According to an anecdotal story in "Okagami (The Great Mirror)," the retired Emperor Yozei said that Emperor Uda used to serve him. It is also said to have been a big headache for the retired Emperor Uda as Emperor Yozei had tried to restore his government.
『大鏡』には、陽成上皇が宇多天皇のことを、「あれはかつて私に仕えていた者ではないか」と言ったという逸話が残っているが、陽成上皇が復位を画策しているという風説は天皇を悩ませた。