In the northeastern kingdom of Jinwen, seven princes once vied for the throne. The next ruler was chosen through sacred divination, yet the shrine maiden entrusted with the ritual, Tsurai, had suddenly vanished. Born of a celestial being and a human, she had been appointed by the royal family for her mysterious divine powers. When she burned her sacred incense, the smoke would twist and coil into forms that revealed the next heir to the throne. With her disappearance, the princes began to press their claims, and civil war threatened to erupt. Seeing the peril that loomed over the kingdom, the king called upon a hero to seek out the missing shrine maiden.