Naruto: They Have Systems

"That's amazing! This is the first time I've seen Yin use Ninjutsu. Did he really only start learning it a few days ago?"

Kushina sounded stunned. She could even tell that Uchiha Yin's Great Fireball Technique was stronger than the one Uchiha Mikoto had used earlier.

The rewards Uchiha Yin received from the system combined those earned through Kushina, Mikoto, and Tsunade. His strength had grown so quickly that, before anyone realized it, he had surpassed Uchiha Mikoto.

"Not bad Fire Release, but it's still not enough."

Tsunade smiled faintly at Uchiha Yin's Fire Release. Then she clenched her right fist and punched straight at the fireball.

Her fist seemed to meet no resistance at all. It scattered the fireball in a single blow.

That's Tsunade for you. She took a Ninjutsu head-on with her fist and didn't get a scratch.

Uchiha Yin's mouth twitched at the thought.

"Where are you looking?"

After scattering the Great Fireball Technique, Tsunade rushed in front of Uchiha Yin and threw a punch at him.

So fast! By the time Uchiha Yin reacted, Tsunade was already right in front of him.

Tsunade might not have been a speed-focused Ninja, but she was by no means slow.

Uchiha Yin had never fought an expert before, and he wasn't used to speed like hers.

Tsunade's fist struck Uchiha Yin, but she didn't feel it hit flesh.

A puff of smoke burst out. Uchiha Yin turned into a wooden log, which fell to the ground.

"Oh, that was a quick Substitution Technique."

Tsunade turned toward Uchiha Yin on the other side and smiled.

That was close. Good thing I'm practiced with the Substitution Technique, or that punch might have turned me into mincemeat.

Uchiha Yin was secretly relieved. He had no desire to take one of Tsunade's