He had achieved the trust of Siebold during his stay in Nagasaki for a little over six years; he became the first school manager of the newly established Narutakijuku (the School of Narutaki) together with Junzo MIMA.
長崎にいること6年余、シーボルトに信用され、美馬順三とともに鳴滝塾の最初の塾長となった。