Chika, a housewife who is dissatisfied with her husband whose sexual desire has declined. Even though it was sex for the first time in a long time, I used only toys, and even if I inserted it, it ended immediately, so I was frustrated. One day, Chika noticed that her son's crotch was erected while he was sleeping, and since then he has been worried about it. Even if I try to comfort my lust with masturbation, it does not heal easily. At last, Chika feels the limit, takes off her sleeping son's pants, and reaches for Chi-Po, who is warped and erected.