Apart from the 2 things mentioned in the title I will talk about the relationship between water and Devil fruits.

I firmly believe that Devil Fruits originated from a tree.Why is this the case? Here are the reasons I believe this:

• Oda has obviously been inspired by the bible and I believe that he was also inspired by the story of Adam and Eve eating the fruit of the forbidden tree.
• I do believe that the fruit represents the Devil Fruits and what about the tree?
• Trees hold great significance in the One Piece Universe and it actually shows how important Oda thinks they are.A Devil Fruit Tree would be ideal and it could be a great explanation on the Devil Fruits’ origins.

But why are those fruits supposed to be “bad”?Why are they called “Devil Fruits”?I think that these fruits have never been and are not bad at all.The World Government and the Gorosei invading and eventually taking over Mariejoa’s is the answer.The Devil Fruit Tree has been in Mariejoa’s since the Era of Joyboy.I don’t think that those Fruits have always been called Devil Fruits.I firmly believe that the Gorosei and the Government used it as a justification to invade in Mariejoa’s.The truth is that the tree was a blessing from above but the Gorosei wanted people to interpret it this way:The tree was not good but evil.

If the Gorosei had a great amount of people supporting them,invading and taking over Mariejoa’s would be very easy,and they would take advantage of the Tree.But if the Gorosei are controlling the tree how can there be Devil Fruit users today?It has always been the way it is today.When someone dies someone else can find and eat his Fruit.The fruits had been consumed by the warriors of the Ancient Kingdom resulting in victorious battles and peace.

Moving on to the third part of this theory which is about Devil Fruits and water.I found this picture of Kaku talking about a gravitational force he felt after consuming his Devil Fruit.

I believe that this gravitational force is the spirit of the Devil Fruit. Yeah I said that..
The spirit of the Devil Fruit wanting to return to the Holy Land of Mariejoa’s at the person to whom it originally belonged.
Now here is my thought on why Devil Fruit users’ weakness is sea water.It is known to all of us that we should not water plants with sea water as it is said to destroy them.The Devil Fruit users have the same weakness with the Tree of which their fruits originated from.

*Theory by Usopp Haoshoku Haki

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D: Luffy’s haoshoku haki was able to affect 50,000 men, but how many would Shanks and the others be able to defeat? P.N. Captain Nobuo

O: In exactly the same place and exact same situation as Luffy, Shanks or Rayleigh may have been capable of knocking out all 100,000. In a different setting, you can’t really compare just by asking “how many people”. Being able to knock an enemy out with haki depends entirely on having an overwhelming power gap between the two. In Luffy’s case the point is the number of people that were so weak that they were not even worth him fighting. If there were 100,000 to-some-extent-strong-willed pirates before him, it’s possible that he wouldn’t even be able to knock out a single one. On a related note, as one’s proficiency with haoshoku advances, it’s even possible to target a few people in a crowd to NOT knock out.

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