We’ve all made a big deal out of the ageless surgery and it is indeed a big deal. Ever since it was introduced, there have always been people like Im, who made us think “Is he on of them? Is he one of the vampires who’ve been operated on?”.
It’s still a possibility but is the ageless surgery really the only way to achieve eternal youth? How attached do you think that people like the Gorosei are to their original bodies? Imagine if the user of the Ope Ope No Mi was in the side of the World Government. Putting their personalities (mind) in a younger person’s body and letting the young person’s mind die in their old bodies would as easy as making a gesture with one’s hands. Morals? This is the world Government we’re talking about and I sincerely doubt any one of them would be impeded by such notions. With that in mind, I don’t even dare to presume how many bodies the Gorosei have switched.
Is that everything? Heavens no, this last part is the most important. I hope you still remember the concept of “Advanced Conqueror’s Haki allowing users to leave part of their consciousness in an object”, which I mentioned at the very start of this theory. In One Piece, we’ve run into the concept of “inheriting one’s will” and “waiting for the right time and person” multiple times. However, some of them have been hinted to be more literal than we’d initially thought. Personalities of people with immensly strong Conqueror’s Haki have been hinted to still be waiting for people, people like Roger and Xebec.
Now, normally, the user of the Ope Ope No Mi can only switch personalities, not “inject” them into objects like I believe Conqueror’s Haki can. HOWEVER, what if someone’s personality is contained at some object through Conqueror’s Haki and THEN switched out with another’s? What personality am I talking about? The possibilities are open but I have a specific one in mind: Rocks D. Xebec
Initially I considered Xebec would be found at the same location as Uranus but that role can be easily filled by the World Government. But in the context of this theory, a possible scenario, which I strongly believe is likely to be the case, is that the World Government has Xebec’s consciousness hidden away under Mary Geoise. Xebec is the one person who presumably knew at least as much as Roger about the Void Century and about each dark secret and project the World Government has been carefully hiding. The possibility to unleash Xebec on the world once more (without a Roger and a less strong Garp) or the possibility to gain Xebec’s knowledge about the secrets of the World Government. Both would be possible by putting his consciousness on a new body and both would be catastrophic. Doffy knew it!!
What is “that day”? Wasn’t it the day he discovered and came across the secret the World Government keeps under Mary Geoise? And how would Ope Ope No Mi’s abilities help him on that day? I don’t think he was thinking “Oh, if only I could use the Ope Ope No Mi to perform the ageless surgery on someone right now”. No, I believe the ability he was refering to is precisely: personality transplant. That was how he’d be able to use the treasure of Mary Geoise like he states.
Another possible scenario other than the Xebec one is if the treasure of Mary Geoise is a weapon of a class similar to the 3 Ancient Weapons and it can be operated only with someone’s consciousness taking it over and controlling it. In any case, the scenarios are endless and all are fun to think about. The one thing that was hopefully made apparent is how ridiculously powerful and important the Ope Ope No Mi and what a “coincidence” it is that its current user bares the secret name of D.
*Theory by Yuuzume