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
Battle of Nagashino and ignored aid to the latter. The Battle of Nagashino is a significant part of many PlayStation 2 games, predominantly Koei's "Kessen III" and "Samurai Warriors". If Shingen is the playable character in "Samurai Warriors", there is a 'what-if' situation which examines what would have happened if he had not died: Shingen successfully reads the feint, and does not charge. It then starts raining, rendering the arquebuses worthless except as clubs. Only then would the Takeda cavalry charge, completely routing the Oda–Tokugawa combined forces. Likewise, this can be done in Uesugi Kenshin's Story in "Samurai Warriors 2" where due to