Yumiko lives with her husband and son. The college student's son seemed to be busy working part-time and was worried about his studies and health. One day, my son peeks at Yumiko doing vegetable masturbation in the kitchen. A son who erects in his mother's foolery. A few days later, Yumiko returned while taking a nap in the living room. She gets estrus when she sees her mother's pants, squeezes Ji Po next to her sleeping, and ejaculates as it is. Yumiko has noticed it. "Do that with a woman other than your mother," he says, but he is pushed down by saying, "I can't stand it anymore when I see my mother's erotic perverted masturbation!"