Himiko, the shamaness, who built up and ruled the land of Yamataikoku.
The mirror Yata-no-kagami, one of the 3 sacred treasures possessed by Himiko, is said to hold a dormant power to reflect the “past, present, and future".

It is the time of the Warring States.
Are the gallant figures of the famous female warriors reflected in Himiko's mirror "a memory of the past", "an image of the present", or "a visage of the future"?

As complex interactions between time and space intertwine, there is a distortion of time making the distinction between dreams and reality unclear where the unprecedented battles of Otome girls unfold.