One Piece: After Being Exiled by Sengoku, I Began Building Fortresses (Part 2)

Transmigration brought me into the world of One Piece-but as a mere Earthling with a pitifully low racial stat cap, I was nothing more than a combat-inept weakling. To make things worse, I was exiled to the infamous Marine Branch 157, known far and wide as the Navy's retirement home.

And yet...

A few years later, what was once a crumbling outpost with only a handful of half-hearted marines-
...has transformed into a sprawling, modernized city that stuns the world.