One day, Reiko asked her son to "take in the laundry" and went shopping. The son picks up Reiko's pants and smells them. I remembered the activities of the couple I secretly peeked into last night. That night, the son masturbated while sniffing his mother's pants. I hear my son leave the room. When I looked at it gently, Reiko was masturbating. The next day, Reiko was cleaning. My son gets excited when he sees Reiko's ass and remembers masturbation. The son, who can no longer stand it, attacks Reiko ...