Its extremely relevant, kingdom hearts x is set ages before the original kingdom hearts games and during the keyblade war and focuses on 5 unions competing for lux or light. You create a character, pick a union and have to gather light for your union. Each union is lead by a forteller,that inherited a tome of prophecy each. The tome of prophecy can pull events that have already happened or are going to happen into the users time. There was a master of the foretellers and a 6th foreteller who didn't receive a tome of prophecy. There's also a dodgy silver haired kid called ephamera, and in one scene a man in a black hood is seen visiting the foretellers.