On May 26 (Keichō 20, 29th day of 4th month) at the Battle of Kashii Osaka forces under the command of Ono Harufusa and Ban Danemon engaged with forces of Asano Nagaakira, an ally of the Shogun.
On June 2 (Keichō 20, 6th day of 5th month), the battle of Dōmyōji took place.