One Piece: Starting with Creating the Strongest Character Design

Kitahara Tsune was almost certain that while he was fighting Zephyr, the video Den Den Mushi above the training ground had recorded every move of their battle.

Sengoku, Garp, and Vice Admiral Tsuru must have been watching every detail of this battle to assess his strength and potential.

"It's not the most ideal situation, but it's not far off," Kitahara Tsune thought.

In this context, showcasing his domineering cultivation is also a good option.

After all, the top naval officers are basically all paying attention to this place.

The recognition provided by those individuals, in terms of quality alone, is absolutely top-notch.

He immediately stopped hesitating.

A jet-black Armament Haki instantly wrapped around his forearm.

"It's alright, barely enough to enter the new world."

Zephyr saw Kitahara Tsune's Armament Haki and said.

"Then let me test the strength of this Armament Haki."

However, before Zephyr could attack Kitahara Tsune, Kitahara Tsune's figure had already appeared in front of Zephyr with lightning speed.

The black Armament Haki combined with the iron blocks on his hands for reinforcement.

He stabbed directly at Zefa's heart.

"Their use of Armament Haki is quite skillful, and they can even combine it with Iron Body. Not a bad idea."

Zephyr neither dodged nor avoided the attack. Since the purpose was to test Kitahara Tsune's Armament Haki, it was natural for him to make contact with him.

Just as Kitahara Tsune's arm was about to touch Zephyr's body...

A jet-black iron wrist had already gripped Kitahara Tsune's arm and was pulling him violently toward itself.

At the same time, Zephyr had already gathered power in his other hand and slammed it down on Kitahara Tsune.

Kitahara Tsune's eyes narrowed slightly, and he suddenly exerted force with his right hand, breaking free from the arm that was gripping him.

At the same time, he lightly stepped on the air with his toes and leaped towards Zefa's head.

Just as he passed over Zephyr's head, Kitahara Tsune's feet suddenly turned black, and Armament Haki was already wrapped around his right foot.

The next instant, the kick was aimed straight at Zefa's head.

At that moment, even Zephyr felt a sense of danger rising in his heart.

If that kick had actually landed on Zeffa, it might have seriously injured him.

Zefa suddenly turned around and swung his right arm directly upwards and to the right.

However, this seemingly sure-fire strike has now missed its mark!

Zefa was slightly taken aback, already knowing what was going on.

"Well, kid, I didn't even use Observation Haki, but you've already done it."

Just as Kitahara Tsune was about to use a kick to attack Zephyr's head.

His various attributes provide an alarming level of awareness of danger and a keen sense of timing!

Without the slightest hesitation, Moonwalk·Airstep·Kick was unleashed instantly.

The next second, he instantly appeared in Zephyr's blind spot.

In that instant, the sound of Zephaniah swinging his right arm cut through the air rang in his ears.

Kitahara Tsune had no doubt that if this attack hit him, even with his physical abilities, plus the defenses of Armament Haki and Iron Body, he would inevitably lose his fighting ability directly.

Zephyr's power has been controlled at the brigadier general level.

However, his Armament Haki would not be weakened in the slightest by Zephyr controlling his power; it would remain at the same level of strength.

It can at most limit the attacks of Armament Haki, and won't hurt yourself.

"Now is the best time to attack!"

With the added bonuses from his stats, Kitahara Tsune seized this fleeting opportunity to attack.

He clenched his fists and placed them lightly on Zephyr's waist. The Armament Haki on his forearms was already at its maximum, and all his strength was concentrated in his fists.

"Secret Technique: Six Kings Spear!"

The next moment, a powerful penetrating force passed directly through Zephyr's body.

Behind Zephyr's body, Ain and Binz could still see the obvious explosive blast.

Boom!!

Almost instantly, a huge crater appeared in the ground beneath Zefa's feet.

That was merely the aftershock of Zephyr's body resisting the Six Kings Spear!

Looking back, a large hole had been blasted into the wall of the training room not far from Zefa.

"Cough cough..."

The area was completely silent, save for the soft cough of Zefa that echoed through the training ground.

Ian and Binz stared wide-eyed.

They never imagined that what was merely a friendly sparring match would actually be a complete and utter defeat of a general against a brigadier general.

Kitahara Tsune actually managed to make the general cough up blood!

Zefa coughed lightly twice and spat out a mouthful of blood.

Now, Zephyr's gaze toward Kitahara Tsune has changed from admiration to astonishment.

He didn't care about his injuries at all.

What truly surprised him was that the attack just now had actually penetrated his body with Armament Haki.

This is no longer ordinary Armament Haki.

This is the highest level of Armament Haki application!

"Could this kid have already mastered the internal destruction techniques of Armament Haki?"

But whether it was Zephyr, Garp, Vice Admiral Tsuru, or Sengoku, the same thought flashed through their minds.

As one of the top users of Armament Haki, Zephyr was well aware of how many ways Armament Haki could be used.

He was thoroughly familiar with everything, from basic winding and hardening to flow and outward release, and even the most complex internal destruction.

But he had never seen anyone like Kitahara Tsune.

Even without mastering the binding and hardening techniques, he was already able to inject Armament Haki into others' bodies.

"Hey kid, how long have you been practicing your domineering cultivation?"

Kitahara Tsune pondered for a moment, then spoke.

"I have been cultivating on and off for about a year and a half, and in the last few months, my domineering cultivation has finally gotten on the right track."

Kitahara Tsune spoke, a hint of shame showing on his face.

"This practice is much more complicated than I imagined, and it's also the one where I've progressed the slowest."

Upon hearing this, both Zephyr and Sengoku and Garp, who were watching the two fight from the Marshal's office, fell silent.

Is it really that slow to cultivate one's domineering aura to this level in just a year and a half?

Even Zephyr, known for his black arms, spent a full 20 years training Armament Haki to his current level.

This boy, who is only sixteen or seventeen years old, is already close to mastering the ultimate secrets of Armament Haki.

He even said his spiritual practice was slow?!

Kitahara Tsune was absolutely right.

Compared to other aspects, his cultivation of domineering aura was the slowest.

Since joining CP9, he has consistently completed tasks and accumulated merits.

After accumulating merits for nearly a year and a half, he exchanged them all for information on cultivation techniques related to domineering aura.

What followed was a year of solitary exploration and cultivation of domineering power.

Only Kitahara Tsuneo himself knows the ups and downs that happened.

Without relevant entries, progress is extremely slow.