Ōkagami (大鏡, The Great Mirror) is a Japanese historical tale written around 1119[1] by an unknown author.
[2] In the tale, the writer listens to a conversation mainly led by a 190-year-old man, Ōyake no Yotsugi (大宅世継, literally "world-successor"), who recalls the past.
A 180-year-old man, Natsuyama no Shigeki (夏山繁樹), adds comments and a young samurai puts questions to these two elders.
This narrative strategy makes the story vivid and allows for the natural addition of various opinions and criticisms.
The structure is modelled after traditional Chinese history books like the Records of the Grand Historian.