One day, when I visited my girlfriend's house, I met her younger sister, Sora! She whispered in my ear, "All my sister's boyfriends end up falling for me," and immediately took my penis firmly into her hand. Sora has strict rules—three of them. First, no sex with my girlfriend. Second, no masturbation except in front of her. Third, this secret stays between just the two of us. Sora, a master of ejaculation control, begins a 30-day cum management regimen, whispering filthy words in my ear the entire time. *Headphones or earphones are an essential item for this experience.