Heat Wave Island (1969)

Heat Wave Island 1969 / かげろう 1969 / Kagerou

Otowa is a former Seto Inland Sea island farmer who has moved to the mainland in order to find work, but instead ends up dead. The film begins with the discovery of her corpse, which leads to an investigation that uncovers the narcotics, prostitution, and murder in which many poor farmers had found themselves trapped after World War II. ( Wikipedia)