One Piece: Starting with Breathing Techniques

As night deepened, Kilo walked along the moonlit street, holding the Dragon Slayer in his hands, and began to contemplate its power.

After he mastered the first move of the Dragon Slayer Sword Manual, the Dragon Slayer Sword in his hand suddenly resonated with him in a peculiar way.

This resonance was so peculiar that it reminded Kiro of the Nichirin Blade from the Demon Slayer world.

The Nichirin Blade is a special weapon used by members of the Demon Slayer Corps to slay demons.

The moment the wielder first grasps the sword, the Nichirin Blade changes its blade color according to the user's characteristics, symbolizing the "bond between sword and master," an extension of the demon-slaying swordsman's belief.

Just now, the resonance of the Dragon Slayer made him feel somewhat similar, but not exactly the same.

The difference lies in...

The dragon-slaying creature seems to possess more spirituality?

After reaching a secluded and deserted beach, Kilo will unsheathe the dragon-slaying sword.

The long, sharp blade shone white in the moonlight, exuding a subtle sense of sharpness.

Kilo held the Dragon Slayer as if it were not a weapon, but an extension of his limbs, as if it were his own arm.

As Kilo made a thought, the straight, thin sword, as thin as a cicada's wing, began to emit a series of sword cries.

"What a fine sword!"

Kilo's eyes lit up with joy as he eagerly experienced the dragon-slaying technique.

The blade hummed, producing a barely perceptible whooshing sound as it was swung.

Kiro raised an eyebrow; the sharpness of the Dragon Slayer seemed to exceed his expectations.

He casually picked up a stone from the ground, tossed it high into the air, and then slashed it with a flick of his wrist.

call out!

The stone, easily split in two, fell to the ground, revealing a smooth, mirror-like cut surface.

hiss!

Kilo examined the still-sharp blade with a hint of excitement.

He had never used such a sharp sword before, and it seemed to have a subtle connection with him, making it even more responsive than the Nichirin Blade he had used for so long.

With a practiced flourish, Kiro smoothly sheathed the Dragon Slayer sword, his eyes filled with satisfaction.

The power of the Dragon Slayer is undeniable; it is far superior to Frosven's two previous swords.

As expected of the Great Sword!

After calming down a bit, Kiro took off his shirt, revealing a muscular and well-defined physique.

His current physical abilities are already beginning to rival Kiro's physique in the Demon Slayer world.

Although the original body that Kiro transmigrated into was just a scholar who couldn't even kill a chicken.

However, many people in the world of One Piece possess extremely terrifying physical potential.

With diligent training, one can become a powerful individual capable of shattering rocks with a single punch and easily breaking trees.

Kiro remembered that in the original story, even the New World soldiers could easily smash a cliff with a single punch.

In the Dressrosa arc, the Marines Zoro encountered in the Birdcage were all equipped with Armament Haki; they were practically superhumans.

Therefore, with his powerful physical potential, Kiro strengthened his originally weak physique through breathing exercises.

The transformed Thunder Breathing - Normal state also helped him temper his body and become stronger.

In addition, when Kilo was practicing the Breath of Wind and Thunder, his proficiency panel also increased significantly, boosting his physical attributes.

Clenching his fist, Kilo felt a reassuring sense of power and grinned.

Now, he no longer needs to be hesitant when using Sun Breathing.

Suddenly, as if remembering something, Kiro flipped open the panel.

[Proficiency Panel]

【Name: Kiro】

Age: 12

[Current Skills: Dragon Slayer Sword Manual (First Form, Beginner), Sun Breathing (Perfect), Gale Breath (Proficient), Heavenly Thunder Strike (Proficient), Markings (Beginner)...]

Current points: 1

[Upgrade] [Deduction]

Looking at the skill bar for [Heavenly Thunder Strike], Kiro slapped his forehead.

"I almost forgot about that!"

When he first deduced the Heavenly Thunder Movement, he couldn't conveniently test its effects, so he kept putting it off until now.

After confirming that no one was around and that it would not affect ordinary residents, Kilo found an open, flat area.

The clear moonlight shone on his handsome face. He took a deep breath and silently activated the Heavenly Thunder Movement in his heart.

laugh.

In an instant, he suddenly felt his body lighten, as if a part of his weight had been sucked away out of thin air, and a sense of speed surged into his heart.

Countless arcs of electricity suddenly appeared out of thin air around him, pulsating as if they were alive.

Kilo sensed something, stomped his foot hard, creating a circular crater in the sand, his figure blurred, and dashed forward.

Initially, with the [Extreme Speed] effect from the Breath of the Gale, Kiro thought he was fast enough, but now...

Kilo's figure transformed into a blurry afterimage, leaving dazzling flashes of electricity wherever he went, with countless arcs of electricity leaping and dancing along the path.

The surrounding scenery blurred, and everything in front of me rushed past my vision, with the howling wind whistling past my ears.

A strong wind blew in his face, causing Kilo to squint slightly.

A moment later, Kilo released the Heavenly Thunderclap, stopped, and breathed heavily.

The Heavenly Thunder Strike was more physically demanding than he had imagined.

But as for the results...

Kilo turned around, raised an eyebrow, and found that the place where they had just started was now so small that it was barely visible, at least a thousand meters away.

His test had only lasted about ten seconds.

In other words...

Kiro frowned, silently calculating in his mind, and came to a terrifying conclusion.

His speed just now was probably close to 100 meters per second.

What does this mean?

One of the Six Styles of the Navy, the famous "Shave", is a technique that generates a speed of over 100 meters per second by stomping the ground dozens of times in an instant.

However, when Kilo activates the Heavenly Thunder Movement, what he possesses is a continuous burst of speed!

But "shaving" is just a momentary burst of energy!

This means that in actual combat, Kilo can continuously fight at a speed that is difficult for the naked eye to perceive!

However, there are countless stronger beings in the New World who are even faster than that.

However, for Kilo, who had not yet embarked on the Grand Line, the power of Tenrai-dong was already enough to satisfy him.

If we say that Kiro is able to be a few points faster than his opponent in actual combat thanks to the [Extreme Speed] effect brought by the Gale Breath, then...

Now, Kiro is confident that if he encounters those five pirates again, he can finish the fight in an instant!

At the extreme speed difference, no technique or ability matters.

Just like Kizaru in the Sabaody Archipelago, when facing supernovas who couldn't keep up with his speed at all, he basically kicked them one by one.

As his slightly disordered breathing gradually calmed down, Kiro took out the "Dragon Slayer Sword Manual" from his backpack and began to read it carefully.

The ancient book records the Dragon Slayer style swordsmanship passed down by the swordsman Ryoma, which includes a portion of the [Dragon Slayer Technique] that Kiro had just mastered.

The sword manual is not just a collection of sword techniques, but also includes Ryoma's insights into the way of the sword. Many of his unique perspectives impressed Kiro and deepened his understanding of the way of the sword.

After roughly flipping through the sword manual, Kiro reluctantly closed the book and opened the panel.

New skill discovered: Dragon Slayer Sword Manual

Have you studied to the beginner level?

[Requires 100 points] (Currently 1 points remaining)

"hiss!"

So expensive!

Kiro gasped, but considering this was the legacy of "Sword God" Ryoma, he could understand.

After sorting through his recent finds, Kilo bent down and sat on the quiet beach.

The sound of continuous waves came from the sea, and the shimmering sea surface reflected the clear moonlight, occasionally stirring up a snow-white wave.

Kiro pondered, thinking about how to plan the development direction after rescuing the slaves of the 72 branches.

Without a doubt, with my proficiency panel, I'll definitely head to the Grand Line to challenge all sorts of powerful beings.

In this era, the God Valley War has just ended, and the Great Pirate Era has just begun. He has plenty of time to develop, and he might even become a powerful figure before the original storyline.

In this situation, it was clearly inappropriate to have Robin with him, as Kiro could not guarantee that he could take care of his young sister at all times.

But he absolutely cannot let Robin experience the same malicious targeting from society again.

Recalling the original story, Kiro remembers that Saul did not die on Ohara, but survived by chance after the flames melted and dissolved the ice.

Despite losing a leg, Kiro, as a former Marine Vice Admiral and with a deep bond with Robin, thought that entrusting Robin to Saul's care might be a good idea.

The biggest problem is, where is Saul?

Perhaps only Aokiji, who has released a whole sea, will know the answer.

Another option is the Revolutionary Army. As an organization that intends to overthrow the World Government, they are completely aligned with Robin's enemies and have the ability to protect her.

However, Kiro did not trust the Revolutionary Army, and he would not choose to entrust Robin to their care unless absolutely necessary.

We can only take it one step at a time for now.

As he walked back to his temporary home, Kiro scratched his head, looking somewhat worried.

Soon they arrived at the familiar doorway. Seeing the lights still on inside, Kiro's lips curled into a smile.

Without using a key, he cleared his throat and rang the doorbell.

"I'm back!"