The entire world descended into a fierce war, but no one realized what was the greatest danger to humankind. The malfunctioning of the new Astral nuclear power reactors caused a seismic space-time earthquake which wiped out Japan and most of eastern Eurasia. With the birth of the second sun, Amaterasu, came a drastic change in the world situation. It was impossible to maintain the current culture with a lack of electronic circuits, so the war ended without any victor, but only a deep scar.
It took a thousand years before humankind recovered from this catastrophe. Then another unprecedented calamity came to the capital of the military nation of Adler in former Western Europe. Blood and screams filled the burning streets as the city descended into bottomless despair. Two strange beings appeared to challenge the hero and test the fate of mankind.
Zephyr did not believe this fierce heroic battle suited him and decided to run away instead. He did not care about winning the battle; he just wished to live a normal life. For the only girl whom he had saved, he promised to turn his back on everything. This is not a story about heroes; it is a tale about those who have lost.