One Piece: Starting with Breathing Techniques

Six years ago, when Jack had just set sail, he saw that chilling name on the headlines.

Known as the world's most dangerous swordsman, the swordsman Kiro!

Despite his youth, he decisively defeated the renowned Borsalino, even severing one of his arms.

Although it had just entered the Grand Line, it swept through the Navy's G-7 branch with unstoppable momentum, achieving a terrifying record.

Borsalino, whom he defeated, is now a pillar of the Navy, an admiral representing the highest level of combat power.

This indirectly shows just how terrifying Kiro's strength is after defeating Kizaru!

Jack broke out in a cold sweat as he realized that the young man's face was gradually matching the appearance on the wanted poster in his memory.

"No...this is impossible...you, you're Kiro?!"

Jack's face turned ashen; his arrogant demeanor vanished, replaced by disbelief and panic.

Six years ago, Kiro's bounty was as high as 1.03 billion Berries.

That was a height he could never reach.

The current Kilo is undoubtedly stronger than it was six years ago.

Jack only has a bounty of 350 million, which at most allows him to act arrogantly in the first half of the Grand Line. How can he possibly compete with the renowned Kiro?

In an instant, Jack's pupils trembled, cold sweat beaded on his cheeks, and his gaze toward Kiro was filled with fear and panic.

"Captain Jack, this kid actually dared to kill First Mate York?!"

"This is clearly a provocation!"

A pirate standing behind Jack saw his first mate die on the spot, his eyes turned red, and he pointed at Kiro and angrily rebuked him.

The next moment...

boom!

A giant hand, accompanied by a rolling roar, crashed down. Before the pirate could even react, an immense force smashed him into a pile of minced meat.

Amidst the horrified and bewildered gazes of the many pirates, Jack withdrew his blood-stained fist, took a deep breath, and even put on a fawning smile as he looked at Kiro.

"Lord Kiro, I was momentarily blind and did not recognize you."

"I am willing to entrust all my treasures to you!"

"Hey, is it possible to reconcile?"

Upon hearing this, the many pirates on the Mammoth Pirates were startled and immediately turned to look at the unfamiliar-looking Kiro, their eyes filled with fear.

"He...he's that swordsman Kiro?!"

"That killing machine from six years ago!"

Some people recalled what they had just done to Kilo, and their voices immediately changed to one of terror.

"We actually provoked this god of death?! We even wanted to kill him?"

Everyone looked at Kiro and retreated in fear, their previous arrogance and haughtiness completely gone.

The opponent was an absolute powerhouse in the New World, and in their presence, he was no different from a tiger that had barged into a flock of sheep.

Even Jack, who had few rivals in the first half of the Grand Line, turned pale and looked desperate.

Kiro looked up at Jack and the numerous pirates, their faces filled with fear, his expression as calm as ever, and spoke indifferently:

"Reconciliation? At this moment? Jack, you're not joking, are you?"

He pointed to the pool of blood behind him, "You not only tried to crush my ship, but you also attacked me."

"Tell me, what reason do I have to let you go?"

Upon hearing this, a sense of powerless despair spread among the pirates, and the already oppressive atmosphere instantly plummeted to freezing point.

Jack's lips moved as if he wanted to refute, but he found himself speechless.

After all, they were indeed at fault first; who would have thought they would provoke such a killing god?

If the enemy can defeat even a naval admiral, how can we possibly contend with them?

His eyes showed despair, and he was just about to fight to the death when he heard Kiro speak again:

"However, I am not the kind of person who kills innocent people indiscriminately."

"Since you made the mistake on your own initiative, you should pay the corresponding price."

"If you survive one of my sword strikes, I'll let you go."

Upon hearing this, Jack was overjoyed, his face beaming with the ecstasy of someone who had just escaped death.

"Thank you, Lord Kiro!"

He was known for his thick skin, great strength, and immense power.

His Zoan-type Ancient Species Mammoth Fruit, combined with his Fish-Man physique, forged his monstrous vitality and pure power.

Even in the New World, he was confident that no one could be stronger than him in terms of defense!

Within just a few years of going to sea, he was hailed as the "Mammoth King with amazing endurance," able to escape even when pursued by a naval admiral.

Although Kiro's strength far surpasses his own, Jack is still confident that he can withstand just one of Kiro's sword strikes.

Many pirates also breathed a sigh of relief, overjoyed.

They knew perfectly well that with Jack's Devil Fruit ability, taking Kiro's sword strike would be a piece of cake!

Ignoring the changing emotions of the crowd, Kiro calmed down, climbed onto the hilt of the Dragon Slayer Sword with his right hand, and lightly leaped, hovering above the giant ship.

His aura continued to rise and transform, even the surrounding sky darkened and changed color, and black and red lightning could be seen leaping around him from time to time.

Meanwhile, Jack below had already fully activated his Devil Fruit power, transforming into a massive, ferocious mammoth covered in jet-black Armament Haki.

He looked intently at the Kiro above, his pupils reflecting the ever-increasing momentum.

A fierce wind swept through, whipping everyone's clothes into the air, and the piercing howling seemed to foreshadow the terrifying strike that was about to come.

Some people swallowed hard, looking at the Kilo poised above, their initial confidence suddenly wavering.

"Can our captain really withstand this sword strike?"

To be fair, they had fought alongside Jack against countless pirate crews and even witnessed a Marine Admiral take action.

Following the Ohara incident, three admirals have taken up their posts: Akainu - Sakazuki, Aokiji - Kuzan, and Kizaru - Borsalino.

Although Kizaru lost an arm to Kiro, he still managed to secure the position of Admiral thanks to his exceptional strength.

The Mammoth Pirates had witnessed Akainu's attack before, and the terrifying, earth-shattering magma still haunted them to this day.

However, as Kiro gathered his strength, the Mammoth Pirates felt an even stronger pressure from above than that of Akainu.

It seemed to be brewing a blow powerful enough to destroy the heavens and the earth and tear apart the ocean.

"This... can Captain Jack really catch it?"

Kilo's long black hair moved without wind. After taking a deep breath, his aura suddenly surged to its peak, and his eyes flashed with a sharp light.

An astonishing black and red aura erupted from him, spreading throughout the entire giant ship in the blink of an eye.

The moment they came into contact with this aura, the vast majority of pirates immediately turned their eyes back, fainted, and collapsed with a thud.

Only a few strong-willed pirates broke out in a cold sweat, struggling to sit up, looking at the constantly erupting aura above them, and swallowed hard.

"Conqueror's Haki?!"

Before anyone could react, Kiro moved.

With a light flick of his right arm, the Dragon Slayer sword, trailing a faint red glow, hurtled through the air and sped off the blade toward the mammoths waiting below.

"Is that all? I managed to defend against it!" Jack felt a surge of joy as he sensed the sword energy.

However, as the sword energy flew, its momentum became increasingly terrifying, expanding and growing in the air. In the blink of an eye, it grew from one meter to more than a hundred meters.

Before reaching the giant ship, the sword energy had expanded to nearly a thousand meters, shrouding the entire ship in shadow.

At the edge of the sword energy, invisible flames burned, distorting the air and creating rolling waves of energy.

Looking at the massive sword energy approaching his face, Jack gave a bitter laugh, his pupils reflecting the world-destroying sword strike.

"What kind of monster is this...?"