My little sister

I couldn't believe what I was seeing. It was lunch period, and I'd gone looking for Mia after hearing whispers about some bullshit going down in the locker room hallway. There she was, my petite little sister—barely 5'2" with those huge, natural tits that strained against her school blouse—cornered by three asshole jocks from the football team. They were laughing, phones out, as they shoved her against the lockers.

'Come on, Mia, flash those fat udders for us,' one of them sneered, the biggest one, Jake, grabbing her backpack strap to hold her in place. She looked terrified, her big blue eyes wide, shaking her head frantically. 'No, please... stop it. Let me go.' Her voice was small, pleading, that kindness of hers making her too nice to fight back hard, but she was twisting away, arms crossed over her chest.

The other two, Derek and Chris, crowded in, one yanking at her skirt while the other pawed at her blouse buttons. 'Upskirt time, slut. Show us that tight pussy.' Derek flipped her skirt up, exposing her white panties, and she screamed, slapping at his hand. 'Don't! Get off me!' But they just laughed harder, forcing her legs apart as she kicked weakly. Chris ripped open her blouse, two buttons popping, and her massive breasts spilled out in her lacy bra—perky despite their size, nipples poking through from the cold air or fear.

I saw red. Charging in, I tackled Jake first, my fist connecting with his jaw. 'Back the fuck off my sister!' The fight was quick and brutal—I was pissed, landing punches on all three until they scattered, bloody and cursing, dropping their phones. Mia collapsed against the wall, sobbing, pulling her clothes back together. Her face was flushed, tears streaming, but she looked at me with gratitude. 'Alex... thank you. They wouldn't stop.' I hugged her tight, feeling her tremble, those soft tits pressing into me accidentally. Something stirred in me, wrong as it was, but I shoved it down. For now.

Taking Her Home

The rest of the day dragged, but I couldn't focus. Mia stuck close to me after that, quieter than usual. When the bell rang, I grabbed her hand. 'Come on, I'm driving you home early.' She nodded, still shaky, clutching her bag like a shield. In the car, she stared out the window, skirt riding up her thighs unintentionally. I kept glancing, my cock twitching at the sight of her vulnerability.

At home, Mom and Dad were out, thank fuck. Mia headed to the living room couch, curling up. 'I just want to forget it,' she murmured. But I sat beside her, too close. 'Those pricks won't touch you again.' My hand landed on her knee, meant to comfort, but she flinched. 'Alex, what are you—' I cut her off, leaning in, my lips crashing against hers. She pushed back, hands on my chest. 'No, bro! Stop, this is wrong!' But her resistance only fueled me—her kindness making her hesitate, giving me an opening.

I pinned her wrists above her head with one hand, the other shoving up her skirt. 'You've been teasing everyone with these tits. Now it's my turn.' She whimpered, twisting. 'Please, don't... I'm your sister!' I yanked her blouse open fully, bra following, those glorious breasts bouncing free—heavy, round, nipples hardening against her will. I sucked one hard, biting the peak, while my fingers tore her panties aside, finding her pussy dry at first, but I rubbed roughly until she gasped, a traitorous wetness starting.

'Alex, no! Let me go!' She bucked, but I held firm, unzipping my jeans and pulling out my hard cock. Forcing her legs apart, I rubbed the head along her slit. 'You're mine now.' With a thrust, I buried inside her tight heat. She cried out, body arching in pain and protest, nails scratching my arms. I pounded relentlessly, her walls clenching unwillingly around me, tits jiggling with each slam. 'Stop... it hurts!' But her cries mixed with involuntary moans as I hit deep, grinding her clit.

I flipped her over, ass up, spanking those cheeks red while reaming her from behind. She sobbed into the cushions, but her hips jerked back slightly—body betraying her. 'Cum for me, sis,' I growled, reaching around to pinch her clit. She shattered despite herself, pussy spasming, milking my load as I flooded her. Pulling out, cum dripping from her abused hole, I forced her to turn, shoving my slick dick into her mouth. 'Clean it.' She gagged, tears flowing, but sucked reluctantly until I softened.

She curled away after, whispering, 'Why did you do that?' I just held her, ignoring the guilt. She was mine to protect—and use.