Pupil Power Breakthrough: Two Tomoe Appear

In the Uchiha training ground beneath the night, lightning intertwined with blood-red light. Ling pushed his Sharingan to its limit while carefully guiding the curse mark's energy.

[Sharingan evolution progress: 28%...31%...35%...]

[Warning: Curse mark energy approaching critical threshold]

[Recommendation: Stop immediately, or loss of control may occur]

Ling gritted his teeth and held on. He could feel it—he was just a little short of breaking through the bottleneck. The single tomoe in his left eye spun wildly, and the world in his vision became even clearer. Even the flow of chakra in the air stood out in sharp detail.

"Still not enough..."

He thought back to the battle with the Sound Ninja Four, to the instant Sasuke had nearly fallen into darkness, to his vow to protect Konoha. Intense emotions surged in his heart, and the Sharingan resonated in response.

[Strong emotional energy detected]

[Sharingan evolution progress: 45%...50%...]

Suddenly, a tearing pain shot through his left eye. Ling gave a muffled groan and dropped to one knee. But after the agony came a clarity he had never felt before.

The single tomoe in his vision split into two and slowly rotated. Two-Tomoe Sharingan, open!

[Sharingan upgraded: Two-Tomoe]

[New abilities obtained: Dynamic Vision Enhancement, Genjutsu Analysis]

[Sharingan evolution progress: 5%]

Ling stood up, panting, and felt the changes brought by the two tomoe. Everything around him seemed to slow down. He could even see the path of leaves falling in the distance.

"So this is the power of the two tomoe..."

He tried using his new abilities. With the aid of dynamic vision, his Lightning Flash Body grew faster once more. And Genjutsu Analysis allowed him to see through the structure of most genjutsu.

[Ding! Hidden achievement completed: Sharingan Advancement]

[Reward: Uchiha Style: Sword Flame Leap]

Knowledge of the Uchiha Style fire release sword technique poured into his mind. It was an advanced technique that attached fire release chakra to a sword, perfectly suited to work with his two-sword style.

Ling immediately tried to perform it. Lightning release chakra leaped across his twin blades, then transformed into blazing flames. The interweaving of lightning and fire created a unique method of attack.

"Lightning-Fire Dual Release: Flame Lightning Slash!"

The twin blades swung out, and a slash of mingled lightning and fire split a training stake in the distance in two. Its power and speed far surpassed before.

***

The next day, Ling demonstrated his newly gained abilities to Kakashi at the training ground.

"Two tomoe..." Kakashi carefully observed Ling's eyes. "That rate of advancement is quite astonishing."

Ling used Lightning Flash Body, his figure flickering rapidly across the training ground. With the support of the two tomoe, his movement path became even harder to predict.

"Looks like we need to adjust the training plan." Kakashi formed hand seals. "This time, I'll take it seriously."

The light of Lightning Cutter flashed, and Kakashi's speed suddenly increased. But under the dynamic vision of the two tomoe, Ling could barely keep up with his movements.

"Lightning Release: Lightning Tiger Tracking Fang!"

The lightning tiger collided with Lightning Cutter, erupting in dazzling light. This time, Ling was not immediately suppressed, but held his ground against Kakashi for several seconds.

"Not bad." Kakashi put away Lightning Cutter. "The two tomoe have raised your reaction speed by a level. However..."

He suddenly appeared behind Ling. "The Sharingan has blind spots too. If you rely too much on vision, you'll neglect your other senses."

Cold sweat ran down Ling's back. Even with the two tomoe activated, he had still failed to catch Kakashi's movement path.

"Next, you need to learn how to switch between vision and perception in battle," Kakashi said seriously. "A true expert won't rely on only one ability."

Under Kakashi's guidance, Ling began all-directional perception training. He tried to use other sensory methods while keeping the Sharingan active.

The process was exceptionally difficult. The powerful vision brought by the Sharingan often interfered with his other senses, and balancing them required extremely strong control.

[Perception coordination training in progress]

[Progress: 15%...27%...]

With the system's assistance, Ling's rate of improvement was astonishing. In just three days, he was already able to maintain basic sensory acuity while using the Sharingan.

***

One week later, Ling welcomed his first practical combat test. His opponent was Might Guy, who had come specifically for a spar.

"Yo! Kakashi's disciple!" Guy raised a thumb. "Let me see the power of the Uchiha!"

"Please teach me, Teacher Guy."

The battle began, and Guy immediately opened the first gate of the Eight Gates. He was extremely fast, but within the vision of the two tomoe, Ling could see his movements clearly.

"Leaf Whirlwind!"

Ling dodged with Lightning Flash Body while observing Guy's chakra flow. With the aid of the two tomoe, he could predict Guy's next move.

"Now!"

The instant Guy landed, Ling launched an attack. Lightning-Fire Dual Release intertwined on his blades and drove straight toward Guy's opening.

"Not bad!" Guy laughed loudly. "But you're still far off!"

The second gate opened, and Guy's speed rose again. This time, even Ling's Sharingan could not keep up with his movements.

"So this is... the strength of a jonin..."

Ling was forced to switch from offense to defense, struggling to hold on under Guy's fierce assault. But it was precisely this pressure that made his Sharingan grow further.

[Sharingan evolution progress: 12%...15%...]

By the time the battle ended, Ling was completely exhausted, but his gains were great. Guy's taijutsu gave him a new understanding of combat.

"Young man, you have great potential." Guy patted Ling on the shoulder. "Keep working hard. The future Konoha will need your generation."

Watching Guy's back as he left, Ling clenched his fist. The two tomoe were only the beginning. He still had to become stronger.

That night, the system issued a new mission:

[Main mission updated: Master the Mangekyo Sharingan]

[Mission requirement: Reach 100% Sharingan evolution progress]

[Time limit: One year]

[Reward: Exclusive pupil technique awakening]

Ling looked at the bright moon in the night sky, his heart filled with determination. To protect the people important to him, he had to obtain even greater power.

And far away in the Akatsuki Organization's base, Obito seemed to sense something as well.

"Two tomoe, huh..." he murmured to himself. "He's growing even faster than expected. Looks like the plan needs to be adjusted."

A new storm was quietly brewing.

(The End of Chapter Thirty-Nine)