This article contains spoilers from One Piece's Elbaf Arc.
One piece is currently in the Elbaf arc where Oda is paying close attention to many energy systems One piece world. Regarding the Devil Fruits, Oda specifically highlighted two that are absolutely necessary to defeat Imu and take over the world government. As for Haki, fans have seen Oda place great importance on the Conqueror's Haki, especially when it comes to damaging the Immortals of the world.
However, neither of these two powers is the ultimate ability in the world One piece. It goes without saying that Devil Fruits and Haki are very powerful, but Oda has already revealed the strongest power in One piece world and stems directly from science itself. This power is ancient weapon technologyand Oda is about to reveal his full power with the Ancient Weapon Uranus.
Oda is about to reveal the ultimate ancient weapon
Ancient weapons are incredibly powerful tools that exist in the world of One Piece and were created long ago during the Void Century. These weapons were specifically created by an ancient kingdom that had tremendous scientific abilities. The first ancient weapon that fans were introduced to was the Plutonall the way in Arabasta. It was said to be a giant warship capable of vaporizing an entire island with a single shot.
Why did Joy Boy want to hand over these ancient weapons? I can't say who was right or wrong. — Vegapunk to the world in the Egghead arc
After the timeskip, Oda revealed Poseidon fans who can control the Sea Kings and sink the whole world. Finally, there is Uranus. This ancient weapon is incredibly powerful and unlike the other two, it works from the sky. It is powered by Motherflamecreated during the Void Century and recreated by Dr. Vegapunk. With such power, Uranus can instantly destroy any country.
Oda has yet to show fans the Uranus Ancient Weapon in full, but it's only a matter of time before he does. One Piece is in the Final Saga, and more importantly, it should be noted that the World Government now has vegapunk on its side. in other words Motherflame and Ancient Weapon Uranus is officially active.
The ancient weapon Uranus has already been teased
Fans have already seen the power of Ancient Weapon Uranus in One piece. It is the exact same weapon that Imu used to wipe out the kingdom of Lulusia. But that was just a glimpse of what he could do. First, Oda clarified that Vegapunk only sent a small portion of the Motherflame to the World Government to activate Uranus. Secondly, Vegapunk can now make a ton of Motherflame for Imawhich means the real terror of the weapon is about to be unleashed. Oda hasn't fully revealed Uranus yet, but after the events of Elbaf, he should be fully revealed.
What light will now be erased from the world, Great Imu? — The five elder Imu during the Reverie arc
Science is the strongest force in one piece
Vision the power of ancient weaponsit's hard to believe Haki or Devil Fruit can be compared at all. They are certainly very powerful, but they don't hold a candle to what science can do with ancient weapons. Uranus and Pluto can destroy islands and sink lands. They have enough power to destroy the world.
At this point, it would be safe to say that the strongest ability in One piece is power to wield ancient weapons. In other words, the science that Oda had given tons of exciting importance to in the Final Saga would be even greater than ever before, and those who could master it would officially be considered some of the most powerful in the seas. It's only a matter of time before Oda fully reveals his absolute maximum power.
This puts special emphasis on characters like Shirahoshi and even Momonosuke, under whose command Pluton can be unleashed upon the world. Then there is also Imu, which most certainly has access to Uranus. Of course, Luffy is right in the middle of it all as the new Joy Boy. Since the previous Joy Boy passed on ancient weapons, it stands to reason that Luffy will be deeply involved with them as well. Things are going to be more exciting and dangerous than ever in One Piece.
Eiichiro Oda's One Piece will be featured in the Weekly Shonen Jump Issue this week. In Japan, One Piece drops Monday at 12pm JST. The official release date of One Piece Chapter 1166 is November 23, 2025. Fans can read the chapter for free on Manga Plus and Shonen Jump apps.
