47 Ronin is a 2013 American historical fantasy action film directed by Carl Rinsch in his directorial debut. Written by Chris Morgan and Hossein Amini from a story conceived by Morgan and Walter Hamada, the film is a work of Chūshingura ("The Treasury of Loyal Retainers"); a fictionalized account of the forty-seven rōnin, a real-life group of masterless samurai under daimyō Asano Naganori in 18th-century Japan who avenged Naganori's death by battling his rival Kira Yoshinaka. Starring Keanu Reeves, Hiroyuki Sanada, Tadanobu Asano, Rinko Kikuchi and Ko Shibasaki, the film bears little resemblance to its historical basis compared to previous adaptations, and instead serves as a stylized interpretation set "in a world of witches and giants."Produced by H2F Entertainment, Mid Atlantic Films, Moving Picture Company, Stuber Productions and Relativity Media, 47 Ronin premiered in Japan on December 6, 2013 before being released theatrically in the United States on December 25, 2013 by Universal Pictures in both 3D and 2D formats. Upon its release, 47 Ronin received generally negative reviews from critics and grossed $151 million against its total production budget of $175–225 million, becoming a box office bomb and leaving Universal in the red for 2013. Variety listed 47 Ronin as one of "Hollywood's biggest box office bombs of 2013".A standalone sequel, Blade of the 47 Ronin, was released on October 25, 2022 on Netflix.