When the Jinshin War took place in 672, Wakasa no Okimi was in the City of Yamato, and went over to the side of the Prince Oama (the Emperor Tenmu) after OTOMO no Fukei took control of the City of Yamato.
672年の壬申の乱のとき倭京にいて、大伴吹負の指揮権奪取に遭い、大海人皇子（天武天皇）に従った。