Red Sun is a film in the western genre with an international flavor. It starred the U.S.-born Charles Bronson, the Japanese actor Toshirō Mifune, the French actor Alain Delon and the Swiss actress Ursula Andress. It was filmed in Spain by the British director Terence Young. It was released in Europe in 1971 and in the U.S. in 1972.
The plot revolved around the attempts, by Mifune's and Bronson's characters, to regain a ceremonial samurai sword which is stolen by Delon's bandits at the beginning of the film. This film introduced the traditional ways of the samurai to some in the western audience.
The casting of Mifune and Bronson meant that one of the Seven Samurai and one of The Magnificent Seven were acting together on screen.