Shadows of the Forgotten
He witnessed the Aztec Empire, the Roman Empire's fall, World War I, and even World War II. At one age, he is a patriot; at another, he is a brilliant innovator.
One day, chaos emerged in the human world, and monsters went on a rampage, destroying civilization. Humans were called to the other realm to train and dwell there. They were introduced to the Gods' Games. He disguised himself as a common mortal to see the games through the perspective of a mortal.
However, as the game progresses, he discovers the nature of actual games and their cruelty. He comprehends the implications of the Gods' terrible games. Humans were little more than meat shields and entertainment for the other Gods under Hero's disguise. Their struggle and sacrifice to safeguard the new planet from demons are ridiculed.
He understands that he must act. This is no longer a battle between humans and demons, but rather a battle between Gods.
This is the story told through his eyes as an immortal who protects and watches over mortals. This is the narrative of Asca, humanity's everlasting protector.