One Piece No Go No Ken
(This is a fiction)
Raoh Could not Inherit the Hokuto's mantle and set to become a king in his post apocalyptic world.
Defeated by Kenshiro he dies regretlful for not being able to fulfill his destiny.
He gets reborn in the One piece World and sets out as a conqueror of the seas.
Prepare yourself for Raoh and Luffy to wreck havock on both marines and pirates
Edit : I do not own one Piece or Fist of the north star or even the image above.