In September 1872 Heinai became a "daisakan" (another lower-level official), in October 1873 a "nanato" (higher than hatto) to the Hokkaido Development Commission and in August 8, 1875, he became Development executive.
1872年8月(旧暦)に開拓使大主典、1873年10月に七等出仕となり、1875年8月8日に開拓幹事。