Akira's expression became subtle.
"So this is Observation Haki? It isn't purely mental perception. It feels more like an advanced extension and transformation of the five senses combined with spiritual power. Quite fascinating."
"With this, my sensory ability has improved tremendously."
Compared to psychic perception, this was far more concealed and covered a wider range.
At the same time, because Akira had previously obtained all of Enel's Devil Fruit development experience when he ate the Rumble-Rumble Fruit, that naturally included Mantra as well.
Before this, because he lacked Observation Haki, he had been unable to properly display the effect of Mantra.
But now things were different.
After briefly testing it, Akira discovered that by combining the Rumble-Rumble Fruit's electromagnetic wave ability with Observation Haki, his perception range directly expanded to a diameter of ten kilometers.
It was utterly terrifying.
However, the changes were not over yet.
Immediately afterward, an overwhelmingly terrifying aura and pressure erupted from Akira's body and descended with a boom.
The air itself seemed to distort from the shock. Dust flew across the ground, and cracks spread outward in every direction with Akira at the center.
"Crack! Crack!"
Even the ground began splitting apart.
Conqueror's Haki had awakened.
At that moment, Akira subconsciously drew the chakra long blade from his waist and effortlessly wrapped Conqueror's Haki around it.
The chakra long blade seemed to be plated in a layer of crimson light, releasing a terrifying aura.
Immediately afterward, Akira also felt a unique power surging from the cells throughout his body under the effects of the warm current. With a thought, he guided that power out and covered his body with it.
His body instantly looked as if it had been coated in a layer of black paint.
Akira also tried wrapping this power around the chakra long blade in his hand.
The blade was immediately dyed black as well.
"Armament Haki awakened too! But sure enough, things aren't that convenient. I didn't obtain Whitebeard's full Armament Haki directly. Although the usage methods and training experience are all still there, I can only unleash Armament Haki power that matches my own physique."
"Still, that's normal."
After all, he had not directly obtained Whitebeard's complete physical strength.
He tested it briefly and confirmed that he could use techniques such as Armament Haki coating, shockwave projection, and internal destruction.
However, Ryuo—or rather, the higher-level applications of Armament Haki—were still beyond him.
That thing apparently also had physical requirements.
How annoying.
"No need to rush. I'll take it slowly."
Akira comforted himself, then turned his attention toward the remaining four items.
[Mihawk's Swordsmanship Experience Crystal]: Contains all of Mihawk's swordsmanship training experience and techniques. Upon fusion, the user may obtain Mihawk's swordsmanship inheritance.
[Mihawk's Swordsmanship Experience Crystal]: Contains all of Mihawk's swordsmanship training experience and techniques. Upon fusion, the user may obtain Mihawk's swordsmanship inheritance.
He had nearly overlooked one more item earlier.
This thing had come from Mihawk, which made perfect sense.
"Perhaps the world will of the One Piece world felt those swordsmanship manuals could unleash their greatest value in Mihawk's hands and further push the development of swordsmanship in that world?"
"Or maybe… this was also prepared for Zoro?"
Akira thought about it suspiciously.
After all, at this point in time, that road-lost green-haired mosshead Zoro had already been sent flying to Mihawk's lair by Bartholomew Kuma.
Once Mihawk returned, he would probably meet him soon.
If things followed the original timeline, Zoro would most likely end up begging Mihawk to teach him.
At that time, Mihawk would probably teach Zoro the Thousand Hands Swordsmanship Notes and the Hatake Swordsmanship Notes as well.
Especially the Hatake Swordsmanship Notes.
Inside them were not only the family sword techniques Sakumo Hatake had taught Akira, but also Thunder Breathing and its matching sword forms, all of which Akira had written into the manual.
The Breathing Style system was probably the most important thing for the One Piece world.
Perhaps in the Demon Slayer world, it had already reached its martial ceiling.
But if placed in the One Piece world, it might undergo a qualitative transformation.
Because that world's vitality, blood energy, and nutritional resources were simply too abundant.
Under such rich nourishment, the physical enhancement brought by Breathing Styles would become even more terrifying.
Akira had personally experienced this point himself.
Over the past year or so, he had exchanged for Sea King meat and fierce beast meat from the One Piece world several times.
He knew very well how powerful those things were when combined with Breathing Styles.
Immediately afterward, Akira chose to fuse with Mihawk's Swordsmanship Experience Crystal.
In an instant, countless images and insights of sword training appeared in his mind, along with battle experiences using the sword, the swordsman's realm of hearing the breath of all things, the realm of cutting iron, the flying slashes of a Great Swordsman… and finally, the state of cutting nothing and cutting all things at will—combining hardness and softness, releasing and restraining freely according to his heart.
The aura around Akira became increasingly sharp.
After a long while, Akira opened his eyes.
His gaze was so piercing that if anyone looked into his eyes right now, they would likely feel a stinging pain.
"So this is the realm of a Great Swordsman? It's truly powerful. And Mihawk isn't just an ordinary Great Swordsman either. He has clearly already reached the peak of that level."
"Amazing!"
Akira knew he had made an enormous profit this time.
His swordsmanship had surpassed his teacher, Sakumo Hatake, in one leap.
The ninja world actually had its own swordsman realm as well. At present, Sakumo Hatake was in that realm.
So was Mifune of the Land of Iron.
As for whether there were any other swordsmen at that level, Akira was not sure.
However, there probably were.
Even if nowhere else, the capitals of the various great nations likely had hidden experts.
With a thought, Akira teleported over two ordinary iron swords.
He tried sensing the breathing rhythm of one of the swords, then used the other iron sword to slash across it in an instant.
"Clang!"
The iron sword was instantly cut into two pieces.
The cut was smooth and perfectly neat.
Then Akira waved his sword several more times toward the distant stone mountain.
One flying slash after another shot out and carved across the stone mountain, leaving behind several deep, long cutting marks.
Each mark was basically several meters deep.
Its power was clearly visible.
Without using chakra and relying solely on physical strength and swordsmanship, he could still unleash flying slashes with such terrifying force.
Sure enough, no system of power could be underestimated.
Akira was extremely satisfied with the swordsmanship of the One Piece world.
"Unfortunately, it's still a matter of physique. I can't fully unleash the power this swordsmanship should have."
Akira shook his head.
In addition, his body had not yet adapted to Mihawk's swordsmanship experience.
He needed long-term adaptive training to temper every muscle in his body to the proper level of strength and flexibility before he could truly unleash the full might of this swordsmanship.
Right now, although he could already release flying slashes, their power was still much weaker than they should be.
Afterward, Akira turned his attention toward the remaining three items.
"I no longer have much use for Blackbeard's Haki Experience Crystal. It might provide some new insights, but its value to me isn't that great. In terms of dual-color Haki, Blackbeard can't possibly surpass Whitebeard."
"I'll leave it for someone else to use… or maybe give it to Pikachu?"
Akira hesitated slightly, then simply placed it inside the Treasure Pavilion of his personal space for now.
He would decide after thinking it through properly later
To Read 150+ Advance Chapters Head Over To My Patreon
patreon.com/ted11
[1 week Patreon & Shop Discount!
Hey everyone!
For the next 1 week, I'm giving a 25% discount on all Patreon memberships.
Also, there is a 50% discount in the shop for this collection.
So if you were planning to read advanced chapters, join Patreon, or support the novel, now is the best time.