In August 1331, Emperor Godaigo raised an army on Mt. Kasagi (in the present Kyoto Prefecture), and Masashige KUSUNOKI collaterally raised his army in Kawachi Province, which was the start of the Genko War.
1331年（元弘元年、元徳3年）8月、後醍醐天皇が笠置山(京都府)で挙兵、これに応じて楠木正成も河内で挙兵して、元弘の乱が始まる。