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
Samurai Warriors 4 death that leads to the Battle of Sekigahara and the extermination of the Toyotomi clan; and the "Sanada" story, which tells a parallel story with Unification but has a more personal insight with the Sanada clan. Musou Attacks now have new finishing animations separate from their Ultimate Musou, but they no longer allow free-action for their durations. Enemy generals still use the older shockwave finishers, and are no longer fully invincible for their durations (they instead are granted Hyper Armor). Like previous games in the series, the setting and story of "Samurai Warriors 4" is centered on the Sengoku period