In One Piece Odyssey Nami’s experience and skills will be taken from her. In order to get them back, you’ll need to locate 30 cube fragments scattered around Waford Island. Below is a guide on where to find her cube fragments in Water Seven. You’ll receive the Cube Collector: Nami trophy/achievement for finding all of her cube fragments.
Dock One
Shipbuilding Scaffolding
This fragment can be found on the layer of scaffolding along the southeastern part of the area.
Tower of Law
Underground Prison
This fragment can be found behind a fallen rock in the northwestern hallway.
Underground Storeroom
When you first reach the storeroom, you’ll be in a long hallway with giant fans. Across the fan on the west side, there will be some barrels you can break to reveal a hole in the wall. Use Chopper to head into the hole to find the fragment.
Water Seven City Area
Canal Restaurant
This cube can be found next to a bench overlooking the waterfall on the far eastern side of the map.