One Piece: The Corrupted Admiral, with the Kirin Fruit from the Start

[Peach Must Die + Ambition + Iron Will + High-Octane Action + Decisive and Ruthless + Navy Story + A Dark Edge]

Rosen transmigrates to the world of One Piece. From the start, a chance encounter leads him to eat the Zoan-type Mythical Beast-type Devil Fruit: the Ox-Ox Fruit, Model: Qilin. Then both his parents are killed, and pirates massacre his town.

From that moment on, Rosen turns completely dark!

At this point, Roger is still alive, and the Great Pirate Era has yet to begin. After taking his revenge, Rosen chooses to join the Navy and rises all the way to the supreme throne!

Rosen: "My heart and actions are as clear as a mirror. Everything I do is justice!"

Years later, during the Summit War, Rosen and his sons, now grown into fighters of emperor-level strength, shake the world!

This book is also known as: The Man Who's Going to Become the King of the Navy!