There is one goal that all pirates have who set sail after witnessing the death of Gol D. Roger or hearing the last words. His treasure, which ended up not being his, but which stimulated exploration, ushering in the great era of piracy ONE PIECE. The goal is only one thing: to reach Laugh Tale.
There that treasure is found, which we still don’t know what it is, which could be a treasure chest full of gold, an ancient city, a monument, or memories of a now-lost past, or all of these things together. Few know. And by the way how many people have found the one piece?
From the recent ONE PIECE flashback dedicated to Gol D. Roger and Oden Kozuki, you can get the answer. We know that Goal D. Roger was the last to enter Laugh Tale along with his crew, and that the island before him had been completely uninhabited for 700 years. Previously, it was the mysterious Joy Boy who went there and created the One Piece, the mysterious treasure. Because of this, only one person found the One Piece in the story of the manga or the pirate king since joy boy was simply the creator.
Now it only remains to see how Luffy reaches Laugh Tale together with his crew to also understand what the legendary treasure consists of.