After the World Lost Its Memory, Five Books Woke Up

Human beings believe that history will never change. Until one day, the past begins to disappear. The war never broke out, the heroes were never born, and the glorious civilization was left with only ruins that no one could understand. But no one felt abnormal - because humans have forgotten even what they have forgotten. Except for the five "people" who just woke up. They are the Bible, the Analects, the Odyssey, the Mahabharata and the One Thousand and One Nights. In order to prevent mankind from losing its entire past, five books that have been circulated for thousands of years can only break into disappearing eras and make history happen again. But if history is written by war, betrayal and death - should they save history or change it?