When monk-soldiers of Kofuku-ji Temple did their "goso" (direct appeal to the court, brandishing the divine retribution), they asked the chief Shinto priest of Kasuga-taisha Shrine to take out the divine mirrors enshrined at "Honden" (the main shrine, called "Omiya-shisho") and also asked him to set Shinboku on the mirrors.
興福寺の衆徒が強訴を行う際には、春日大社の社司に要請して大社の本殿及び大宮四所にそれぞれ安置されている神鏡を取り出して神木をあつらえさせる。