Despite the relatively low chapter count and fast pace, most One piece fans already agree that the Elbaf arc is the best story arc the series has ever seen. Filled with incredible revelations and more mysteries to unravel, Elbaf proved to be the story arc that revealed the most about the world today and the world centuries ago.
Despite the amazing revelations the story brought, there are still a lot of mysteries surrounding the setting that we still haven't seen the answer to. As the Elbaf arc soon reaches its conclusion, One piece has several important mysteries that the series has yet to answer before the manga moves forward with the Final Saga.

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10
What really happened to Davy D. Xebec?
History's greatest forgotten pirate
The Wano arc revealed that before Roger's time there, Rocks D. Xebec, who was the true Pirate King in all but name. An Elbaf flashback finally revealed the legendary events of the God Valley incident where Rocks, real name Davy D. Xebec, met his end.
In typical Oda fashion, Xebc's death seemed incredibly unceremonious and vague for his importance in the world, leading many to believe that there may be a lot more to it than fans were seeing at first glance. Although the most likely explanation is that he ended up here, some fans remain skeptical that he may still be alive somewhere.
9
What's on Elbaf's Heaven Realm?
Elbaf's highest level
Once the heroes arrived on Elbaf and saw the titanic dimensions of everything there, they were told that the island was divided into 3 different levels; Underworld, Solar Realm, and Heavenly Realm. The Underworld is where Loki and the gigantic monsters of the island lived, while the remaining giants call the Sun Realm home.
Since the beginning, fans haven't heard anything about the Celestial Realm, leading most to believe that there is something incredibly important up there that will be seen at the end of the arc, which could be vital information about the Void Century or even the legendary High West Summit.
8
What is a scary hell snake?
A curious figure shrouded in mystery
The Elbaf Mural made Chapter 1138 one of the most important in the entire series with its crazy drops of lore. This mural revealed a very mysterious retelling of the history of the 3 worlds One pieceand revealed that the First World ended due to the powers of something called the 'Hell Fire Serpent'.
With the recent confirmation of all the God Fruits in Chapter 1182, fans are just waiting for any new information about the Hell Serpent, which some even think could be the Red Line itself.
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7
Who are the users of God's remaining fruit?
The strongest devil fruit
Ever since the Wano arc revealed the truth about the Nika fruit, fans have been speculating about the remaining hidden God Fruits that were first mentioned in the Skypiea arc.
Elbaf finally confirmed this theory in chapter 1182 by revealing the rain god Zaza, causing everyone to speculate where the remaining Godfruits might be and who might have them. Many strong opponents like Dragon and Chopper come to mind as bearers of hidden God Fruits.
6
What is it with the Bible?
The mysterious librarian
The beginning of the Elbaf Arc revealed the Owl Library, which is guarded by a mysterious giant owl named Biblo, who is said to have been doing so for many centuries.
While fans didn't think much of it at the time, chapter 1182 showed Saul reacting to Biblo knowing about the tunnels in the Owl's library, suggesting that there's a lot more to this ancient owl than we've been led to believe, with a popular theory even stating that it could be Louis Arnot.
5
How do Brook and Gunko know each other?
A strained relationship
As one of the most popular characters in the entire series, fans thought they already knew everything there was to know about Brook.
However, his familiarity with Gunko, whom he calls Princess Shuri, implies a deep and storied history between the two, evidenced by how Gunko still loves his music and yelled at Brook to run before Imu took him over. This is definitely one of the most interesting aspects of Elbaf that has yet to be answered.

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4
Where and what is Uranus?
The last ancient weapon
Ancient weapons are one of the One Piece's the oldest and greatest mysteries, with Pluto being first mentioned in the Alabasta arc. However, information about them has been sparse since then, but Pluton is known to be under Wano, while Poseidon is currently in Princess Shirahoshi of the Fishmen.
However, Uranus remains a complete mystery as to what he can do and what form he takes, with many fans believing it has something to do with Loki and his mysterious eyes.
3
Where is the man marked with flames?
The last missing character
The man marked by flames was a relevant mystery in the world One piecerevealed at the very end of the Wano arc as the man in possession of the final Road Poneglyph that Laugh Tale needed to find.
It's been a long time since he was last mentioned in the story, which is quite surprising since most fans expected to see him during Elbaf. A common theory was that Scopper was the true identity of this legendary pirate, but this now seems unlikely.

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2
Who was Davy Jones anyway?
A huge mystery
Fans have known for some time that there was some layered history between Joyboy and Imu, as the two were written as arch rivals during the Void Century. However, the Elbaf flashback threw a spanner in the works with the mention of the first king of the world, Davy Jones, whose name alone sent Ima into a frenzy.
It is clear that Davy Jones was extremely important and may have even shared an alliance with Joyboy, which may be why Imu and the Sky Dragons harbored such a visceral hatred for his clan all these centuries later.
1
What exactly happened in the void century?
The biggest mystery of the series
The Void Century is the most mysterious time in the entire world One piece the environment and the events that took place there set the stage for the world as we know it today. With mythical characters like Joyboy, Davy Jones and Imu, ancient weapons and God Fruit holders roaming around, this time is perhaps the most interesting aspect One Piece's world building.
Fans are desperate to know about the betrayals Imu faced, or Joyboy's role as the first pirate, or the world under Davy Jones, who was said to be the first king. All of these questions make this gap in history the most important in the story.
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