Kōzō Uchida is a celebrated figure in the realm of Japanese cinema, particularly known for his influential contributions to the documentary genre. His most acclaimed work, *King of the Ring: The World of Glory* (1957), remains a cornerstone of film history, offering an intimate glimpse into the world of Japanese professional wrestling. This film not only captures the sport's cultural significance but also showcases Uchida's keen eye for storytelling, making it a must-have for collectors who appreciate the intersection of sports and cinema. Collectors are drawn to Uchida's meticulous craftsmanship and the historical context of his films. The rarity of *King of the Ring* in its original VHS and early DVD releases has made it a highly sought-after item, often fetching impressive prices at auction. Uchida's works, characterized by their authentic portrayal of Japanese life and culture, resonate deeply with enthusiasts of physical media who value the preservation of cinematic history. As such, his films are essential additions to any serious collector's library.