Naruto: Blade of the Sharingan

"Lady Tsunade, are you alright?" Shizune worriedly shielded Tsunade, placing herself in front of Uchiha Nagi.

Though she had followed Tsunade for many years, her own strength was only at the level of a Jonin, or perhaps close to a Special Jonin. Facing someone who had awakened the Uchiha clan's legendary Mangekyo Sharingan, she didn't dare to be careless in the slightest.

Crap, he found out about Lady Tsunade's hemophobia!

Shizune inwardly cursed. When afflicted by her hemophobia, Tsunade no longer possessed Kage-level strength; even an ordinary person could kill her. This was a fatal weakness. Far from being a help, Tsunade was now a burden.

"Hmph, hemophobia? How boring." Wiping the blood from the corner of his mouth, Uchiha Nagi sheathed his sword, and the Susanoo dissipated.

He hadn't planned on killing Tsunade from the start. Otherwise, he would have drawn blood at the beginning of the fight, followed by a swift surprise attack, and Tsunade would already be dead...

His main goal was still to copy her techniques. Unfortunately, he hadn't managed to copy Tsunade's Yin Seal because she hadn't released it. Without seeing the complete process of a jutsu, he naturally couldn't copy it.

And then there was the Creation Rebirth that came after releasing the Yin Seal...

It seemed that until Tsunade's emotional trauma was resolved by the protagonist's "talk-no-jutsu," Uchiha Nagi would have no chance to copy these techniques. Still, this trip had been fruitful: he'd acquired the Monstrous Strength Fist and the Heavenly Foot Kick.

"Wait, you're not fighting anymore?!" Shizune was momentarily stunned. One second they were fighting to the death, and the next, he was just leaving, letting them go?

"No more fighting. With Tsunade's hemophobia, the fight can't continue, can it? Or are you planning to capture me and take me back to Konoha?" Uchiha Nagi smiled, causing Shizune to pause.

"When she recovers, remember to tell her: when she overcomes her hemophobia, I'm willing to fight her again."

With that, Uchiha Nagi ran a hand through his messy hair. Sunlight sprinkled on his departing figure, leaving behind a cool and impressive silhouette as he walked away.

Shizune stood there dumbfounded. The life-and-death battle she had been dreading was over just like that?

Watching Uchiha Nagi's receding figure, Shizune's mind wandered. Suddenly, she thought he looked… kind of handsome.

She shook her head vigorously and lightly slapped her own cheek. Had she been single for too long, to the point of fantasizing about men? He was a Konoha missing-nin; how could she find him handsome? He was an enemy!

"Lady Tsunade, are you alright? Let's get out of here first. The battle just now must have attracted a lot of attention. Let's leave quickly."

Shizune carried Tsunade on her back and quickly leaped away. As she moved, she thought about the letters from her friends back in the village. Kurenai had started dating Asuma.

And XX from the same village also had a boyfriend. Then there was XXX, who had gotten married and even had children…

Thinking of this, Shizune couldn't help but cast a resentful glance at Tsunade. Because she had been taking care of Tsunade all these years, she hadn't even had time to find a boyfriend…

It was one thing for Tsunade herself not to find a man, but she was also preventing Shizune from finding one! Was she really doomed to become a lonely old spinster?

At this thought, Shizune's spirits plummeted…

However, someone else was in an extremely cheerful mood—

The Monstrous Strength Fist! Damn it, next time Akaza fights me, I'll catch him off guard with a punch and blow his brains out!

To others, his Susanoo and Amaterasu were his strongest ninjutsu. After painstakingly getting close, they'd find his swordsmanship wasn't bad either. Then, after disarming him, they'd discover his ultimate trump card was actually the Monstrous Strength Fist…

Hoh hoh hoh—

Uchiha Nagi leaped through the forest, happily heading towards the coast. Although this was the Land of Hot Water, there were undoubtedly many Konoha spies around. He wasn't afraid of Root or Anbu assassins, but he hated trouble.

Ninja battles were all about outwitting each other with cunning and underhanded tactics, with no regard for martial ethics. Before reaching Super Kage-level, even a Kage could be taken down. Wasn't the Fourth Raikage almost killed by a bounty hunter team using Exploding Parasitic Insects?

"Low profile. Only by staying low can one live long. High profile just means a quick death, hahaha."

A few hours later, night fell. Uchiha Nagi took out some wormwood to repel insects and started a small bonfire. He then used an Earth Release jutsu to create a one-meter-high wall to conceal the firelight, preventing it from being seen from miles away.

Uchiha Nagi took out some dry rations, placing them over the bonfire to heat them up. He also took out some meat – a few strips of ham and jerky. He had no love for the dry and tasteless Military Ration Pills; unless it was a combat situation, he wouldn't touch them even if his life depended on it.

Lighting a bonfire easily created smoke, but at night, there was no need to worry about the rising smoke being detected. These were details from wartime; neglecting them could cost one their life.

During wartime, if you made a fire during the day, you worried about the smoke being seen, so you either used alcohol stoves or ate dry rations. At night, you didn't have to worry about smoke, but you had to build an earth wall to contain the firelight.

"The Monstrous Strength Fist… it's not working. My physique isn't strong enough…" Uchiha Nagi experimented a bit and found he couldn't replicate the power Tsunade put into her Monstrous Strength Fist at all.

After careful study, he discovered—

Every action has an equal and opposite reaction. The amount of force used to hit an enemy would be the same amount of recoil force his own fist had to endure. Although wrapping his fist in chakra reduced the damage, it would still cause severe harm to the muscles, bones, capillaries, and nerves of his arm, much like when Rock Lee opened the Fourth Gate.

An ordinary person would wreck their fist after a single use. There was only one solution: to continuously train and strengthen one's physical body, like Might Guy.

The Senju Clan's physique was inherently powerful, and Tsunade also knew medical ninjutsu, which was why the Monstrous Strength Fist became her exclusive specialty…

Shizune knew medical ninjutsu but couldn't learn it because her physique wasn't strong enough. Ino had also studied under Tsunade but couldn't learn it either. Only Sakura managed it. Many people suspected Sakura had inherited Senju Clan lineage, and not without reason.

"Wrecked, huh? My right hand can't take it, but my left hand… that's another story." Uchiha Nagi looked at his white left hand. The White Zetsu cells in it had a divisive property similar to cancer cells.

No matter how many times the cells divided, or how damaged the capillaries and nerves within became, as long as his body could supply enough nutrients, this White Zetsu arm could recover. It was practically a low-grade version of the Sage Body.

"Monstrous Strength Fist—!" Uchiha Nagi roared, slamming his fist into the mountainside.

BOOM!!

With a deafening crash, the earth shook and the mountain cracked. A large hole appeared directly in the mountainside. The Monstrous Strength Fist—a success!

Afterward, he used medical ninjutsu to check himself. The muscle soreness had disappeared, but the nerve damage and injured capillaries were quite severe. However, this arm could self-repair, so it wasn't a major problem.

Still, he couldn't recklessly use the Monstrous Strength Fist like Tsunade. Currently, this hand could manage it no more than ten times. And aside from this hand, no other part of his body could use Tsunade's signature jutsu…