In One Piece, there is a professional role of a swordsman. Sauron is a great swordsman and second-in-command in the Straw Hat Pirates, but his combat power is infinitely close to Luffy. If one day the pirates of the straw hat regiment reach the summit, Solon will become a peerless swordsman and the biggest swordsman in the world without losing his eagle eye.

But the swordsman is good, but it is too hard. After all, becoming a swordsman requires not only fencing but also body skills, both of which are indispensable. It can be said that persistent people can go further on kendo. But with the shortcut of the devil's fruit, many ordinary strong people gave up kendo and became the devil's fruit capable people. Otherwise, you'll be an Excalibur. Where there is an eagle eye, there is an eagle eye to make big money.

Red dog was a strong man when he was young, with a sword on his back. However, if you become a person with the ability of magma fruit, you don't have to practice sword so hard. Fingers can release Conan's magma ability. Red dog is also very smart in kendo and magic fruit ability, so he gave up kendo and learned magic fruit ability instead.

Compared with the red dog who completely gave up the kendo ability, Qing Xuan, as a demon fruit ability, occasionally picked up his own kendo to use. However, Qinglan's sword is made by his ability to freeze fruits. He used the power of demon fruit and his sword. If you dig deeper, Qing Xuan can be regarded as abandoning kendo and practicing magic fruit ability.

Similarly, General Kprusoian gave up kendo. Generally speaking, he used the ability to soak fruit. Only when you meet a fencing master will you take out his sword and use it. This is a lightsaber, a sword made of devil fruit. If you can spell a sword, Kprusoian's kendo can play two tricks with Hades Reilly.

Not only the general level of the strong abandon kendo, but also the strong above the Four Emperors abandon kendo. The Golden Lion, one of the legendary three thieves, is the owner of two famous knives. He is a double-edged sword. He dared to break into the naval headquarters alone and fight side by side with the Warring States and Karp. Unfortunately, my leg was broken later, so I used two famous knives instead of my leg, and I used the ability of fluttering fruit. Without a knife, the strength of the Golden Lion is greatly reduced, and even Luffy can't win.

Pirates recruited later are often more powerful. The female emperor is probably also a strong general. She used to be an expert in using knives. But the ability of sweet fruit is better, so the female emperor gave up kendo and developed sweet fruit instead. The reason why the female emperor has the strength of a general is that the spies in the general will be defeated by the female emperor one by one. This must be the strength of a general.