Weird Fantasy: Starting from Getting the Book of Destiny

He is an eight-year-old child and the prince of a subjugated country. He was an orphan in his previous life. In this life, he had just experienced blood and family ties, but he was forced to witness the emperor's sister falling into the abyss to protect him. Crying in despair, a "Book of Destiny" became his only reliance. For his sister's last smile, for the words "live well", even if there is an eternal evil god ahead of him, he will use his young hands to reverse the established fate and carve out a future for the human race!