Noah Wright asked the same question, "Have you ever considered why, in the Alternate Dimension of 'The Third Holy Grail War', humans and Demons have been at war for hundreds of years?"
"..."
Leonard Churchill shook his head.
"I don't know either. But I have deduced some reasons using my abilities."
Noah Wright paused for a moment, then continued, "My teacher once said that in ancient times, Gods used planes as chessboards and the secrets of laws as the veins of the board, so-called civilizations, empires, city-states, armies, heroes, commoners, and sects... are all but pawns. The fate of the pieces is the strength of the game, determining life and death with each move. Essentially, it's all about belief and certain... things. In the eyes of the Gods, human beings, such lowly creatures, are no different from ants."
Leonard Churchill deeply agreed.
That was exactly how all the Ancient God Devotees he had encountered behaved.