God Of Soul System神级剑魂系统

claystage.com/one-piece-world

static.wikia.nocookie.net/5f34ab54-72c8-4133-a986-4490eaeaf411

So the world is made up of something similar to a +pulse sign with an =equal sign overlaying it.

The 4 blues are separated from each other by the grand line and the red line. You cannot reach one blue from another without have ways over the Redline and ways this get through the grandline.

The grand line is lined with two parts of the sea called the calm belt. Very few people have way of getting through the calm belt seeing as there are not currents, wind, and is home to massive amounts of seakings.

With the way reverse mountain is, the east and south blue are actually aligned with the Paradise part of the grand line while north and west blue are along the new world.