Before that, Magoichi received an informal consent from Nobunaga and attacked the residence of the Dobashi clan at Awamura (Wakayama City at present), helped by Nobuharu ODA and his followers Izumi shu and Negoro shu.
孫一は事前に信長に連絡して内諾を受けており、織田信張とその配下の和泉衆・根来衆の応援を得て土橋氏の粟村（現和歌山市）の居館を攻めた。