Joji Incident, which occurred in 1366 during the late Northern and Southern Courts Period (Japan) (the early Muromachi period), was an incident by which Yoshimasa SHIBA, shitsuji (steward, later renamed kanrei) of the Muromachi bakufu (Japanese feudal government headed by a shogun), and his father Takatsune SHIBA, an influential shugodaimyo (territorial lord as provincial constables) and a close aid of seii taishogun (literally, "great general who subdues the barbarians") Yoshiakira ASHIKAGA, fell from power.
貞治の変（じょうじのへん）は、日本の南北朝時代(日本)後期（室町時代初期）の貞治5年（1366年）、室町幕府の執事（のちの管領）であった斯波義将およびその父で征夷大将軍足利義詮側近の有力守護大名であった斯波高経が失脚した事件。