"Yojimbo" ("The Bodyguard"), Kurosawa Production's second film, centers on a masterless samurai, Sanjuro, who strolls into a 19th-century town ruled by two opposing violent factions and provokes them into destroying each other. The director used this work to play with many genre conventions, particularly the Western, while at the same time offering an unprecedentedly (for the Japanese screen) graphic portrayal of violence. Some commentators have seen the Sanjuro character in this film as a fantasy figure who magically reverses the historical triumph of the corrupt merchant class over the samurai class. Featuring Tatsuya Nakadai in his first major role in a Kurosawa movie, and with innovative photography by Kazuo Miyagawa (who shot "Rashomon") and Takao Saito, the film premiered in April 1961 and was a critically and commercially successful venture, earning more than any previous Kurosawa film. The movie and its blackly comic tone were also widely imitated abroad. Sergio Leone's "A Fistful of Dollars" was a virtual (unauthorized) scene-by-scene remake with Toho filing a lawsuit on Kurosawa's behalf and prevailing.