In Japanese mythology, Ninigi no Mikoto (瓊瓊杵尊) was the grandson of Amaterasu, who sent him down to earth to plant rice there. He was the grandfather of Jimmu. Japanese mythology is an extremely complex religion and system of beliefs. ... Torii at the Ama-no-Iwato Shrine in Takachiho, Miyazaki Prefecture Amaterasu is a Shinto Sun goddess; she is the mythical ancestress of the royal family of Japan. ... Emperor Jimmu (神武天皇; Jimmu Tennō; given name: Kamuyamato Iwarebiko) was the mythical founder of Japan and is regarded as a direct descendant of the Shinto deity Amaterasu. ...