Anna

"I can do it!" A high-pitched voice rang in the gym. Billy knew this bratty voice. It was the same flirtatious voice she had used after she snuck into his room and **** him to admit that she was the better boxer. The voice she had when she was sat astride him, hands on either side of his head, with her large tits hanging menacingly above him. The voice of his superior little sister.

They just looked towards each other, a silent war brewing between them. The entire gym seemed to go silent. No one wanted to disturb the fragile peace between them. But eventually one of them had to give.

Billy looked into Anna's eyes and he could see the superiority she held over him. What she made him say that night, it stuck with her as much as it did with him. She truly believed she was better at him in any activity, if she put her mind to it. She had convinced herself that she was just better.

From her vantage point, that was the only logical conclusion. She had trained boxing for just over an hour, and afterwards during a sparring match with a supposed champion, she controlled the pace the entire time, made her opponent too scared to engage, so much so that he looked like he was too afraid to come close, and ducked and weaved her way around his expert punches before firing one of her own - a knockout punch. Her first punch to hit fully, causing an immediate knockout.

She. Was. Superior.

Only Billy knew the truth though. That the only reason Anna beat him was because of the loaded gloves. She was a fast learner, her technique was pretty good, and her maneuvering before the knockout was downright better than some of the boxers he'd faced professionally. But the reason she got that knockout win, no the reason she got ANY win at all is because of her unfair advantage.

But that wasn't a problem anymore.

Billy realized that he had the upper hand. The element of surprise. The bratty little girl would go in for a knockout punch and would be taken aback when nothing happens. It'll be the easiest match of his life.

"Sure, nothing like a good little sibling rivalry," he said, smirking. "Come up here and show the rest of these girls how it's done."

Anna walked towards the stage, hips swaying in the same way they did that fateful night. The similarities continued, as she was also dressed in the same tank top and sweatpants she had on when she fought him the first time. A deliberate choice no doubt, she wanted to get in his head, make him flustered, and then go in for the kill. This time in front of an audience.

Anna stood in front of her brother, waiting for the action to start.

"Well everyone, I have to come clean," Billy started, staring across at the audience. "I have already given our guest some basic training at home, so that won't be necessary for her." He chose to omit the sparring part. "But you still need to learn them, so how about this. Me and Anna skip straight to the match, and then after we're done, I can talk you through what happened, step by step."

The gym was filled with young girls excited to watch an actual match instead of getting a boring presentation. Even better, it would be given by the athletic, popular, and hot boxing champion himself. It was a win-win. Well except for Anna, who was a loser in Billy's mind. Soon enough, he was thinking.

"Yeah Billy, beat her ass," came a shout from the section for the tomboys.

"Oh my god, he is going to beat the shit out of her," said the popular girls.

"Go Billy! We believe in you," said the cheerleaders.

Anna didn't have many supporters, being a shy and secluded student herself. But she had confidence and logic behind her so she couldn't fail. Secretly however, many of the girls dreamed of a scenario where the big bad boxer gets put on his ass by the young girl. If only such a thing could happen.