After speaking, Arata felt he should give Sasuke something truly valuable...otherwise, he'd feel a bit guilty toward Mikoto, who had always treated him kindly.
His expression turned serious as he stared into Sasuke's eyes.
"Now listen carefully. What I'm about to teach you is a top-secret technique."
Sasuke instantly straightened, his face solemn.
"You are very lucky," Arata continued, "because you were born with lightning-attribute chakra, which is extremely rare.
This gives you the necessary foundation to cultivate this secret technique."
"However, it is extremely difficult to get started. I will first help you enter the initial stage through another method. After that, everything will depend on your own perseverance."
"This technique involves immense pain during training. Whether you can endure it and continue forward depends entirely on your will."
Uchiha Arata looked at Uchiha Sasuke and asked seriously, "This secret technique is extremely painful to practice.
There is no shortcut. You can only rely on your own willpower to persist. Think carefully....do you truly want to cultivate it?"
After hearing Arata's words, Sasuke fell into deep thought.
Although he was still young, his status within the Uchiha clan was already very high. His father was the clan leader, and his brother was a famous prodigy.
In truth, if he lacked ambition, he could easily live a comfortable life under their protection, never worrying about being bullied or oppressed.
But he was an Uchiha.
Flowing through his veins was the proud bloodline of the Uchiha clan.
He refused to remain sheltered by his father and brother forever, and even more so, he did not want to live under his brother's shadow for his entire life.
Now, a rare opportunity stood before him.
He had two paths to choose from.
One was to continue training step by step as before, steadily becoming stronger.
In this way, he would eventually become a capable ninja, but the chances of surpassing his brother would be slim.
The other path was to cultivate the secret technique entrusted to him by Uchiha Arata. Though the process would be extremely painful, it offered the possibility of leaping far ahead.
Sasuke raised his head and looked directly into Arata's eyes. Without hesitation, he asked, "Sensei, if I cultivate this secret technique, how strong can I become? Can I surpass my brother?"
Arata pondered for a moment before replying, "I cannot guarantee that you will surpass your brother.
After all, while you grow stronger, he will also continue to improve. Uchiha Itachi is a true genius, and no one can predict his future achievements."
"However, I can tell you this...if you persist and cultivate this secret technique to great perfection, then at the very least, you will reach Kage-level strength, and even stand at the very peak of that realm."
Upon hearing this, Sasuke clenched his fists tightly. His eyes burned with determination.
"Sensei, I will practice this secret technique. Please guide me."
Seeing his firm resolve, Arata nodded. "Sasuke, one day, you will be proud of the choice you made today."
As he finished speaking, Arata suddenly opened his Eternal Mangekyō Sharingan.
His gaze locked onto Sasuke, and he activated a rarely used ocular technique—Illusion: Instant Space-Time.
This technique had originally been copied from Uchiha Fugaku. Because excessive use of Mangekyō techniques could damage the eyes, Fugaku rarely employed it, let alone used it extravagantly for teaching.
Since acquiring it, Arata had almost never used this technique, except once to let an elder experience a brief illusionary entertainment.
The ability somewhat overlapped with Itachi's Tsukuyomi, though Tsukuyomi caused far greater mental damage. This overlap made Arata even less inclined to use it.
However, in Arata's view, this illusion technique was perfectly suited for practicing dangerous secret or forbidden techniques—especially Thunder Release Armor.
The difficulty of cultivating Thunder Release Armor lay in the violent nature of lightning chakra.
Even a slight mistake during training could cause serious bodily injury, forcing long recovery periods.
Severe errors could permanently cripple the practitioner, requiring them to start over—or worse.
In contrast, training within an illusion allowed the mind to experience the process fully. Even if mistakes occurred, the pain would be real, yet no physical harm would be inflicted. This ensured rapid improvement without lasting damage.
As Arata activated the technique, the spiritual bodies of both master and student were pulled into a specially constructed illusionary space. Since Sasuke posed no resistance, Arata skipped environmental construction and directly recreated his usual training grounds.
Unlock 350+ Chapters via My Patreon Collection
✨ Available in Shop Now
patreon.com/HeavenlyYinYang