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.
Toshiro Sasaki Toshiro Sasaki (佐左木 俊郎 , Sasaki Toshirō ) (April 14, 1900 – March 13, 1933) was a Japanese author in the early 20th century. Most of his works have been published through the Aozora Bunko project.