Modern versions often require a large patch (sometimes up to 38GB) to enable newer DLC content.

To get the updates and DLC working, you typically need the following:

New characters, such as Luffy's Gear 5 form, will be available as an additional DLC for ONE PIECE: PIRATE WARRIORS 4! Bandai Namco Entertainment Asia

The core file for One Piece: Pirate Warriors 4 .