Carly toys with "Billy"

The mystery girl replied fairly quickly after waking up, eagerly ripping her old punching bag into shreds for ****. Anna groaned softly with pleasure as she felt herself become wet once more, feeling the power that had been handed to her.

Unknown: morning my bitch! or should I say afternoon? ;p u hav trouble sleeping? hav dreams of me beating you down?~

Frantically, Anna started to type out another humiliating message, pretending to be the weary boxer whose pride had been utterly demolished. Anna giggled, biting her lower lip as she typed it out. The thrill of playing the victim was intoxicating. Being able to take all the **** and humiliation, knowing it was just a game, made her pussy throb with excitement.

“Billy”: I barely slept. Kept dreaming about how you punched me. Kept hearing the sound of your gloves hitting my face.

Anna paused, her finger hovering over the send button. She wanted to make sure this was perfect. To really sell the performance. The mystery girl seemed to be eating it up, so why not lean into it? She added another line, hoping to push the humiliation further.

“Billy”: I woke up with bruises everywhere. My whole body hurts. You really did a number on me.

The response came almost instantly, and Anna could practically hear the smug satisfaction in the words as she read them. This girl was enjoying every second of this exchange. So was Anna, judging by the way her thighs were slick with arousal.

Unknown: awww poor baby, did I break u? XD LOL! hope u like ur new bruises. bet they look cute on ur dumb face

Anna moaned softly, her free hand slipping between her legs to rub slow circles over her clit. The way this stranger talked, as if she truly had destroyed Anna's champion brother, was making her dizzy with need. She typed out another message, her fingers moving quickly across the screen.

“Billy”: I hate that you’re so strong. I hate that you’re so fast. I hate that you beat me. I hate that I can’t stop thinking about it!

Anna's breath caught in her throat as she hit send, wondering how far she could push this charade. How long she could keep this girl and her delicious banter going. But mostly, another part, the part that was growing increasingly wetter by the second, wanted to see just how far she could take this humiliation to tear down her brother. Anna bit her lip, waiting for the response with bated breath.

When it came, Anna nearly screamed with delight. The girl was playing along perfectly, picking Billy apart piece by piece.

Unknown: hahaha oh my god, u really ARE broken! ur so pathetic, crying about how much u hate me. im gonna enjoy breaking u more n more every time we fight. watch out, cuz next time, Coach wont save u. Im putting ur lights out~

The message was followed up with a photo, and Anna got her first look at her brother's tormentor. The girl was cute, her hair kind of frizzy and curly. Anna was fairly certain she'd seen her before. The girl almost looked like a buff Hermione Granger, which to Anna's nerd brain basically tripled her hotness. She was wearing a pale blue bikini that clung tightly to her toned, curvy body. One arm was flexed, her hard-earned bicep springing to life. Her boobs weren't huge, but they were clearly there. Her abs were defined, yet still had a soft, feminine look.

But what really popped were her legs! Smooth and strong and thick. The sculpt on the muscle was clear, even to someone who had as little athletic experience as Anna. Anna, her mom, her aunt, they all had naturally thick thighs. From the looks of it, this girl did too, only she had forged them into deadly weapons...

Anna whimpered, her fingers working faster between her legs as she imagined the scene. The mystery girl standing over Billy, victorious, while he lay helpless on the mat. Her posing over his beaten body just like in the picture. The fantasy was too much; she arched her back and came hard, her toes curling as waves of pleasure crashed through her body. For a long moment, she could only lie there, gasping, the phone still clutched tightly in her hand.

When there was no immediate response, the mystery girl sent another message.

Unknown: r u jerking to me, Billy?~

Anna's mind raced as she tried to formulate a response. She knew she had to keep up the facade, but the image of the mystery girl's powerful physique was seared into her brain. The way her muscles rippled beneath that tight bikini, the confidence in her stance... it was enough to make Anna's knees weak.

Screw it. She was trying to tear down Billy anyway. With shaky fingers, she typed out a reply, trying to match the level of humiliation and desire in the other girl's messages.

"Billy": Yes... I'm touching myself to your picture. I can't help it. You're so sexy when you're beating me down.

Anna hit send before she could second-guess herself, her heart pounding in her chest. She knew she was treading dangerous waters here, but the thrill of the risk only heightened her arousal.

The response came within seconds, and Anna could feel her pulse quicken as she read the words on the screen. The mystery girl was clearly enjoying this game just as much as she was, and that realization sent a fresh wave of heat flooding through Anna's body.

Unknown: awww, does my little bitch wanna fuck me now? ;p ur so pathetic, u get turned on by getting owned by a girl. i bet u dream about it every night, dont u?

Anna bit her lip, her free hand trailing down her stomach towards the damp fabric between her legs. She was soaked, her arousal dripping down her thighs as she imagined the mystery girl looming over her, taunting her with every movement. The power dynamic was intoxicating. Being completely dominated, yet somehow finding pleasure in the submission.

Another message arrived, this one accompanied by a video.

With trembling fingers, Anna opened the video attachment. What she saw made her moan aloud. A close-up shot of the mystery girl's face, her lips curled into a wicked smirk as she spoke directly into the camera:

"You're mine now, Billy. My personal punching bag. Whenever I want to let off some steam, I'm coming straight for you. And you're going to love every second of it, aren't you?~"

The girl winked, and flexed her bicep again, making Anna whimper with need. This girl was perfect! And strangely familiar. Anna was sure she had seen that cute face, heard that confident purr, but she couldn't place where. Especially not with her brain so hazed with need.

Anna watched the video again and again, each viewing sending jolts of electricity through her core. The way the girl spoke, the absolute certainty in her tone, that she owned Billy, that he belonged to her... It was enough to make Anna's head spin with lust. She kept going, fingering herself until she squirted in time with the girl's sexy, degrading wink.

Finally, after several minutes of staring at the screen in a daze, Anna managed to compose herself enough to respond. But the girl beat her to it.

Unknown: guess ur busy getting off right now, perv. thats fine. im done with you anyway. gonna go enjoy the pool while u think of me beating u into the floor ;* byeeee~

Anna's eyes widened as she read the final message. The mystery girl was ending the conversation abruptly, leaving her hanging in the most infuriating way possible. Anna wanted to scream in frustration! But also in arousal, because damn, that kind of dismissal was hot!

She tossed the phone aside and flopped back onto the bed, her body still humming with residual pleasure. The memory of the girl's smug grin and flexing muscles played on a loop in her mind, making her wish she could see her in person. Maybe she could arrange a meeting? Convince the girl to come over?

Anna purred, rubbing her thick thighs together. She had successfully humiliated her brother through someone else's hands, and it felt incredible. She kept thinking about how this girl had put her brother down, constantly touching herself to the picture of the girl in her bikini. Fuck, why did she look so familiar?!

After several minutes of racking her brain, she'd had enough. Anna grabbed her own phone this time, and scrolled to her newest contact, "Better Than Billy". Heart thundering in her chest, she hit the call button.

The phone rang once, twice, three times. Anna held her breath, her heart pounding so loudly she was sure the mystery girl would be able to hear it through the speaker. Finally, on the fourth ring, the call connected.

"Hello?" the familiar voice answered, sounding slightly breathless, like maybe the girl had just gotten out of the pool.

"Um..." Anna bit her lip, suddenly nervous. She had been the one to call, so she couldn't just ask who she was talking to.

Luckily, Anna was smart and an idea quickly formed. "I...is this the girl who beat my brother...?"

"Depends. Is this Anna...?" the girl asked, her tone playful and teasing.

Anna's heart skipped a beat at the sound of her own name falling from the mystery girl's lips. So she DID know who Anna was! How did she know her name?! The realization sent a shiver down her spine, equal parts exciting and nerve-wracking.

Anna swallowed hard, her mouth suddenly dry. She had expected the girl to be shocked, maybe even angry that Anna had discovered their private conversation. But this reaction was throwing her off balance in the best possible way.

"Y-yes," she managed to squeak out, her voice barely above a whisper. "Billy tried to hide it, but I heard what happened. I snuck his phone away long enough to copy your number. Have we met?"

Anna sat up straighter on the bed, her free hand fisting in the sheets. She felt like she was standing on the edge of a cliff.

The girl on the other end of the line laughed, a warm, melodic sound that made Anna's skin prickle with goosebumps.

"Heh, yeah, we've definitely met before. Though I doubt you remember. We're both members of the feminist group in school."

So that was where Anna knew her from! The girl paused, and Anna could hear the smile in her voice as she continued, "My name's Carly. I know you, of course. The smartest girl in school, younger sister to strongest boy in school. The "undefeated" boxing champ..."

Anna's jaw dropped open in shock. Carly! Of course! That's why the girl looked so familiar. They had been in the same feminist club for months now, though they had never spoken beyond the occasional nod or smile.

"I... wow. I had no idea you were a boxer," Anna said, trying to wrap her mind around this revelation. "And that you've been beating Billy so thoroughly. That's amazing!"

Carly chuckled, the sound sending pleasant tingles through Anna's body. "Yeah, well, I prefer kickboxing. More versatile, ya know? I used to box in the same club as Billy, but most of the guys were too macho to want a girl around. It wasn't worth the headache of dealing with jerks like your brother. So I left, found a kickboxing instructor, and I've never felt better! That was why I came back. To put Billy in his place..."

There was a pause, and when Carly spoke again, her voice had taken on a softer, more intimate tone. "So, what can I do for you? I hope this isnt the call where you tell me to stop picking on poor widdle Biwwy~"

Anna shook her head vehemently, then remembered Carly couldn't see her. "No, no, nothing like that! Actually..." she hesitated, biting her lip. "I kind of enjoyed seeing Billy get taken down a peg. He's always been so arrogant, thinking he's the best..."

Emboldened by the admission, Anna continued, "In fact, he actually started training me and my mom a bit, but he got nervous when he saw we were such naturals. He doesn't want to do it anymore. I think he's scared~"

She wasn't prepared to give up that both she and her mom had KOd her older brother. That still felt shocking, even to her, so best not to make Carly question it.

"So when I found out that a girl had beat him, I had to ask: Would you be willing to teach me a bit...?"

Carly let out a low whistle, clearly impressed. "Damn, you girls really got under his skin, huh? Good for you! Guys like Billy need to learn that women can be just as strong. Or stronger!"

Her voice grew conspiratorial, and Anna could picture her leaning closer to the phone. "Tell you what. I've actually got a friend coming to train with me tomorrow. Why don't you join us? I've got a storage building behind my house that my parents repurposed into a home gym. 9AM?"

Anna's heart leapt at the invitation, a wide grin spreading across her face. "Really? You mean it? That sounds amazing!"

She glanced at the clock, disappointed she would have to wait so long, but excited at the prospect of training with a real fighter that had put Billy in his place. "I'll be there, no problem. Can't wait to learn from the best~"

With that, they hung up. Carly sent her the address a few seconds later, and the girl squealed.

Anna spent the rest of the day in a daze, replaying her conversation with Carly over and over in her mind. She could hardly believe her luck. First discovering Billy's secret losses, then connecting with the girl who had been dominating him, and now getting invited to train with her!

That evening, she made sure to sneak Billy's phone back into his room. As tempted as she was to hang onto it and cause more trouble, she knew doing so would risk her getting caught and ending her fun early. She now had a direct line to Carly, so the role-playing could wait for another day. She cleared out all her messages with her brother's better, though not before making sure she had a copy sent to her own phone. Then she made sure she could access his phone again before hiding the phone in Billy's bed.

Satisfied, she went downstairs to join her mother and brother, knowing that tomorrow couldn't come soon enough.