The struggle for hegemony among lords + the establishment of the technological industry chain + the establishment of the social and economic system. (This book is a bit obscure and difficult to understand, so you are welcome to discuss it actively.)
In 2086, the earth was swallowed by a black hole, and all the people entered another world to survive. They practiced the "Spirit Assisting Art" that is common to all people, found companions, built bases, and recruited residents.
And all of these require prosperity, which comes from the prosperity of the base and the prosperity of the people.
Too bland and without passion.
Very Holy Mother! Can't kill!