The person is wearing a straw hat, and starts with the power of words!

Robin then asked, "Do you want to take me to see the original history of Fishman Island?"

"Yes, it's over there," Sima Di pointed in the direction.

Having Observation Haki is really useful.

The weird thing is,

Previously, Borsalino could be signed off with "one kick to one supernova" simply by using Observation Haki, but this time, Observation Haki swept across the historical records without any action.

"Okay! Let's go!"

Robin spread her angel wings and flew up, side by side with Sima Di, toward the true history.

We soon arrived at our destination.

[Ding! Congratulations on signing in to the famous scene "Historical Original? Hammer????????懯????????谥喥??Hammer?????詥卧櫣???]

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"Joyboy's High-Temperature Immunity": As a Zoan-type Devil Fruit user in the form of Tagne, Joyboy is immune to all high-temperature damage!

----------

Um......

This ability doesn't seem impressive at first glance, but upon closer inspection...

It's still not very good.

Although he is about to participate in the Marineford War, this passive ability is actually effective against Sakazuki's Magma Berry.

but......

With Hyōrinmaru around, he seems like someone who's afraid of the mere temperature of magma.

"We can't just take a direct hit from Sakazuki to demonstrate the value of this ability..."

That would look really stupid!

shook his head,

Sima Di glanced at Robin, who was engrossed in reading the original history book, but did not disturb him.

Instead, they looked at the large pit that had appeared next to the original historical record.

This place was originally where the original red road signs were displayed, but it was dug up and handed over in order to seek the protection of the Whitebeard Pirates.

—Otherwise, do you really think the Whitebeard Pirates would protect Fishman Island for no reason?

Sima Di's expression suddenly changed after he casually scanned the area with his mental energy!

"Huh? This is it?"

Sima Di stepped forward into the pit, condensed Armament Haki under his feet, and stomped his foot, producing a series of "thump thump thump" echoes.

He moved to a different spot and stepped on it again, this time making a "bang bang bang" sound.

There was a hidden compartment underneath!

"interesting."

Sima Di opened the Golden Treasury and summoned Hyōrinmaru, a sword of unparalleled sharpness, which was also a battle-soul sword.

They quickly dug a hole and through it, they could see that there was a tomb underneath, with a skeleton and a manual lying there.

[Ding! Congratulations on signing in to the famous scene "Joy Boy's Tomb!", you have received the sign-in reward "Joy Boy's Strong Physique"!]

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Joy Boy's Conqueror's Haki: As a leader of the freedom fighters eight hundred years ago, Joy Boy possessed extraordinary courage. Although he neglected his Haki due to his excessive focus on developing his Devil Fruit abilities, his Conqueror's Haki still reached a high level!

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Oh open!

Isn't this an unexpected surprise?

The Conqueror's Haki, which had been hovering in the middle level, naturally advanced to the advanced level, with a significant leap in both quality and quantity, and even gained the characteristic of "materialization".

Next,

If he can master the Conqueror's Haki Entanglement technique, then his Conqueror's Haki will reach the top level!

And well...

[Enveloped in Conqueror's Haki!]

He immediately understood the techniques for materializing Conqueror's Haki and applying it to attacks.

His 100% brain development allowed him to master the skill instantly, while the highest level of human intelligence allows one to fully understand the skill and integrate it into one's own abilities.

for a moment,

Sima Di had already achieved enlightenment, and even without the power of words, he could still use the technique of "Conqueror's Haki Entanglement".

This technique may not seem to have any cool effects, but it can be a game-changer in close-quarters combat!

after all,

The pinnacle of physical combat is nothing more than top-tier Armament Haki—that was before Sima Di appeared, of course.

Both possess top-tier Armament Haki, so neither can gain the upper hand.

But if one side were to master Conqueror's Haki...

Wouldn't that tip the scales of victory?

It was precisely because of this tactic that Shanks was able to maintain his position among the Four Emperors despite having the only non-Grand Fleet force.

The Eighteen Subduing Dragon Palms allowed Sima Di's advanced Armament Haki to unleash top-tier destructive power, and now, with the addition of Conqueror's Haki...

Before Armament Haki is exhausted

The current Sima Emperor also possesses "top-tier" combat power in the world.

If one day Armament Haki can break through to the highest level...

Then he is the king standing at the very top of the pyramid!

"Not bad, I didn't expect this unexpected gain."

Sima Di used telekinesis to retrieve the manual next to the corpse, and then put the stones he had just dug back in.

[Added!]

The gaps between the stones immediately closed perfectly.

At this time,

Robin walked over, clearly attracted by the commotion.

"What did you find?" Robin asked curiously.

"Yes, there is a tomb. Besides the remains, this is the only burial item." Sima Di waved the manual.

Open it and take a look...

It's all written in ancient script?

"Here, it seems this was prepared for you." Sima Di handed it to Robin.

Robin was also surprised when she took it; this was the first time she had ever seen a manual written in ancient script.

But as she watched, her expression suddenly tightened!

"Is this the training manual of freedom fighter Joy Boy?" Robin said gravely. "The historical record next to it is Joy Boy's apology; he seems to have made some promise he can't keep..."

"Animal type?????Tao?????Nika morphology?"

"Devil Fruit power awakening?"

"Strange, before its ability awakens, this Mythical Zoan is almost exactly the same as Luffy's Gum-Gum Fruit."

"Unfazed by the high temperatures?"

"I was puzzled at the time that Luffy's Gum-Gum Fruit was immune to the Rumble-Rumble Fruit, but now I see! He must be a Mythical Zoan!"

"Then everything makes sense."

He truly deserves to be called a erudite history PhD.

After reading the training manual, Robin quickly guessed the true name of Luffy's Devil Fruit.

"This discovery is amazing!" Robin exclaimed in surprise. "Luffy has the same Devil Fruit ability as the Freedom Fighter Joy Boy? With this training manual, I believe Luffy will awaken his Devil Fruit ability very soon!"

Emperor Sima was also taken aback.

How could Luffy have stumbled upon such an opportunity after digging up a hole himself?

Should I say or not,

This is the protagonist's luck.

The two used their Hearthstones to return to the Going Merry, where Luffy and his crew were already waiting to depart.

Robin's explanation of the training manual shocked everyone!