Yamatai Honshu Theory

Later, however, in "Gaikoku no Jijo Chosho" (Foreign Affairs Chronicle), he proposed the theory of Yamato-gun in Chikugo Province.

Since then, from the Edo period to the present, the mainstream of the academic world has been largely divided between the "Honshu theory" (Naito Konan et al.) and the "Kyushu Theory" (Shiratori Kokichi et al.).

The "eastward shift" theory holds that the Yamataikoku moved to the Kinai region and became the Yamato Kingdom.

[citation needed] Masao Kume proposes the Two dynasties parallel theory (二王朝並立論) and states that the Queen Country (女王国) of More than 2,000 miles from the county to the Kingdom of Women (自郡至女王国萬二千餘里) is different from the Yamatai Kingdom (邪馬台国) of Thirty days by sea (海路三十日) （ 20 days of water travel from South to Touma (南至投馬国水行二十日) and Ten days of water travel from the south to the land of Yamatai (南至邪馬台国水行十日) and the female kingdom in Tsukushi is in Kinai through the "Civil War of Wa (倭国大乱)".

[8] It is sometimes considered the birthplace of the Kofun system of tombs which is highly linked to the emergence of a state level society.