My sister came back home while my parents were away on vacation. She teased me with her perky nipples poking out of her shirt and her exposed body when she changed clothes. Then she invited me to take a bath together! As we soaped each other up, I couldn't help but get hard. She even gently stroked my dick. Her huge tits felt amazing as they smothered my cock during a passionate sixty-nine session. When she ground her wet pussy against my throbbing balls, I knew I couldn't hold back anymore... We crossed the boundaries of siblinghood and had rough, unprotected sex. Moments later, I erupted inside her tight pussy, filling her up with hot cum. It was too much for both of us; our bodies shook with pleasure as we continued fucking in secret. Our love nest became a place where we could escape reality and indulge in our desires without anyone knowing.