However, as the West squad lost in the Battle of Sekigahara, he was deprived of his territory and became a masterless samurai, and he was employed by Ieyasu TOKUGAWA in 1606, then served the Tokugawa clan.
しかし、関ヶ原で西軍が敗れたために所領を没収されて浪人し、1606年になって徳川家康に召抱えられて徳川氏に仕える。