The Ouka Empire, led by its supreme commander, Ouka Tadaomi, and the mysterious military nation of Valmgraf, under the command of Gustav Heydrich. An alliance has been formed between the two nations, and their goal of "world unification" is becoming a reality. One day, during the bustling Spirit Cherry Blossom Festival, held once every ten years in the Ouka Empire, a mysterious demon appears within the empire...? Source: [Kadokomi](https://comic-walker.com/detail/KC_008282_S?episodeType=first), Translated