Fight for the City

"Thank you for your decisiveness, which gave me wings." The world has experienced great destruction, and the population has been wiped out. Twelve large cities have stood on the ruins, leading the survival and development of human civilization. The protagonist is involved in various intra-city and inter-city conflicts, tired of the political struggle of "there must be a river and lake for everyone", and creates an outstanding and independent thirteenth city, becoming a unique, quiet and brilliant rainbow on the road of civilization.