After a coup erupted in Mino in 1556, he assisted Dosan, the father-in-law of Nobunaga, and participated in the Battle of Inou between Nobunaga and his younger brother Nobuyuki ODA over the succession of the family.
弘治(日本)2年（1556年）に美濃で政変が起こると、信長の舅にあたる道三を援助し、信長とその弟・織田信行の家督争いである稲生の戦いにも参陣した。