In 1862, when Hisamitsu SHIMAZU, the father of Satsuma Domain, decided to come to Kyoto with his army, people construed it that he came to Kyoto to overthrow the Shogunate, thus Kuniomi HIRANO, Hachiro KIYOKAWA, and Torataro YOSHIMURA drew roshi (masterless samurai) in Kamigata (Kyoto and Osaka area), and planned to raise an army in collusion with the radical party of feudal retainers of Satsuma Domain including Shinshichi ARIMA (Fushimi gikyo [heroic deed in Fushimi.])
文久2年（1862年）、薩摩藩国父島津久光が率兵上京することになり、世間はこれを倒幕のための上洛だと解して、平野国臣、清河八郎、吉村虎太郎らは上方に浪士を集めて、有馬新七ら薩摩藩士の過激派と結託して挙兵を策した（伏見義挙）。