Popular manga "ONE PIECE" is celebrating a global milestone of over 600 million copies in print! To mark the occasion, an official special video titled "What is ONE PIECE?" has been released. In this ambitious project, author Eiichiro Oda apparently penned the answer to "ONE PIECE" and a certain truth about Luffy onto a piece of paper.
However, the video shows this very paper being sealed in a high-pressure container and, as part of the project, sunk deep into the ocean. This act of "tossing the answer into the sea" immediately became a hot topic among fans!

The theme of this video directly addresses the biggest mystery that countless fans have been obsessing over since the early days of the series: What exactly is the true nature of ONE PIECE? That paper, with Oda's handwritten truth, is now sealed inside a "pressure-resistant glass sphere for diving" and rests on the seabed of a certain ocean.



Sounds like a crazy prank, right? But it's not that simple.
The video's description clearly lists collaborating organizations including: Japan Agency for Marine-Earth Science and Technology (JAMSTEC), Okamoto Glass Co., Ltd., and FullDepth Inc.
It also specifically notes that the video was produced under the supervision of researchers from the Cabinet Office's Strategic Innovation Program (SIP Phase 3) and JAMSTEC. The device's placement, recovery methods, and filming techniques were all professionally reviewed, with marine ecosystem protection also taken into consideration. The items placed on the seabed will be recovered in the future. In other words, this isn't a joke—the answer really has been thrown into the sea!



Ever since Roger's famous line, "Everything in this world is there," the truth of ONE PIECE has been the biggest unsolved mystery for fans. And now, the answer, personally written by Oda-sensei, truly sleeps at the bottom of the ocean. Of course, the biggest question on everyone's mind is: When will it be revealed?
The official statement says that the paper containing the truth will be revealed after the story concludes. This means, until then, we'll just have to keep waiting to see what secrets are hidden away.
▼ Special Project Video: "What is ONE PIECE?"