The sudden virus broke the peace of the past and plunged the world into chaos. The peaceful life of the past has been broken, and everyone is living a different life. No matter how gentle the person is, they will take up arms to protect themselves and their families. Some people take advantage of the situation to vent their dissatisfaction with society. The remaining order tries its best to remedy it, but there will always be dissatisfaction, and the order is broken and rebuilt again and again.
