Kyoko lives with her husband and son. Recently, her son has been going through a rebellious phase and has been especially rebellious towards his father. Kyoko, who loves both her husband and son equally, was worried and wondered, "What's wrong?" One day, Kyoko and her husband had sex for the first time in a long time. Even after going through menopause, her sensitivity is outstanding and she lets out moans. She doesn't know that her son is watching her... The next day, while Kyoko is masturbating, remembering their sex, her son comes home. Excited by seeing his mother masturbating, her son attacks Kyoko! Although she resists, her body burns up when he rubs her ripe G-cup breasts...