Opening: Devil Fruit can be upgraded

"I am officially introduced as Commodore Roger of the Navy Headquarters. Please give me your guidance!

Roger stood at attention and said seriously. He seemed to be afraid that his behavior would not conform to the Navy etiquette and would be misunderstood again.

"Are you a navy?" Xiu Zuo was stunned for a moment and questioned

"Yes, if you don't believe me, you can ask Commander Zefa."Rogge turned his head and looked at Zefa who was watching the show.

"Teacher?"

Xiuzuo and Binz turned to look at Zefa, who nodded, confirming Rogge's identity.

"I didn't expect you to find a new world."Zeffer came closer and looked at Rogge.

He had only glanced at Rogge's photo at the headquarters, so he didn't have a deep impression.

Now that Rogge mentioned it himself, Zeeffer remembered it.

"I don't think I have the right to refuse, Commander Zefa."Rogge said speechlessly.

Marshal Zhan Guo really didn't say that he could not come to see you!

But to Zefa, this sentence meant that Rogge cherished the opportunity to accept his guidance.

"In that case, you will be a member of the Pirate Guerrilla Force from now on." Zefa said calmly.

"Zero Hour team member?" Roger looked at Zefa in confusion.

"You are going to return to the headquarters sooner or later. Do you still want to be a formal member?"Zefa said coldly.

""Yes, sir!" Legrand replied.

"Well, starting tomorrow I will give you a year-long training in domineering. It's up to you how much you can learn."

"By the way, you can just call me instructor from now on. That’s what the students called me when I took office at the headquarters.

Zefa said and turned away.

At this time, Ain came forward.

"Come on, I'll take you to your place."

""Okay, okay, senior sister?" Roger asked tentatively.

But Ain reacted very coldly and had no intention of paying attention to Roger, so Roger thought that Ain didn't mind his address.

Zefa retired completely after Ain's class.

The reason was naturally because of the so-called Edward Weibel's attack, which resulted in the killing of all students except Ain and Binz.

His arm was also cut off.

Since then, Zefa no longer served as an instructor, and Roger, who was forcibly sent by Zhan Guo, was also made difficult by Zefa.

The next day, Roger spent an extremely dull life in the pirate guerrillas-that is, no one was willing to take the initiative to talk to Roger.

Whether it was a marine or a cadre, the look they gave Roger was dull and weird.

It seemed that Roger's existence was very unreasonable.

Despite this, Roger didn't care. He just came to learn domineering, and everything else was not within his consideration.

"How old are you this year?"

On the deck, Zefa began the first training of Rogge.

"Almost nineteen, instructor."Rogge replied

"Nineteen?"Zeffa glanced at Xiu Zuo next to him, with a suspicious look on his face.

He didn't understand why this nineteen-year-old youth could knock out a forty-year-old domineering man.

"Punch me with all your strength." Zefa ordered.

""All your strength?" Roger asked seriously.

"Yes, I want to test your Dao force. There is no testing machine here, so I can only test it myself."Zefa said

""Okay." After saying that, Rogge rushed forward and threw a simple straight punch.

The force of the fist pulled the air, driving the fist wind to appear, showing the extraordinary power of this punch.

But from the posture and preparation, Zefa was sure that Rogge did not use all his strength.

""Hey, kid, are you still worried that your power can hurt me? You are still far from mastering Haki."

Zefa thought to himself, and then predicted the direction of Rogue's attack with his Observation Haki, and then armed his body with advanced Armament Haki.

Bang!

Uh-huh!

Zefa was knocked out by a punch, but he quickly stabilized his body and stood upright on the deck. He seemed to be unharmed.

But the muffled groan just now revealed that Zefa was not so easy to take this move.

"What a powerful force!"

Zeffa took a deep breath and calmed down his breathing.

"You have this much power at your age."Zeffa walked back to his original position slowly, looked at Roger with a complicated expression and said

"Born, haha."Rogge laughed lightly and lied.

Born?

From Rogge, Zefa saw the shadow of Big Mom and Kaido, but fortunately Rogge is a navy.

So if you have to compare, Garp would be more suitable.

"You are a bit like that old guy Garp, young but incredibly powerful."Zeff praised

"You are too kind. How can I compare with Vice Admiral Garp?"Rogge said modestly.

"Without further ado, let me first tell you about the types and functions of Haki."

Then Zefa repeated what Roger already knew about Haki, but the difference was that Zefa had a lot of his own unique insights.

Especially in terms of Armament Haki.

After all, he was a man who once became a general with his physical skills - Black Arm Zefa.

After listening to Zefa's understanding of Armament Haki, Roger seemed to have opened up a new world.

"There are three differences between the armament colors.

The first is strength.

The strength of your domineering power depends on how much you compress your domineering power.

How much domineering power you can compress determines the strength of your domineering power.

In addition, the stronger your physique is, the higher the upper limit of your domineering power will be, because physique is the basis for storing domineering power.

However, this is not absolute.

For example, the giants, although they have strong physiques, are very special.

Their bodies cannot handle this kind of power at all.

"

"The second is the coverage. This range refers to the range of Haki that you can cover on your body. In simple terms, even if you have mastered Haki, it does not mean that you can use Armament Haki anywhere on your body. This requires your proficiency in Haki, that is, control."

"The third is quantity. This quantity involves storage capacity. The more storage capacity you have, the longer your dominance will last."

"The above three points complement each other, but as a beginner, what you need to do is to learn the skills to exercise Haki! As for the division of other application skills, I will explain it to you when you can store Haki."

Because he already mastered the Observation Haki, Roger directly asked Zefa to teach him the Arming Haki first. Arming Haki consumes time, while Observation Haki requires more talent.

So when Roger learns Observation Haki, he can fully demonstrate the ability he has mastered and attribute it to his talent.

And Zefa also said that he will only teach himself Haki for one year. Time is Haki proficiency! ps: Please give some free flowers to new readers to increase the author's motivation to write.