Everyone was soaked through, their underwear barely visible beneath their uniforms! A sudden downpour started after school, and the stepsister and her friend, seeking shelter, were so drenched that they couldn't take their eyes off the underwear and got erections! HUNTB-699

My stepsister, who came from my parents' remarriage, is a lovely and honest girl with many friends. However, her friends are incredibly promiscuous; it's unbelievable they're the same age… One day, as I was contemplating these indecent things, my stepsister, soaked to the bone, came to seek shelter from the rain on her way home from school! Seeing this aroused me! Perhaps she's grown up, but she noticed my erection and started teasing me. I couldn't take it anymore! I blurted out my long-hidden desires!