Lab Rat

The crow's training could not be completed overnight. He now had something troublesome to take care of.

He had not forgotten what he had promised Tsunade. Unfortunately, Yuu was either training at the Uchiha Compound or following Orochimaru on missions.

As a result, Tsunade's research progress had slowed considerably.

"Lady Tsunade, please listen to my explanation! I had my reasons!"

Uchiha Yuu swallowed. Just moments ago, a fist as big as a sandbag had landed beside his ear.

The explosive sound made his ears ring. He subtly turned his head and saw that the wall behind him was gone.

The nearby ninjas thought they were under attack and hurried over to investigate. The moment they saw Tsunade disciplining someone, they immediately scattered.

They wore pitiful expressions, yet none of them even dared give Uchiha Yuu a chance to ask for help.

What a joke! Tsunade's status was not something an ordinary ANBU member like them could interfere with.

"Heh, so your wings have grown in already? You refuse to listen now? It's only been a few days, and your answer was that you were strengthening your abilities? You even shut your door and refused to see me?"

Tsunade grabbed Uchiha Yuu by the collar. An aura of death surrounded him, and he genuinely worried that Tsunade would punch him in the chest.

There was precedent! Jiraiya was the best example. People could die from this!

"Of course not. It involved Sunagakure, so it had to be prioritized. I was following Teacher Orochimaru's orders."

Hearing that it involved Sunagakure, Tsunade finally put him down.

"I'll give you one chance. If this happens again, you're dead!"

"Besides, I didn't call you here for experiments. I want you to study Medical Ninjutsu with me. Recently, all the ninjas who learned the Healing Technique will undergo centralized training."

She briefly explained the Medical Corps' arrangements. Even Tsunade had to acknowledge Uchiha Yuu's talent for Medical Ninjutsu. He was an exceptionally rare medical talent.

Thinking of that, Tsunade felt a little resentful. According to what had been said when the teams were assigned, Uchiha Yuu should have been taught by her. Yet he had ultimately been assigned to Orochimaru. What a waste of resources!

With Orochimaru's cold personality, what did he know about teaching students?

Tsunade led Uchiha Yuu into the classroom, where only five people were sitting and waiting for her.

"Lady Tsunade!"

"Lady Tsunade!"

"Good morning, Lady Tsunade!"

Unlike Uchiha Yuu, who had arrived late, those selected to become medical ninjas had come to the classroom at the earliest opportunity.

Being able to study under Tsunade was a blessing!

"Hello."

After a large-scale screening process, only a handful had met the requirements. Even so, Tsunade was overjoyed. She believed Medical Ninjutsu would certainly flourish in Konoha.

Her gaze settled on them. Tsunade needed to begin teaching Medical Ninjutsu anew.

For Yuu, it was more like reviewing what he had learned. Much of the knowledge Tsunade taught had been covered when he was young.

After a full day of class, Uchiha Yuu felt dizzy. He wanted nothing more than to find somewhere to collapse and sleep.

"Lady Tsunade, why have they all left while I'm still not allowed to go?"

He shot her a resentful glance. Tsunade had him completely under her thumb. After all, he had benefited from her kindness.

He had learned the Healing Technique and the Monster Strength Fist, though he had won them through a gamble. Still, Uchiha Yuu was not satisfied.

He wanted more, such as the advanced Mystical Palm Technique and the Chakra Scalpel. At present, only Tsunade knew those advanced Medical Ninjutsu.

"Why would I let you leave? Go inside and take off your clothes in a moment."

"?"

Uchiha Yuu took a step back. He was only ten years old, and he hurriedly refused.

"This is a crime..."

Smack!

Tsunade slapped him on the head and said with a dark expression,

"Take off your upper clothes! Idiot! I need to examine you! Did you trick Nawaki into wearing weighted training gear last time?"

"Those monster-level weights aren't something someone your age can handle."

She lowered her head and stared at Uchiha Yuu. Such heavy training gear could genuinely crush someone to death, but according to Nawaki, when Uchiha Yuu removed his weights, they had been even heavier than Nawaki's.

Nawaki's words had once again piqued Tsunade's interest.

She guessed that the reason his body could achieve such things was because it contained some unknown substance. This unknown substance allowed Uchiha Yuu's body to grow stronger rapidly and repair damaged injuries.

"That bastard Nawaki. I didn't think he'd actually go and do it after returning."

Damn it, Nawaki. Did you have to do it right in front of Tsunade while training?

Now I've become Tsunade's experimental material!

Thinking of his little white rabbit, he feared that he would suffer even more than it next.

He hardened his resolve. The next time they met, he would definitely teach Nawaki a proper lesson!

"Yes. If I hadn't been there, that brat wouldn't have been able to get back up."

Several weighted training tools lay beneath the table. Tsunade fitted them onto Uchiha Yuu, and seeing that he could walk normally, she confirmed that Nawaki had been telling the truth.

"Lady Tsunade, there's no need to be surprised. You adapt to this kind of weight gradually. Nawaki simply wanted to reach the sky in one step. It requires long-term, persistent training, and it will noticeably improve taijutsu."

Yuu thought of a taijutsu genius. Unfortunately, judging by his age, he should have only just been born?

"There's a Genin in the village named Might Duy. He's a taijutsu genius. When he unleashes his full strength, he can even display power no weaker than Kage-level!"

"Hm?"

Listening to him, Tsunade had not known there was such a strong person in the village.

She herself had mastered taijutsu, but she still relied on chakra's special exertion techniques.

The Hyuga Clan also relied on the special techniques of the Gentle Fist to deal with enemies.

She acknowledged that taijutsu was an inseparable part of a ninja's abilities. However, compared with powerful ninjutsu, relying solely on the body could not grant someone the ability to fight a Jonin.

"If I have the chance, I'll get in touch with him."

"And stop changing the subject. I need to examine you."

Unfortunately, she still found nothing. Looking at the equipment in Tsunade's laboratory, Yuu could tell it was already fairly sophisticated, but it could not detect radioactive elements. It would only reveal their effects on the body.

"By the way, Lady Tsunade, I need to borrow your laboratory for some experiments."

Although radioactive elements could not be detected, cellular changes could still be observed. Uchiha Yuu needed to use the equipment to test the Healing Technique's capabilities.

Destroying and reshaping cells were both extremely dangerous matters. Without precise equipment, it would be impossible to do.

"You want to borrow my laboratory?"

Tsunade gave him a suspicious look and said with slight displeasure,

"You're Orochimaru's student. Why do you need my laboratory? I remember Orochimaru has plenty of experimental equipment."

It was not that he did not want to borrow it. Even though Orochimaru was his teacher and his personality had not yet become twisted, if he found out, Uchiha Yuu would definitely be pinned to an operating table.