A documentary film on Japan's tumultuous postwar history since signing the 1960 security treaty with the United States will be released next month, featuring the works and first-person accounts of artists and writers reflecting on the era.

Director Linda Hoaglund, a Japan-born American who describes the bilateral ties under the treaty as unnatural, said she will be happy if her film, "Anpo," can offer people who watch it "a chance to think about what kind of future they want to build."

It is the first film directed by Hoaglund, who over the years has handled English subtitles for about 200 films, including those directed by Akira Kurosawa and Hayao Miyazaki.