He was away from Tokyo and working at a school in Shizuoka for a while, but because the new government recognized his outstanding language abilities, he was appointed to Benmu-Shoki in the Ministry of Foreign Affairs and went to the US.
一時東京を離れて静岡で学問所に努めていたが、抜群の語学力を新政府に認められ、1870年（明治3年）、外務省弁務少記に任ぜられ渡米。