Later, he served Ieyasu TOKUGAWA and played an active role in the Battle of Nagashino and the Battle of the Takatenjin-jo Castle together with Masakazu NARUSE (Sengoku Busho [Japanese military commander in the Sengoku Period])
後に徳川家康に仕官し、成瀬正一(戦国武将)と共に長篠の戦い、高天神城の戦いで活躍する。