Iwakura Tomomi
After the Meiji Restoration, he was selected to join the Iwakura mission on its around-the-world voyage in 1871–73 as the private secretary to Iwakura Tomomi. In 1878 he published the "Tokumei Zenken Taishi Bei-O Kairan Jikki" ( 「特命全権大使米欧回覧実記」), a five-volume account of the journey, and of what he observed of the United States and Europe.