As she gets older, her libido keeps increasing, and Mayu falls into extreme frustration. Her husband is always working and doesn't pay her any attention. Just when her frustration reaches its peak...her son's erect cock appears before her. Mayu pounces on his rock hard cock. However, her son, who has little sexual experience, cannot withstand the pleasure of her ripe vagina and ejaculates instantly. Unsatisfied, Mayu starts a clean-up blowjob to get him hard again.