Start with a Pirate Ship

Being selected to travel from world to world, I thought it was a beautiful beginning, but what we ushered in was death and destruction again and again. This is a battle to reach the top, and more than one "protagonist" is selected. They not only pursue justice, but also pursue evil. Power is everything, do anything for power. Gordon ushered in all this in his ordinary life. When he was beheaded, he suddenly realized that he... Was already in this war.