NEWM-059 Having sex with stepmother while father is away

One day, Reiko asked her son to "pick up the laundry" and go shopping. My son picked up Reiko's pants and smelled them. I remembered the work of the couple I had secretly seen last night. That night, my son sniffed my mother's panties and masturbated. I heard a voice as my son left the room. When I looked at it gently, Reiko was masturbating. The next day, Reiko is cleaning. My son got excited when he saw Reiko's butt and remembered masturbating. My son, unable to bear it any longer, attacked Reiko...