Reina saw her son masturbating. From that day on, her relationship with her son became strained, but she couldn't consult with her husband. One day, after her husband went out, she called out to her son. She asked him to make up, but her son troubled Reina by saying, "Show me your embarrassing parts." With determination, Reina began to masturbate in front of her son. It's embarrassing, but her crotch gradually gets wet. Her son couldn't stand it anymore and pushed Reina down. From then on, their relationship deepened…