Tactical System

After his ninjutsu aptitude reached 9 points, Tianyi's perception and control over his own chakra rose to an entirely new level.

It was a transformation from "proficient" to "meticulous." Chakra was no longer merely flowing energy.

It felt more like an extension of his limbs; the strength, frequency, and form of every strand were as clear and controllable as the lines on his palm.

He was certain that he now qualified to cross the stringent threshold Tsunade had previously set for chakra control.

During a break between missions, he found Tsunade drinking at an izakaya.

"Master." Tianyi approached, his voice calm.

Tsunade turned her head. Seeing him, the irritation on her face had yet to fade.

"Finished filing your mission report? Why aren't you resting? What are you doing here?"

"No, I came for training." Tianyi shook his head and held out his palm, facing upward.

"My chakra control should meet your requirements now. Please test me, Master."

"Oh? Come with me." Tsunade raised a brow, finally showing a little interest.

The two then arrived at the training grounds of the Senju Clan Grounds.

Without further ado, she extended her right index finger, gathering a concentrated azure point of chakra at its tip, almost solid in appearance.

"Same rules. Maintain and alter the chakra sphere in your palm while I interfere.

If its form goes wrong, its structure collapses, or you fail to keep up with my commands, you fail.

Begin when you're ready."

"Yes." Tianyi focused. A sphere of chakra, equally azure but gentler in appearance, swiftly rose from his palm and hovered silently.

The test began at once. The point of light at Tsunade's fingertip moved.

At times, it became a needle, carrying sharp, penetrating chakra as it tried to pierce Tianyi's chakra sphere and disrupt its stable