Arata has always expected to make his own way in life as a young kid from a noble family in Amawakuni—until word of the princess's weakening reaches his city. His grandmother had declared him to be female at birth, and now, with no more girls to succeed the matriarchal Hime clan's princess, he is next in line for the throne! Arata observes an assassination attempt on the princess by none other than her own guard, the 12 Shinsho, while disguised as a woman awaiting a replacement. The crime is laid on his head, causing Arata to flee to the Kando wilderness, where no one is supposed to survive. Meanwhile, Arata Hinohara yearns for the past in modern-day Japan.