Michitoshi, after achieving success as the governor of Kagoshima Prefecture, was promoted to councilor of Genroin (senate) and then to Commissioner of the Board of Audit, and in 1882, he was appointed governor of Okinawa Prefecture.
鹿児島県令としても治績を挙げた通俊は元老院議官・会計検査院長に昇り、明治15年（1882年）には沖縄県令となる。