Hanabusa, who studied at Tekijuku, a private school set up by Koan OGATA, went to the European countries and the United States for studying in 1867 and returned to Japan next year.
緒方洪庵の適塾で学び、1867年にヨーロッパ諸国やアメリカ合衆国に遊学し翌年帰国。