Opening: Devil Fruit can be upgraded

The next day, Roger and Colonel Kerry learned the Six Forms

"I only mastered the shaving and finger gun among the six styles, so if you want to learn the other six styles, you can only do so after you go to the headquarters."

At the naval training ground, Kerry said to Rogge seriously.

"Well, I am already very satisfied that I can learn two of the six moves in advance."Rogge nodded.

"Then I will learn to shave first. Shaving requires a person to step on the ground at high speed dozens of times in a flash to generate explosive reaction force to move at high speed, thus reaching an extremely fast speed. This flash is estimated to be within 0.36 seconds."

Within 0.36 seconds?

Rogge wondered if he could achieve this level with his agility.

"Of course, although shaving increases a person's instantaneous speed, the disadvantage is also obvious, that is, it is too straight!"

Kerry played the role of a teacher seriously.

"So learning to shave is not just about learning to stomp dozens of times in an instant. That is just the beginning. To truly master shaving and apply it in actual combat, you need to have good judgment.���Control over the body and the scene"

"Because the speed of shaving is so fast, it is very likely that you will touch the attack position of other people's swords and guns and you will not be able to react!"

"Ahem, talking more won't be as effective as practicing. Next, I'll demonstrate how to use the shave."

After saying that, Kerry disappeared from Rogue's sight in an instant. If Rogue hadn't mastered Observation Haki, this speed would be enough to hit him before he could react.

Pa!

Kerry appeared behind Rogue and put his hand on his shoulder.

In fact, Rogue could have dodged it, but Rogue gave up because he couldn't reveal the fact that he knew Observation Haki. After all, Observation Haki is not Overlord Haki, nor is it a Devil Fruit, and the source of his learning would definitely be suspected by the higher-ups.

If the headquarters found out about Koshiro's connection with the Revolutionary Army because of this, he would probably not be able to become a marine.

"I was a little too fast just now, but there was no other way. This is the inevitable requirement of shaving.

Seeing that Roger didn't respond, Kerry thought Roger was still in a daze, so he explained.

"Okay, you try it next."

Roger nodded, then walked away and tried to control his body to do as Kerry said.

"Shave!"

With a silent thought, Rogge's feet stomped quickly, and then... the cement floor under Rogge's feet was stomped down by Rogge.

"……"

It seems different from what I imagined~

"You used too much force. Although the use of shaving depends on the hardness of the ground, with the force you just used, you can't use shaving even if you are fighting on a steel ground."Kerry pointed out Rogge's problem.

Rogge thought about it and realized that it was true.

His control of strength was too poor. This would not only waste physical strength in the battle, but also make his body uncoordinated and unable to exert the power of his body.

Coordinating and controlling the body is one of the reasons why Rogge practiced the six styles.

"Shave!"

After realizing his mistake, Rogge immediately tried to control his strength and tried to use 'Shave' again and again.

After dozens of times, Rogge finally made a successful displacement on the ordinary ground, but this time, Rogge flew out of the Navy Branch Training Grounds and crashed through the wall.

"Well, I'll compensate you for all the money I've earned during this time."

Roger thought to himself as he flew out and crashed into the wall.

PS: I'm a bit stuck, so the update is slow. Please understand, readers.

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