This is the family grave of Terao Nobuyuki, a pupil of Miyamoto Musashi. Nobuyuki's brother Terao Magonojo was instructed on "The Book of Five Rings" by Miyamoto Musashi. There is an old rumor that only Miyamoto's sword is buried at the Musashizuka in eastern Kumamoto, and that his body is actually buried here at Nishi-no-Musashizuka, which means "Eastern Grave of Musashi" in Japanese.