Kofun system

It is believed to represent a new level of social complexity and the advent of the Yamato Kingship The concept was proposed in 1991 by Archaeologist Hiroshi Tsuide.

In addition, Kazuo Hirose and Yoshiro Kondo have proposed similar concepts under the name of anterior-posterior tomb state and anterior-posterior tomb order, respectively, but the emphasis of the arguments differs among the theorists, and there are conflicting opinions, especially from the perspective of state formation theory.

Sadayuki Watanabe states that in the late Yayoi period, Yayoi burial mounds were established in a unique form in each region, and ritual and political forces were formed in each region, while in the Kofun period, the size of the anterior and posterior circle mounds increased, and the protruding parts were arranged in the anterior part.

[5] In addition, Hironobu Ishino states that the anterior-posterior mound was adopted as the tomb of Okimi in the middle of the 3rd century and continued until the end of the 6th century, but the fact is that the Tsukushi Kunizukuri, who was a general of the rebellion in the Emperor Keitai In fact, the Keitai dynasty, the rebellious general Chikushi Kunizo Iwai also built tombs in the front and back, so the "front and back tomb system" was just a spirit of the chiefs, and the content of rituals actually changed greatly.

[6] Kenji Fujita disagrees with the assumption that a unified system was established "throughout the entire region" from the beginning of the 350 years of construction of giant anterior-posterior mounds.