In 1575, during the end of the Sengoku Period (Period of Warring States), Mitsuhide AKECHI and Yusai HOSOKAWA who were ordered to invade Tanba and Tango by Nobunaga ODA, killed former Shugoshoku Yoshimichi ISSHIKI, leading to the downfall of the Isshiki clan.
戦国時代(日本)末期の1575年、織田信長から丹波・丹後進攻の命を受けた家臣の明智光秀と細川幽斎らに侵攻され、旧守護職の一色義道は殺され、一色氏は完全に没落した。