One Piece. Big Score. Book 12. Water Seven, City on Water

The Davy Back Fight is officially over, and the Straw Hat crew sets off on their next journey. The new destination is Water Seven, also known as the City on Water. This place is known as home to the best shipwrights in the world, and Luffy's ship, which has been through many trials, is in urgent need of repair. But the rubber captain has no idea that dark clouds are gathering over one of his crew members – archaeologist Nico Robin. The past that haunts the woman could endanger not only her but the entire Straw Hat crew...
The book includes volumes 34–36 (chapters 317–346).