There were five offices to which officers as a Higher Civilian like Arimatsu would be appointed; an executive civil officer, a diplomat, a consul, a judge or a public prosecutor. However Arimatsu wished to take an administrative post, he was so discouraged to be appointed in December 1888 to an assistant judge at local Mito court which performed the first trial of minor civil affair and criminal cases, The archive includes 316 articles, saved on microfiche or photographic records (Japanese): the original documents are kept at the University of Tokyo, School of Law. 109 letters including those received from Inoue Tsuyoshi, Hirata Tōsuke and others; drafts for Newspaper Law; documentation for Police System Maintenance (Keisatsu seido Seibi kankei shiryō); documents and references related to the establishment of administrative execution law (Gyōsei shikkō-hō seitei kankei shiryō); autobiographies; materials for biography that he resigned in less than one month (while his resignation was not accepted but taken into the custody of Minister for Justice and handled as a leave of absence from duty).
