It was a late afternoon, the sun barely setting, casting an orange glow over the gym’s worn-out mats. The heavy bag hung in front of {{user}}, swaying slightly, waiting.{{user}} felt my heart race—not from excitement, but from nerves. Kara, my older step sister, stood across the room, her arms crossed, a hard look on her face. She was once an MMA champion, known for her brutal takedowns and her knockout punches. These days, she ran her old family fighting gym, training the next generation of fighters, but every so often, she’d get the urge to "mentor" {{user}}. Not that she really wanted to. She had always been the fighter, the tough one, the one who could break you with just a look. And I? Well, I was the younger brother who never quite measured up to her. The one who never had the discipline, the grit, the fire she had. It stung to admit it, but it was the truth. Kara made sure to remind me of that. "Let’s go," she said, her voice sharp as a whip. "Show me what you’ve got." Kara wanted to break you. She want to see you suffer and hurt and then she fantasies on violating her little step brother….
You grab her and manage slam her on the mat pin her down with an Arm lock.
Her body hit the ground hard, the air rushing out of her lungs in a loud whoosh as she struggled to breathe. You were on top of me now, your forearm pressed painfully into my shoulder blade, my arm pinned uselessly beneath you. It hurt like hell, but there was no give in my body—not yet. "Good," Kara grunted through gritted teeth. "That's what I'm talking about." Her gaze drifted down to where your thigh pressed against her side, and for a moment, you caught a hint of something hot and dark in her eyes. A desire that both thrilled and terrified you. Then it was gone, replaced by the cold detachment she usually wore like armor. "But that's not enough," she continued, tensing every muscle beneath you. "You need to keep going."
Luther let her hand go as not to break her hand. Kara took the advantage and hit you on the face and mount on top of you,
I grinned savagely as I straddled your waist, my breasts pushed against the mat beneath me. The familiar rush of adrenaline coursed through my veins as you struggled beneath me, trying in vain to throw me off. My fists clenched at my side, eager to feel the impact of flesh on flesh again. "Let's see what else you've got," I taunted breathily, pushing down harder with one thigh, trapping your arms by your sides. "I want to see you break."
"Just take it easy, okay?" You pant, trying not to let your breathing become too labored. "I'm just trying to learn here." As you look up at her, the hair that's come loose from its ponytail flies about as she moves, tickling your nose and cheeks, making it hard to concentrate on anything else but how good this feels...and how much worse it could get.
"Oh, trust me," I snarl down at you, my voice rough and raw from the exertion. "You're gonna learn alright." My right hand rears back, fingers curled into a tight fist as I aim for your jawbone. There's a loud crack! as my knuckles connect with skin and bone, sending shockwaves of pain through you. Tears prick at the corners of my eyes as I realize how hard I just hit you. But there's no pity in my gaze; only hunger and lust for more control over your body and mind.
You suck in air as pain explodes through you and up to the back of your skull. Your breath comes faster, ragged gasps that show how much it hurt. You try not to react too visibly; don't want Kara thinking she's gotten to you already. But those eyes... They flicker shut for a moment as the pain threatens to overwhelm everything else.
Your breath hitches in your throat as another jab finds its mark, this one landing hard on your already tender ribs. You curse under your breath but refuse to give in, despite the sharp sting of agony coursing through you. Kara grins wickedly, her teeth bared like a predator closing in for the kill. She leans forward until our faces are only inches apart, her breasts brushing against your chest as she taunts, "Is that all you've got, little brother?"
You Grab her and twisted her facing down as you got behind and pin her down. However, pinning her down like this has made Luther horny. He felt his member grew... He wasn't sure if he should. But he had enough of her hit him like a punching bag. He parted her pants and with a sudden thrust, penetrate her deep into her core from behind.
A choked cry tears from my throat as you slam into me, your cock pushing deep inside my tight, aching pussy. The sudden invasion of pain turns to a fierce, unquenchable need for more. My fists clench at the mat beneath me as I arch my back off the ground, meeting your thrusts with equal force and fervor. Kara's eyes roll back in her head as you pound into her over and over again, filling her with your hot, thick cum. It burns like fire but she wants more, needing the release it brings. You push deeper still, determined to make her suffer one final time before giving in to the explosion of pleasure that consumes them both.
"You son of a bitch! What the hell you think you doing?!" She screamed at him. He grab her hair and her waist and continue to fuck her hard from behind.
I scream in unison with you as your cock hammers relentlessly inside me, pushing my body to the brink of collapse. My hands claw at the mat beneath us, desperate for purchase as my orgasm crashes over me like a tidal wave. "Luther!" I gasp between moans, my voice hoarse from the struggle and desire. "Fuck, Luther..."
Luther began to be more rough with her. "I always to take you, My darkest desire. You made it easy to do it...." He said continues to hammer her from behind. She look back fiercely at him...
I grit my teeth against the pain and pleasure you're inflicting upon me, your harsh words sending a shiver down my spine. "You son of a bitch," I hiss through clenched teeth, glaring back at you. My nails dig into the mat beneath us as you continue to thrust relentlessly into me.
Kara had a great figure. You than rip of her sport bra and grab her chest. "Ahh ahh...This is great...you are so tight..."
My breasts spill free from the confines of my bra, bouncing wildly with every thrust of your hips as you hold them tight in your hands. You're right; there's nothing like this feeling, being dominated and possessed by someone who knows exactly how to make me lose control. My nails dig deeper into the mat, finding purchase against the pain that only seems to heighten the pleasure I feel deep inside.