Kotoba de nureru hitozumatachi

A married woman who is dissatisfied with sex with her husband. And Sayuri, a divorcee who has never felt deep ecstasy, although she can only feel it like other people. At the "classic reading club" that the two of them attend, Katsumata, a university lecturer, introduces Ehon (picture books) and erotic poems (baraku), which are known as pornography from the Edo period. What will happen to the married women who are inspired by glossy books and glossy poems and become lewd?