Even before awakening his Nen Ability, Gon could easily send a 300-pound man flying dozens of meters. Now that he has awakened his Nen, his strength will only become greater.
And not to mention Killua; he possessed monstrous strength, capable of easily moving heavy iron chains even before awakening his Nen Ability.
Gon, panting, put down his huge backpack and looked at the bundle, but he didn't find Killua.
Looking ahead, he then realized Killua was walking from a distance, and as if nothing had happened, he smiled and waved at him, saying, "Yo, Gon, you're back."
"Killua, how did you make your body heavier just now? Tell me quickly!" Gon went straight to the point, completely ignoring Killua's pretense of just seeing him.
"It's very simple," Killua said with his hands in his pockets, looking relaxed. "Your 'weight' isn't just your body weight; it also includes the 'strength' you exert.
When you're stationary, your weight is your body weight, but once you exert force, the intensity of that force is added on. That's why you were able to push that 300-pound fat man flying."
Gon understood immediately. He had indeed tried similar things and instantly grasped the key.
"Kyle, why do we need so many people?" After understanding, Gon looked at the busy pirate crew and asked in confusion.
"Of course, it's for your training. Next, we will not only train Observation Haki but also lay a solid foundation for Armament Haki and Nen Ability."
Kyle knew that defeating Hisoka in just fourteen days would be almost impossible.
His real goal was to make Hisoka interested in other worlds. Hisoka was obsessed with one-on-one combat, but his talent and intelligence were impeccable, like a double-edged sword.
For Kyle, his abilities only took effect in other worlds, which meant that in the Hunter World, if Hisoka died, the power he gained from Hisoka would not disappear.
"Kyle, what exactly should we do?" Killua was eager to try.
"The entry to Observation Haki is simple: blindfold yourself and rely purely on your senses to dodge ordinary attacks until you can dodge them completely."
Killua found it very interesting and immediately covered his eyes with a cloth. Gon, with a mischievous smile, picked up a wooden stick: "Killua, I'm starting!"
"Come on," Killua said confidently.
Gon swung a stick at his head, and Killua, as if he had eyes in the back of his head, easily tilted his head to dodge. — The attack would create wind, and with a killer's keen hearing, it wasn't difficult to track its trajectory.
Kyle was not surprised. As a top assassin, Killua had an instinctive reaction to subtle changes in air currents, which was already the prototype of Observation Haki.
Seeing Killua pick it up so quickly, Gon's competitive spirit was ignited, and the speed of his stick swings suddenly increased.
The stick's afterimages formed a continuous blur, and the sound of it cutting through the air whistled.
However, Killua, with his eyes covered, moved through the stick's afterimages like a falling leaf in a strong wind, always narrowly avoiding them.
During the high-speed dodging, a new sensory ability seemed to grow within him. Was this Observation Haki? It was indeed amazing.
A pirate who accidentally caught sight of this scene was so startled that he dropped his axe, his mouth agape enough to fit an apple.
"Hey... hey! Look at that kid! He's blindfolded!" The other pirates looked over, their movements all freezing, and a collective gasp of cold air was heard. That speed and dodging ability completely exceeded their comprehension.
'Sure enough, Killua's combat foundation far surpasses Gon's.' Kyle secretly evaluated.
"Alright, Gon. Killua has already entered the threshold of Observation Haki. But our focus for these ten days is Armament Haki."
"What's the difference between Armament Haki and our 'Ten'?" Killua asked curiously.
"The principles are similar; both enhance offense and defense. But if used in combination, attack and defense will surely reach a new level.
Our first step is extreme physical fitness and impact resistance training, such as hitting trees with your body. The second step is the control of will and energy..."
Kyle then explained how to guide internal energy to specific parts of the body to form protection through breathing and mental concentration.
Gon listened, his eyes turning into a Uzumaki shape, and smoke seemingly rising from his head: "Will... will? Energy control? Kyle, can it be simpler? Like, just tell me how many stones to break?"
Killua, however, had a rough understanding after listening.
Kyle looked at Killua and remembered that Killua could now sleep through his second brother's flogging.
With such physical quality and strength, he probably already possessed the prototype of Armament Haki.
And in this world, just like Observation Haki, it was just one step away from being activated.
Sure enough, after a day of high-intensity training, Killua's right hand was the first to be covered in a deep black layer.
"This is Armament Haki!" Killua swung his blackened right fist, ecstatic. "How powerful would it be if 'Ten' were layered on top of this? Kyle, let's spar!"
Seeing Killua wanting to spar with him, combining Armament Haki and Ten, Kyle naturally didn't hold back.
The two instantly engaged, fists and feet clashing, muffled thuds echoing continuously. Their speed grew faster and faster, their figures intertwining.
After half an hour of intense fighting, they stopped, feeling thoroughly invigorated.
"That was exhilarating!" Killua felt an unprecedented sense of fulfillment.
Kyle also secretly nodded; possessing the training results of both of them, his Armament Haki foundation was even deeper.
However, Gon, who had been watching, was already eager to try. Their battle was simply too exciting; he also wanted to experience it.
Killua looked at Gon, who also wanted to fight, and then looked at Kyle, saying, "Me, or you?"
Kyle had no intention of fighting Gon, and he looked at Killua with a smile, saying, "You go, but be gentle."
Killua grinned mischievously, "I will."
Another half an hour passed. Kyle looked at Gon, who was already bruised and swollen, and said, "How is it? Have you felt the threshold of Armament Haki?"
Gon, completely unconcerned about his bruised and swollen face, mumbled indistinctly, "Almost. I can vaguely feel that threshold."
Kyle was most aware of Gon's current state. His and Killua's fight was not just about taking a beating; it was about finding a way to concentrate the power in the places where he was hit more effectively.
Gon possessed extreme focus. As long as he fixated on something, his instant concentration allowed him to see the essence of things more easily than others.
This is why, despite being far inferior to Killua in various fundamentals, Gon was able to gradually catch up to Killua.
As days of training accumulated, the pirates also found their use. They tirelessly picked up wooden sticks and swung them at Killua and Gon...
By the tenth day, both Killua and Gon's Armament Haki had reached the getting-started stage, allowing them to simply activate Armament Haki in specific areas.
And on the tenth day, they returned to the Hunter World. At this point, only four days remained until Gon's battle with Hisoka.