I was a virgin, and there was someone I had truly loved from the bottom of my heart. Obsessed with the thought of kissing her, I eagerly looked forward to each passing day. One day, my sister came home to find her husband causing trouble again—their marriage had always been rocky. In that moment, she suddenly said, "Teach me how to kiss." Caught off guard but unable to resist her brother's advances, she agreed to practice. Gradually growing curious, the brother gave in to his uncontrollable desire, ultimately experiencing his first real sex with his sister—bareback.