Article summary:
It is not Haki. It is not a Devil Fruit. It is an innate gift that only a handful of individuals in history possess: the Voice of All Things. It allows its users to hear ancient creatures and even inanimate objects such as the Poneglyphs. In 2026, we know that without this power, it is impossible to reach Laugh Tale.
Gol D. Roger had it. Kozuki Oden had it. Momonosuke has it. And of course, Monkey D. Luffy awakened it. That is what sets a great pirate apart from the future King.

They hear what no one else can perceive.
Difference from Observation Haki
This gift should not be confused with Observation Haki. Haki allows users to sense presences or emotions. The Voice of All Things allows them to communicate and understand an ancient language.
That is how Roger was able to "hear" the Poneglyphs even before he had Oden to translate them. He knew they told a "great story."
The connection with Zunesha and the Sea Kings
The two most powerful manifestations of this gift took place:
- Under the ocean, when Roger and Luffy heard the Sea Kings speak about the birth of Poseidon (Shirahoshi).
- On Zou, when Momonosuke and Luffy heard the distress of Zunesha.

Only someone who can command (like Momo) or make a promise (like Luffy/Joy Boy) can change the world. It is an essential condition for activating the ancient weapons.
To learn more about these legendary creatures, visit our pillar page Treasures and Secrets.
The Giant Robot of Egghead
Recently, Luffy heard the Giant Robot apologize to Joy Boy. The Voice of All Things transcends time. It connects the present to the Void Century.
This proves that objects have a "soul" in One Piece, a concept (the Klabautermann) that Franky and Usopp know well.

Conclusion: The key to the kingdom
Without this voice, the One Piece would remain undiscoverable. Luffy is indeed the chosen one, not because of destiny, but because of his ability to listen to the world.
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