Because the office of the Nirayama magistrate was strongly concerned about the threat, they built Odaiba off the coast of Shinagawa and organized Hikogoro SATO in areas such as the Tama district.
韮山代官所は危機感を強め、品川沖にお台場を建設し、多摩郡などで佐藤彦五郎を編成した。