He made efforts to have the Emperor Meiji issue the secret Imperial command of attacking the shogunate, which was an Imperial command to attack seii taishogun (literally, "great general who subdues the barbarians") Yoshinobu TOKUGAWA in 1867 with Tsuneyuki NAKAMIKADO and Sanenaru OGIMACHISANJO.
慶応3年（1867年）、中御門経之・正親町三条実愛らと組み、征夷大将軍徳川慶喜追討の勅書である討幕の密勅を明治天皇から出させることにも尽力。