"Rosen."
"You come with me."
After calling Yamakaji to substitute for the class, Zephyr immediately called Rosen and followed him out of the classroom and into a room filled with several instruments similar to wooden dummies, but made of steel.
"This is an instrument made by the leader of the Naval Science Unit, Vegapunk, for testing the value of combat force."
"The upper limit is 10,000."
"With it, students can clearly see their own progress in the early stages."
Zephyr pointed at a combat force device:
"Now all you have to do is use your Haki and hit the Combat Force Device with all your strength."
He folded his arms across his chest and looked at Rosen.
"Good."
Upon hearing this, Rosen immediately poured his consciousness into his Haki and wrapped all the Armament Haki in his body around his right arm, hardening his fist and forearm together.
Then, he rushed forward, his spine like a bowstring and his fist like a sharp arrow, and struck out fiercely.
Bang.
As the fist hit the Combat Force Device, a string of numbers suddenly jumped out on a small display screen on it.
260.
"Not bad. According to the World Government, if you learn the Rokushiki and your combat force exceeds 500, you will become a 'superhuman'."
"You lack offensive physical skills now, but with the newly awakened Armament Haki, you can still strike out 260 combat forces in one blow, which is equivalent to half a superhuman."
"By the way, a well-trained Marine only has a combat force of about 10 when picking up a weapon."
Zephyr explained the value of 260 combat forces.
"Do you understand?"
"This is the power and value of Haki."
Zephyr said with a serious face.
Obviously.
The purpose of letting Rosen throw this punch was to make Rosen understand the importance of Haki.
"I understand, Instructor Zephyr."
Rosen nodded.
Without Zephyr telling him, he already knew the importance of Haki.
After Zephyr's personal demonstration, he felt the value of Haki even more deeply.
He was someone who didn't even know the Rokushiki, but with just newly awakened Armament Haki and relying on the absolute control from Haki Ultimate Intention, he was able to blast out half of a superhuman's combat force.
This is Armament Haki.
"If I use Senbonzakura and wrap the Armament Haki around it, I wonder how much power it will have?"
At this moment, an idea came to Rosen's mind.
Make Senbonzakura with your hands, and then apply the Armament Haki.
This is the correct way to unlock the fruit's ability.
"That's good to know."
"So."
"One more thing."
Zephyr loosened his hands that were clasped in front of his chest, then clenched his five fingers, and hardened his Armament Haki. His fist was like a black cannonball, and he punched out.
Bang.
The air in front of the fist seemed to be compressed to the extreme, and then it couldn't bear the weight and exploded.
Snap.
A materialized impact of Haki burst out from his fist and hit the Combat Force Device through the air, directly turning the device with an upper limit of 10,000 into a discus.
"Do you understand?"
Zephyr turned his head and looked at Rosen.
"Emission?"
Rosen's eyes lit up, but his heart was very calm.
With his extraordinary understanding, the moment he comprehended Haki Ultimate Intention, he was able to control Armament Haki at will.
That is to say—
Hardening, Imbuement, Emission and Internal Destruction.
He could use these four techniques after seeing them once, and even, with a little practice on his own, he could use them proficiently in just a few minutes.
This is the value of Haki Ultimate Intention.
Just as Seimei Kikan (Life Return) can control the body at will, Rosen can also control Armament Haki at will and use various techniques by infusing his consciousness into Haki.
"Good."
"It's just an Emission."
"This is also the third technique of using Armament Haki that I want to teach you."
Zephyr nodded first, but then shook his head immediately:
"But that's not all."
"Take a look at the Combat Force Device."
"Apart from the technique of Emission, what is the difference between my punch and yours?"
He looked at Rosen with burning eyes.
"There are different techniques of Armament Haki, but they represent skill, not strength."
Rosen's mind raced, and he immediately understood the point Zephyr wanted him to grasp.
"Good."
"In addition to Hardening and Emission, Armament Haki also has the technique of Internal Destruction. But even if you learn all four techniques, it only means that your Armament Haki can be used in multiple ways."
"It's like a sword. You can chop, stab, or pick. But no matter how you use it, the hardness and sharpness of the sword itself remain unchanged."
Zephyr's eyes flashed with satisfaction:
"Don't be superstitious about the techniques of Armament Haki. You should focus on improving the strength of your Haki."
"Take you and me for example. Even if you use four kinds of Armament Haki techniques, I can still kill you instantly with just the most basic Hardening."
"This is the difference in the quality of our Armament Haki, which cannot be made up by any technique."
He spoke word by word.
"I'll keep your advice in mind."
"Instructor Zephyr."
Rosen nodded seriously.
He agreed with Zephyr's statement.
Luffy is the best example.
The Observation Haki can Future vision.
Armament Haki can harden, Imbue, release externally, and destroy internally.
The Conqueror's Haki can also achieve Infusion.
In the end, he still couldn't beat Kaido.
In the final analysis, apart from the difference in physique, the most important thing is the difference in the strength of Haki.
In terms of skill, Luffy had caught up with Kaido, but he had not caught up in the quality of his Haki.
"Go ahead."
"First, master the Emission, and then I will teach you Internal Destruction."
"Once you have mastered all four techniques of using Armament Haki, I will teach you how to increase the strength of your Armament Haki."
Zephyr was just about to explain the techniques and learning tips of Emission, but he didn't expect Rosen to just raise his hand and extend it.
Whoosh.
Along with a whistling sound that broke through the air, a Haki shock wave burst out from his fingertips and hit a Combat Force Device not far away.
Of course.
He didn't destroy the Combat Force Device from a distance like Zephyr did; he just hit a combat force value of 260.
"Really."
"Just like what Instructor Zephyr said, the technique of Armament Haki does not equal strength."
"Whether you use Hardening or Emission, the combat force value you get is the same."
When Rosen saw this scene, he couldn't help but sigh that it was good to have a famous teacher to guide him, and there was no possibility of taking a detour.
"You, have you learned how to Emission?"
Zephyr's eyes widened in shock.
As a former Admiral of the navy, he knew very well that although both were techniques for using Armament Haki, the Emission was much more difficult to learn than Hardening.
But he had only thrown one punch, and the student in front of him had already mastered it, and he used it without any awkwardness. Instead, it gave people the feeling that he had been immersed in it for many years.
"I have learned it."
Rosen nodded.
"It's not just about Emission."
"Even the Internal Destruction you just mentioned, Instructor Zephyr."
"I learned it too."
Without waiting for Zephyr to speak, he said something shocking again.
"Impossible."
As soon as Zephyr finished speaking, he heard a sound of metal breaking not far away.
Snap.
He turned his head and saw that the Combat Force Device that Rosen had just attacked from a distance with his Armament Haki was actually making cracking sounds inside. At the same time, the number 260 on the display was becoming blurred and finally disappeared.
"Internal Destruction?"
"I have never used it in front of you!"
"How did you do that?"
Zephyr murmured.
Hardening, Imbuement, Emission and Internal Destruction.
In just one class, Rosen had learned all four techniques of Armament Haki.
Especially the most advanced Armament Haki technique, Internal Destruction, which he actually figured out on his own.