It is described that IeyasuTOKUGAWA became independent from the Imagawa clan after the Battle of Okehazama and took over Nishinokori-jo Castle (Also known as Kaminogo-jo Castle) of Nagamochi UDONO in Gamagori City using ninja during the war for regaining Mikawa Province.
徳川家康が桶狭間合戦後に今川氏から独立し、三河国奪還戦争のさなか、蒲郡市にある鵜殿長持の西之郡城（上ノ郷城）を忍で取る、と記載されている。