Here’s what’s going on.
Why Fans Think a Real Treasure Exists
Series creator Eiichiro Oda reportedly wrote down the true meaning of the One Piece treasure in a document. Some fans believe that document might have been sealed or placed somewhere real-world related to the series.
This sparked a group online to plan a deep-sea expedition to try to find it.
The Proposed Search Location
The fan plan focuses on Sagami Bay, near Japan.
Previously, some fans believed the treasure might be in Suruga Bay, but Sagami Bay has become the newest suspected spot.
The Expedition Plan
A fan account called “One Piece Hunter” outlined a theoretical mission:
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Use a research vessel from the Japan Agency for Marine-Earth Science and Technology
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Hire five specialists for the expedition
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Pay for fuel, port fees, insurance, and equipment
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Conduct deep-sea diving searches
The Cost
The estimated cost is huge:
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15 million yen per day
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roughly $100,000 per day
So even a short expedition could cost hundreds of thousands of dollars.
Even Streamers Are Interested
Streamer IShowSpeed joked on stream about trying to find the One Piece himself, saying he might livestream the hunt.
Reality Check
This idea is mostly fan speculation and hype. There’s no confirmed real-world treasure hidden by Oda. The “document” is more likely something meant for publishers or the manga’s ending plan, not a physical treasure at sea.
In short:
Fans created a fantasy expedition to find the real One Piece, but it would cost about $100K per day and there’s no evidence the treasure is actually hidden in the ocean.