Ninigi is the grandson of the sun goddess Amaterasu, being the god of rice and of the imperial family. He is also known as Ninigi-no-Mikoto. He was sent to earth to plant rice and it is said he is also sent to earth to become emperor of Japan. Amaterasu sent Ninigi to pacify Japan, with three items, a sword, mirror and a jewel.
On earth, Ninigi married the daughter of a mountain god who conceived their child on the first of marriage causing suspicions in Ninigi. He built a house for her with no doors, where Ninigi’s wife would give birth in it. If she was unfaithful, the child would die. Over time three sons were born, one of them called Hikohohodemi would further on have a child called Jimmu-Tenno.