Nightmare Game!

Gu Jinan, who had authority over the entire underground arsenal in Far East City, died during the encirclement and suppression of him by the country's military forces. He was unwilling to die like this, and his strong obsession attracted the system of Nightmare Game. The system used the temptation to repair the arsenal and resurrect Gu Jinan, and successfully tricked Gu Jinan into the game.