Best Civilization

Four hundred years ago, the superstar civilization suffered its first devastating blow. A group of teenagers who returned from the black world mastered unimaginable miraculous powers. Some of them took the lead in launching a war on the giant star that could destroy civilization. The impact of this war exceeded everyone's imagination at the time. It unified the previously chaotic national system, took the entire planet as a whole, divided cities into regions, moved different races, and ultimately formed the division of superstar power for the next four hundred years. In addition, the last winner among those teenagers created a new affiliated planet for the superstar before leaving the superstar, adding tens of thousands of land resources to the superstar out of thin air. In addition to the unification of the planet, the last event of that war that had a huge impact on the history of Superstar was that some of the teenagers in that war chose to stay on Superstar. These young people, who also had powerful miraculous powers, lived in harmony with the people on Superstar for the next four hundred years. They happily shared their miraculous powers, changed the destroyed planet, and led the civilization and progress of this planet. Until the present era, at the beginning of the story, it is also the first step for the civilization I want to write to truly move towards the starry sky. (Multi-protagonist story line progresses) (Single male protagonist) (Single female protagonist) (Reborn) (Time traveler) (Open harem)