This Navy Officer Is Unstoppable

A man from China transmigrates to the world of One Piece and becomes Zephyr's adopted son. He is given the name Justice, meaning "justice."

When the System he brought with him activates, he becomes a genius who grows stronger the harder he works, and will eventually crush every enemy through sheer effort.

Ace, who wants to bring the age of pirates to an end;

Sabo, who has sworn to make all races equal;

Luffy, who dreams of becoming Fleet Admiral;

These three brothers are led down different paths. Where will they end up in the future?

This novel and its characters are entirely fictional. Any resemblance to real people or events is purely coincidental. Do not imitate.