The one piece world is broad and big. A place where different powers try to conquer the world. From the government, pirates, marines, etc. There are different power systems in One piece. From haki to devil fruits and different fighting styles. There are a multitude of islands in the one piece world and the worlds is mainly split up into 4 sectors, the east blue, the west blue, the north blue and the south blue. There is also the grand line and the second half called the new world.