Kanemaki Jisai and Sasaki Kojirō were both a what of respective fields of study?
Sasaki Kojirō Sasaki Kojirō (佐々木 小次郎 , also known as Sasaki Ganryū) (1585? – April 13, 1612), often anglicised to Kojirō Sasaki, was a prominent Japanese swordsman widely considered a master of his craft, born in Fukui Prefecture. He lived during the "Sengoku" and early "Edo" periods and is most remembered for his death while battling Miyamoto Musashi in 1612.
Shin'ichi Ishiwata Shin'ichi Ishiwata (石渡 信一 , Ishiwata Shin'ichi ) is a Japanese scientist, a professor at Waseda University department of science and engineering physics course. His specialty is biophysics, particularly the mechanism of muscles and motor proteins.