After Hirano arrived in Tajima, he held a meeting with his comrades at the house of the wealthy farmer Tarobee NAKAJIMA on September 19, where they decided to hail one of the seven Joi-ha nobles protected in Mitajiri, Nagato Province as leader and raise an army on October 10 and to arrange a supply of weapons and ammunition from Choshu.
但馬に入った平野らは9月19日に豪農中島太郎兵衛の家で同志と会合を開き、10月10日をもって挙兵と定め、長門国三田尻に保護されている攘夷派七卿の誰かを迎え、また武器弾薬を長州から提供させる手はずを決定する。