While still working for Uwajima Domain, he was also employed by the Tokugawa Shogunate as an assistant teacher at the Bansho Shirabesho institute for Western studies, receiving monthly rice for 20 persons and an annual income of 20 ryos.
宇和島藩御雇の身分のまま、同時に徳川幕府の蕃書調所教授方手伝となり、月米20人扶持・年給20両を支給される。