Brother From Another Mother - Cover

Brother From Another Mother

Copyright© 2025 by thundermax

Chapter 1

Incest Sex Story: Chapter 1 - At his brother's wedding, Max discovers Elliot, his new brother-in-law, has a twisted relationship with his mother, Karen. Max witnesses and records their intense, incestuous encounter. Later, Elliot proposes a disturbing deal to Max, involving both Karen and Emily. Max is left reeling, conflicted by desire and moral uncertainty, standing on the brink of uncharted territories and new realities in relationships.

Caution: This Incest Sex Story contains strong sexual content, including mt/ft   mt/Fa   Blackmail   Mind Control   Rape   Cheating   Cuckold   Sharing   Slut Wife   Wimp Husband   Incest   Mother   Son   Brother   Sister   MaleDom   Rough   Spanking   Group Sex   Anal Sex   Masturbation   Oral Sex   Pregnancy   Tit-Fucking  

Max’s parents died in a car accident when he was just 7 years old. David, who is 10 years older than Max, and Max were both raised by their grandmother. Since then, David has been a father figure to him.

It is the day of his brother David’s wedding, and Max, now 18, is the best man. Today, David is getting married, and his soon-to-be sister-in-law, Emily, is both beautiful and kind to Max.

Max is captivated by Emily’s beauty and finds himself developing a crush on her.

As the wedding ceremony concludes, Max stands beside David, his heart a mix of joy and longing. The reception is a whirlwind of laughter, toasts, and well-wishes. Max can’t help but steal glances at Emily, her happiness infectious and her beauty radiant.

Meanwhile, Max’s new mother-in-law, Karen, is a striking presence at the reception. She is a more mature and voluptuous version of Emily, with the same captivating features but enhanced by time and experience. Her busty figure and confident demeanor turn heads, and Max can’t help but notice the similarities and differences between mother and daughter. Karen’s energy is electric, and she moves through the crowd with ease, charming everyone she meets.

Elliot, Karen’s son and Max’s new brother-in-law, is surprisingly similar in age to Max, making them almost the same age. Elliot is tall and handsome, with a mischievous glint in his eye that suggests he’s just as likely to cause trouble as he is to join in on the festivities. He and Max hit it off immediately, their shared age and newfound family bond creating an instant connection. Elliot is clearly proud of his mother and sister, and he regales Max with stories of their adventures growing up.

As the night wears on, Max finds himself torn between his admiration for Emily and his newfound friendship with Elliot. He can’t help but feel a pang of jealousy when he sees Elliot dancing with Emily, their laughter and joy a stark reminder of what he wishes he could have. Karen, noticing Max’s contemplative mood, pulls him aside for a dance, her eyes twinkling with a mix of mischief and understanding.

“You know, Max,” she says softly, “family is about more than just blood. It’s about the people who choose to stand by you, no matter what. You and David have that special bond, and now, so do you and Emily and Elliot.” She smiles warmly, her hand resting gently on his shoulder. “Just remember, sometimes family comes in the most unexpected ways.”

Max nods, her words sinking in as he looks out at the dance floor, where Emily and Elliot are still laughing and dancing. He takes a deep breath, determined to enjoy the moment and cherish the new family he has gained.

As Max dances with Karen, he is struck by her radiant beauty. Her smile is warm and inviting, her perfect white teeth contrasting with her milky, flawless skin. Her blonde hair cascades over her shoulders in soft waves, catching the light and shimmering with every movement. Max can’t help but notice the way her dress hugs her curves, accentuating her huge, round ass that sways hypnotically with the music.

As they move closer, Max feels the weight of her heavy breasts pressing against his chest, the sensation both thrilling and overwhelming. Her scent, a mix of expensive perfume and something uniquely her, fills his senses, making it hard for him to focus. Her soft skin brushes against his, and he can feel the heat radiating from her body, igniting a fire within him.

Karen’s eyes, a deep blue, hold a newfound motherly love as she looks at Max. Her gaze is gentle and caring, and she seems genuinely happy to have him in her life. “Max,” she murmurs, her voice soft and soothing, “I’m so glad you’re part of our family now. You and David have been through so much, and I want you to know that we’re here for you, always.”

Max swallows hard, trying to control his body’s response to her proximity. Her words are kind, but her presence is intoxicating. He can feel his cock stirring, the pressure building as he struggles to maintain his composure. He tries to focus on her words, on the warmth of her smile, but his mind is clouded with desire.

As the song ends, Karen pulls back slightly, her hands still resting on his shoulders. “You’re a good boy, Max,” she says, her voice laced with affection. “Remember that. And remember that you’re always welcome in our home.”

Max nods, his voice caught in his throat. He watches as she walks away, her hips swaying gently, and he can’t help but feel a mix of gratitude and longing. The night is filled with new connections and unexpected emotions, and Max knows that his life will never be the same.

As Karen walks away, Max continues to stand there, his mind still reeling from their dance. He looks out at the dance floor and sees Elliot still dancing with Emily. Their bodies are pressed close together, and Max can see the intimacy between them.

It feels weird to Max, especially when he sees Elliot’s hands resting on Emily’s ass, squeezing gently. Max looks around, wondering if anyone else has noticed, but everyone is too busy enjoying the celebration to pay attention.

Elliot catches Max’s eye and winks, a mischievous grin spreading across his face. He then secretly grabs Emily’s boobs, squeezing them hard. Max shakes his head, a mix of disbelief and amusement washing over him. He can’t help but feel a twinge of jealousy and a sense of protectiveness over Emily, even as he acknowledges the undeniable chemistry between his new brother-in-law and his sister-in-law.

As David approaches Emily, Elliot steps back, allowing his brother to take over. David and Emily continue their dance, their movements fluid and harmonious.

Max watches from a distance, his mind racing with questions and thoughts about the intimacy he witnessed. He can’t shake the image of Elliot squeezing Emily’s boobs, and the fact that she seemed okay with it. Are they closer than he thought? Is Elliot really fooling around with his own sister?

Just as Max is searching for Elliot, he sees him taking his mother’s hand and leading her away from the party. Max looks around, ensuring no one is paying attention, and then slowly departs from the main area, secretly following Elliot. He keeps a safe distance, his heart pounding with a mix of curiosity and apprehension.

Max sees Elliot leading Karen to the back of the island, where the trees are denser and the path less traveled. He hides behind a large palm tree, watching as they stop near a secluded cave. The moonlight filters through the leaves, casting dappled shadows on the ground. Max holds his breath, wondering what will happen next.

Max inches closer, his heart racing as he tries to hear their conversation. He crouches behind a large bush and a big rock, his ears straining to catch every word.

“Elliot, what are you doing? We need to get back into the party.” Karen pleads, her voice laced with nervousness.

“I’ll be very quick, Mom. Did you forget our deal? I leave her alone if you become my slave,” Elliot replies, his voice low and commanding.

With that, Elliot spins Karen around, pulling her close against him. He starts kissing her neck, his hands roaming over her body. Max can hear Karen’s soft moans, a mix of pleasure and resistance.

“Mmmmm ... Oh, Elliot! No, please!” Karen’s voice is a whisper, but Max can hear the desire beneath her protests. He watches, his breath caught in his throat, as Elliot continues to explore her body, his hands and lips moving with a familiarity that suggests this is not their first encounter.

Elliot, with a forceful tug, yanks Karen’s dress down, exposing her breasts. Max can’t believe what he’s witnessing. Elliot is violating his own mother, and the sight is both shocking and disturbing.

“Look at these boobs, they are meant to be sucked, fucked, and played with,” Elliot growls, his voice laced with lust and dominance.

“Ahhh...” Karen cries out, a mix of pain and pleasure in her voice. Max watches in horror and fascination as Elliot begins to explore her body.

Elliot spins Karen around again, his movements swift and dominant. He lifts her right leg and wraps it around his waist, pulling her close. His hand grips her right breast hard, squeezing and kneading the flesh. “Ahhh...” Karen cries out again, her voice a mix of pleasure and discomfort.

Max’s eyes are glued to the scene, his heart pounding in his chest. Karen’s breasts are milky white, with a hint of redness around Elliot’s grip, a stark contrast to her smooth, pink nipples, which resemble her lips.

The sight is erotic and forbidden, and Max can’t look away as Elliot leans down and closes his mouth around one of her pink nipples, sucking and biting gently. Karen’s moans fill the air, a symphony of desire and submission.

“Babyyyy ... Ahhhh ... Don’t bite them, pleeeese! Ahhhh ... Awwwww” Karen begged, her voice a mix of pleasure and pain, each syllable a testament to her submission and desire.

Max, hidden behind the rock, is aroused by her moans, her voice a siren’s call that stirs something primal within him. The way she squeals, the way her voice quivers with each breath, is equally erotic as the taboo scene unfolding before him.

He can feel his own body responding, his heart racing and his breath coming in short gasps. The forbidden nature of it all, the raw and unfiltered display of power and submission, is intoxicating.

Max’s mind drifts to the way Elliot had handled Emily earlier, squeezing her ass and boobs with a familiarity that suggested a deeper intimacy. He wonders if Elliot treats Emily the same way, if his brother knows about this dark secret. The thought sends a shiver down his spine, a mix of excitement and trepidation.

Max quickly takes his phone out and starts recording the scene secretly, his hands shaking slightly as he captures the erotic and taboo moment. The video plays out, Karen’s pleading voice filling the air, a mix of desire and fear.

“Honey!, please you can have me however you want once we go home, not here. Please ... Ahhhh ... Nooooo ... It hurts ... Stop biting baby! please...” Karen begs, her voice a erotic tone that sends shivers down Max’s spine.

“What if someone catches us, Awwww...” Karen says, her voice a nervous whisper.

“Let them catch us,” Elliot replies, his voice dark and dominating. “They will know you belong to me, they will know what a mommy slut you are.”

With that, Elliot pushes Karen to her knees before him, his eyes never leaving hers. “Take it out and start sucking, Mom,” he commands, his voice leaving no room for argument.

Max watches in awe and horror as Karen complies, her hands trembling as she reaches for Elliot’s belt. The scene is a blur of erotic and forbidden desires, and Max can’t help but feel a mix of arousal and disbelief as he continues to record.

Max watches in a mix of fascination and horror as Karen, tears streaming down her face, takes Elliot’s already hard cock into her mouth. The sight is both erotic and disturbing, and Max can’t help but wonder why she’s complying. She could have walked away, but something, some unseen deal or power dynamic, keeps her there, submitting to her son’s demands.

Elliot grabs Karen’s beautiful blonde hair, yanking it hard, taking control of the situation. He starts moving her head up and down on his throbbing member, setting the pace and depth. Max is mesmerized by the scene, his eyes glued to the way Karen’s boobs swing with each movement, her body swaying as Elliot dominates her.

“Yeah, mommy. Take it, take everything in,” Elliot says, his voice a mix of pleasure and command as he looks up at the sky, a smirk playing on his lips.

Max can’t help but touch himself through his pants, his own arousal building as he watches the forbidden scene unfold. He’s rock hard, his body responding to the raw and unfiltered display of power and submission.

“Gawk, Gawk, Gawk...” Karen gags, having trouble holding the cock in her mouth. Max can see the water forming around her eyes, a mix of tears and saliva, as she struggles to comply with Elliot’s demands. The sight is both heart-wrenching and arousing, a testament to the complex and twisted dynamics at play.

Before Max can process that this might be the end of the taboo event, Elliot stops fucking Karen’s face and instead grabs her by the arms, pulling her up and positioning himself behind her. Max realizes with a jolt what is about to happen. Elliot is going to fuck her. The reality of the incestuous act hits him like a punch to the gut, and his eyes widen in shock as he continues to record, his hands shaking slightly.

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