"Don't tell anyone about playing with big brother," I whispered while pulling back the foreskin of my erect cock. At that moment, I was having my little sister suck my dick. My fingers trace over her pussy, still covered by her childish printed panties. She squirms—whether from ticklishness or embarrassment, I can't tell—her body writhing slightly. My heart races, unable to contain my own desire. And so, our forbidden bond grows even deeper...