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Thousands of years ago, the King of Hell was replaced by his own clone... After running away for thousands of years, he had no choice but to re-enter reincarnation and return to the underworld. However... Whether it is the human world, the underworld, or other indescribable things, Who can see through the eternal conspiracy deep in the mind of the King of Hell? In October 2020, a strange death suddenly occurred in a high school in Xiang City. Since then, this ordinary class of Grade 2 and Grade 4 has disappeared from everyone's lives. People in this world simply think that this moment is the beginning of the end of the world. But who knows, this is a destined part...