The latest spoilers for "Once Piece" Chapter 819 claimed that the whereabouts of the final poneglyph, which will point to the location of Raftel, will be revealed.

In Pirate mythology, there are four poneglyphs. Luffy and the rest of his crew already possessed one. The other is being held by Big Mam while the third is with Kaido.

Obviously, Luffy and the Strawhats will have to pry the two poneglyphs from the cold dead hands of Big Mam and Kaido.

The fourth is quite tricky, because nobody knows where it is until now, at least according to the spoilers for "Once Piece" Chapter 819.

In the "One Piece" community forum Oro Jackson, user Zaitochi has an interesting take about Oden being the last of the race of men who knows all about the Void Century.

"Due to his interest on stone mason, he decided to set sail together with Roger Pirates to find Raftel. He is descendent of Poneglyph creator and willingly to know the history of his ancestors why they built Poneglyph," he wrote.

Meanwhile, according to Ecumenical News, Momonosuke's backstory might be tackled in the next chapter of "One Piece," particularly on the identity of his father.

The article also pointed out about some hints in previous manga chapters on the location of the final red poneglyph.

"In his fight with Luffy and Law, Doflamingo had previously mentioned about a secret regarding Mariejois. And this secret could be that the place holds the fourth poneglyph," it said.

Watch out for more "Once Piece" spoilers ahead of the release date of Episode 819 on Mar. 14.