I Became Luffy's Marine Older Brother

A master of the Embracing Core realm from his previous life dies during a mission, then is reborn in One Piece as Garp's eldest grandson and Luffy's older brother.

Louis, who grew up in China, joins the Marines to fulfill Garp's dream. As a Marine troublemaker, he throws the plot and everything else into chaos.

In this life, he'll protect Luffy and Ace, and won't let history repeat itself.

Garp: "Louis, you're truly my grandson. You always make this old man proud."

Sengoku: "Louis, your whole family is a bunch of troublemakers. You're involved in everything. Are you trying to make me drop dead?"

He has no interest in ending the Age of Pirates that Roger ushered in, but he can certainly throw it into chaos.

This novel and its characters are entirely fictional. Any resemblance is purely coincidental. Do not imitate.