Nanohana no Oki (2001)

Original title: 菜の花の沖

A romance of a man who risked his life at sea on a Kitamae ship during the Edo period. Based on the famous book "Offshore of Rape Blossoms" by Ryotaro Shiba, the movie tells the story of Kahei Takadaya, a great merchant who lived a turbulent life and single-handedly conducted diplomacy with the great Russian power.