This happened in the era before the Three Sovereigns and Five Emperors. At that time, monsters ruled the world. At that time, a modern person traveled to that era. The protagonist of this story was not the time traveler, but a chess piece casually laid by the time traveler. This book is about how that little chess piece grew up step by step into a hero who can kill gods.
Note: The story of the time traveler is in my last book "An Irregular Magic Stick"
Purpose: Good people have a peaceful life