Since the family of Hirashima Kubo was in an adversary relationship with Yoshiaki ASHIKAGA, who was supported by Nobunaga ODA, they had been treated coldly between the Azuchi-Momoyama period and the Edo period.
織田信長に擁立された足利義昭とは対立関係にあった家系のため、安土桃山時代および江戸時代でも冷遇されていた。