Seppuku severed by Hiroyasu Koga, a former kendo champion. Morita then attempted to perform seppuku himself, and when his own cuts were too shallow to be fatal, he gave the signal and he too was beheaded by Koga. This list of notable seppuku cases is in chronological order. The expected honor-suicide of the samurai wife is frequently referenced in Japanese literature and film, such as in "Taiko" by Eiji Yoshikawa, "Humanity and Paper Balloons", and "Rashomon". Seppuku is also referenced and described multiple times in the 1975 James Clavell novel, "Shōgun"; its subsequent the 1980 miniseries "Shōgun" brought the term and
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,