Living in a slum damaged by the atomic bomb and watching elderly first-generation zainichi hibakusha (atomic bomb survivors) pass away one after another, Pak felt compelled to break their silence with this documentary, her first. Using up all her savings and going into debt, she teamed up with cinematographer Otsu Koshiro and collected these testimonials from zainichi North and South Koreans living in Hiroshima and South Korean hibakusha visiting Japan for medical treatment.