In March 1471, the camp of the Koga kubo Shigeuji ASHIKAGA, including Noritane, marched toward Mishima in Izu Province, in order to defeat the Horigoe kubo Masatomo ASHIKAGA.
文明3年（1471年）3月、孝胤らの古河公方足利成氏側は、堀越公方足利政知を討つべく、伊豆国三島へ兵を進めた。