“Nana, today I’m tying your hands, and you’re playing my slave.” My adult childhood friend Nana is cute, innocent, and almost like a younger sister to me. I never used to feel anything even when I saw her panties, but lately I have been overwhelmed by the urge to dominate her and make her beg her master for mercy. We begin fooling around with light SM as a joke, only to spiral into genuinely intense BDSM sex. The innocent woman discovers her masochistic side and becomes an obedient, hypersensitive submissive.