Dream Back to the Universe

[Multiple protagonists + Group portraits + Brain-burning + Super powers + Slightly yandere] I dreamed of a prosperous world. When I woke up from the dream, I realized that the prosperous world was just a dream. After the massacre of the Si family, in order to fill the vacancy of the Si family, the country established a special department composed of foreign warriors to replace the Si family. More than ten years later, in order to investigate the tragedy of that year, the descendants of the Si family used the world as a chessboard and laid out a complicated chess game. And the truth gradually emerged...