One Piece: The user of the Nen-Nen Fruit, who overturned the sea.

"This is my father's old sailing log."

Hiyori placed the booklet on the ground and carefully opened it.

"It records what he saw and heard while sailing with the Whitebeard Pirates and the Roger Pirates—"

This includes his process of learning Conqueror's Haki.

Luffy's eyes lit up instantly, and he suddenly stretched out his arm, snatching the booklet from Hiyori's hand and flipping it open with a rustling sound.

But after just one glance, his expression froze.

The booklet was filled with dense writing—Kozuki Oden's handwriting wasn't exactly neat, but every word was written with great effort, as if he wanted to carve his feelings at the time into the paper.

The problem is, Luffy simply can't concentrate on looking at these things.

He flipped through a dozen pages in a flash, his expression shifting from anticipation to anxiety, then from anxiety to frustration, before finally slamming the booklet on the ground.

"I can't understand it at all! What is this nonsense?! Just tell me how to use it directly!!!"

"Lord Oden has already written quite a detailed explanation..."

Just as Kin'emon was about to say a few words in defense of his lord, Luffy interrupted him.

"Where, where! Tell me where it's written!"

Robin sighed, walked over, picked up the booklet, and dusted off the cover.

She flipped to the middle section, her gaze sweeping over the yellowed pages before settling on a particular one.

"Here it is. The chapter about Conqueror's Haki."

Robin cleared her throat and began explaining to Luffy.

"Mr. Oden wrote: 'Today I fought Roger, and his attacks contained a strange power.'"

Before the knife even arrives, the anger has already wounded the person.

I asked him what the technique was, and he said it was called Conqueror's Haki Entanglement, a high-level application of Conqueror's Haki.

I asked how to learn it, and he laughed and said, "Just get hit by him a few more times, and you'll naturally learn."

The room was silent for a full three seconds.

Then everyone's eyes turned to Luffy, their expressions as varied as if they were watching an absurd comedy.

"How come my thoughts are exactly the same as Luffy's..." Nami covered her forehead, looking utterly hopeless.

"Is this what they call the resonance between idiots...?" Sanji dropped the cigarette he was holding.

"No, no, no, the person who said that is clearly an idiot..." Usopp muttered to himself.

Robin was unfazed by the surrounding comments and continued reading:

"Roger said that the essence of Conqueror's Haki Entanglement is to condense Conqueror's Haki to its extreme and then wrap it around the weapon like Armament Haki."

However, this requires extremely strong willpower; ordinary Armament Haki hardening techniques are completely ineffective here.

One must concentrate one's will and spirit, and control it to imbue it into one's fist or weapon.

"There's more to come."

Robin turns to the next page.

"After being attacked by Conqueror's Haki many times, I finally mastered the trick—compressing and condensing Conqueror's Haki and covering it on my weapon."

Then, at the moment of attack, concentrate this power into a single point and unleash it.

This requires a lot of real-world experience; there are no shortcuts.

Robin closed the booklet and looked up at everyone:

"To summarize, there are three points: First, be entangled with the opponent multiple times and carefully perceive their movements."

Second, gather all your Conqueror's Haki. Third, unleash it all at the moment of attack.

"Did you understand?" Robin asked Luffy.

Luffy crossed his arms, looking like he'd just realized something.

"Is that so? It's just the feeling of being beaten, isn't it?"

We happen to have Kaido as our role model, so we can learn from him.

whee!"

The room fell silent again.

Everyone was looking at Luffy like he was an alien.

Nami was the first to explode. She rushed forward, grabbed Luffy by the neck, and shook him violently, so hard that his rubber head left afterimages as it swung back and forth.

"asshole!

Kaido is the enemy!

Will he give you a chance to learn?!

Do you think he's your master?!

Luffy was so dizzy he saw stars, and his voice trembled, but the words still came out of his mouth, clear enough for everyone to hear them clearly:

But—aren't you all still here?

Everyone can take turns, and everyone will definitely learn! Anyway, whether Kaido fights one or a group, it's all the same—let's just learn together!

whee!"

"You make it sound so easy—!!!"

Nami's voice was hoarse from yelling, and she let go of Luffy, who collapsed to the ground like a lump of putty, his head still steaming from the beating.

Zoro leaned against the corner, a slight smile playing on his lips.

He knew, of course, how naive Luffy was, but he had to admit that there was a tiny bit of truth to it.

The Conqueror's Haki must be experienced in actual combat, and as far as they know, the only one in Wano Country who can provide such a combat environment is probably Kaido.

Sanji took the cigarette from his lips, exhaled a smoke ring, and spoke with unusual seriousness:

"Although this idiot speaks without thinking, there really isn't another person besides Kaido who can teach Conqueror's Haki to entangle you."

"Hey, hey, hey, Sanji, why are you messing around with him too!" Usopp's face turned pale.

"It's not nonsense."

Luo spoke, his voice as calm as a surgeon's scalpel.

"Kozuki Oden's records are very clear - there is no shortcut to mastering Conqueror's Haki; it must be honed in real life-or-death battles."

Among us, the only ones we know of who possess Conqueror's Haki are Luffy, Zoro, and Kid.

If the three of them want to master this technique, they must face Kaido's Conqueror's Haki directly.

Kidd leaned against the wall, his metal arms crossed over his chest, and snorted:

"I don't want to learn Kaido's tricks. But if it's about beating him up—I'm willing to cooperate."

"Me too."

Zoro opened his eyes.

"The Three-Sword Style requires stronger attack power."

"If I could incorporate Conqueror's Haki into my swordplay, I might actually be able to break through Kaido's defenses."

Luffy got up from the ground, dusted himself off, and his face still wore that same carefree, bright smile:

"Then it's decided!"

When fighting Kaido, everyone attacks together, taking turns getting beaten up and learning from each other!

"You bastard..."

Nami sighed, rubbing her forehead, but a slight smile involuntarily crept onto her lips. She turned to look at Hyogoro.

"Mr. Hyogoro, please continue explaining the techniques of Ryuo."

These idiots want to learn Conqueror's Haki Entanglement, but at least we need to master Ryuo first before we can be of any help in battle.

Hyogoro nodded, picked up the stone again, and continued to explain the secrets of Ryuo.

Robin carefully put away Oden's voyage logbook and quietly thanked Hiyori.

Hiyori gave a slight bow and retreated back into the inner room.

The house quickly returned to its previous lively atmosphere.

Zoro continued honing his Ryuo with the edge of his sword, while Sanji kicked at a wooden stake in the corner.

Kidd repeatedly practiced his domineering penetration technique, using magnetism to attract metal shards to his arm.

Luffy squatted on the ground, holding a rock in his hand, and poured all his Haki into it.

No matter how much he trains, all Luffy can think about is the black and red lightning when Kaido swings his bat.

"I'm enveloped in Conqueror's Haki..."

He muttered to himself, threw the stone on the ground, and grinned.

"It must hurt a lot. But it's okay, I'm sure I can learn."