Opening: Devil Fruit can be upgraded

The next day, Ain woke up from Rogge's bed.

"Hmm~"

He rubbed his sleepy eyes subconsciously, and then looked at the sunlight coming in through the window.

"It's morning, time to get up... No!"

"This is not my room!"

"Last night... the sniper rifle... the pillow under the quilt... I was knocked unconscious!!"

Remembering the cause and effect, Ain suddenly got up from the bed, muttering to herself

"Damn you, Roger, you will never be able to change back in your life.……"

Walking out of Rogge's room, he bumped into Binz head-on.

""Ai... Ain?"

Binz subconsciously glanced at the house number 0-4 - it was Rogge's house!

But Rogge was obviously training on the deck, why did Ain enter his house when Rogge was not there?

"Ain you……"

"Go away!"

Ain was in no mood to pay attention to Binz, and turned around and headed towards the location of Roger that his observation Haki had sensed.

"……"

"Forget it, it's none of my business anyway." Binz spread his hands and said with a look of annoyance.

Soon... on the deck

"Rogge!"

Rogge, who was training his Armament Color daily, turned around and saw Ain coming aggressively.

"Good morning, sister."

"Good morning? You dared last night……"

Halfway through her words, Ain realized that she was the first to break into Rogge's room.

Rogge was not at fault even if he knocked her out?!

"Last night? What happened last night?"

Rogge asked in confusion, then thanked him.

"By the way, thank you, Senior Sister, for helping me recover last night."

"……You!"

Ain looked at Rogge, who was smiling harmlessly, and was so angry that she couldn't even speak.

"Despicable!"

After saying this angrily, Ain ran away, leaving Roger alone with a faint smile on his face.

""Heh~ Miss."

After saying something incomprehensible, Rogue continued to train.

He had a feeling that his Armament Haki would soon be able to enter the next stage of entanglement training.

A month passed quickly...

During this month, Ain did not bother Rogue again, and Zefa did not find anything to teach Rogue to learn Observation Haki.

Rogue was also happy to be free and concentrate on training Armament Haki.

On this day, Rogue trained as usual.

"Armament Haki. Hardening!"

Bang!

With a simple punch, Rogge punched through the steel prop man that the logistics staff had prepared for him.

"Judging from this power, I should be able to learn how to entangle. Once I learn how to entangle, I can use the snow to move them better."

Rogge thought to himself, and then turned and entered the cabin.

He planned to find Zefa to learn the next part of Armament Color.

Boom boom boom!

"Please come in."

Rogge responded and entered the office. Zefa was working at this time.

Although Zefa is no longer a normal organization in the navy, Zefa still retains this strange habit.

"teacher"

"Oh! It's Roger. What's the matter with you?" Zefa closed the file subconsciously and asked

"It's like this, I feel that my Armament Haki has reached a certain level, and I should be able to learn entanglement. I hope you can know my"

"Armament Haki? Aren't you learning Observation Haki from Ain?" Zephyr asked in confusion.

"Well, I have learned the observation Haki. Senior Sister Ain taught me very well.

In order to learn the armament Haki better and more attentively, he must reveal his observation Haki.

"So fast? ?"Zeffa asked incredulously

"Yes, in fact, I may have known it before, but I didn’t know what kind of power it was until Senior Sister Ain told me about it. Then I knew it."

Rogge explained

""Did you know it before?"

Zefa was stunned for a moment, but when he thought about the special nature of Observation Haki, he thought it was possible.

Unlike Armament Haki, which must be learned through training, Observation Haki can be learned through talent awakening even without training.

"Then I will test your ability."

Zeffar said as he took out a pistol and shot at Roger.

Roger just turned his head and dodged the bullet.

Bang! Bang! Bang!

He tried a few more shots, and Roger dodged the bullets with the smallest movement.

Zeeffar nodded, acknowledging Roger's observation Haki.

"Your level of mastery of Observation Haki is very good, but Observation Haki is far more than that. It is said that the highest level of Observation Haki can predict the future. This will be the direction of your future Observation Haki progress."

"Haha~ You really think highly of me. I only know that Katakuri has this ability, and he can only predict a few seconds."

Roger thought so in his heart, but on the surface he said he would understand.

"I understand, teacher."

"Well, but this is just a direction for the advancement of observation Haki. Few people have been able to do it since ancient times. If you can't do it, don't force it."

Zeffa was worried that Roger would be stubborn, so he added.

But Roger knew his own weight, so he would not be so stubborn.

"Okay, teacher. Then what about the armed color entanglement?……"Roger looked at Zefa hopefully and asked

"Um... do you still remember the steps I told you about hardening your Armament Haki?" Zefa asked

"I know, I can guide the energy of the armed color to attach to the surface of my skin."Rogge nodded.

"That's right, guidance, Armament Haki is the energy inside the body. It can be attached to the inside of the body or to the outside of the body, but most people cannot attach it to the outside. Do you know why?"

"Why?" Roger asked

"Because the control over guidance is too poor, and there are many complex structures in the human body, in order to attach Haki into the body, you not only need to master the profound Observation Haki, but also need you to be able to control the compressed Armament Haki energy to flow accurately in the body!"

"The same is true for entanglement, but compared to attaching domineering aura to the body,���Winding is relatively simple. Because winding is to attach the Armament Color to the surface of an object outside the body, that is, you don't need to control the Armament Color energy to flow in a complex environment."

"But this is only compared to the hardening of the internal armament color, so entanglement is a more advanced skill than the skin hardening you have mastered."

"So how is entanglement achieved?"After listening to this long passage, Roger felt a little confused.

"Ahem, it's very simple. Direct the Armament Haki energy to the skin, and then try to direct the Armament Haki energy on the skin to the object. Then treat the object as a part of your skin and continue to direct the energy to harden it."

P.S.: The author is not feeling well today... I slept for a long time, but I will still finish the chapters that should be updated today. I will start by refusing to stop updating...