It is known that the universe was born 13.8 Billion years ago, and the angel civilization was born 200,000 years ago.
Didn't the universe give birth to other civilizations between the beginning of the universe and the birth of the angels? This is obviously unrealistic.
So where did these unknown civilizations go? What if they disappeared in the long river of time?
This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.
