Review Detail of Allhavens in Transported to One Piece

System slave MC. The MC does nothing if the system does not order it. In addition, he has not changed anything in history to await the straw hats on the Mermaid's island. What's the use of beating someone up if he comes back to **** you? The MC threw a Getsuga Tenshou in the face of Holdy and didn't kill him, just so the plot with luffy happened. The same with the situation of the mermaid princess. If you're not going to change a fucking story, it's not a fanfic, it's just a damn copy of the canonical plot with a ghost following everything. The guy has the potential to blow up this planet with a sneeze if he knows how to take advantage of the system, but was thinking about following an idiot weaker than himself because of the plot. I hate this garbage