Samurai cinema be skilled in warfare and martial arts and ready to defend his honor even to his death. If not able to defend his honor, a samurai may choose to commit self-disembowelment, seppuku, in order to save reputation or "face". Instead, a samurai may exact vengeance in a case of the loss of someone the samurai cared about, such as occurs in the film Harakiri. In Harakiri, Hanshiro Tsugumo takes revenge on the house of Kageyu Saito for the loss of his adopted son-in-law, who was forced to commit suicide by the house of Kageyu Saito. The house of Kageyu Saito
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,