What does it mean to buy the world?

what was this character's arc again
I only remember None Piece's version

>>280333301
got left behind by his crew after getting stuck in a chest and knocked unconscious
couldn't climb up to where he saw the other chests so came up with a "god of the forest" routine to scare off anyone else
all the chests were empty but when luffy offered him a spot on the crew he said he'd rather stay there to protect the local weird critters from poachers
then buggy (forma del chibi) woumd up there and after fighting for a bit they became friends, and buggy left to get the rest of his body back
then he got a girlfriend in the form of a woman in a barrel that washed ashore after a shipwreck