The account states that during the period around 170 to 180, Yamatai was beset by warfare, but after Himiko became ruler, the strife was brought to an end. She was a shaman who claimed to be following the instructions given to her by the gods in administering the government.
In 239 she sent slaves and other articles of tribute to the Chinese state of Wei, acknowledging herself a subject of the Wei ruler.
She died sometime between 240 and 248, and after her death the state was once more plagued by war.
Scholars disagree as to the location of Yamatai, some placing it in Kyushu, others in the area around Nara; so far no way has been discovered to determine for certain which hypothesis is correct. The Nihon Shoki, a Japanese work that deals with the history of the early period, identifies Himiko with Empress Jingii, but such an identification involves a discrepancy in the dates customarily assigned to the two figures.
She remained unmarried throughout her lifetime