Hideyoshi TOYOTOMI established a council system of Gotairo to support his son Hideyori in case of his death, expecting the five members to balance each other to prevent the possible emergence of Ieyasu TOKUGAWA.
豊臣秀吉は己の死後、その息子・豊臣秀頼を五大老が補佐し、合議制をとることにより徳川家康の台頭を防ごうと考えていた。