Laura was 24, the older sister who had always ruled the house. Tall, athletic, with long chestnut hair, sharp green eyes, and a body built from years of martial arts and yoga — strong legs, firm ass, and deceptively powerful arms. Her younger brother, Ethan, was 21, still living at home while finishing college. He had always been a little afraid of her… and hopelessly turned on by her dominance.
It started as a “sister game” when they were younger — silly wrestling matches that Laura always won. But over the last year, the games had evolved into something darker, more sexual, and far more painful.
One Friday night their parents were away for the weekend. Laura walked into the living room wearing tight black yoga shorts and a sports bra, her toned body on full display.
“Ready for a new sister game, little brother?” she asked with a wicked smile.
Ethan’s cock twitched. “What are the rules this time?”
Laura’s eyes gleamed. “Catfight style. Winner gets total control for the whole weekend. Loser has to submit to whatever the winner wants — tickling, ballbusting, facesitting, anything. No safe word.”
Ethan knew he should say no. But the sight of his dominant older sister, combined with the taboo thrill of incestuous femdom, made him agree.
They cleared the furniture and faced each other on the large rug. Laura attacked first.
The catfight was intense and erotic. They grappled, rolled, and pinned each other. Laura’s stronger body quickly gained the upper hand. She trapped Ethan in a schoolgirl pin, her thighs squeezing his head while her ass hovered just above his face.
“Smell your sister’s ass while you lose,” she laughed, grinding down.
Ethan struggled, but Laura was relentless. She shifted and locked her legs around his waist, squeezing until he tapped out.
“Looks like I win,” she purred. “Now the real sister game begins.”
Laura dragged him to her bedroom and tied his wrists to the headboard with soft ropes. She stripped him completely, leaving his hard cock exposed and vulnerable.
“First game: Tickle torture,” she announced.
She started slow — fingers dancing over his ribs, under his arms, down his sides. Ethan laughed and squirmed, begging her to stop. Laura’s laughter mixed with his as she straddled his waist, her strong fingers finding every sensitive spot.
“You’re so fucking ticklish,” she teased, digging into his hips. “Look how hard your cock is getting from your big sister torturing you.”
The tickling went on for nearly an hour. Laura was merciless, switching between light feathers she had prepared and her strong fingers. She tickled his balls lightly, making his cock leak pre-cum while he howled with laughter and desperation.
When he was a panting, sweaty mess, she moved to the next phase.
“Time for ballbusting, loser.”
Laura positioned herself between his spread legs. She started with light slaps, watching his cock bounce. Then harder taps with her palm. Ethan groaned in pain and pleasure.
“You like when your sister busts your balls?” she asked sweetly, before delivering a firm knee press against his sack.
The mixture of pain and taboo arousal was overwhelming. Laura alternated between tickling his inner thighs and delivering sharp, stinging ballbusts — slaps, squeezes, and light kicks. Every time he begged, she would sit on his face and make him smell and lick her through her shorts while continuing the torment.
By the end of the first night, Ethan was broken and completely submissive. Laura rode his face to multiple orgasms, then used his cock for her own pleasure while occasionally squeezing his sore balls as a reminder of who was in charge.
The entire weekend became one long sister game of femdom incest.
Saturday morning Laura woke him with more tickling, then made him crawl and worship her feet before another round of ballbusting. She discovered how much she loved the power — watching her little brother writhe while she controlled his pleasure and pain.
In the afternoon they had a naked “rematch” catfight on her bed. Laura won again easily, pinning him in a reverse facesit while punching his balls lightly with her fists.
“You’ll never beat me, little brother. I own these balls now.”
She edged him for hours — stroking his cock while tickling him or squeezing his balls whenever he got too close. When she finally let him cum, it was while she was sitting on his face and twisting his nipples.
Sunday was the most intense. Laura introduced new toys — a small paddle for his balls, feathers, and ice cubes for tickling. She dressed in a strappy black lingerie set that made her look like a true dominatrix sister.
The final sister game was a long, slow ballbusting session while she rode his cock. Every time she slammed down, she would squeeze or slap his balls. The pain made him thrust harder into her tight pussy.
“Cum for your big sister while I bust you,” she commanded.
Ethan exploded inside her with the most powerful orgasm of his life.
When their parents returned, the secret sister game continued in whispers and stolen moments — Laura cornering him in the hallway for quick ballbusts or tickle attacks, reminding him that he belonged to her.
Laura had turned their sibling rivalry into the ultimate femdom incest relationship, and Ethan was helplessly addicted to his cruel, beautiful sister’s games.
The weekend had only just begun, and Laura was far from finished with her little brother.
After the intense first night of tickling and ballbusting, Ethan woke up Sunday morning to the feeling of soft feathers dancing across his exposed balls. He jerked awake with a gasp, only to find his wrists still tied to the headboard and his dominant older sister straddling his chest, wearing nothing but a tiny black thong.
“Morning, loser,” Laura purred, dragging the feather slowly up his shaft. “Time for round two of the sister game.”
She looked breathtaking — her athletic body glowing in the morning light, long hair tousled, green eyes filled with wicked delight. At 24 she was in her prime, and she knew exactly how to use every inch of her power over her 21-year-old brother.
Laura started the day with prolonged tickle torture. She explored every sensitive spot on his body: the insides of his thighs, behind his knees, under his arms, and especially his balls and the head of his cock. She used feathers, her fingertips, her nails, and even her tongue to drive him insane with laughter and desperate arousal.
“You’re so pathetic when you laugh like this,” she teased, digging her fingers into his ribs while grinding her thong-covered pussy on his chest. “Big sister owns you completely.”
Ethan begged and squirmed, his cock throbbing painfully hard. Every time he got close to the edge from her teasing touches, Laura would deliver a sharp slap to his balls.
“Bad boy. No cumming yet.”
After nearly two hours of relentless tickling, Laura untied him for their second “catfight rematch.” This time they fought completely naked on her large bed. The grappling was far more erotic and brutal than the night before.
Laura used her martial arts training to her advantage — pinning him, scissoring his head between her powerful thighs, and smothering his face with her ass and pussy. Ethan managed to get on top once, but Laura quickly reversed it, trapping him in a schoolgirl pin and tickling his exposed armpits until he screamed with laughter.
The catfight ended the same way — with Laura on top, sitting full-weight on his face while she slapped and squeezed his sore balls.
“Smell your big sister’s pussy while I bust you,” she moaned, grinding her wet folds over his mouth and nose. The scent of her arousal was thick and intoxicating after all the wrestling.
She kept him there until she came hard, flooding his face with her juices.
For the afternoon session, Laura introduced new elements to the sister game. She brought out a small wooden paddle and a bottle of baby oil. First she oiled his entire body, making him extra sensitive for tickling. Then she made him stand with his legs spread while she delivered precise, stinging paddle strokes to his balls.
Each impact sent waves of pain and twisted pleasure through him. Laura alternated between paddling, tickling the head of his cock with her fingers, and stroking him slowly.
“You love when your own sister destroys your balls, don’t you?” she whispered, delivering another firm smack. “Say it.”
“I love it… when my sister busts my balls,” Ethan gasped.
Laura rewarded him by riding his face again, this time facing his cock so she could continue the ballbusting while he licked her. She came twice like that, using his tongue and nose as her personal toy.
By evening, Ethan was a broken, desperate mess. Laura finally allowed him to fuck her — but only on her terms. She tied his hands behind his back and rode him reverse cowgirl, controlling the pace while occasionally reaching back to squeeze or slap his swollen balls.
The combination of her tight, wet pussy and the constant pain kept him on the edge for over an hour. When she finally permitted him to cum, she slammed down hard and squeezed his balls tightly at the exact moment he exploded deep inside her.
The orgasm was shattering.
Afterward, instead of aftercare, Laura kept the domination going. She made him clean his own cum from her pussy with his tongue while she gently tickled his sides, keeping him in a state of submissive bliss.
As they lay together that night, Laura stroked his hair and whispered, “This sister game is never going to end, little brother. Every weekend Mom and Dad are gone, you belong to me. And I have so many more games planned.”
Ethan, sore, exhausted, and completely addicted, could only nod and whisper, “Yes, Laura.”
The taboo incest femdom relationship between brother and sister had only just got hot.
The final day of the weekend was the most intense yet. Laura woke up with fresh, cruel ideas for her little brother.
She started by dragging Ethan into the shower for a “wet catfight.” The slippery tiles made their naked wrestling even more chaotic and erotic. They grappled under the hot spray, bodies sliding against each other. Laura used her strength and skill to pin him against the wall, her breasts pressed to his chest as she reached down and delivered a series of firm, wet ballbusts with her knee.
“Submit to your big sister,” she growled, squeezing his balls in her soapy hand while water cascaded over them.
Ethan tapped out quickly. Laura rewarded his submission by making him drop to his knees and eat her pussy while the shower rained down on them. She came hard, holding his head in place as her legs shook.
After the shower, they returned to the bedroom for the grand finale of the sister game. Laura tied Ethan spread-eagle to the bed, completely helpless. She spent the next two hours combining all her favorite tortures — tickle, ballbusting, and facesitting — into one long, merciless session.
She started with feathers and her nails, tickling him until he was hoarse from laughing. Then she straddled his face in reverse, her perfect ass smothering him while she used both hands to work over his cock and balls. Light tickles on his shaft mixed with sharp slaps and squeezes to his sack.
“You’re going to remember this sister game every time you look at me from now on,” Laura moaned, grinding her wet pussy on his tongue. “Every time you get hard, you’ll think of your dominant older sister busting your balls.”
She edged him repeatedly. Every time he got close, she would stop stroking and deliver a painful series of ballbusts — palm slaps, finger flicks, and even light punches that made him cry out into her pussy. The pain only made him more desperate to please her.
Laura came multiple times on his face, each orgasm more powerful than the last. Her juices coated his chin and chest. The room filled with the heavy scent of her arousal and their sweat.
For the final round, Laura untied him for one last naked catfight. This one was slower and more sensual. They rolled around the bed, groping and pinning each other. Laura let him think he had a chance before reversing and trapping him in a tight headscissor.
While squeezing his head between her powerful thighs, she reached down and started stroking his cock. The combination of pain from her legs and pleasure from her hand was overwhelming. She brought him right to the edge… then squeezed his balls hard while ordering him to cum.
Ethan exploded across his own stomach in one of the most intense orgasms of his life, ropes of cum shooting while Laura laughed triumphantly and kept squeezing.
Afterward, she was surprisingly gentle during aftercare. She untied him fully, cleaned him with a warm cloth, and pulled him into her arms. They lay together, naked and exhausted.
“This doesn’t end when Mom and Dad come home,” Laura whispered, stroking his hair. “The sister game continues in secret. Quick ballbusts in the hallway, late-night tickle torture in my room, facesitting when they’re asleep downstairs… You belong to me now, little brother.”
Ethan, completely broken and in love with the taboo, kissed her neck and answered, “I’m yours, Laura. Always.”
The cruel, addictive sister game between Laura and Ethan had transformed their relationship forever. What started as playful wrestling became a deep, dark femdom incest bond filled with catfights, tickling, ballbusting, and total surrender.
And they both couldn’t wait for the next time their parents left town.
The End
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