
When Ieyasu denounced the inscription "Kokka Ankō, Kunshin Hōraku" cast on the great bell of the Hōkō-ji, rebuilt by Hideyori, as a curse against the Tokugawa house, the Tokugawa side pressed the Toyotomi to accept relocation or surrender hostages. Negotiations broke down, and Ieyasu led a massive army to surround Ōsaka Castle, opening the Winter Siege of Ōsaka.
1/17
Due to Tokugawa Ieyasu's anti-Christian policy, Takayama Ukon was exiled from Japan and left Kanazawa. He subsequently died in Manila.
Month 11
A large Tokugawa army surrounded Osaka Castle, while the Toyotomi side conducted a defensive siege centered on positions including Sanada Nobushige's Sanada-maru.
See this battle in detail →Sources 国立公文書館「大坂冬の陣・夏の陣」
12/19
A truce was agreed between the Tokugawa and Toyotomi sides, followed by an exchange of pledges, but the conflict remained unresolved and resumed the following year.
See this battle in detail →Sources 国立公文書館「大坂冬の陣・夏の陣」