In April 1611, he exercised his good offices by mediating a meeting between Ieyasu and Hideyori TOYOTOMI in Nijo-jo Castle, however, he became ill on the ship on his way back home and died on August 2, 1611 in Kumamoto.
慶長16年（1611年）3月には二条城における家康と豊臣秀頼との会見を取り持つなど和解を斡旋したが、帰国途中の船内で発病し、6月24日に熊本で死去した。