One day, I found a sex video from an Amateur posting site. Nogi-san, a plain and dull office lady in my department, was showing a very vulgar side of herself that she normally doesn't show. "Hey, Nogi-san. This is you, right?" From that day on, Nogi-san became my sex slave. When I got bored with overtime, I did whatever I wanted with her, like making her give me a blow job, opening her pussy, or shoving my dick in and making her moan. She was supposed to be my personal masturbation pet... but I had no idea that everyone knew about it...