Katsu Kanai, a pioneering figure in Japanese experimental cinema, has made a lasting impact on the world of physical media collection with his innovative approach to filmmaking. His early work, *The Deserted Archipelago* (1969), not only won the grand prix at the Nyon International Documentary Film Festival but also established Kanai as a vital voice in underground film. Collectors particularly seek out his films for their unique blend of surrealism and socio-political commentary, exemplified in *Good-Bye* (1971), which is noted as the first post-war Japanese feature filmed in Korea. This film challenges cultural narratives, making it a sought-after title for those interested in avant-garde cinema. Kanai's later works, such as *Holy Theater* (1998), continue to resonate with collectors for their experimental style and depth. His recognition by institutions like the Harvard Film Archive underscores his significance in film history, and the ongoing retrospectives of his work ensure that his films remain prominent in the physical media landscape. Collectors value Kanai's contributions not only for their artistic merit but also for their historical importance within the evolution of Japanese cinema.