Premise: Mulberry () is a 1986 South Korean drama film directed by Lee Doo-yong. Based on the eponymous classic story by Na Do-hyang, the film became known for its erotic subject matter, made possible by the government's gradual relaxation of censorship and control over the film industry during the 1980s. It was part of the wave of "Folk erotic" films that had become popular in South Korea at this time.
Hypothesis: Mulberry was part of a wave