God-Killing People

Thousands of years ago, the world was invaded and ruled by the spirit race. They called themselves the gods and regarded all races as ants. Because they were too powerful and did not take all races into consideration, all races rebelled. Under the leadership of a man named Slayer, the spirits were driven out of the spirit world by offering sacrifices to the creatures of all races. Nowadays, a young man who lost his memory was cursed and was adopted by a couple. After experiencing a brief period of happiness, a mysterious man in black attacked the village and the village was massacred. The gods are also appearing one after another. What are they planning? The world is like a chessboard, but who is playing against it?