The pure love fantasy of two people who challenge their destiny.

Liu Miou was living a comfortable life as the daughter of the Liu family, maternal relatives of the imperial family of Yokoku. When she turned 16, she decided to marry Shiba Setsuho, the emperor of Yokoku. Yukimine was Mio's first love, whom she couldn't stop yearning for. On the day the emperor and empress spent their first night together, Mio, who was waiting for her in her bedroom, was handed something by Yukiho, who arrived late. It is... the decapitated head of her aunt, who was called a cruel and outrageous wicked woman. and he said to her: "You will be dethroned. After that, you will be sentenced to death."

However, ten years later, Tenkai Shiba, who became emperor after Yukiho's death, visits the palace where Mio is imprisoned. She needed the mysterious power that resided within her body to quell the demonic disease raging in the capital. The two, who spent their childhoods like brother and sister, meet again, and Mio returns to the inner palace where her grudge still boils.

The imperial pure love fantasy woven by the young emperor and the ruined consort who possesses strange powers begins.