 In 1580 he was appointed to naidaijin, in 1585 sadaijin respectively.He held the position of sadaijin until 1591.In 1585 he got into troubles with kanpaku Nijō Akizane in relation to Toyotomi Hideyoshi and his planned appointment to sadaijin, the position Nobusuke held at the time of the dispute, today known as "kanpaku sōron" ().