It contains anecdotes about Shinto and Buddhist deities which are based on Honji-suijaku setsu (theory of original reality and manifested traces), centering on engi (writing about history) about shrines in Togoku (the eastern part of Japan) including the Kanto region.
関東など東国の神社の縁起を中心としつつ、本地垂迹説に基づいた神仏に関する説話が載っている。