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Rounds with my Rival: A Knockout Tale of Sibling Rivalry

Chapter One: A Sibling Rivalry

Bella's fists pounded against the broken punching bag, the sound of leather on canvas filling the garage. Her training had been interrupted, and she was not pleased. She shot a glare at Max, her brother, who was lounging against the doorframe.

"What are you doing here, useless lump?" she called out, not bothering to hide the irritation in her voice.

Max raised an eyebrow, trying to defend himself. "Hey, I was just-"

"You were just what?" Bella interrupted, her voice dripping with sarcasm. "Not helping me find a replacement for this piece of crap?" She gestured toward the broken bag, her frustration evident.

Max opened his mouth to respond, but Bella cut him off. "You're only good for one thing, you know," she said, her eyes landing on Max's crotch.

Max's eyes widened as he realized what she was implying. "Bella, no-"

But Bella was already moving, pulling out a length of rope and a hook from her training equipment. She smirked at Max, her eyes sparkling with mischief. "You're about to become the most useful you've ever been," she said.

Max tried to protest, but Bella ignored him, quickly tying the rope around his balls. Max winced as she tightened the knot, but Bella was careful not to hurt him too much.

"Big baby," she teased, as Max tried to hide his discomfort.

Bella then hooked the rope onto the ceiling, suspending Max in mid-air. He tried to struggle free, but Bella held him in place, her grip firm.

She stepped back and admired her work, a satisfied smile on her face. "You're now my personal punching bag," she said, her voice filled with power and control.

Max was humiliated, but also aroused by the situation. He tried to hide his arousal, but Bella noticed and playfully insulted him. "Pervert," she said, her voice filled with amusement.

Bella started punching Max's balls, careful not to hurt him too much. Max grunted with each blow, but also moaned with pleasure. Bella continued punching, enjoying the feeling of power and control. Max was in pure bliss, his arousal growing with each blow.

Bella decided to take it to the next level. She started using her kicks, aiming for Max's crotch. Max screamed with pleasure, his arousal reaching new heights. Bella kept going, her blows becoming more intense. Max was on the brink of orgasm, his body tensing with each blow.

Bella landed one final, powerful kick. Max screamed, his body convulsing with pleasure as he orgasmed. Bella stepped back, admiring her work. She smirked at Max, telling him he'd been a "good boy" and that she'd consider using him again for her training. Max was left suspended, exhausted and satisfied.

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