Seppuku the concept to mainstream Western attention. It was staged by the young protagonist in the 1971 dark American comedy "Harold and Maude". In "The Last Samurai", a mortally-wounded Samurai leader Katsumoto performs seppuku with Former US Army Captain Nathan Algren's help. This is also depicted en masse in the movie "47 Ronin" starring Keanu Reeves when the 47 ronin are punished for disobeying the emperor's orders to avenge their master. The act of Harakiri is also explored in Puccini's opera "Madame Butterfly". The viral video "Ultimate Showdown of Ultimate Destiny" depicts Mr. Rogers performing seppuku at the end of the
Samurai Warriors 4 , a social spin-off game released on April 22, 2014 for the mobile phones also to commemorate the series' 10th anniversary. Koei Tecmo also collaborated with the Japanese Racing Association (JRA) to release on May 25, 2014 for the PC. "Derby Musou" reuses assets from "Samurai Warriors 4" to create a horse racing game, like that of the "Winning Post" series, with famous Japanese racehorses. Eight characters from "Samurai Warriors 4" make up the playable cast, plus Matthew C. Perry (known in-game as just Perry). The game received a revision, titled , which was released in Japan on February 11,