Akihana is an Ayakashi; a yokai “demon” from the noble house of onikisu, a chance encounter with Katsuro no Hiroyuki an elite onmyouji places his life in danger. Although they are mortal enemies yet she decides to save his life before returning to her world. It is left to Akihana to decide whether to abandon him completely or continue to fulfill her duties as the next head of the onikisu family.