There are endless varying legends about this god-period of Japan. All that we need now say in the way of reciting the legends of the gods has relation to the descent of the mikados of Japan from the deities.
It was the misconduct of Susanoo that drove the sun-goddess into the cave and for this misconduct he was banished. Some say that, instead of proceeding to his place of banishment, he descended, with his son Idakiso no Mikoto, upon Shiraga (in Corea), but not liking the place went back by a vessel to the bank of the Hinokawa River, in Idzumo, Japan.
At the time of their descent, Idakiso had many plants or seeds of trees with him, but he planted none in Shiraga, but took them across with him, and scattered them from Kuishiu all over Japan, so that the whole country became green with trees. It is said that Idakiso is respected as the god of merit, and is worshipped in Kinokuni. His two sisters also took care of the plantation. One of the gods who reigned over the country in the prehistoric period was Ohonamuchi, who is said by some to be the son of Susanoo, and by others to be one of his later descendants; “And which is right, it is more than we can say,” remarked one of my scholarly friends.
However, during his reign he was anxious about the people, and, consulting with Sukuna no Mikoto, applied “his whole heart,” we are told, to their good government, and they all became loyal to him. One time he said to his friend just named, “Do you think we are governing the people well?” And his friend answered: “In some respects well, and in some not,” so that they were frank and honest with each other in those days.
When Sukunahikona went away, Ohonamuchi said: “It is I who should govern this country. Is there any who will assist me?” Then there appeared over the sea a divine light, and there came a god floating and floating, and said: “You cannot govern the country without me.” And this proved to be the god Ohomiwa no Kami, who built a palace at Mimuro, in Yamato, and dwelt therein. He affords a direct link with the Mikado family, for his daughter became the empress of the first historic emperor Jimmu. Her name was Humetatara Izudsuhime.
All the descendants of her father are named, like him, Ohomiwa no Kami, and it is said that the present empress of Japan is probably a descendant of this god. As regards the descent of the Emperor Jimmu himself we already know that Ninigi no Mikoto, “the sovran grandchild” of the sun-goddess, was sent down with the sacred symbols of empire given to him in the sun by the sun-goddess herself before he started for the earth. Now Ninigi married (reader, forgive me for quoting the lady’s name and her father’s) Konohaneno-sakuyahime, the daughter of Ohoyamazumino-Kami, and the pair had three sons, of whom the last named Howori no Mikoto succeeded to the throne. He is sometimes called by the following simple—and possibly endearing—name: Amatsuhitakahi Kohoho-demi no Mikoto.