In 1517, with the help of Chikanobu KAI who was the Hyuga local lord, Koretoyo counterattacked Korenaga and his son and regained the clan's home ground called Yabe Town.
1517年、惟豊は日向の国人甲斐親宣らの助力を得て惟長父子に反撃し、本拠地矢部町を奪還する。