I've been considering digging up an old copy of BESM d20 and start
pathfinderizing it for this AP.
Why? you ask?
Simple can you picture this AP viewed through the lens of One Piece?
My only problems here are it's been a long time since I last had my hands on that BESM book and the big one, while adapting it I don't want to ruin the actual tone of the AP just err..twist is a little, so I was curious to see what others may think of this idea.