I Asked You to Guard a Grave, but You Became a Taboo in the World

In order to raise money for my seriously ill adoptive father, I took a weird order for food delivery to the cemetery, and the person ordering the food was actually a talking black cat! I thought I was lucky, but unexpectedly I got involved in a weird and terrifying world. Confucian scholars talk about the constitution of heaven, Taoist priests kill demons with swords, and I, an ordinary delivery boy, was told that my ancestor was actually the tomb-keeper of the ancient military lord Chi You! They asked me to guard a tomb, but they didn't say that there were hundreds of millions of souls of gods, demons, and soldiers buried in this tomb! They asked me to guard the tomb, but they didn't tell me that the gods in the sky, who are watching eagerly, want to crush me to ashes! They asked me to guard the grave, but they didn't tell me that my biological father, who was supposed to be dead, was actually the biggest boss of the World Extermination Organization! When the end came, the myth returned, and everyone fell into despair, they discovered in horror—— I asked you to guard a grave, why the hell did you become a taboo in the world? !