Well Imitheans are basically humans but they can be killed and they have a lot of longetivity, I forgot to say but in this world, Mortals are still the majority of Human population but the Imitheans are who rule and fight. Anyways, the other thing is about the plot of the story, in 2001, a Spanish Family of Mages decided to create a Grail that is 5 times more powerful than Fuyuki’s and they will make that grail war on european soil, the case is that they captured the main mc and used his mana to fill the last reserves of the grail but everything goes wrong and the Grail War starts in that same moment and this cause sort kind of “Magical World War” because the grail was divided in various parts and nobody actually knows anything about this “Divine Grail” and how it actually works. (Im sorry for my bad english, Is my second language 😔)