Luffy, how can you become the Pirate King if you don't work hard!

"Is this also a skill?!"

The crowd gasped in amazement once again.

Merry explained, "This is one of my abilities, Glass Attachment, which allows the hull to be covered with a glass layer, greatly enhancing its defensive capabilities! From now on, ordinary cannonballs simply won't be able to penetrate our ships!"

"awesome!"

Nami was the first to cheer. As a navigator, nothing gave her more peace of mind than a sturdy ship.

Usopp and Franky couldn't resist touching the glassy surface, studying its hardness and properties.

It's important to understand that the reason navies can dominate the seas is because of their advanced ships and powerful cannons.

If every box contains a Devil Fruit, then there must be many other treasures hidden within.

Everyone's enthusiasm for the treasure hunt was immediately ignited.

The deck was piled high with various treasures.

Brilliant gems, gold bars, and all sorts of rare treasures shimmered alluringly in the sunlight, piling up on a corner of the Sunnylands' deck.

To express their gratitude for being saved, Lola and her crew brought up almost every movable piece of treasure from the Thriller Bark, and these spoils now awaited inspection by their new owner.

Everyone gathered around the treasure, the atmosphere relaxed and pleasant.

Chopper and Usopp were excitedly identifying some strangely shaped seashells and minerals. It turned out that they weren't the only ones who had been to Skypiea; there were quite a few Skypiea shells in Moria's treasure.

Sanji, on the other hand, was more interested in the exquisite tableware inlaid with jewels.

Those pirates and nobles were just too rich; their tableware was inlaid with gemstones, and even included gold and diamonds.

Nami stood with her hands on her hips, her face beaming with happiness, her eyes practically shooting out the symbol of Pele. She had already begun to rapidly calculate the value of this enormous fortune in her mind.

"Hey, Luffy, isn't this the giant sword you used before?" Zoro's voice carried a hint of surprise.

Then he pulled out a giant sword with an exaggerated shape and an astonishing length from a pile of gold coins. It was the very sword that Luffy had wielded using his rubber powers and shadow amplification when fighting Oars and Moria.

Luffy looked over upon hearing the sound and said, "It really is. I didn't expect Lola and the others to bring this sword up as well."

He walked over, reached out and touched the cold blade, and said with some surprise, "After using that Rubber Spiral Sword Dance, it wasn't damaged at all. I didn't have time to use Armament Haki to turn it into a black blade to protect it."

"This doesn't look like an ordinary sword." Zoro weighed the greatsword in his hand, his brow furrowing slightly. He was a swordsman, after all, and a fine sword always held a strange attraction for a swordsman.

This knife is heavy in the hand, made of neither gold nor iron, and exudes an ancient and mysterious aura.

What alarmed him even more was that when he gripped the hilt, he could vaguely feel a life pulsating within the blade, an indescribable attraction that made him itch with desire.

Luffy,

Zoro couldn't help but speak, his gaze still fixed on the sword, "Your swordsmanship is already quite good, especially the techniques that combine the Gum-Gum Fruit's power with swordsmanship; their power is astonishing. Having such a fine sword in hand is like adding wings to a tiger. Don't you want to consider using it?"

"But Zoro, isn't this sword a bit too big? It doesn't quite fit my style. I feel more comfortable using my bare hands or my flexible body."

Luffy looked at the blade, which was much longer than his own height. He couldn't always enter shadow form.

Transforming into a rubber giant would be too much. Although he could use the Rubber-Rubber Fruit to maintain a slightly inflated size, it wouldn't suit his fighting style. There's no need for it just to use a sword.

Just as Luffy finished speaking, something unexpected happened!

As if understanding Luffy's words, the huge sword in Zoro's hand suddenly emitted a faint, eerie light. Then, under the astonished gazes of everyone, it began to shrink and deform at a visible speed.

In the blink of an eye, the giant sword that required two hands to wield transformed into a katana of moderate length with a simple design, exuding a sharp and cold light.

"Huh?" Usopp exclaimed in surprise.

"A knife can actually transform?" Chopper exclaimed, his eyes wide. "Could this be Franky?!"

"Are you kidding me? I'm still here." Franky joined in, striking his classic pose. "A knife that can shrink? That's so super cool!"

Nami also temporarily snapped out of her reverie about the treasure.

"I've never heard of a sword that can change shape at will," Nami said curiously.

"This is a fine knife, and it's even a type of black knife."

Zoro's eyes lit up with excitement; as a three-sword style swordsman, his desire for a famous sword was ingrained in his very bones.

He examined the now smaller knife in his hand repeatedly, tried swinging it a few times, and found it to be excellent, as if the weight of the blade had been perfectly adjusted along with the change in shape.

He couldn't help but say, "Shorter?"

The knife remained unchanged.

He seemed to be deep in thought, then tossed the knife to Luffy, saying, "Luffy, you try it."

"Oh, that's interesting. Let's make it even shorter then."

Luffy glanced at the sword in his hand, and sure enough, with a thought, the black sword shortened again, becoming a short blade more suitable for thrusting.

"Amazing!"

Zoro exclaimed in admiration, but his eyes were also filled with doubt. "I've never heard of this kind of sword before."

This is simply unheard of.

The group looked at each other, and finally turned their attention to the two most knowledgeable members of the team.

Vivi and Robin.

Robin shook his head, indicating that he didn't know much about knives.

Vivi frowned slightly as she carefully recalled the events. She slowly stepped forward and carefully observed the black sword in Luffy's hand, which was still humming slightly.

After a moment of contemplation, her eyes suddenly lit up:

“I remember now, I seem to have seen records about the lineage of famous swords in my father’s library.”

Her words drew everyone's attention.

"What is a famous sword?" Chopper asked.

"Oh, these are the three swords I have in my hand." Zoro grinned and took out his three famous swords one by one.

A fine and swift sword, the demonic sword Sandai Kitetsu.

The Great Sword has twenty-one techniques, and the Black Sword is Autumn Water.

The twenty-one great swords, and the Wado Ichimonji.

Weiwei cleared her throat and first explained to everyone what a famous sword was.

"As we all know, famous swords in the world are roughly divided into several grades: the highest grade is the twelve supreme grade swords, the next grade is the twenty-one great grade swords, and then the fifty good grade swords."

Zoro's Sandai Kitetsu is a cursed sword ranked among the fifty good swords, while its origin, the Shodai Kitetsu, is one of the twelve supreme swords.

Everyone nodded.

"but,"

Vivi changed the subject and said, "In the lineage of famous swords, besides the well-known Onikiri series of demon swords, there is actually another, more mysterious series."

Chapter 278 Luffy's Weapon, the Supreme Grade Sword

"Another series?"

Zoro pressed on impatiently, his grip on his sword tightening involuntarily. "What is it?"

Vivi said, "That series is called the Magic Cutter."

"Morcher?"

"Yes. Legend has it that the Magic Cutter series also has three swords, corresponding to the three grades of Supreme Grade Sword, Great Grade Sword, and Good Grade Sword respectively."

Unlike the demons of the Onikiri, the characteristics of the Makiri lie in change and will. It is said that a true Makiri can sense the wielder's will, change its shape and size at will, and even resonate with the master's will, exerting power beyond reason.

They are not known for their sharpness or hardness, but rather for their versatile adaptability and the strange power they contain.

As for famous swords, almost every powerful figure with a name and reputation on this sea possesses one.

Many collectors are also happy to search for them.

For example, there are two famous swords at the feet of the Golden Lion, and Hawkeye, the world's greatest swordsman, has a Supreme Grade Sword in his hand.

Black Blade, Night!

Vivi pointed to the black sword in Luffy's hand and said, "If the ancient records are correct, it can change according to its master's will, and it is a type of black sword. The one in Luffy's hand is very likely the top one in the Demon Cutter series, one of the twelve Supreme Grade Swords - Black Sword Demon Intent!"

"The demonic intent of the Supreme Grade Sword?"

Zoro gasped.

The Supreme Grade Sword is the ultimate weapon that every swordsman dreams of!

"Is it that important?" Luffy now understood why Vivi called it a black sword. His eyes flickered, and he immediately channeled Armament Haki into the demonic intent.

Then the thick layer of rust that had been wrapped around the demonic intent dissipated, revealing a jet-black blade.

"The blade is just like Hawkeye's Black Sword Yoru, with a chaotic pattern of overlapping serpentine lines. It truly lives up to its reputation as a Supreme Grade Sword." Zoro's eyes burned with fervor.

"Want to give it a try?" Luffy tossed the sword to Zoro.

Zoro took it and swung it around, a flash of sword energy appearing in the air.

However, to everyone's surprise, after a brief moment of excitement and fascination, Zoro flicked his wrist and, without hesitation, threw the black sword demonic intent that seemed to be a Supreme Grade Sword back to Luffy!

"Hey, Zoro!"

Luffy frantically caught the demonic energy that had returned to its normal katana size, looking utterly astonished. "Don't you want to keep a good sword to yourself when you see one? This is a Supreme Grade Sword!"

Zoro crossed his arms, gave a cool smirk, and said, "What an idiot. Famous swords, especially those of this caliber, have their own spirits. They will choose their own masters."

It reacted in my hands just now, but not nearly as completely and obediently as it did in yours. Clearly, from the moment it appeared during your battle to now transforming for you, it has chosen you.

"The more powerful the blade, the more this applies. It can't be forced. And,"

He glanced at Luffy, a smile playing on his lips. "Your Gum-Gum Fruit ability, combined with a sword that can change length at will, just thinking about it makes me realize the trouble is going to double. Perfect for you."

"Not bad, that green-haired guy actually has such a broad mind," Sanji praised with a smug look on his face.

Zoro's lips twitched. "If you don't speak, no one will think you're mute."

"Then I won't stand on ceremony."