Seppuku to prefer Chinese readings in official announcements, only the term seppuku was ever used in writing. So hara-kiri is a spoken term, but only to commoners and seppuku a written term, but spoken amongst higher classes for the same act. The practice of performing seppuku at the death of one's master, known as oibara (追腹 or 追い腹, the kun'yomi or Japanese reading) or tsuifuku (追腹, the on'yomi or Chinese reading), follows a similar ritual. The word means "suicide" in Japanese. The modern word for suicide is . In some popular western texts, such as martial arts magazines, the term is
Dynasty Warriors of Koei, "Samurai Warriors" ("Sengoku Musou" in Japan) series, was introduced in 2004. Instead of the Three Kingdoms era, the series uses Japan's Sengoku period. As a result, the game's roster consists of characters from that era, while having gameplay similar to that of Dynasty Warriors. The game would be followed by "Samurai Warriors 2" in 2006, "Samurai Warriors 3" in 2009, and "Samurai Warriors 4" in 2014 as well as numerous other spin-off titles. As with the original series, "Samurai Warriors" also has the "Xtreme Legends" and "Empires" expansions, with the former beginning on the first game and the