The Ability to Cut All Fruits

Mr. 1's body bristled with sharp blades, glistening menacingly under the sun.

With a fluid motion controlled by Mr. 1, the blades began spinning, each rotation faster than the last.

"My body is impossible to injure! It is made of blades! No sword skills can compete with Devil Fruits!"

He pushed his skills to the limit, choosing to block rather than dodge Bai Yu's impending slash when evasion was no longer an option.

In the mere fraction of a second, the slash was upon him.

The slash, a turquoise arc in the shape of a half-moon and pulsing with an intense sword aura, collided directly with Mr. 1's bladed form.

Clang! Crash! Bang!

The moment the slash met the blades adorning Mr. 1's body, a cacophony of metallic clashes erupted, followed by a resonating, high-pitched ringing.

But the anticipated deadlock never came.

Bai Yu's strike, seemingly simple, was imbued with a powerful, almost tangible sword aura which glowed for a short moment, intensifying its already formidable force.

"With my sword, nothing will be impossible..." Bai Yu felt a familiar feeling welling up in his chest, as he clenched his weapon tightly.

With a single contact, the metal blades protecting Mr. 1's body shattered.

Shink!

The residual force of the slash carried through, cleaving into Mr. 1's flesh.

Blood sprayed in an artful arc as the light of the blade flashed. Seconds later, Bai Yu's slash gradually dissipated, leaving a chilling silence in its wake.

Upon inspection, a deep, diagonal gash was revealed across Mr. 1's chest, running from his left shoulder down to his right waist, so profound that the bone underneath was faintly visible.

Thud!

Overwhelmed by pain and blood loss, Mr. 1 slumped to the ground, consciousness slipping away.

He saw a small crack form along the spine of his weapon, but only sighed softly.

Bai Yu, with an elegant flick of his sword, sheathed the weapon and pivoted gracefully on his heel.

Silence enveloped the onlookers, stunned by the swift conclusion.

"What are you waiting for?" Bai Yu snapped, breaking the quiet. "Two of you, cuff him with the Seastone handcuffs and take him back to the ship."

His words seemed to awaken the others from their daze, and they quickly complied, restraining Mr. 1 with Seastone handcuffs—designed to negate the powers of Devil Fruit users—before carrying his unconscious form back the way they came.

As they departed, a series of notifications resounded in Bai Yu's mind, rewards from his mysterious system for achieving 10,000 sword swings: a significant increase in his Azure Dragon Sword Aura proficiency, a boost to his physical attributes, and most notably, the awakening of Armament and Observation Haki. With that came a special gift known as Color of the Supreme King, Conqueror's Haki.

Satisfaction spread across Bai Yu's features as he absorbed the influx of information and sensed his enhanced physical prowess.

"How timely," Bai Yu mused, a hint of elation in his tone. "Haki is essential against Logia-type Devil Fruit users."

With his newfound abilities, Bai Yu's confidence swelled in anticipation of his confrontation with Crocodile.

"Commander, are you alright? You were emitting a strange colored smoke!" a concerned sergeant inquired, referring to the unusual phenomenon accompanying Bai Yu's sudden power increase.

"I'm fine, just a brief moment of insight," Bai Yu replied nonchalantly, concealing the truth of his system.

"Let's move," he ordered, keen to avoid further questions.

Acknowledging his command, the navy soldiers quickly fell into formation, following Bai Yu towards the heart of the conflict—the Alubarna Palace.

...

Meanwhile, within the palace, Crocodile reveled in his premature victory, holding King Cobra captive and mocking Princess Vivi's futile defiance.

However, his arrogance was soon challenged by the unexpected arrival of Bai Yu and his contingent of navy soldiers, heralding a pivotal clash that would determine the fate of the kingdom.

"Marines?" Crocodile's voice held an edge of surprise.

He thought back to Alabasta's stationed marines, intended to be embroiled in the civil war he had orchestrated.

"Where did these weak officers come from?"

More puzzling was the figure leading them, who appeared to hold no military rank.

"Your presence here can only mean your misfortune," he remarked, quickly regaining his composure.

He scoffed at the small naval force, lacking even a high-ranking Vice-Admiral.

"Princess Vivi, we're from the Marine's 188th branch," a marine officer spoke, ignoring Crocodile's presence.

"We received urgent orders and came to assist. My name is Bai Yu," he introduced himself, turning with a smile to address Princess Vivi.

"The Marine's 188th branch? Bai Yu?" Vivi echoed, her confusion evident. She had never heard of this branch, let alone anticipated Crocodile's insurrection.

"How did the marines receive word so quickly? Well, it doesn't matter. Go, quickly! Relay this information about Crocodile to the rebels!" Vivi instructed, her attention solely on Bai Yu and his men, understanding the gravity of Crocodile's covert takeover.

Once the rebels knew of Crocodile's deceit, the civil war would undoubtedly end, leaving Crocodile against the entire might of Alabasta.

"Guhahahahaha! None of you will leave here alive today! Though I did enjoy that look of hope on your face." Crocodile declared, bursting into laughter.

With a swift motion, his sand-empowered hand swung, sending a gust that slammed the palace's giant doors shut.

"Crocodile possesses a Devil Fruit power; everyone, fall back! Protect Princess Vivi!" Bai Yu commanded his men.

"Yes, sir!"

Recognizing Bai Yu's authority, the navy soldiers ushered Princess Vivi towards the door, while others attempted to force it open.

"Humph!"

Crocodile wouldn't allow his prey to escape easily. Transforming his lower body into sand, he lightened his weight and pursued them swiftly.

"Your opponent is me," Bai Yu announced, stepping forward to intercept Crocodile, his hand gripping his sword's hilt.

"Fool!" Crocodile sneered, undeterred, as he lunged at Bai Yu.

The clash was imminent. Bai Yu wielded his sword with incredible force, aiming a potentially devastating blow from above at the onrushing Crocodile.

But Crocodile, smirking, didn't flinch. His left hand, adorned with a poison-tipped golden hook, struck towards Bai Yu, poised to deliver a lethal touch.

As Crocodile anticipated, his sand body nullified the physical attack, leaving Bai Yu open to his counterstrike.

"Perish in your ignorance! Logia are invincible!!" he jeered, convinced of his impending victory.

Yet, he was met with Bai Yu's serene countenance, unsettling him profoundly.

Bai Yu silently invoked a series of training in his head, bringing forth a fire in his chest to the real world.

A mysterious energy enveloped him, concentrating around his sword arm, imbuing the blade with a deep black sheen.

With a renewed effort, Bai Yu pressed his attack. To everyone's astonishment, his blade connected, cleaving through Crocodile's sand form and drawing blood.

Injured and disbelieving, Crocodile retreated, his offensive halted.

"What?!" he exclaimed, grasping his wound, his eyes wide in disbelief as he stared at Bai Yu.

Around them, the marines and Princess Vivi shared his astonishment. Crocodile, the formidable Warlord with a bounty of 81 million, wielding the fearsome power of a Devil Fruit, was wounded!

"Warrant Officer Bai Yu... he's incredible!" the navy soldiers mentally applauded, their spirits lifted.

Hope ignited in Princess Vivi's eyes as she watched the confrontation unfold.

Casually, Bai Yu flicked the blood from his blade, his demeanor calm.

"Armament Haki! Even before the New World? Am I cursed with bad luck?" Crocodile realized, his face contorted in a mix of pain and surprise.

Trying to regain his regular demeanor, he asked, "How do you know Armament Haki?!"

Crocodile, despite his extensive knowledge, was taken aback. Bai Yu's sword was infused with Haki, the very power capable of countering Logia users!