The Spartan War (Male Reader x MCU)

He was one of the best generals in all Greece, because of him, Sparta and many others cities won, because of him. Of course war ends with blood, and when the barbarians decided to invade Sparta during the war, Y/N prayed to the gods to help him and his fiancée Thea, he prayed to save her and his people, he prayed to the God of War himself Ares. "Destroy my enemies and my life is yours!" those were the words Y/N screamed to the sky, Ares answered by killing every Barbarian in Greece, in exchange, Y/N became Ares' right hand. But being his right hand meant he needed to have no weakness, Y/N in blind rage destroyed all of Athena's followers, including Thea as the last. Rage entered his veins, the ashes of her fiancée became one with him. Y/N has seen how the gods truly are, they don't care for the weak, they use them like games, his pray led to the death of his Rhea. Zeus knew what Y/N would be capable off, he would destroy all of Olympus, Ares dead by his own creation's hands, Icarus, Athena, The Sisters of Faith, The Furies, even the Primordial God of Thanatos and Aether dead by his hands. Olympus will fall, and Zeus has made many mistakes, not killing his own son... is one of them.