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.
Shuichi Toyama Shuichi Toyama (外山 秀一 , Toyama Shūichi , born June 1954) is a Japanese archaeologist and historian, Professor in the Faculty of Letters at Kogakkan University. He specializes in archaeological geography, environment archeology, geomorphology, and the history of geography, and is an expert in ancient Japanese farming practices and the history of the Yamanashi Prefecture. He has conducted much research into rice cultivation in ancient Japan in particular, which has been quoted in numerous publications. In his work related to the environment and archaeology, he has examined the relationship history between nature and human beings, which was the subject of a 2008 book. In 2009 he was a co-author of a book on archaeology of the Jomon period.