Yumiko is a lewd wife who does not stop increasing libido with age and is not enough to work with her husband.Despite this, a major incident occurred in which her husband became an impotent.Yumiko, who is in an emergency, encounters her son, Katsu, who has reached puberty, and she can't stand it and jumps.However, Masaru ejaculates in his mature body in no time.Yumiko is completely unsatisfactory and gets a strong erection with a cleaning fellatio and is forced to insert it into her pussy again.