Shinpei was appointed one of the six accounting office judges under the Kami (director) of Edodhindai (the civil court in Edo) which was established by the new government after the dust of the Boshin War had settled, and he was responsible for government policy, accounting, finances and urban issues.
戊辰戦争が一段落した新政府が設置した江戸鎮台においては長官の下の6人の判事の1人として会計局判事に任命され、民政や会計、財政、都市問題などを担当する。