temples in Koya-san Mountain and others. Yodo-dono then moved to Osaka Castle with her son Hideyori and plotted the restoration of the Toyotomi clan. She intervened in politics as Hideyori's guardian and became the de facto head of Osaka Castle. Struggles against Tokugawa Clan Sekigahara Campaign (1600) After the death of Hideyoshi in 1598, Hideyori became the successor of Hideyoshi and Chacha became the mother of paramount. But Hideyori still was a child and could not manage the retainer, and conflict of front generals and administrative staff became serious. Tokugawa Ieyasu who was the largest lord under Toyotomi government aimed at next hegemony, stirred up the conflict of both party and supported front generals. Ishida Mitsunari (1560-1600), the chief administrative staff of Toyotomi government, raised his army to stop the ambition of Ieyasu, but was defeated at the Battle of Sekigahara and was executed. After the defeat of the Western Army, the Toyotomi clan lost much of its sovereignty, even though Yodo-dono did not actively participate in the Battle of Sekigahara it is said that more than 2,000 Toyotomi vassals participated in the battle and relations between Tokugawa-Toyotomi declined. Ieyasu distributes the Toyotomi family area as a prize for the Sekigahara, and the Toyotomi family will have less control. As Hideyori's guardian, Yodo-dono has the leadership of Osaka Castle, after Ieyasu ends the Council of Five elders. After the Battle of Sekigahara, she confronted Ieyasu who started to construct a military government in Edo, and refused his requirement for Hideyori to show his vassalage and go to the capital, Kyoto City. Formation of the Tokugawa Shogunate In 1603, Tokugawa Ieyasu was named as Shogun by the emperor, Yodo-dono began to actively resist the Tokugawa. Hideyori still kept Osaka castle and married with Princess Senhime, the daughter of Tokugawa Hidetada who was the son of Ieyasu, there was no room for two rulers. Even though having secured the Osaka castle and inherited huge amount of property from Hideyoshi, former retainers of Hideyori now supported Edo Shogunate and Hideyori’s position became quite weak. But Yodo-dono was proud of her blood, and also her status as a mother of paramount. It is said that at first Ieyasu tried to conciliate Yodo-dono and Hideyori to become subordinates to Ieyasu, but she declined. In 1611, Hideyori finally left Osaka, meeting with Ieyasu for two hours at Nijō Castle. Ieyasu was surprised by Hideyori's behavior, contrary