she said casually, loading dishes into the washer, "what's really going on with you and Mom?"

Marcus froze, a plate halfway to the cabinet. "What do you mean?"

"Come on, Marcus. I'm not blind. The way you two look at each other? The tension in the car? Something's happening." She turned to face him, her blue eyes startlingly perceptive. "Are you two... involved?"

Marcus set the plate down carefully, his mind racing. He could deny it, maintain the facade, but something in Chloe's expression suggested she already knew the truth. And perhaps wanted something more.

"Chloe, I—"

"It's okay," she interrupted, stepping closer. "I think it's hot, actually. Mom's gorgeous. And you're..." she trailed off, her gaze dropping to his groin before returning to his face, her cheeks flushing pink. "You're not exactly hard to look at either."

"Chloe," Marcus breathed, his heart hammering. "What are you saying?"

She bit her lip, suddenly looking very young and very vulnerable. "I'm saying I'm tired of being the virgin stepsister. I'm saying I want what Mom's getting. I'm saying..." she reached out and placed her hand on his chest, her fingers trembling slightly, "I want you to be my first, Marcus. I want my big brother to teach me everything."

The words hit him like a physical blow, his cock surging against his jeans with such force he thought he might burst through the denim. "Jesus, Chloe. We can't. You're my sister."

"Stepsister," she corrected, moving closer until her breasts brushed against his arm. "And I've wanted you since I was sixteen. Do you know how many times I've touched myself thinking about you? How many nights I've lain in bed listening for your footsteps, hoping you'd come to my room?" She pressed her palm against his erection, her eyes widening at the size of him. "Oh god, you're even bigger than I imagined."

Marcus groaned, his resistance crumbling. "Chloe, if we do this... there's no going back."

"I don't want to go back," she whispered, rising on her toes to press her lips to his.

The kiss was electric, explosive. Marcus wrapped his arms around her slender waist and pulled her flush against him, his tongue plunging into her mouth as she moaned and melted against him. She tasted of wine and innocence, her lips soft and eager as she surrendered to his expertise.

He backed her against the kitchen counter, his hands roaming her body with increasing boldness—cupping her firm breasts through her tank top, sliding down to grip her ass, pulling her against his throbbing length. She whimpered into his mouth, her hips grinding in instinctive rhythm.

"Have you ever been touched?" he asked against her neck, his fingers finding the hem of her shorts. "Has anyone ever made you cum?"

"N-no," she stammered, her breath hitching as his hand slipped into her panties. "Just me. I've only ever touched myself."

"Show me," he commanded, his fingers finding her slit, already soaked with arousal. "Show me how you touch yourself, baby sister."

Trembling, she reached down and guided his fingers to her clit, showing him the circular motion she used, the pressure she preferred. Marcus took over, his fingers dancing over her sensitive nub as he watched her face transform with pleasure.

"Oh god, Marcus, that's... that's perfect," she gasped, her head falling back against the cabinet. "Don't stop. Please don't stop."

He didn't. He worked her clit with expert precision, his other hand pushing her shorts down her legs until she was bare from the waist down, her golden curls glistening with her arousal. She was exquisite—pink and swollen and utterly untouched, her virgin pussy clenching around nothing as he brought her closer to the edge.

"Are you going to cum for me, Chloe?" he asked, his voice rough with desire. "Are you going to cum on your brother's fingers?"

"Yes, yes, I'm so close," she panted, her hips bucking against his hand. "Marcus, I'm... oh god, I'm cumming! I'm cumming!"

She cried out as her orgasm hit, her body convulsing, her juices coating his fingers as she clung to his shoulders for support. Marcus held her through it, gentling his touch as she came down from the peak, her breath coming in ragged gasps.

"That was..." she whispered, her eyes glazed with wonder. "That was incredible."

"That was just the beginning," Marcus promised, lifting his fingers to his mouth and sucking her essence from them, watching her eyes widen at the erotic display. "I'm going to make you cum so many times tonight, Chloe. I'm going to teach you everything. But first..."

He lifted her onto the counter, spreading her legs wide as he dropped to his knees before her. "First, I'm going to taste this virgin pussy. I'm going to eat you until you're begging for my cock."

"Marcus, wait, I've never—" her protest cut off as his tongue licked a long, slow stripe up her slit, gathering her arousal. She tasted different from Vivian—sweeter, lighter, with the freshness of youth. Marcus groaned against her flesh, his tongue probing her entrance before circling her clit with teasing precision.

"Oh my god," Chloe moaned, her hands flying to his hair. "That feels... oh god, that feels amazing."

He ate her with abandon, his tongue exploring every fold, his lips sucking at her sensitive flesh, his fingers joining the assault to stroke her G-spot while his mouth focused on her clit. Chloe writhed on the counter, her inhibitions dissolving under the onslaught of pleasure, her cries growing louder and more desperate.

"Please, Marcus, please," she begged, her hips lifting off the counter to grind against his face. "I need you inside me. I need to feel you. Please, big brother, take my virginity."

Marcus stood, his cock straining painfully against his jeans. "Are you sure, Chloe? Once I start, I won't be able to stop. I'm going to fuck you hard and deep, and I'm not going to pull out. I'm going to fill your virgin cunt with my cum."

"Yes," she whimpered, reaching for his belt. "Yes, please, I want it. I want your cum inside me. I want to be yours, Marcus. Completely yours."

He freed his cock, the thick, veined length springing free, the bulbous head already leaking precum. Chloe's eyes went wide at the sight, her hand reaching out to wrap around his girth, her fingers not quite meeting around his thickness.

"It's so big," she breathed, stroking him tentatively. "Will it fit?"

"We'll make it fit," Marcus growled, positioning himself at her entrance. He rubbed the head of his cock through her folds, coating himself in her arousal, feeling her tremble with anticipation. "This is going to hurt at first, baby. But I promise it gets better. Relax for me."

He pressed forward, the head of his cock breaching her tight entrance. Chloe gasped, her nails digging into his shoulders as he slowly, inexorably pushed forward, stretching her virgin channel around his thick shaft.

"Oh god, oh god, it's so big," she whimpered, tears springing to her eyes. "It hurts, Marcus."

"I know, baby, I know," he soothed, holding still to let her adjust. "Just breathe. Relax your muscles. Let me in."

He waited, kissing her tears away, his hands stroking her body until he felt her begin to soften around him. Then, with one powerful thrust, he buried himself to the hilt, breaking through her barrier and seating himself fully inside her tight, virgin pussy.

Chloe cried out, her body tensing, but Marcus held her close, whispering encouragement as he felt her walls fluttering around him, adjusting to his invasion. "You're doing so well, baby. So good for me. Feel how full you are? Feel how perfectly we fit together?"

"Yes," she gasped, her body slowly relaxing. "I feel... I feel so full. So complete. Oh god, Marcus, move. Please, move."

He began to thrust, slowly at first, letting her acclimate to the sensation of being filled. But as her moans grew louder, as her hips began to meet his strokes, he increased his pace, pounding into her with growing intensity.

"Yes, yes, yes," Chloe chanted, her head thrown back, her breasts bouncing with each impact. "Harder, Marcus. Fuck me harder. Make me yours."

He obliged, gripping her hips and driving into her with abandon, the sound of their bodies colliding filling the kitchen, mixing with her cries of pleasure and his grunts of effort. She was so tight, so hot, her virgin pussy gripping him like a velvet vice, milking his cock with every thrust.

"Touch yourself," he commanded, his voice strained. "Rub your clit while I fuck you. I want to feel you cum on my cock."

Chloe's hand flew to her clit, her fingers circling the sensitive nub as he pounded into her. Within moments, she was screaming, her orgasm crashing over her with devastating force, her pussy clamping down on his shaft in rhythmic contractions that threatened to push him over the edge.

"Fuck, Chloe, I'm going to cum," Marcus groaned, his thrusts becoming erratic. "I'm going to fill your virgin pussy with my seed. I'm going to breed you, baby sister."

"Yes, yes, cum inside me," she begged, her legs wrapping around his waist to pull him deeper. "Fill me up, Marcus. Make me your woman."

With a roar, he slammed home one final time, his cock pulsing as he released stream after stream of hot cum deep inside her unprotected womb. Chloe cried out at the sensation, her body convulsing with aftershocks as she felt him flooding her, marking her, claiming her as his own.

They stayed like that for long moments, joined in the most intimate way possible, their breathing slowly returning to normal. Marcus rested his forehead against hers, his cock still buried deep, already stirring with renewed interest.

"That was..." Chloe whispered, her eyes shining with emotion. "That was everything I dreamed it would be."

"That was just round one," Marcus promised, kissing her softly. "But we should probably get to bed before Mom comes looking for us."

They cleaned up quickly, Chloe wincing slightly as she moved, her thighs sticky with their combined fluids. Marcus helped her to her room, kissing her goodnight with promises of more to come.

But as he made his way down the hallway toward his own room, a figure stepped out of the shadows, blocking his path.

Vivian stood there, her silk robe hanging open to reveal her naked body, her eyes dark with a mixture of arousal and something else—possessiveness, perhaps, or jealousy.

"I heard you," she said softly, her voice trembling. "I heard you fucking your sister. I stood outside the kitchen and listened to you take her virginity, listened to you fill her with your cum."

"Mom, I—"

"Don't apologize," she interrupted, stepping closer, her hand reaching out to wrap around his still-hard cock. "I wanted to be angry. I wanted to be jealous. But all I could think about was how much I wanted to join you. How much I wanted to teach her how to please you properly." She stroked him slowly, her thumb spreading Chloe's lingering arousal over his sensitive head. "Take me to bed, Marcus. Show me what you showed her. And tomorrow... tomorrow, we'll figure out how to make this work. All three of us."

Marcus scooped her into his arms, carrying her toward the master bedroom with a sense of destiny settling over him. This summer would change everything. This summer, he would claim them both.

The next morning, Marcus woke to the sensation of a warm mouth wrapped around his cock. He groaned, his eyes fluttering open to find Vivian kneeling between his legs, her dark hair cascading over his thighs as she bobbed her head up and down his shaft with practiced skill.

"Good morning, baby," she purred, pulling off his cock with a wet pop, her lips swollen and glistening. "I thought I'd start your day right."

"Fuck, Mom," Marcus groaned, his hips bucking upward involuntarily. "That feels incredible."

"Mommy's going to take care of you," she promised, her hand stroking his length as she lowered her mouth to his balls, sucking each one into her mouth with gentle pressure. "Mommy's going to make you feel so good."

She returned to his cock, taking him deeper this time, her throat relaxing to accommodate his considerable length. Marcus watched in awe as she swallowed him to the root, her nose pressing against his pubic bone, her throat muscles massaging his shaft as she held him there.

"Jesus, where did you learn to do that?" he gasped.

"Years of practice," she winked, pulling back to catch her breath before diving down again. "But I've never enjoyed it as much as I do with you. Your cock is perfect, Marcus. Thick and long and so fucking hard for me."

She increased her pace, her hand working in tandem with her mouth, her other hand cupping his balls and rolling them gently. Marcus could feel his orgasm building, his thighs tensing as she drove him toward the edge.

"Wait," he gasped, pulling her off him. "I want to cum in your pussy. I want to fill you up while Chloe watches."

Vivian's eyes lit up with understanding and excitement. "You want your sister to see us?"

"I want her to learn," Marcus said, his voice thick with desire. "I want to teach her how to be a proper slut for her brother. Call her in."

Vivian crawled off the bed, her robe falling open to reveal her naked body, and opened the bedroom door. "Chloe, sweetheart, could you come here please?"

They heard footsteps, then Chloe appeared in the doorway, her eyes widening as she took in the scene—her brother naked on the bed, his cock glistening with their mother's saliva, Vivian standing nude and flushed beside him.

"Mom? Marcus? What's—"

"Come in and close the door, baby," Vivian instructed, her voice gentle but firm. "Your brother and I want to show you something. We want to teach you how to really please a man."

Chloe entered slowly, her gaze fixed on Marcus's erect cock. "I thought... I thought last night was..."

"Last night was beautiful," Marcus assured her, reaching out to take her hand and pull her onto the bed. "But there's so much more to learn. I want to teach you how to take my cock in every hole. I want to teach you how to submit completely to your brother's desires. Will you let me do that, Chloe? Will you be my good little slut?"

The dirty talk made her blush, but her eyes were dark with arousal. "Yes," she whispered. "I want to learn. I want to be yours completely."

"Good girl," Marcus praised, kissing her softly. "Now watch. Watch how Mommy takes my cock."

He pulled Vivian onto the bed, positioning her on her hands and knees before him. Her ass was a work of art—full and round, the dimples at the base of her spine begging to be kissed. Marcus ran his hands over her flesh, squeezing and spreading her cheeks to reveal the pink star of her asshole and the glistening slit of her pussy below.

"Your mother's pussy is soaked," he observed, sliding two fingers into her channel and pumping them slowly. "She's been waiting all night for this. Haven't you, Mom?"

"Yes," Vivian moaned, pushing back against his hand. "I've been dreaming about your cock inside me. Please, baby, fuck me. Fuck your mother like you fucked your sister."

Marcus positioned himself behind her, rubbing the head of his cock through her folds to coat himself in her arousal. Then, with one powerful thrust, he buried himself to the hilt in her welcoming heat.

"Oh god, yes!" Vivian screamed, her back arching as he filled her completely. "That's it, baby. Fuck me hard. Use your mother's cunt."

Marcus began to pound into her with abandon, his hips slapping against her ass with each thrust, the sound of their coupling filling the room. He watched Chloe's face, saw the hunger in her eyes as she watched him take their mother, and knew she was ready for more.

"Come here, baby," he commanded, reaching for her. "I want you to taste her. I want you to lick Mommy's clit while I fuck her."

Chloe hesitated for only a moment before moving into position beneath Vivian's spread legs. Marcus watched, his arousal spiking, as his stepsister tentatively extended her tongue and licked a stripe up their mother's slit, gathering her arousal.

"Oh god, Chloe," Vivian moaned, her body trembling. "That's it, baby. Lick Mommy's clit. Make me cum on your brother's cock."

Chloe grew bolder, her tongue circling Vivian's engorged clit with increasing confidence, her hands coming up to spread her mother's folds and give herself better access. The sight of the two women—mother and daughter—pleasuring each other while he fucked them both was the most erotic thing Marcus had ever witnessed.

"Fuck, that's so hot," he groaned, his thrusts becoming more urgent. "Chloe, finger her. Put your fingers inside her while I fuck her."

Chloe obeyed, sliding two fingers into her mother's pussy alongside Marcus's thrusting cock, feeling the way he stretched her, the way their mother clamped down around them both. Vivian was screaming now, her orgasm building rapidly under the dual assault.

"Don't stop, don't stop," she begged. "I'm going to cum. Oh god, I'm cumming!"

Her body convulsed, her pussy gripping Marcus's cock in rhythmic spasms that pushed him over the edge. With a roar, he slammed home one final time, his cock pulsing as he flooded her womb with his seed, filling her until their combined fluids leaked out around his shaft and onto Chloe's waiting tongue.

Chloe lapped at them greedily, her eyes glazed with lust, cleaning her mother's pussy and her brother's cock with eager devotion. When Marcus finally pulled out, she captured his softening length in her mouth, sucking their combined essences from him with moans of pleasure.

"Good girl," Marcus praised, stroking her hair as she cleaned him. "Such a good little cocksucker. You're learning fast."

"Teach me more," Chloe begged when she finally released him. "I want to learn everything. I want to be able to please you like Mom does."

"And you will," Marcus promised, pulling her up to kiss her, tasting their mother's arousal on her lips. "But first, I think Mom needs a break. Why don't you show me what you learned last night? Show me how you touch yourself."

Chloe lay back on the bed, spreading her legs wide to reveal her still-swollen pussy, glistening with the remnants of last night's deflowering and her fresh arousal. She began to touch herself, her fingers circling her clit with the rhythm Marcus had taught her, her hips lifting off the bed as she built toward orgasm.

"Look at her," Vivian whispered, curling up beside Marcus to watch. "She's so beautiful. So eager to learn. We could teach her so much, Marcus. We could make her into the perfect little fucktoy for you."

"Is that what you want?" Marcus asked, his cock already hardening again at the thought. "You want to help me train your daughter to be my personal slut?"

"Yes," Vivian breathed, her hand finding his renewed erection and stroking it slowly. "I want to watch you take her in every hole. I want to teach her how to deepthroat your cock, how to take it up her ass, how to serve her brother's every desire. I want to see you breed her, Marcus. I want to see your cum dripping from her used pussy."

"Then let's begin her proper education," Marcus decided, rising from the bed and moving to kneel between Chloe's spread thighs. "Lesson two: taking your brother's cock in your throat."

He positioned himself above her, his knees on either side of her head, his cock hanging heavy and hard above her face. "Open wide, baby. I'm going to fuck your mouth."

Chloe obeyed, her jaw stretching wide as he fed his thick length between her lips. He didn't give her time to adjust, pushing forward until he felt the back of her throat, then pulling back only to thrust forward again.

"Relax your throat," he instructed, his voice rough with arousal. "Breathe through your nose. Let me in."

He continued to thrust, shallow at first, then deeper as she learned to accommodate him. Soon he was sliding down her throat with each stroke, her lips stretched around his base, her eyes watering as she gazed up at him with adoration.

"Touch yourself," he commanded. "I want you to cum with my cock in your throat."

Chloe's hand flew to her clit, rubbing furiously as he face-fucked her with increasing intensity. The vibrations of her moans around his shaft drove him wild, his hips snapping forward as he used her mouth for his pleasure.

"Fuck, I'm going to cum," he warned, his balls tightening. "Swallow it, Chloe. Swallow every drop of your brother's cum."

With a roar, he erupted, his cock pulsing as he shot thick ropes of semen directly down her throat. Chloe swallowed convulsively, her throat working to take it all, her own orgasm crashing over her as she felt him marking her from the inside.

When he finally pulled out, she gasped for air, her face flushed and tear-streaked, her lips swollen and glistening. She looked utterly debauched, utterly claimed, and Marcus felt a surge of possessive pride.

"Good girl," he praised, collapsing beside her and gathering her into his arms. "You took it so well. I'm so proud of you."

"I loved it," Chloe whispered, nuzzling against his chest. "I loved feeling you use me. I want you to do it again. I want you to use all my holes, Marcus. I want to be yours completely."

"And you will be," he promised, kissing her tenderly. "By the end of this summer, you'll be trained to satisfy my every desire. And Mom will help me teach you."

Vivian crawled up beside them, her body pressed against Marcus's back, her hand reaching around to cup Chloe's breast. "We're going to make you into the perfect little fuckdoll for your brother," she whispered, her tongue tracing Chloe's ear. "And you're going to love every minute of it."

The days that followed blurred into a haze of constant sexual exploration. The three of them fell into a rhythm of debauchery that felt as natural as breathing—waking tangled together in Vivian's king-sized bed, their bodies slick with sweat and cum, spending the mornings teaching Chloe new ways to please her brother, the afternoons exploring the beach and the surrounding woods, always with an undercurrent of simmering desire that would erupt into passionate encounters at the slightest provocation.

Marcus found himself obsessed with the contrast between the two women—Vivian's mature, experienced body with its soft curves and knowing touch, and Chloe's youthful tightness, her eagerness to learn, her virgin tightness that still gripped him like a vice despite their daily fucking. He took them separately and together, in every room of the house, in the outdoor shower, on the beach under the stars. He taught Chloe to take him in her ass, Vivian guiding her through the initial pain until she was begging for it, pushing back against him with desperate need.

He bred them both repeatedly, flooding their wombs with his seed until they were walking around the house with his cum dripping down their thighs, marked and claimed in the most primitive way possible. The risk of pregnancy only added to the thrill—neither woman was on birth control, and the thought of filling their fertile wombs with his bastards made Marcus harder than he'd ever been in his life.

Two weeks into their stay, Marcus decided it was time to take things to the next level. He had plans for his women, fantasies he'd been harboring since the first night, and today he would make them reality.

He found them in the kitchen, preparing lunch—Vivian in a sheer negligee that did nothing to hide her body, Chloe in one of his old t-shirts and nothing else. They looked up as he entered, their faces lighting up with identical expressions of desire.

"There's my beautiful family," Marcus said, his voice thick with affection and lust. "I have plans for you today. Both of you."

"What kind of plans?" Vivian asked, her eyes dropping to the bulge in his shorts.

"The kind that involve you both being properly prepared for me," he said, moving to stand between them. "Chloe, go to my room and bring back the bag from the top shelf of the closet. Mom, you stay here."

Chloe hurried off, her bare feet padding on the hardwood floor, while Vivian turned to face him, her nipples already hardening under the silk. "What are you going to do to us?" she asked, her voice breathy with anticipation.

"Today, I'm going to claim your ass properly," Marcus said, his hand cupping her face. "Both of you. I want to feel my cock buried in your tightest holes, Mom. I want to fill your ass with my cum while Chloe watches, and then I want to do the same to her."

Vivian's eyes darkened, her breath hitching. "I've never... your father never..."

"Good," Marcus growled, his thumb tracing her lower lip. "I want to be the first. I want to stretch you open and make you mine in every way possible. Will you give me that, Mom? Will you let your son fuck your virgin ass?"

"Yes," she whispered, her body trembling. "Yes, baby. Take me. Take everything."

Chloe returned then, carrying a black leather bag that Marcus had packed with supplies—lubricant, toys, restraints. She set it on the counter, her eyes wide with curiosity. "What's all this?"

"Tools for your education," Marcus said, unzipping the bag and removing a bottle of premium silicone lube and a medium-sized butt plug. "Today, we're going to train your ass, baby sister. By tonight, you'll both be able to take my cock in your tightest holes."

He had them bend over the kitchen island, side by side, their asses presented to him like offerings. He started with Vivian, spreading her cheeks to reveal the puckered star of her asshole, still virgin-tight despite her sexual experience. He drizzled lube over her entrance, working it in with his fingers, first one, then two, scissoring them to stretch her open.

"Relax, Mom," he coached, feeling her tense around his fingers. "Push out. Let me in."

She obeyed, her muscles loosening enough for him to slide a third finger inside her, pumping slowly to prepare her for what was to come. When she was moaning and pushing back against his hand, he replaced his fingers with the butt plug, pressing the tapered tip against her entrance and pushing steadily until the widest part breached her ring and the plug seated itself inside her with a wet pop.