One Piece: Starting from Scratch to Build a Mobile Calamity!

The protagonist transmigrates to Water 7 and becomes a shipwright on the verge of bankruptcy. Just as he is about to starve to death, he comes across a broken ship and unexpectedly activates the [God-Tier Ship Spirit System]. He can give any ship a “ship spirit,” which serves as the System interface. From then on, he embarks on an unconventional path to power. Install an “Armament Haki coating” on a ship, and he gains Armament Haki too! Install an “Observation Haki radar,” and he gains top-tier Observation Haki! Combine Sea Kings’ genes to create a “biological engine,” and his physique becomes comparable to Kaido’s! His goal is to gather legendary materials and transform his ship into a mobile fortress surpassing the Ancient Weapon Pluton. The ship is his nation, and he is its king!