From the early Kamakura period onward, social disturbances including natural disasters and civil wars came to affect the nobility as well, culminating in the Jokyu Disturbance in which the Imperial forces were defeated and even Emperor Daijo was condemned to exile; this resulted in clear recognition that the nobility was in a crisis of life or death.
鎌倉時代に入ると災害や戦乱などの社会的混乱が貴族社会にも及び始め、遂に承久の乱では朝廷軍が敗北して太上天皇の流罪が行われるなど、貴族社会が存続の危機に差し掛かっていることが明白となった。