There were 2 lineages in the Southern Court, and since the false Emperor, Emperor Gokameyama, who was put in Yoshino Province as a distraction, made peace with Yoshimitsu ASHIKAGA by falling into his snare, after the unification of Southern and Northern Courts in 1392, samurai throughout the country who were pro-Imperial lost their reason to support miyagata (Legitimate Succession of the Southern Court), and the power of miyagata only shrunk as time went by.
南朝には正副二統の皇統が存在し、陽動作戦のために吉野に設けた擬天皇である、副統の後亀山天皇が、足利義満の謀略に掛かって講和したため、1392年（元中9年）の南北朝合一以後、全国の勤皇の武士たちは宮方（南朝正統）に味方する大義名分を失い、宮方の勢力は衰微の一途をたどった。