NEWM-059 Having a relationship with the stepmother while the father is away

One day, Reiko asked her son to 'get the laundry' and go shopping. My son picked up Reiko's pants and smelled them. I remembered the couple's activities that I had secretly witnessed the night before. That night, my son smelled his mother's panties and masturbated. I heard a voice as my son left the room. When I looked at him gently, Reiko was masturbating. The next day, Reiko was cleaning up. My son was excited to see Reiko's butt and recalled masturbating. Unable to stand it any longer, my son attacked Reiko...