"Okagami" (the Great Mirror) is called "Yotsugi Monogatari" (The Tales of Yotsugi) in that the story is progressed through the conversation between a 190 year-old okina (old man) named OYAKE no Yotsugi and a 180 year-old okina named NATSUYAMA no Shigeki.
『大鏡』は物語が190歳の大宅世継と180歳の夏山繁樹の2人の翁の対話で展開することから『世継物語』とも呼ばれている。