This role-play is performed by adults. A beautiful half-Japanese woman who lives across the street from the apartment I moved to in Tokyo is always changing clothes with the curtains open and having sex with her boyfriend in full view from outside. One day, when I got into the habit of looking into her obscene behavior, my girlfriend called out to me and called me to her room. She asked me to accompany her to practice sex, and she pushed me down and suddenly transformed into a slut...