Kaido Revives Ancient Weapons in Onigashima?
Kaido has a big dream to find One Piece and become the ruler of the ocean. After that, he tried to create various chaos that occurred in the world. However, for now, Kaido himself has a goal where he wants Wano to become a territory for Onigashima. In other words, Kaido wants to turn Wano into New Onigashima.
The question then becomes why Kaido wants the Wano area to become the new Onigashima? This is what gave rise to an interesting theory, which relates to Kaido's goal of forming a new Onigashima. In theory, it is stated that this could have something to do with one of the ancient weapons that is still a mystery, namely Uranus.
The skull head that is on Onigashima and became the palace of Kaido, is believed to be part of Uranus. It is possible that Kaido's motivation for moving Onigashima to the flower capital was to reunite the skull and body, which are believed to exist and are buried under the flower capital. When the two are united, then Uranus' ancient weapon will be activated.
This is based on one of the yokai in Japanese mythology, namely Gashadokuro, where the yokai is in the form of a giant skull. Kaido had said many times that Wano was something very precious to him, and that it might actually have something to do with Uranus. We can see this from the figure of Crocodile, who is trying to take over Alabasta because he knows that one of the ancient weapons, Pluton, is there.
Kaido himself is believed to be using the ancient weapon to start a chaos and war in the world of One Piece, something he has always wanted. He has lived in Onigashima for many years, so of course we also wonder why then Kaido was so adamant about moving Onigashima to the flower capital?
Of course it wouldn't make sense if Kaido didn't have a big plan behind it all. Because of that, Kaido seems to have planned everything since two decades ago and now is the right time to execute the plan. When then the skull head fuses with the body, it will be difficult to prevent later.
In fact, maybe this also has something to do with the history of Wano. Resurrecting Uranus is something very big, but Kaido has prepared everything and has announced that he will make the biggest war in history. So, now is the time. The new Onigashima project is basically a mobile pirate bastion.
In its own mythology, Gashadokuro was originally the skull of a person who was later transferred to the capital city of Japan at the time, namely Kyoto, and then using magic power was born the giant skull of Gashadokuro. This of course sounds the same as what Kaido is doing now, bringing skulls to the flower capital.
Kaido seemed to have lied about the whole plan of the new Onigashima project, and his plan to make the new Onigashima the strongest fortress. However, it is likely that the Wano region will be separated or divided, and then it will turn into a giant walking fortress. After everything is done, Kaido will start the global war he wants.
If indeed Gashadokuro really exists in Wano, it's likely that the monster was sealed in Wano since the end of the lost century. His own head was then transferred to the island of Onigashima so that no one else could use his powers. We know that the residents of Wano were involved in the documentation process of ancient weapons through the Poneglyphs. So it makes sense that one of these ancient weapons is in Wano.
There are also other interesting clues related to this theory. If geeks pay attention, the name of the section in Onigashima or Kaido castle is actually adapted from the brain section. For example, Right Brain Tower or right brain tower is also Left Brain Tower or left brain tower. This seems to give a signal that the brain or skull used as Kaido's palace comes from a real skull.
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