Tetsu Kayama, born August 8, 1975, in Kanagawa Prefecture, is a renowned Japanese actor whose career has captivated collectors of physical media, particularly since his name change from Tetsuo Yamashita in 2019. Kayama's standout performance in "Cyborg Tasuke Isshin" (2025) has positioned him as a significant figure in contemporary Japanese cinema. This film, blending action and sci-fi elements, has garnered a cult following and is a sought-after title among fans of the genre. Collectors appreciate Kayama not only for his dynamic performances but also for the rarity of his early works and the unique releases that often accompany his films. His affiliation with Office Joe Shishido has further solidified his status, as many of his films are celebrated for their distinctive style and storytelling. As home video releases of his films continue to gain traction, Tetsu Kayama remains a name to watch for any serious collector of Japanese cinema.