Hi guys, this is my first theory/speculation, so please bear with me!
As we all know that Luffy because his devil fruit powers can withstand large amount of distress and pain caused to his body and his internal organs – Second Gear and so on…
Who else in the past have we seen withstanding very critical pain and doing stuff not possible for a normal human being even in One Piece?
The answer would be Portgas D. Rouge, yes lover of the Pirate King and mother of our late beloved Ace!
She held Ace inside her for nearly 20 months, which a normal woman’s body cannot withstand, but because of the powers of the Gomu Gomu no Mi she could withstand the presence of her baby inside her for nearly 2 years!
But eventually even with the Gomu Gomu no Mi ‘s power the 20 months was little out its capabilities and she lost her life!
And to see many theories relating Shanks and Rouge which lead to Shanks being apprentice of the Roger pirates ship, it would seem possible for Shanks having fight for the Gomu Gomu no Mi from an enemy!
Thanks for reading it! All of your thoughts are welcomed!
*Theory by Atul D Mittal