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.
Masahiro Yasuoka Masahiro Yasuoka (安岡正篤 , Yasuoka Masahiro , February 13, 1898 – December 13, 1983) was a Japanese scholar of yangmingism who, through his philosophy, reportedly exerted considerable influence on many Japanese politicians, including postwar prime ministers of Japan. He has been considered a backroom power broker or eminence grise.