[A/N: The working of Armament Haki is mostly explained in the series, but a specific training method for Armament Haki is not described in much detail. Other than the fact that Armament Haki involves coating a body part or a weapon with one's willpower, there is little explanation. Since it uses the body as a medium, stamina drains more and more as greater amount of Haki is used. Conversely, Haki gradually recovers as physical stamina recovers. Based on this understanding, I am creating the following training method: Feel Will/Spiritual Power ➡️ Learn Channeling it ➡️ Use Coating (Armament Haki)... Comment if you guys agree.]
Gojo reached up and removed his sunglasses.
His sky-blue Six Eyes were revealed, instantly taking in the entire forest. With their near-thermal, analytical vision, layers of information flooded his perception—heat signatures, movement, hidden presences. He calmly scanned through the dense foliage, searching for the source of the voice.
He found it almost immediately.
With a sharp swish, Gojo vanished from where he stood. In the next instant, he appeared atop the head of the massive elephant with tiger-striped skin, using the bewildered creature as a brief platform. He leapt forward, landing lightly on a tree branch, then another, his movements fluid and effortless as he crossed the forest canopy in a blink.
Moments later, Gojo arrived at the exact spot from where the voice had come.
As he landed and looked ahead, his expression shifted—just slightly, but enough to show genuine surprise. He had expected the speaker to be hiding underground, perhaps concealed in a pit or burrow to mask their presence.
Instead, what he saw made him pause.
A man… trapped inside a treasure chest.
The sight was so absurd that Gojo stared at him for a moment before speaking. "Who are you?" he asked. "And how the hell can anyone fit inside a treasure chest? Were you this short from the very beginning?"
This strange man was none other than Gaimon.
The moment Gaimon realized that Gojo had located him so easily—and appeared before him in mere seconds—he understood that this young, white-haired man was no ordinary pirate. The pressure, the movement, the way he had crossed the forest… all of it screamed danger.
Gaimon wasn't Gojo's friend, nor did he have any intention of becoming one so easily. He wasn't about to reveal anything without knowing who he was dealing with.
So instead of answering Gojo's questions, Gaimon asked one of his own. "What is your objective in coming to this island?"
As Gaimon spoke, the animals began to close in around Gojo. Hostility was clearly visible in their eyes, their low growls rumbling through the air as they lowered their bodies and took attacking stances. Claws dug into the soil, massive forms shifting restlessly, ready to strike at the slightest signal.
Gojo, however, showed no fear at all.
He glanced briefly at the surrounding creatures before looking back at Gaimon and said calmly, "I came here only to train. But after seeing you—and finding someone as strange as you—I'm now curious. I want to know your story. How exactly did you end up inside that treasure chest?"
Hearing this, Gaimon felt a wave of relief wash over him. Still cautious, he asked for confirmation, "You're not here to hunt the animals on this island?"
"No," Gojo replied without hesitation. "I'm not. I came here to train. This island isn't inhabited by humans, so it's perfect for that."
After hearing Gojo confirm it a second time, the tension finally left Gaimon's shoulders. A small smile appeared on his face as he said, "That's very good to hear. I was afraid you might be here to hunt them."
He paused for a moment, then continued, "As for how I got trapped inside this treasure chest… it happened like this."
Gaimon began recounting his story. Long ago, he had arrived on this island with his pirate crew in search of treasure. They searched everywhere but found nothing—until one day, Gaimon spotted five treasure chests perched high atop a tree. Excited, he climbed up, intending to inform his crew as soon as possible. But before he could do that, he slipped, fell from the tree, and landed straight into the open chest below.
He had been stuck inside it ever since.
Gaimon also mentioned that a few days earlier, a young boy named Monkey D. Luffy had come to the island. Luffy had helped him retrieve those treasure chests, but unfortunately, when they finally opened them, there was no treasure inside at all—only empty boxes.
Finally, when Gaimon finished speaking, Gojo was already sitting on a fallen tree trunk. He smiled lightly and said, "I should say your perseverance is impressive. But I should also say it was foolish. You should have left with your crew in the first place." He paused briefly, then added, "But still, it looks like you've found a good new life here with these animals. You're doing well, all things considered."
Hearing this, Gaimon nodded and replied, "Yes, you're right. They're all my best friends now. I can't even imagine leaving this island anymore—though it was a nightmare for me in the early days, after I got stuck in this treasure chest."
As the sky gradually darkened and evening settled over the island, Gaimon brought out plenty of fruits along with his handmade wine. A small, simple feast was laid out, and Gojo accepted it without hesitation. He enjoyed the quiet gathering, eating and drinking at ease. The strange rabbit-snake he had kicked earlier still glared at him resentfully from a distance, but Gojo paid it no mind, far more focused on the food and the wine in his hands.
Once he was done drinking, Gojo stood up and decided to return to his ship to sleep. He wasn't completely drunk like he had been back in Cocoyashi Village. Although Gaimon didn't seem like a bad person—and clearly wasn't a threat—caution was still paramount. Gojo was alone out here in the sea, and he couldn't afford even a single mishap. One careless mistake could cost him his life the next day.
With that in mind, Gojo returned to his ship and lay down to rest. Even in sleep, his Observation Haki remained active, silently monitoring his surroundings, ready to wake him instantly if any danger approached or if someone with malicious intent tried to attack.
The next morning, after waking up, Gojo found a secluded place on the Island of Rare Animals—or more precisely, Gaimon helped make one for him. At Gojo's request, Gaimon instructed all the animals not to approach within fifty meters of the area where Gojo would be training. With the surroundings cleared and quiet, the place became perfectly suited for concentration.
Gojo sat down and entered meditation.
He positioned himself in front of a tree and closed his eyes. Slowly, he began to feel the spiritual power within his body—the same presence he had sensed many times before during training. To be precise, he had first become aware of it when he mastered the "breath of all things" in swordsmanship. From that moment on, he had always been able to feel it, flowing quietly inside him. What he had never realized was that this power could be consciously channelled and coated over the body.
Focusing deeply, Gojo tried to move that spiritual power, guiding it toward his hand.
At first, it was difficult.
For his initial attempts, he could only disturb it slightly, make it tremble and shift. He managed to move it through his body and bring it to his hand, but he couldn't spread it evenly or coat his hand completely. It slipped away each time, refusing to settle.
Gojo didn't give up.
He continued again and again, refining his control, adjusting his focus. Hour after hour passed, the sun slowly moving across the sky. As more and more time passed, his Six Eyes began to play a crucial role. With their precise perception, he could finally see and understand the flow of his own spiritual power, allowing him to guide it with far greater accuracy.
By evening, he succeeded.
Gojo was able to move his spiritual power and fully coat his hand. Soon after, he coated both of his fists with Armament Haki. He raised one fist and examined it closely. From the outside, it looked no different—no colour change, no visible sign. Everything appeared the same as before. But Gojo knew. There was a distinct, solid layer of Haki covering his hand.
He drew back his fist and punched the tree in front of him.
The impact was immediate. A sharp crack split through the trunk, and the tree tilted before crashing down onto the ground. Gojo looked at the fallen tree and said, "With Armament Haki, the strength behind my fist has increased by a lot compared to a normal punch."
He was clearly satisfied—both with the results and with the speed of his progress. At the same time, he felt fortunate. If I didn't have the Six Eyes, he thought, there's no way I could have mastered Armament Haki in a single day… and this quickly.
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