One Piece: the most powerful slave system

The Pirate King? Who cares about such ambitions? The world is what I desire. I will rule this entire world and make all its important figures my slaves, fulfilling my dreams while I lounge comfortably in my palace. ... Nicolas is a young man in his twenties grappling with numerous problems that have plunged his life into misery. However, in a strange twist of fate, he finds himself in the world of One Piece, equipped with a unique ability that allows him to turn anyone he wishes into his servant. Utilizing his knowledge of the characters and the world, along with his extraordinary skills in manipulation, he embarks on a journey to reach the pinnacle of power, enslaving those who threaten him along the way.