My Sign-in System in Naruto

Haru wasn't using Shikai.

If a Shinigami knew the true name of their Zanpakutō, they could release it by calling out its name.

But if they deliberately called out the wrong name, they would achieve an incomplete Shikai.

This was also known as a partial Shikai.

So Haru only spoke half of the Raijin's name, releasing his Zanpakutō into the form of lightning gauntlets.

"Heavy Lightning Fist!"

A didn't care about Haru's flashy techniques. He decisively concentrated Lightning Release chakra into his elbow and slammed it toward Haru.

Haru was also deeply impressed by this move.

When A faced Sasuke's Hebi team, he had used this move to send Jugo, fully transformed by his cursed seal, flying.

It was an extremely powerful attack.

Boom!

Seeing A charge forward, Haru raised his arm and extended his palm, blocking A's elbow.

Two different types of lightning clashed, creating bursts of thunder, and an invisible shockwave spread outward.

Crash!

The remaining floor, walls, and ceiling all crumbled under the force of their clash.

Seeing this, Mifune couldn't help but take a step back.

If he hadn't known about Haru's identity beforehand, he might have thought this was a battle between two Kage.

In fact, it wasn't just Mifune who was shocked by what he saw.

Hiruzen's heart was also deeply unsettled.

He understood the Fourth Raikage's strength better than anyone.

During the Third Great Ninja War, A had been one of Kumogakure's main fighters.

He and his brother, Killer Bee, were a fearsome duo.

Even Minato Namikaze had given A high praise after their battle.

Now, years after the Third Great Ninja War, A had become the Fourth Raikage.

Both his strength and speed had improved significantly.

Yet Haru, who had only recently risen to prominence, had managed to block his attack.

"Lord Raikage!"

Shi and Darui exchanged glances, preparing to launch a diversionary attack.

But just as they were about to form hand seals and charge forward, Hiruzen, who had been standing still, suddenly appeared in front of them.

"It's better not to interfere." Hiruzen clasped his hands behind his back, a kind smile on his face.

However, this wasn't a request but a warning.

Shi and Darui looked at the old man before them, not daring to act rashly.

They were well aware of the gap in strength between them. If they acted recklessly, they might be instantly killed by the Third Hokage.

And Lord Raikage might be distracted by their situation.

What they had thought would be a one-sided battle had suddenly taken a drastic turn.

"Haru…"

Mifune murmured the name, one hand instinctively gripping the hilt of his sword.

A bad premonition rose in his heart.

"Shi, Darui, just stay where you are."

Although A was focused on his battle with Haru, he also noticed the situation on the other side.

Worried that Hiruzen might attack them, A had no choice but to shout.

But no matter what, he wasn't going to give up this opportunity.

Not only did Haru possess Wood Release, but he was also highly skilled in Lightning Release.

"Lightning Straight!"

With another roar, A twisted his body mid-air, concentrating his power into his other hand, forming a hand blade, and slashed horizontally with full force.

Crackle!

The lightning around Haru's body began to intensify, the sound growing louder.

Unlike A's explosive Lightning Release, Haru's power was both derived from Lightning Release and something beyond it.

This was the ability of his Zanpakutō.

It also had a slow buildup.

The lightning around him would clash and collide, creating a thunderous resonance.

Each resonance represented a level.

Crackle!

Crackle!

The Raijin resonance continued to rise. Just as A's hand blade was about to strike Haru, the resonance reached the sixth level.

Boom!

Haru clenched his fist and punched forward, meeting A's hand blade head-on.

Raijin clashed with lightning, and in that instant, an even greater shockwave erupted, completely shattering the ceiling and walls.

"Earth Release: Earth-Style Wall!"

Seeing this, Hiruzen had no choice but to use an even stronger Earth Release technique to break through the collapsing ceiling.

Crash!

The ground shook violently, and sunlight poured into the room.

Meanwhile, Mifune and his samurai stood frozen in place.

This…

This was a battle between shinobi?

"You're indeed impressive, able to evolve Lightning Release to this level." Haru locked eyes with A. "But can you do even better?"

A stared into Haru's eyes, disbelief written all over his face.

This guy…

Was he complimenting him?

A mere guard from Konoha, at best an elite Jonin, was complimenting him, the Raikage?

And what A found hardest to accept was…

Whether it was his imagination or not.

When Haru had countered his Lightning Straight, it didn't seem like he had used his best or strongest move.

It felt…

As if Haru was testing him, from a position of superiority!

"No…"

A shook his head. He was the Fourth Raikage. No one could surpass him in the realm of Lightning Release.

"Ahhh!"

With this thought, A decided to stop holding back, pushing his Lightning Release Chakra Mode to its maximum.

"Going all out, huh?"

Haru's gaze sharpened as he watched A's hair stand on end, resembling a Super Saiyan.

At the same time, Haru knew that in this state, A's speed was at its peak.

Even the Mangekyō Sharingan couldn't keep up.

In an instant, he could dodge Amaterasu.

But…

Crackle!

Just as A entered this state, the Raijin resonance around Haru reached its peak.

Raijin Ninth Resonance!

Even the purple lightning around Haru no longer just surrounded him but surged into his body, instantly transforming his flesh and bones.

"Lightning Release Chakra Mode?!"

A's eyes widened in shock.

The Lightning Release Chakra Mode had always been a technique only the Raikage could master.

Yet now, a shinobi from Konoha had also mastered it.

"No."

Haru shook his head. "This is the Raijin Body."

As soon as he spoke, Haru raised both hands, clenched his fists, and aimed at A's chest.

"Raijin Burial!"

The visible Raijin lightning transformed into a dragon under Haru's guidance, crashing toward A's chest.

In that instant, A, known for his godlike speed, didn't even have time to activate his Body Flicker Technique.

Boom!

An unprecedented thunderclap echoed through the heavens and earth, the shockwave instantly destroying Hiruzen's Earth-Style Wall.

The Fourth Raikage, A, without even a chance to counterattack, was sent plummeting to the ground.