AS201 Japan: Age of Gods/Kojiki Myths  Plain of High Heaven
Takamagahara  Izanagi (Male) AND IZANAMI (Female) Deities  give
birth to many deities, including the brother and sister:
Amaterasu-no-Omikoto and Susu-no-O (Sun Goddess and Storm God)
Ninigi-no-mikoto, Amaterasu's Grandson  Given 3 Sacred
Treasures: Mirror, Sword, Jewels  and told to "Pacify the Land"
Ninigi's Grandson allegedly becomes Japan's first emperor,
Emperor Jimmu or Jimmu Tenno,   but Jimmu is not historically
verifiable; and he definitely did not emerge as a ruler in 660
BC!!   Perhaps Emperor Sujin is first verifiable ruler but most
likely ruled in the Third Century AD, 219-249, not 97-30 BC as
official chronology would have it.   Ojin Tenno 270-310, some 20
years later, might be a better candidate for the earliest
Japanese monarch; maybe he was a renegade Puyo aristocrat who
came over from Paekche or Koguryo and took over the Sujin line
and moved the base from Kyushu to the Yamato Plain  or even
Yuryaku tenno from 456-479 AD or po