Hearing the system's prompt tone, Luffy didn't feel any surprise.

After all, all this was also expected by him.

After looking around at the surrounding partners, I found that they were still looking at the flag affectionately, and slowly, integrating their existence into this flag.

Luffy pursed his lips slightly and smiled.

At this time, it is better not to bother them......

……

……

Sailing on the sea is far less exciting than in the anime.

The sight I see every day is not only the endless sea, but also the endless sea.

You don't even know if you're moving, except for the Navigator.

The sun had just risen to its highest point, and everyone had a hearty lunch.

The only bath on the Merry was completely occupied by two girls.

All the men on board were asked to stay on deck only, not half a step near the cabin.

Supervised by Luffy!

……

……

Zoro and the others reluctantly agreed, and in their spare time, they had to take out a few fishing rods, and just like that, on the deck, while chatting boringly, the fish fell.

Luffy, on the other hand, was sitting on the bow of the Merry's sheep's head with his arms back.

In the system interface, he carefully interrogated about the newly opened nautical ship system.

Consciousness clicked on the icon of the sailing ship.

In an instant, an extremely rudimentary text interface appeared in front of Luffy.

【Golden Merry】

Level: Two (+)

Facilities: None

There are only three short lines of small print, which appear in the center of Luffy's line of sight.

And in the upper left corner of Luffy's line of sight, there is also a golden button that says 'Build', two big letters'.

There is no need to guess at all, Luffy has already understood, this is definitely a big kryptonite channel.

After all, the system has always been this virtue, and the ordinary functions are extremely rudimentary.

As soon as you get to the place where you have to spend money, it will give you all the bells and whistles and make you feel that it is worth it.

Just like the functional websites on the earth, the officials who really serve people are always done as if they were fake.

And those who empty your wallet are all brilliant and cool.

After so many years, Luffy has long been accustomed to the system.

Directly in my heart, I said silently:

"System, explain what this level, facilities, and buildings mean."

As Luffy asked in his heart, the system dinged, brushed the sense of existence, and then began to explain:

[In the nautical ship system, there are ten levels.

Each level represents a standard.

The level of the ship represents the level of the attributes of the seafaring ship.

The specific performance is roughly divided into several aspects, such as the curing properties of the hull and the traveling attributes. 】

"Curing? Is it the rigidity of the ship? ”

[Answer the host, yes.] 】

Luffy, who received an answer from the system, continued to ask:

"That travel attribute is the travel speed?"

[Answering the host, not all.] 】

The system said semi-negatively, and then began to explain:

[Travel attributes include travel speed and travel mode.] 】

"How?"

[Yes.]

For example, a ship with a level of 8 or less is expressed in terms of the speed at which it is traveling.

Seafaring vessels of rank 8 and above will have initial flight capabilities. 】

"Flying !!"

Hearing this, Luffy's eyes suddenly flashed with a ray of light, as if he saw some hope, and hurriedly asked:

"So what's the change between the ninth and tenth levels?!"

Luffy was certainly not interested in this flight attribute.

After all, with One Piece's strange tech tree, it's still easy to build some airplanes, airships, or something.

What really excites him is that since level 8 has the ability to fly, after that, is it possible to fly higher and farther......

The system immediately replied:

[Level 9 is an ultra-high speed that can easily transcend the gravitational pull of the pirate world, and level 10 is a ............]

Just as Luffy was listening carefully, the system suddenly emitted a murmur, so that he couldn't hear what the system was saying at all.

Luffy, who was puzzled, immediately shouted in his heart:

"What are you talking about?"

【………………】

The noise gradually disappeared, but the system was silent for a long time.

After a long while, the system spoke again:

[The attributes of the tenth-level nautical ship are beyond the current understanding of the host, so the system cannot explain it accordingly.] 】

"My ...... Understand the scope? ”

Luffy was suddenly stunned.

To be honest, Luffy can even understand a little bit of the parallel plane, the multiverse, and the system actually said that this is something he can't understand.

In an instant, Luffy fell into confusion, and all the sci-fi clips he had seen in his head began to keep rummaging in his memory.

……

……

Time passed little by little, and Luffy's eyes, from the confusion at the beginning, slowly became more and more energetic.

Thinking about it to the end, even from between Luffy's eyebrows, a fine light erupted and scattered on the sea in front of him.

Although it is still unclear what exactly the tenth level represents.

But at least now Luffy already knows that he should work in that direction.

"Huh?"

Zolon, who was so bored that he was about to fall asleep, suddenly seemed to be aware of something, and glanced at Luffy curiously.

Then he closed his eyes again, a smile on his lips, and fell into a dream.

……

……

"Whew~"

Putting aside the useless thoughts in his heart about the current situation, Luffy studied the matter again, and continued to ask carefully at the system:

"Then, system, how should the level of this nautical ship be improved?"

The system immediately replied:

[Answer the host, the level of the nautical ship is increased, just click the plus sign after the level with your mind.] 】

[Please note that each time you boost, you will spend the same amount of gold.] 】

“………………”

"It's gold again!"

Luffy muttered viciously in his heart.

He knew that the new system was happy and didn't make money, it didn't exist!

Fortunately, he still has more than 28 million gold coins now, and he is rich and wealthy, and he is not afraid of the system at all!

The idea is placed directly on the plus sign after the level, and it is clicked instantly.

An interface pops up suddenly:

[Do you spend 1,000 gold coins to upgrade the level of the sailing ship?] 】

[Yes] [No]

"Huh?"

This is the first time Luffy has seen the system so human, and he will actually ask him before spending money.

It really came as a surprise to him.

"Yes!"

As Luffy's mind moved, the interface disappeared in an instant.

In the rank column, it has also become "three".

Luffy didn't pause, and directly clicked on the plus sign again.

In an instant, there was another inquiry interface, but this time the gold coins that needed to be spent became 10,000.

"A tenfold increase in ......"

Luffy's heart suddenly tightened, although it was expected, but it still made him feel a sense of desperation.

If calculated according to such a gap, the gold coins required to upgrade from level nine to level ten are as high as 100 billion!

Luffy didn't even know if he would be able to raise the Merry to rank eight in his lifetime.

"Let's take one step at a time......"

Luffy sighed inwardly.

It's better than having no clue.

I complained in my heart for a long time, but Luffy didn't stop in his hands.

The gold was reduced by 100,000 in an instant, and the Merry was upgraded again.

[Yes]!

The button was pressed again, and a million gold coins came to naught, and the Merry reached the fifth level.

The whole hull seemed to be completely new, although at first glance, there was no change at all.

But when Luffy put his hand on the bow of the ship, an inexplicable throbbing still reached his heart.

Touching the bow of the sheep's head, Luffy asked again in his heart:

"System, what level of sturdiness is the Merry now?"

[Answering the host, the current degree of solidification of the Golden Merry has reached a level comparable to that of the Adam Divine Tree in the Pirate World. 】

"The Adam Sacred Tree?"

Luffy said lightly:

"So, the Merry should be on the same level as the original Sonny by now."

Gently stroking the sheep's head, Luffy continued to say with remembrance:

"That way, you won't be abandoned again......"

Then, without the slightest pause, the mind clicked again on the plus sign.

The gold coin instantly shrank by half, and the level of the Merry also became level six.

It has become the strongest sailing ship in the world.

"Follow me with confidence!

I'm counting on you for the rest of my life! ”

Luffy whispered to Merry.

Above the bow of the ship, the corners of Mei Li's three-petal mouth seemed to be grinning little by little, and she became more happy......