I Just Killed the Celestial Dragons, and Pirate Luffy Became King.

I came to the world of One Piece inexplicably. Bad news: You will be a slave to the Celestial Dragons at the beginning! Good news: I have the Holy Grail! Ronan stepped on the bubble head and capsized his ship with a sword. Then he looked at the information in his hand and fell silent. "It doesn't matter that this is a new world. Who can tell me why Luffy ascended the throne and became king?" "Is this still the Pirate King? What did you do to me?"