SONE-951 I played around with my childhood friend and tried some SM play... She woke up to her masochistic side and became a submissive, lustful, erotic masochist pet. Ruka Itoi

Ruka and I have been childhood friends. We may be practically family now. And yet, I wonder why. Lately, I've been overcome by a strange feeling. "I want to destroy Ruka." I wonder if it's the influence of an adult video I watched recently. I don't know what's causing this feeling. The next thing I knew, I was saying strange things. "Do you want to try some pretend S&M play?" Ruka was hesitant, but went along with it. And so we became master and slave. At first, it was just a casual thing. Just a trial. I never thought it would turn out like this. I never thought I would destroy Ruka. I never thought she would become a masochistic pet, shaking her legs obscenely and begging to be trained.