Chika is a housewife who is dissatisfied with her husband whose sexual desire has declined. - Even though it's been a long time since we last had sex, he kept using toys, and even after penetration, it ended quickly, so he was feeling frustrated. - One day, Chika noticed that her son had an erection in his crotch while he was sleeping, and ever since then, Chika couldn't help but worry about it. - Even if you try to soothe your own lust with masturbation, it won't go away. - Finally feeling her limit, Chika takes off her sleeping son's pants and reaches for his hard, erect penis...