Supreme Grade weapons are the strongest blades made in the world by One Piece by some of the most talented individuals. Out of a total of 12 Supreme Grade Blades, only a handful have been revealed by Eiichiro Oda, the author of One Piece story. But with the descent of Saint Nerona Imu, the King of the World in Elbaph, Oda has finally revealed another supreme class to the fans, whose powers far surpass those of all others. Nerona Imu's unnamed Supreme Grade blade will surely have immense durability as well as the ability to absorb high levels of Supreme King Haki, which he channels at a very high level.
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Breaks down Nerona Imu's special spear-curved blade
Saint Nerona Imu, one of the first 20 monarchs and the creator of the world government, officially made her real appearance in One Piece chapter 1179. It was immediately clear to see that Imu used a bladed weapon. To be clear, Imu's weapon is more like a spear or a Naginata, and it's clear that he wields it with great skill. When most fans think of Supreme Grade weapons, they only think of swords; However, Whitebeard showed that blades do not necessarily have to be swords to be classified as top class. Whitebeard owned the world famous Naginata. Known by the name Murakumogiri, it is anything but a sword, but it still carries a gigantic blade and is classified as one of the 12 highest weapons.
Whitebeard's Murakumogiri was able to absorb incredible amounts of Supreme King Haki and allowed him to channel this power without worrying about the blade's durability. At the same time, it dealt extremely powerful blows to all his enemies and even allowed him to compete with the pirate king, Gol D. Roger's ace, also one of the highest class weapons. In terms of appearance, Whitebeard's Naginata is very similar to Imu's, and it only makes sense that Imu's weapons are top notch as well.
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Why the king of the world spear is a weapon of the highest class
That Imu kept a weapon at her disposal to engage in battle was a surprise to many fans, but the moment it was confirmed to be a bladed weapon, it became obvious that this would be a blade of the highest order. The reason for this is quite simple. Imu has a very trusted underling named Saint Ethanbaron V. Nasjuro, who is one of the five elders. Nasjuro has a top class weapon at his disposal, called the Shodai Kitetsu. This weapon was forged long ago and stands tall as one of the most powerful Supreme Grade swords in the One Piece world.
The Holy Land… I leave to you! —Imu, One Piece 1179
If Imu's henchman has a top tier weapon, it only makes sense for Imu himself to have a powerful top tier weapon as well. Furthermore, the comparison between his weapon and Whitebeard's absolutely cannot be ignored, and if Whitebeard's weapon is classified as a top grade, Imu's blade must also be top grade.
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Measure Imu's weapon strength against other top tier blades
The true powers of Imu's weapon have not been fully explored by Eiichiro Oda. However, considering that this weapon is used by the King of the World and was used by him in the battle against Joy Boy and the Ancient Kingdom about 800 years ago, it is a known fact that it has been forged through deadly battles and spilled blood, the likes of which no weapon has seen before. Imu's blade is clearly the strongest in the entire world. The only other blades that come close to it in terms of power would be the other Supreme Grade blades, especially Yoru.
However, Yoru is just a sword used by a mortal. Meanwhile, Imus naginata was wielded in battles against Joy Boy and is empowered by the Akuma no Mi he wields. After all, Imu's special weapon is much stronger than any other blade seen in the story, and its true capacity will be unleashed by Oda in the final saga.
One Piece chapter 1180 will be available to read on Manga Plus on April 19, 2026 at 11 a.m. EST.
One Piece
- Release date
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October 20, 1999
- Network
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Fuji TV
- Directors
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Hiroaki Miyamoto, Konosuke Uda, Junji Shimizu, Satoshi Itō, Munehisa Sakai, Katsumi Tokoro, Yutaka Nakajima, Yoshihiro Ueda, Kenichi Takeshita, Yoko Ikeda, Ryota Nakamura, Hiroyuki Kakudou, Takahiro Imamura, Toshihiro Ma Shihi Endo, Toshihiro Ma Shihi Endo, Kadota, Sumio Watanabe, Harume Kosaka, Yasuhiro Tanabe, Yukihiko Nakao, Keisuke Onishi, Junichi Fujise, Hiroyuki Satou
- Author
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Jin Tanaka, Akiko Inoue, Junki Takegami, Shinzo Fujita, Shouji Yonemura, Yoshiyuki Suga, Atsuhiro Tomioka, Hirohiko Uesaka, Michiru Shimada, Isao Murayama, Takuya Masumoto, Yoichi Takahashi, Momoka Toyoda
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Mayumi Tanaka
Monkey D. Luffy (voice)
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Kazuya Nakai
Roronoa Zoro (voice)