Jump confirmed One Piece: Pirate Warriors 2 will have a new style change system where you can use the power of Haki. In the One Piece world there are three kinds of Haki (literally Japanese for ambition) – Observation Haki, Armament Haki, and Conquering Haki. The TV commercial above shows Luffy using the Armament Haki to harden his arm to make his attacks hit harder. Haki powers can strengthen a character’s attack power, knock out enemies, and/or set up a counter attack.
One Piece: Pirate Warriors 2 is slated for release on March 20 for PlayStation 3 and PlayStation Vita.