One Piece, the world’s best-selling manga holds many mysteries and unanswered questions that have led fans to develop their answers and theories until the creator Eiichiro Oda answers it himself. However, the biggest question and mystery of the entire series to this day is “What is One Piece?”
This question has been daunting to fans since the beginning of the series and even after more than 2 decades, the question has still not been answered by the series. Some fans’ theories are way off, but some are so logical and analytical that it forces the entire One Piece community to think about it.
![Strawhats in One Piece](https://fwmedia.fandomwire.com/wp-content/uploads/2023/10/03071506/Strawhats-in-One-Piece-1.jpg)
One Such Theory is the Red Line Theory, which came to light in 2017 and has been considered one of the most apt theories of all. It suggests that One Piece is not a treasure or a devil fruit or something shiny. On the contrary, it is the destruction of the Red Line so that the entire world could become One Piece.
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What is the Red Line?
The Red Line is a large ring-like continent that wraps around the entire globe dividing the single Blue Sea into four seas: East Blue, West Blue, South Blue, and North Blue. It is supposed to go 10,000 meters deep from the sea’s surface to Fish-Man Island on the ocean floor.
At the same time, the summit of the Red Line is high enough above sea level to be considered impenetrable. Mary Geoise, the World Government’s capital city, is situated atop the Red Line at the midway point of the Grand Line, where the Red Line and the Grand Line intersect.
![The Red Line](https://fwmedia.fandomwire.com/wp-content/uploads/2023/10/09052753/The-Red-Line.png)
The Red Line Theory is the perfect theory to support most of the questions in One Piece, including All Blue and the resurfacing of Fishman Island.
The Red Line Theory in One Piece
According to the Red Line Theory, which was posted by a fan, the endgame of One Piece would include the collapse of the Red Line, a massive wall-like landmass that splits the single Blue Sea into four seas. According to the hypothesis, the Red Line would be destroyed since it would solve many problems and achieve the objectives of many of the important characters.
Brook would reconnect with Laboon, Franky would have a ship that has gone around the world, Sanji’s All Blue would be revealed, and Luffy would become Pirate King.
![The Red Port - The Red Line](https://fwmedia.fandomwire.com/wp-content/uploads/2023/10/09052946/The-Red-Port-Red-Line.png)
Destroying the Red Line at the halfway point and Reverse Mountain also completes certain other objectives, such as annihilating Marijois and the Celestial Dragons and allowing Fishman Island to rise to the surface.
The idea confronts significant problems, including many unsolved questions, yet it is currently the only theory that makes sense. However, like other ideas, this one is speculative, and only one man knows the exact answer to What is One Piece, Oda San himself.