Now that I think about it, if Shanks had the mark of the abyss 14 years ago, that means he may have been immortal.
So he might have been fighting Mihawk with immortal stat boost
Mihawk upscale ? Maybe even Blackbeard too depending on when he got that mark
So he might have been fighting Mihawk with immortal stat boost
Mihawk upscale ? Maybe even Blackbeard too depending on when he got that mark