In 2025, Blue Star South City was suddenly isolated from the outside world by a black barrier. Some people inside turned into zombies, and some people awakened as people with super powers. But in the end, the superpowers were defeated by the zombies and the entire city was infected. Almost every month, several cities are shrouded in barriers. Later, people learned that Blue Star had become a chessboard for the game between the holy gods and the dark demons...
