Rebirth in Five Hundred Worlds: Looking for Someone

In this world, people have disappeared. Where are they hiding? Is this a loss of morality or a lack of human nature? After my rebirth, can I complete the unfinished task for my ancestor? What is the spherical object that suddenly appeared on the road of exploration? Who left the footprints found on the road? Why did the ancestor suddenly resurrect? If you want to know all this, please pay attention to Rebirth 500 to find someone. This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.