I hope you guys can read this and let me know your opinions on it.
Compared to my usual theories, this will be considerably shorter but equally significant. One of the concepts I'm basing this theory on is one I've talked about in more detail in my theory about the ancient weapons.
I won't tire you with a long winded explanation but what you need to get from it to read this theory is the idea that advanced haoshoku haki can allow a user to maintain a part of their consciousness in an object / location and can leave residual haki, at least I beleive so. With that in mind, let's get on with the theory.
The Ope-Ope fruit is certainly a multifaceted one among devil fruits but we've only seen two sides of it, its potent fighting potential and the potential for a knowledgeable user to use its abilities to perform the ageless surgery on another and gift them with eternal youth. Well, I'm here to tell you that we've seen one more facet of this ever so mysterious fruit and it's a HUGE and extremely important part of it.
To go back to the beginning, the very introduction of the ope-ope fruit has been a very subtle one, with its true significance being hidden under the emotional scenario that is Corazon's adventure with Law and its true potential being hidden under the guise of comic relief.
The Ope-Ope fruit was once found by a pirate / former marine named Diez Barrels (X-Drake's father) and he wanted to sell it to the government for money.
So far so good, right? I mean, it'd make sense for the government to want such a powerful for itself. HOWEVER, the price they were willing to pay for it was...*drum rolls*...a whole whooping 5 BILLION (5.000.000.000) belly.
Can we take a moment to realistically comprehend what this amount means? This price is more or less the same as Whitebeard's bounty. Hell, it's roughly just 500.000 short of the pirate king's bounty. They wanted it badly enough that stealing it meant you'd make the world government your enemy for the entirety of the eternal life you may had gotten.
You might be thinking "Yeah, but they could grant Im (if he's not already immortal) or whoever else eternal youth through the ageless surgery, so it's worth the money." Yeah, but is that really the case?
Law said that many people view the Ope-Ope fruit as the ultimate devil fruit and regard it as the devil fruit which has the power to realize one of humanity's oldest dreams.
Here's the 5 billion belly question though: Even if that dream is eternal youth, is the ageless surgery truly the pinnacle of the ope-ope fruit and its mightiest ability? In my opinion, : and Doffy knew that. Why does it matter that Doffy knew that you ask? It matters a lot, because Doffy was aware of what the world government has hidden away at Mary Geoise. And in light of his knowledge, Doffy stated the most important ability of the Ope-Ope fruit during his fight with Law. This is what this theory has been leading up to so pay very close attention to this next part.
That ability is none other than: PERSONALITY TRANSPLANT
Yes, you absolutely heard me right. The ability which gave Smoker boobs, gave Tashigi a taste of what respiratory failure would feel like, made Robin want to kill Franky and left Sanji with a crippling debt to Nami is the one I'm talking about.
Please remember this picture for now because you'll grow a new appreciation for it after I show it to you again after saying some things. First, I want to point out a fact about the personality transplant.
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 fruit 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 haoshoku 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 haoshoku haki have been hinted to still be waiting for people, people like Roger and Xebec.
Now, normally, the user of the Ope-Ope fruit can only switch personalities, not "inject" them into objects like I believe haoshoku can. HOWEVER, what if someone's personality is contained at some object through haoshoku 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 governemnt keeps under Mary Geoise? And how would the Ope-Ope fruit's abilities help him on that day? I don't think he was thinking "Oh, if only I could use the Ope-Ope fruit 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 fruit and what a "coincidence" it is that its current user bares the secret name of D. Thank you all for reading, I hope you enjoyed doing so.
This was a theory made by yours truly, Yuuzume. :