Political and economic relations between Korea and Japan are suspended completely following the war.
Ieyasu, the most powerful of the five regents, forges alliances with various daimyo, especially those who had no love for Hideyoshi.
With the death in 1599 of Toshiie, the oldest and most respected of the regents, Ieyasu leads an army to Fushimi and takes over Osaka Castle, the residence of Hideyori.
This angers the three remaining regents and plans are made on all sides for war.
Opposition to Ieyasu centers upon Ishida Mitsunari, a powerful daimyo but not one of the regents.
Ishida plots Ieyasu's death and news of this plot reached some of Ieyasu's generals.
They attempt to kill Ishida but he flees and gains protection from Ieyasu himself.
Although it is unclear why Ieyasu would protect a powerful enemy from his own men, Ieyasu, a master strategist, may have concluded that he would be better off with Ishida leading the enemy army rather than one of the regents, who would have more legitimacy.