On the other hand, stories which go too far back in history are often not referred to as jidaigeki (for example, the mythological age and the Yayoi Period, the time of Queen Himiko).
逆にあまりにも時代がさかのぼると、「時代劇」と呼ばれないことがある（神代や卑弥呼を扱った弥生時代など）。