"Now, you should understand how important you and your people are, right?"
Zero explained everything slowly and concluded, "Billions of years have passed since the catastrophic war that swept across the entire sea of stars and plunged the glorious three-dimensional universe into darkness.
"It's been more than ten thousand years since the Phantom and I woke up and regained our extremely weak consciousness.
"In the past ten thousand years, the Phantom and I have been trying to kill and destroy each other in the land that you call the Other World. We have tried to strengthen ourselves and kill the last remaining soul of the other.
"Our struggle has affected the entire planet. As a result, all the descendants of the ancient civilization who have transmigrated to this land have lost their former glory and forgotten their sacred mission.
