Sailing: His comprehension is against the sky, and he comprehends the Eight Gates at the beginning.

"Don't insult me, Kro, with a toy like yours!"

Kuro roared angrily, staring at Luffy and his companions with murderous intent.

Usopp instantly realized the gap between himself and his opponent and hid again.

"Kroo said again."

"I should be the one going on a killing spree."

His gaze was fixed on Luffy.

"If it weren't for you, my identity wouldn't have been exposed, and that foolish young lady would have been willing to die for me."

"It's all because of you, because of you outsiders."

"Today, none of you will leave here alive."

As soon as Kro finished speaking, the claws on his other hand were also freed.

Suddenly, his hands seemed to lose all feeling and fell limply to his sides, and his body became hunched over.

Upon seeing this, Nami seemed to suddenly remember something, picked up the documents in her hand, and exclaimed in surprise.

"The information says that when Kro becomes like this, he will unleash his strongest move, the Spoon, using the Silent Step to launch an indiscriminate attack."

"We have to stop him quickly, Luffy!"

Seeing Kuro about to unleash his ultimate attack, Luffy didn't choose to interrupt him immediately, but instead spoke to Uta.

"Uta, release your power."

He only allowed Uta to use his abilities to expose Kro's true identity.

Now that the goal has been achieved, there is no longer any point in continuing to maintain the music world.

Upon hearing this, Uta began to sing again.

In the blink of an eye, everyone present felt as if their bodies had suddenly lost control, as if they had been detached from their bodies.

After a brief period of disorientation, when they regained consciousness, they found themselves unconscious and lying on the ground.

"Huh?! That's strange!"

Nami sat up from the ground, her eyes filled with confusion and surprise.

“That’s great, Uta’s house is still there.”

Usopp was still fixated on the issue of where Kaya lived.

"What a terrifying ability."

Zoro couldn't help but sigh, instantly realizing that they must have been unconsciously trapped by Uta's power, and that their physical bodies were in a state of unconsciousness, making them vulnerable to being easily killed at any moment.

As for Kuro, he looked at Luffy with eyes full of confusion and doubt.

"Why? Why didn't you kill me just now?"

Luffy chuckled upon hearing this.

"Killing you would be too easy, but just like how you used Kaya, I have other uses for sparing your life."

After saying that, Luffy addressed the others.

"Zoro, he's yours. Everyone else, get out of here."

Upon hearing this, everyone immediately did as instructed, and Kaya was also taken away with them.

Kuro then realized that Luffy intended for him to be Zoro's sparring partner.

His anger was immediately ignited.

"You...are unforgivable!"

Kro roared in a deep voice and immediately assumed a battle stance, preparing to unleash the [Spoon] attack.

Combat is the fastest way to improve your strength.

So even though Luffy could have had Uta kill Kuro's body directly, or even if he himself could have instantly killed Kuro, he didn't do it.

They were drawn to Kro's incredibly fast and silent attack style.

For Zoro, this would be an extremely suitable training partner at this stage.

Luffy then used his comprehension transfer to grant Zoro an incredible level of comprehension, allowing him to maximize his improvement in battle.

"Zoro, be careful to use your Haki. If you really can't dodge it, then use your weapon to block it."

Luffy reminded Zoro that this was also a good opportunity for Zoro to practice his Observation Haki.

Zoro nodded solemnly upon hearing this, and then fully entered battle mode.

next second.

Kuro's figure suddenly disappeared, and Luffy also leaped back to the side at that moment.

The battlefield was handed over to the two of them.

For Luffy, opponents like Kuro wouldn't improve him anymore, because they're simply not on the same level.

His current physique is top-notch after more than a decade of training.

The only thing that needs to be improved right now is domineering presence.

Since he set sail, he has already encountered two events that could enhance his Conqueror's Haki.

This number of times is equivalent to the number of events he would encounter in several years in Windmill Village.

Furthermore, they display varying degrees of courage and their level of Conqueror's Haki varies depending on the events they encounter.

For example, the improvement he achieved by helping rebuild the homes of the town's residents in Orange Town was much greater than the improvement he achieved by not causing trouble for the Navy in Shells Town.

Therefore, even if Luffy doesn't encounter any suitable opponents, his strength continues to grow rapidly.

...

"So strong!"

In the distance, Usopp and Nami watched Zoro and Nami's battle with mixed feelings.

They couldn't even catch Kro's movements.

But Zoro is able to dodge or block the dazzling attacks time and time again.

Watching the two engage in a fierce battle, Luffy couldn't help but feel a sense of awe.

Indeed, it is under these extreme conditions that one's potential is most stimulated and enhanced.

He could even clearly see that Zoro's mastery of Observation Haki was rapidly improving, and his combat abilities were also constantly increasing.

...

Chapter Twenty-Nine: Enhanced Version of the Going Merry, Art is an Explosion

The battle between Zoro and Kuro ended with Zoro rapidly growing stronger and gradually suppressing his opponent.

Luffy gave him an extraordinary level of understanding, and Kuro was also a formidable opponent.

This greatly enhanced Zoro's abilities in this battle.

In particular, his Observation Haki was already beginning to take shape and was starting to look somewhat like it.

Luffy roughly estimated that Zoro's current strength has reached the level he achieved in the original story when he defeated Mr. 1 in Alabasta.

That was the first time he cut through steel, marking a significant leap in his strength.

Now, because he came into contact with Haki early on and has Luffy's various assistance, his strength has improved rapidly.

...

After defeating Kro, the group rested and recuperated at Kaya's villa.

After regaining consciousness, Kaya expressed her sincere gratitude to Luffy and the others, and asked Merry, another butler at the villa, to help Luffy and his crew build a pirate ship as a thank-you gift.

Upon learning this news, Luffy went to find Merry alone.

"Mr. Luffy, you've arrived just in time."

"Actually, I've always dreamed of building my dream ship, the Going Merry, since I was very young. Now the ship is almost finished."

"You only need to stay here for about three more days, and then we can give you this ship."

Merry excitedly showed Luffy his dream ship.

But Luffy spoke up at that moment.

"Actually, we were planning to go to the Grand Line. I heard that the environment there is extremely harsh, so I hope you can reinforce the ship as a whole, especially the keel."

In the original story, the Going Merry completely lost its ability to sail after encountering the Sky Island. In addition, its keel was damaged beyond repair, and it could only be burned down.

Luffy, of course, did not want to see this happen.

Even if the Going Merry is unable to sustain further voyages in the future, he hopes that when the ship is replaced, the Going Merry will be intact.

Ideally, it should be modified again to create a brand new ship, capable of supporting the voyage to come.

Merry was somewhat embarrassed upon hearing this.

"Mr. Luffy, the Going Merry is nearing the end of its lifespan. If we reinforce it now, we'll have to dismantle part of the hull and rebuild it from scratch."

"I'm afraid this will take a lot more time, and I probably can't afford the expenses."

Luffy said it directly.

"Go ahead and reinforce it, we can wait."

"If you need money, we have around 1000 million Berries here. Is that enough for you?"

Merry nodded repeatedly.

"That's enough. We don't need 1000 million. I estimate that around 300 million will be enough, and it will take about ten days."

"Since you're willing to wait, Mr. Luffy, I will do my best to build you a sturdy Going Merry."

Luffy breathed a sigh of relief when he heard that the Going Merry would be reinforced.

"Then I'll have to trouble you, Mr. Merry."

...

After leaving Merry, Luffy told the others that they should wait there for a while.

After that, Luffy let Uta and Zoro train on their own.

Out of boredom, Nami found some books about navigation and weather in Kaya's villa and started studying them.

Luffy then approached Usopp, intending to have him begin research on the "Buggy Bullet".

They summoned Usopp to a research room that Merry had provided for them.

Luffy then took out the blueprints for the "Buggy Bomb".

"Usopp, take a look at this blueprint?"

Usopp curiously took the blueprints and began to study them carefully.

But as he watched, Usopp's brows furrowed tightly.

A moment later, he looked at Luffy in shock and asked.

"Luffy, where did you get this blueprint?"

"The method recorded here seems to be able to develop a very unusual shell!"

Luffy was overjoyed to hear this.

"Do you understand?"

Usopp stared at the blueprints, his eyes filled with contemplation and confusion.

"I can understand the simplest ones, but I have to look them up in a book for the more complex ones."

After leaving the research room, Usopp returned a while later with several very thick books about cannons and gunpowder.

His previous research on "Gunpowder Star" was learned from these books.

However, because he only learned the basics, the things he researched were not very powerful.