One day, the man, who was barely able to contain his urges due to his little sister becoming increasingly attractive, decided to finally act on his impulses. His parents were not home, so he called his sister, seducing her for sex. She hesitantly complied, submitting to his advances as he undressed and pleasured her, assuring her that no one would ever find out. Despite her discomfort, the girl eventually found herself in a state of bliss, cumming for the first time. An unforgettable experience for them both!