By focusing on two persons who were involved in A D661-663 Baekje Relief War, the “ancestor of Mitani Gunji" who was a chief of local powerful families in the current northern Hiroshima Prefecture and Gusai who was a monk exiled from Baekje, this paper aims to identify the following three questions:
1) What was the Baekje Relief War that the two persons of life are tossed?
2) What did the war bring people in the communities?
3) What direction d id the war bring to the ancient nation of Japan?