It is said that Ryoma together with his elder sister Otome rowed a boat in the Urado Bay to visit the stepmother Iyo's house located in Tanezaki, where there was a shipyard of the Tosa clan at that time, and listened to novel stories of travelers from Nagasaki and Shimonoseki.
龍馬は姉である乙女とともに浦戸湾を船で漕ぎ、当時土佐藩御船蔵のあった種崎にある継母伊興の家をたびたび訪れては、長崎や下関からの珍しい土産話などを聞いたとされる。