1486年：Assassination of Ōta Dōkan and Renewed Instability in Kantō - 戰國大名 勢力地圖
Ōta Dōkan, chief retainer of the Ōgigayatsu Uesugi, was killed by his lord Uesugi Sadamasa, accelerating rivalry between the Ōgigayatsu and Yamanouchi branches.
當年的主要事件
- 1486-07-26: Assassination of Ōta Dōkan — Ōta Dōkan was killed at Kasuya residence on the orders of his lord Uesugi Sadamasa.