In 1568, Ujimasa who was sent away to Totomi Province transferred the last foothold Kakegawa-jo Castle to Ienari ISHIKAWA of the Tokugawa army and went away to Odawara to seek help from the Hojo clan together with the lord of Kakegawa-jo Castle Yasutomo ASAHINA.
1568年、遠江国に追い立てられた氏真は、最後の拠点掛川城を徳川軍の石川家成に明け渡し、掛川城主の朝比奈泰朝等と共に北条氏を頼って小田原に退去。