One Piece: Navy Age

How will the son of the black-armed Zefa, who is supposed to die, defend the justice of the navy in this magnificent era of great pirates after accidentally obtaining the soul fragment of a doctor of meteorology from the earth? Ps: There is no female protagonist in this book, and the protagonist will not leave the navy. In addition, the author will ensure that the book is completed. This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.