Akashic records explanation

"The fog wasn't really fog. It was the substance that filled the universe—the ether. It was said to be imprinted with records of the entire universe, spanning the past, present, and future. Even the science of the Nobility hadn't been able to decipher those records, and history contained the names of only a few individuals who could read what was written there. They included Nostradamus, Abramelin, Paracelsus, and Swedenborg. The Sacred Ancestor was also on that list. One theory held that it was after reading the record one night that the Sacred Ancestor began his mysterious experiments. The "Akashic record" was the general term given to the great ether that recorded all of creation."

Vampire Hunter D: Tyrant's Stars 3-4