Deadly! Raging Blow!!

But why would a Pirate Hero class use a weapon not Pirate related weapon at all? Yes I'm aware Phantom gets a pimp cane which has nothing to do with Thief weapons, but they are able to mimic other class skills so I'd give them an exception. A Pirate Hero that seems to a Warrior? What is this?

Because the pirate hero stole the sword from some warrior and proceed to use it to fight with. Yes, a 'hero' who steal stuffs.