When it came to raw talent, Moro was indeed not as gifted as Kastro.
But every person has their own strengths.
After getting into the antique trade, Moro quickly realized he excelled at observation and analysis.
He applied this skill in the Sky Arena battles, which earned him the nickname "The Thinker."
Later, by experiencing true death multiple times through the Death Checkpoint, he developed an extreme sensitivity to killing intent and hostile intent—a skill far beyond just reading emotions from someone's Nen aura.
This ability once saved Menchi from an unexpected danger.
And finally, there was the matter of his Nen ability's purpose and direction.
Faced with the looming Death Checkpoint, Moro had designed his ability specifically to counter Phinks.
Each of these elements—the antique business, his keen observation, his experience with real death, and his need to surpass Phinks—fit together like puzzle pieces to create the Starburst Nexus ability.
It was an irreplaceable, one-of-a-kind masterpiece.
This was the magic of Nen.
It granted Moro something even more powerful than natural talent.
Using Starburst Nexus, Moro flawlessly copied Kastro's Tiger Fang Fist technique.
And because Moro's Nen control was superior, the replicated version was even sharper and more refined than Kastro's original.
This unnatural sight shook Kastro to the core.
"Come."
Moro's eyes flickered like starlight, his battle intent rising.
Although he no longer needed Kastro and Kalista to assist him in his revenge against Phinks, their master-disciple bond was already formed.
Even if Moro had changed his plans, he still carried the responsibility of a teacher.
If he was going to train them, then he would make sure they grew together.
They would push each other forward.
They would exchange knowledge—he would teach them Nen, and they would help him refine his martial arts.
With Starburst Nexus, this was completely possible.
Moro was eager to absorb all the combat experience he could from them.
Kastro took several deep breaths, forcing himself to calm down.
He assumed the Tiger Fang Fist stance again, his hands coated in a green-tinged aura, taking the shape of a tiger's open maw.
There was no need for words.
The moment Moro met Kastro's eyes, he knew the fight had resumed.
With the force of a charging tiger, Kastro lunged forward.
This time, Moro didn't retreat.
He met him head-on.
Their fists clashed.
The green-glowing Tiger Fang Fist collided against Moro's own replicated version, sending ripples of pressure through the air.
While Kastro's Nen had an offensive advantage, Moro held the edge in technique, precision, and raw Nen output.
It only took one second for Kastro's Tiger Fang Fist to start unraveling.
Sensing this, Kastro expertly disengaged, shifting into a defensive retreat.
This was the correct move, but—
It gave Moro the chance to counterattack.
Yet, Moro didn't move.
He let Kastro pull back and regain his footing.
Kastro frowned.
If this had been a real fight, he would already be dead.
The realization made his heart pound.
He had to fix this flaw.
Now.
Then, suddenly—
Moro unleashed his full Nen output.
Level 44—an overwhelming flood of aura exploded from his body, filling the entire arena with crushing pressure.
The sheer force of it shocked Kastro's system, his aura instantly destabilizing.
The Tiger Fang Fist, which he had worked so hard to maintain, began to collapse.
Moro had done this intentionally.
This was a lesson.
In Nen combat, your mental state and focus were everything.
Fear, doubt, hesitation—any of these could cause a fatal misstep.
A moment's weakness could mean death.
Kastro understood immediately.
His body refused to move, but his mind raced for a solution.
If he couldn't fix his mental weakness here—
Then he had no future as a Nen fighter.
He clenched his fists.
He forced himself to breathe.
And slowly—
The turmoil in his mind began to settle.
A few seconds passed.
Then, Kastro's eyes opened.
His aura, which had been shaky and unstable, now flowed smoothly around his body.
From below the ring, Kalista and Menchi both noticed the change.
Kastro had grown stronger.
Just from this one fight.
Moro smiled.
Kastro had overcome the first mental barrier in his Nen training.
Now, his Tiger Fang Fist was solid and refined.
"Master."
"Hm?"
"Meeting you... was the best thing that ever happened to me."
Moro chuckled. "You say things like that, but it sounds more like something Kalista would say."
Down below, Kalista didn't even deny it.
Instead, she stood up straighter, proudly nodding.
Beside her, Menchi let out a deep sigh.
"This whole master-disciple thing is insane..."
The fight resumed.
This time, Kastro's movements were sharper, stronger.
Yet, just as he closed the distance—
Moro attacked first.
Before Kastro could react, Moro's Tiger Fang Fist extended outward, forming a massive phantom tiger head that lunged forward, biting down on him.
Kastro had no time to react.
In the next instant—
He was flung into the air.
Below, Kalista and Menchi stared in disbelief.
Not only had Moro copied Kastro's technique in mere minutes,
He had enhanced it.
And used it to completely overwhelm its creator.
Lying on his back, Kastro stared at the ceiling.
A strange feeling welled up inside him.
This wasn't disappointment or frustration.
It was excitement.
For the first time, he truly understood—
Nen was limitless.
And he was only at the beginning.
Above him, Moro reached out a hand.
"Kastro."
"You did well."
And Kastro—
Smiled.
Below, Kalista clenched her fists.
Her determination burned stronger than ever.
She would never fall behind.
And beside her, Menchi sighed again.
"…Moro's ability to copy people is way too scary."
Then, after a moment—
She smirked.
"Well, at least I get to mooch off his fancy ingredients."
After all,
This was just their version of "mutual growth."
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