The sibling boxing match begins

The moment of the fight came. Billy had tried to avoid it, tried to stop after just teaching his younger sister the basics, but his mom quickly put a stop to that.

“I’m tired, mom.”

“You can go to sleep later honey,” she’d said, holding back a smirk. “How can Anna retain any of what you’ve taught her if you don’t have a light back-and-forth to end the session?”

It was a strange position to be in. Looking across from her now, he knew he had no reason to fear her. To be as afraid of her as he was. But while she had those gloves on, he couldn’t help but be afraid. Even while reluctantly teaching her a basic stance and some striking fundamentals, Billy had been nervous to teach her too much for fear of what a skilled Anna might be able to do with those gloves.

Billy tried to calm himself down. She’s just your younger sister, he thought. She doesn’t have a clue what she’s doing. She’s not even interested in this stuff. Mom was always enthusiastic when she was knocking the stuffings out of me, and she’s got those hips to generate more **** too. Anna only has the gloves. I can’t possibly lose to her.

Even still, he wasn’t sure. His heart beat fast as he pictured bookworm Anna coming into his sport and knocking him out on day one. Standing high above her down-and-out older brother, gloved fist still outstretched and face a mask of total confusion. She’d never let him live it down. She’d never let him forget. And it all made him much more excited than it should have, even as he tried to suppress those feelings.

Despite her low interest, Anna was a fast learner, and not wanting to disappoint her mom she reached the point of the match with Billy soon. Now she stood across an emptied living room from Billy, in a tank top and sweatpants, eyeing up her brother carefully. She was clearly a bit intimidated. ****. Scared, even. It was only a short show of a match so she could practice the punches, make mom happy, and then never do this dumb sport again, but Billy had been doing this for years and she was still worried her much bigger older brother could hurt her.

“Ready to start, you two?” Heather asked, still wearing that signature sports bra of doom. Billy’s cock lurched just looking near it, as his mother lounged on a shifted living room couch. It felt like she was sticking her bust out towards him intentionally, almost as a show of power. His mom’s huge tits were a bad enough distraction on their own.

“I guess…” Anna said, reluctantly. “Let’s just go. How do you win again?”

Standing across from her now, Billy became aware of just how much of his mom’s genes his little sister had inherited. He had always been more drawn to the mature figures of Heather and Aunt Judy, but Anna was quite the shortstack. Her filled-up tank top made it all the more clear that, at the end of the day, she was just a girl. Billy should have no trouble… right?

The match started slow at first, Anna too nervous to move in and Billy feeling the exact same thing. With those gloves on, there was real power in his little sister’s fists, and he didn’t want her to realise it.

It was mostly a game of Billy keeping distance and using his longer reach to lightly jab at his sister. It was only now he realised that they didn’t set up any rules for this match - a glance at his lounging mother told him that they’d fight until she was satisfied.

Right, Billy thought. I need to get Anna tired. That shouldn’t be too tough.

Unfortunately, it was harder than he expected. Anna was fit, and with how hesitant she was to throw any punches, and Billy controlling the range on his own, his superior gas tank was draining at a much higher rate than Anna’s. It wasn’t clear who would run out of steam first - and Billy did not want to be too tired to hold his gloves up or move with Anna still full of energy.

It wasn’t a problem for long. As the fight went on, Anna was slowly gaining confidence. She noticed the panic with which Billy avoiding her punches, and the way he was keeping his distance. She wasn’t sure why. Was he being nice? Was he really just tired? Or did he secretly suck at boxing, or something? Whatever the case, Anna’s shoulders broadened and a smile came to her face as she realised she wasn’t actually in danger, just practicing sparring.

“Hehe, you’re moving around like you’re scared of me, Billy.” Anna giggled. It came across like a taunt, even though she’d only meant it as a funny comment, thanks to the biting truth she didn’t realise was behind it. Billy’s face turned beet red.

Alright, that was it. He couldn’t let Anna act like this while mom was watching. She’d picked up the training well, but she had barely thrown any punches yet, and he had nothing to be afraid of. All he had to do was rush in and knock her on her ass so she wouldn’t want to continue anymore. That’d show his mom. He just had to… take a second to build up the nerve.