Casillas found it utterly tedious.
He had expected this so-called genius to show at least some talent, something to spark his interest and alleviate his boredom.
But it seemed he had overestimated things.
This supposed genius was nothing special.
Casillas glanced at Zhao Yu once more.
Seeing no reaction, he sighed in disappointment.
Who would have thought this "genius" was so ordinary?
How dull.
Sigh.
Such was the life of a Supreme Sorcerer—utterly monotonous.
Casillas pondered for a moment, then almost waved Zhao Yu away.
But when he turned back, his eyes widened in shock.
For Zhao Yu now held a transparent blade in his hand—the Spatial Blade.
How was that possible?
Casillas could not contain himself.
He stared, wanting to see more clearly.
His experience told him Zhao Yu's blade was indeed his signature Magic—the Spatial Blade.
"But how can this be?"
He quickly turned away so Zhao Yu wouldn't see his stunned expression.
The Spatial Blade was no simple trick.
True, he'd thought Zhao Yu lacked genius, but that was in comparison to Casillas himself.
For an ordinary Sorcerer, even grasping the theory of this Magic was beyond reach.
The Spatial Blade was an advanced application of spatial force: shaping spatial power with one's will into a usable blade.
Spatial force was notoriously difficult to manipulate—let alone forge into a cutting edge.
One misstep could harm the wielder.
It demanded the utmost mastery of both spatial force and mental power.
Yet here stood Zhao Yu, an apprentice—how could he possibly have done this?
Casillas's own students had trained for years without mastering it, despite his full efforts.
But Zhao Yu—how long had it been? Ten minutes? Half an hour at most?
Casillas felt his worldview shatter.
Even when facing a dimensional deity, he'd never been this shocked.
Was Zhao Yu even human?
How could he learn this Magic faster than its creator?
It made no sense!
Casillas racked his brains but could not fathom Zhao Yu's secret.
He forced his expression back under control and turned to watch.
Zhao Yu was twirling the Spatial Blade like a butterfly knife, the transparent edge fluttering at his fingertips with fluid grace.
Casillas forced himself to face him.
Then his features twisted in disbelief.
"Is this even human?"
He seethed inwardly.
Such control should be impossible!
He longed to pry open Zhao Yu's head and see how it worked.
Spatial Blade was no trivial Magic—mishandling it could injure the caster.
What looked simple was extremely difficult: the caster must constantly govern the blade's spatial power, keeping it entirely under control.
Such skill required at least a Supreme Sorcerer's mental strength.
He himself had only mastered it in his second year.
Yet Zhao Yu—in barely an hour—had reached this level?
Casillas was at a loss for words.
He had looked down on Zhao Yu—now he realized his grave error.
This boy was the true genius.
It was nothing short of astonishing.
Casillas's disbelief nearly showed on his face, but as a veteran Supreme Sorcerer, he quickly regained his composure.
Turning to Zhao Yu, Spatial Blade in hand, he said evenly,
"Not bad. Your control is passable."
Inside, he was screaming in shock, but he maintained his calm exterior—he could not afford to lose face before an apprentice.
"Thank you for your instruction, Master Casillas," Zhao Yu said respectfully.
Indeed, he was grateful—Casillas was generous, teaching him an extraordinary Magic and personally explaining it.
Casillas's War Aura even boosted Zhao Yu's experience gain.
Checking his system progress, Zhao Yu saw his Magic training had jumped significantly.
Had Casillas not betrayed the Supreme Sorcerers, he might have become Zhao Yu's lifelong teacher.
But alas—no future with a traitor, and no desire to be subsumed by Dormammu for twisted immortality.
Still, courtesy required Zhao Yu's gratitude.
Seeing Zhao Yu's sincere thanks, Casillas felt a measure of warmth.
Yet he remained unsettled.
Why could someone learn Magic so quickly?
He had long claimed the title of Kamar-Taj's top genius—and he had indeed trained faster than most.
As a disciple of the Supreme Sorcerer, he'd rapidly become the strongest Supreme Sorcerer himself.
But his speed paled in comparison to this monster.
An hour to master his signature Magic?
Casillas doubted even the Supreme Sorcerer could match that.
Worse, to preserve his pride, he could not voice his shock.
His smile stiffened.
"You're quite impressive," he said.
"With such talent, don't waste it—study Magic diligently."
"Don't let pride blind you."
"Always focus on mastering the fundamentals.
Go back and practice basic Magic some more."
"Thank you for your guidance, Master Casillas," Zhao Yu replied, bowing and turning to leave.
Casillas nodded.
"No need for further courtesy.
That's all for now.
If you have questions, come to me.
When I have time, I'll answer them."
"Compared to Wang, my level is not inferior."
Casillas kept his smile, yet Zhao Yu sensed something odd about it.
"Heh," Zhao Yu thought as he walked away—Casillas really is a good man.
If only he weren't such a betrayer, he would have been an excellent Sorcerer.
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