In One Piece, Start as Shigeo Kageyama!

Traveling to the world of pirates, Ciel obtained the role-playing system of all worlds and became the strongest person! Psychic Kageyama Shigeo, Naruto Uchiha Madara, Death God Aizen Sosuke... Whitebeard: Today's young people are really scary, I feel inferior to them! Garp: I can't even break this guy's defense. He must be a monster! Sengoku: Why does he have so many abilities? What kind of devil fruit ability is he? Who can tell me! Five Old Stars: Ciel, how dare you challenge the majesty of the World Government and the Celestial Dragons? You deserve death! Im: Ciel, I admit that you are my strongest opponent, fight me! When different characters appear around the world! All forces are aware of this. Charr the Unknown... He's here again! This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.