In this world, Onmyouji exists to protect the living from demons. Kiryuu Akuro partners with his childhood friend Karasuma Haruomi to defeat these demons, while also trying to solve the mystery of the monster who cursed his family to death ten years ago. Triggered by a certain strange encounter, Akuro's wheel of fate starts to turn...

Set in contemporary Kyoto, the tale of two professional Onmyouji begins!