Leo looked at Gon and Killua, showing a mischievous smile.
"These two little guys need combat experience. You train with them."
Kastro looked at the two children; Gon was already eager to start, and while Killua appeared calm on the surface, his eyes also hid a sense of Battle Intent.
"Alright."
He nodded.
Gon immediately jumped up.
"Great!"
Killua had his hands in his pockets, the corners of his mouth curling up slightly.
"I'd like to see for myself."
Kastro glanced at him without saying a word.
The combat practice took place in the training room.
Wing stood to the side with Chiharu to watch.
Leo leaned against the wall with his arms crossed, watching the field.
Kastro stood in the center, his hands hanging naturally, his posture relaxed.
Gon and Killua took up offensive stances on his left and right.
"Begin."
Wing announced.
Gon was the first to rush out. His speed was startlingly fast, a straight punch aimed directly at Kastro's face!
Killua simultaneously cut in from the side, a Whip kick sweeping toward Kastro's waist!
The two coordinated perfectly, their offensive fierce.
Kastro moved.
He didn't use Nen; he simply turned his body, raised his hand, and parried.
Gon's fist grazed past his cheek, and Killua's Whip kick was lightly blocked by his palm.
Then he counterattacked.
Just one punch, an understated punch, landing on Gon's blocking arms.
Gon was sent flying back, crashing into the training room wall.
Killua's pupils contracted slightly; just as he was about to retreat, Kastro appeared in front of him.
A palm struck his shoulder; the force wasn't great, but it caused Killua to stagger back, nearly falling.
Less than ten seconds.
Both were repelled.
Gon jumped down from the wall and shook his numbing arms, the Battle Intent in his eyes growing even stronger.
Killua steadied himself, the nonchalance on his face completely vanishing.
"Again!"
Gon shouted.
The two lunged forward again.
This time, they had grown smarter.
No longer attacking head-on, they coordinated with each other—one feinting, the other launching a sneak attack.
Gon drew the fire in front, while Killua attacked from the side and rear.
Kastro remained relaxed.
His feet moved and his figure flickered, perfectly avoiding their attacks every time before counterattacking at the most opportune moment.
One punch, and Gon retreated three steps.
One palm, and Killua staggered to the ground.
But the two immediately scrambled up and rushed forward again.
Three minutes.
Five minutes.
Seven minutes.
They were repelled time and again, only to rush forward every time.
Sweat soaked their clothes and their breathing became labored, but their eyes grew brighter and brighter.
In the ninth minute, Killua seized a tiny opening in Kastro's defense and thrust a Hand-knife toward his shoulder.
Kastro sidestepped to avoid it, while simultaneously driving an elbow into Killua's ribs.
Killua let out a muffled groan and was sent flying.
Gon took the opportunity to pounce from behind, wrapping his arms around Kastro's waist.
Kastro was slightly taken aback, then exerted force from his waist to throw Gon off.
But the moment he was thrown, Gon clamped his legs around Kastro's arm.
Killua bounced up from the ground, a straight punch booming toward Kastro's face!
Kastro finally showed an expression of appreciation.
He grabbed Gon's ankle with his left hand and swung him toward Killua.
The two collided in mid-air and fell to the ground together.
"Not bad!"
Wing couldn't help but cheer.
At ten minutes, both fell to the ground and couldn't get back up.
Gon lay on the ground, panting heavily, but with a brilliant smile on his face.
Killua lay on his back, his chest heaving violently, the corners of his mouth turned up slightly.
Kastro stood where he was, his breathing steady, not even breaking a sweat.
"Not bad,"
he said.
Gon rolled over and sat up, his eyes sparkling.
"Mr. Kastro is so strong!"
Killua also sat up, looking at Kastro and then at Leo leaning against the wall, complex emotions surging in his heart.
If even a disciple is this strong, then the master...
To the side, Leo thought for a moment; with Kastro here, it made no difference whether he stayed or not, so he might as well go do his own thing.
He then walked over to Gon and Killua, looking down at the two sweat-drenched children.
"Your talent is very good, don't waste it. There are no shortcuts in the cultivation of Nen, but every bit of effort will not be in vain."
Gon nodded vigorously.
Killua turned his head away and muttered under his breath.
"I know that without you telling me."
Leo smiled.
He turned and patted Kastro's shoulder.
"Hard work. I'll leave them to you. I have some business."
Kastro nodded.
"Don't worry, Master Leo."
Kastro grumbled inwardly.
'Master Leo is different from one moment to the next; in the end, he's still going to leave...'
Leo looked at Wing again.
"Senior Brother, I'm heading out."
Wing waved his hand.
"Go, go, stop being an eyesore here."
Leo laughed and turned to leave.
His footsteps gradually faded away.
In the training room, Gon and Killua looked at the closed door and didn't speak for a long time.
Kastro's voice rang out.
"Rest for five minutes, then continue."
Gon and Killua looked at each other and stood up at the same time.
"No need for rest!"
Gon shouted.
"Come on."
Killua also stood tall.
"Then let's begin."
Kastro looked at the two children, the corners of his mouth curling up slightly.
After leaving Wing's room, Leo didn't linger.
Since Kastro was back, he could leave the rest to them.
A little guidance from him was enough; the rest required Gon and Killua's own efforts, and there was no need for excessive interference.
Moreover, with his guidance, he believed the two of them would become stronger faster than in the original plot.
As Leo walked toward the elevator, he pulled out his phone, found Vivian's number, and dialed it.
After two rings, the call was answered.
"Mr. Leo."
Vivian's voice came through the receiver, respectful and steady, with a touch of appropriate enthusiasm.
"I'll be heading over in a couple of days, get ready."
Leo said.
Vivian didn't ask questions.
"Understood. I will arrange everything."
The call ended.
Leo put away his phone and stepped into the elevator.
After so long, the Colton Gang should have collected quite a few creatures.
He needed to harvest a wave of experience regularly; the higher the Rank, the harder it was to level up, and this stable source of experience couldn't be cut off.
He walked out of Heavens Arena, hailed a taxi, and headed for the airport.
On the way, he opened his phone and booked a ticket to Tote City.
A day later, at Tote City Airport.
Leo walked out of the arrival hall, and a familiar sight met his eyes—a row of black sedans parked by the roadside, all luxury cars with dark-tinted windows.
Standing by the cars were several men in black suits, standing tall and expressionless.
Dean stepped quickly out of the crowd, came before Leo, and bowed his head slightly.
"Mr. Leo, it was a long journey."
Leo nodded and got into the car.
The convoy slowly started and drove out of the airport.
The street scenes outside the window flashed by, with high-rise buildings and heavy traffic.
Leo leaned back in his seat, looking out the window with a calm gaze.
Dean sat in the passenger seat, turned around, and spoke respectfully.
"Mr. Leo, this time we have collected over twenty-six thousand animals."
He paused, a hint of apology in his tone.
"Because some others were also buying animals in large quantities on the market recently, we slowed down the acquisition speed for fear of alerting them."
The corners of Leo's mouth curled up slightly.