In the vast world, ordinary humans of the "Japanese" and "Night" races coexist in balance.
The "Japanese clan" exists to protect mankind, and the queen of the past and her people rule under the protection of the Phoenix;
The "Night Clan" hopes to dominate the world and is dissatisfied with the power of the "Japanese Clan".
After thousands of years of preparation, the war between the two races is about to break out, and mankind will face unprecedented disaster. The balance that has remained unchanged for thousands of years is shaken.
The girl with unknown life experience is the protagonist of this war, but she does not know it. With her dual identity, she always experiences special things. Is it a coincidence or a conspiracy?
Intricate relationships, past and present life reveal unknown secrets...