According to the 'Momotaro Legend of Sanuki,' the origins of the Momotaro story lie in Yamatototohimomosohime no Mikoto asking her younger brothers, including Kibitsuhiko, who were on the opposite shore invading Kibitsu, for help in defeating pirates who were attacking Sanuki.
讃岐の桃太郎伝説では、海賊に讃岐を襲われた倭迹迹日百襲媛命が対岸の吉備の国に進攻していた弟の吉備津彦兄弟に助けを求めたことが、桃太郎伝説となったと伝わる。