My sister is crazy and fucks me hard

This man cannot believe that his sister is so crazy, despite being brothers and having grown up together, the girl since she is a teenager flirts with him whenever they are alone. The boy is quite uncomfortable and wants to talk to his parents, but he knows they won't believe him. One afternoon the boy is watching pornography in his room to masturbate a little and pass the time, and suddenly his sister arrives without warning and sits next to him to watch the whole movie. They are both very excited and this time the boy cannot help but fall for his sister's seductions and ends up fucking her harder than he would have liked. His sister groans non-stop and tells him that this is the best sex of her life.