Seppuku the head could, both metaphorically and literally, rest in its owner's hands. Those who did not belong to the samurai caste were never ordered or expected to carry out seppuku. Samurai generally could carry out the act only with permission. Sometimes a "daimyō" was called upon to perform seppuku as the basis of a peace agreement. This weakened the defeated clan so that resistance effectively ceased. Toyotomi Hideyoshi used an enemy's suicide in this way on several occasions, the most dramatic of which effectively ended a dynasty of "daimyōs". When the Hōjō were defeated at Odawara in 1590, Hideyoshi insisted
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