Review Detail of Fataki in My Pet Beast is Super Awesome

Suddenly 20 years ago all creatures beside human started mutating, China was the only country who was prepared and responded quickly so they had no problems unlike the rest of the world, where they were dying and running away from their countries for shelter. China is the only country in the world who can make contract with the mutated beasts and when they couldn't control the situation and had to recrute more people to fight the swarm of insects they decided that they are going to share the method to make contract since it would be impossible to control its spreading afterwards. After china's benevolence there was finally stability in the world and China is the only country who help some weak countries. When other countries denounced China for keeping secret how to make contracts for many years, well some people just hate you, whatever you do they hate you, if you eat they hate you if you drink they hate you (this is how it was written). China is just minding its own business, dealing with its internal problems but the rest of the world do nothing beside bothering China. The evil people till now were Chinese who went to study abroad or do business outside China and came back. This is the situation in the first 40 chapters and the Mc is still in a small city who knows where and hadn't any international contact.