Manami (Fujisaki), who became Morio's second wife because the conditions were good, couldn't help but worry about her stepchild Kosuke. Manami, who has always loved young men, plots to seduce Kousuke in every way possible to get him to turn around. One day, while thinking about Kousuke, Manami indulges in masturbation. From that day onwards, the lewd acts towards Kousuke escalate, and finally...
