At that time, there weren't many Devil Fruits yet, the Navy was just a branch of the Army, and the World Government was still weak and pitiful.
The great secret treasure "One Piece" mentioned by Roger the Pirate King was just an object that I played with when I was young. "Ravdru" at the end of the Grand Line was the place where I practiced when I was young.
As for Gol D. Roger's title of Pirate King, it was given to him by me, just like the title of Sannin of Konoha in Naruto was given by Sanho Hanzo.
As for Gol D. Roger's incurable disease, I accidentally caused it, fruit side.
This book will not compete with the plot of the original work, where Luffy and Garp's grandfather was not even born yet, nor will it have the same sailing route as the original work.
This book is an original plot. Based on the original comics, it reasonably introduces the possible blank historical truth of the year.
This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.