While taking such powerful local clans as the Toda clan and the Saigo clan in the eastern Mikawa onto his side, he moved his troops towards the east, eliminating enemy forces, such as the Udono clan.
東三河の戸田氏や西郷氏といった土豪を抱き込みながらも、軍勢を東へ進めて鵜殿氏のような敵対勢力を排除していった。