My Sign-in System in Naruto

The strength of Uchiha Fugaku had never been directly depicted in the Naruto series.

Even the fact that he had awakened the Mangekyō Sharingan was only briefly mentioned in the Itachi Shinden novels.

During the Third Great Ninja War, Fugaku had witnessed the death of a close friend on the battlefield, which led to the awakening of his Mangekyō.

For the next several years, Fugaku had kept this secret hidden.

Even on the night of the Uchiha massacre, he had not revealed the power of his Mangekyō.

The reason given was that Fugaku could not bear to fight his own son, Itachi, and thus chose not to resist.

However, Fugaku's Sharingan seemed to have vanished into thin air.

Neither Danzo nor Obito had ever obtained Fugaku's Mangekyō.

"Susanoo, huh?"

Haru stared at Uchiha Fugaku. Facing him, the Uchiha clan leader had immediately brought out his full power.

Visible skeletal structures rapidly enveloped Fugaku, followed by nerves, muscles, skin, and armor, all growing layer by layer.

Boom!

In just a few breaths, Fugaku had activated the complete form of Susanoo, completely obliterating the small wooden hut.

"Father…"

Uchiha Itachi was also stunned by the sight before him.

He had never expected his father to immediately unleash the complete form of Susanoo…

No, he was shocked that his father even possessed such power.

No wonder Fugaku believed the Uchiha clan could successfully launch a coup and control the power of the Nine-Tails.

With Mangekyō-level genjutsu and the complete form of Susanoo, Fugaku could indeed be called the strongest of the Uchiha clan.

And with such a trump card, if used unexpectedly, it could deal a heavy blow to the Third Hokage.

"This power isn't something you can face head-on."

Itachi quickly shouted to Haru, "The complete form of Susanoo is indestructible. With your Wood Release, you won't be able to break through."

In Itachi's view, Haru should target the weaker areas of the Susanoo, force an opening, and pull Fugaku out from within to have any chance of defeating him.

And the Byakugan could do just that find the weakest point in the Susanoo's chakra.

Although he couldn't intervene directly, Itachi still tried to help Haru analyze Fugaku's Susanoo and offer advice.

However, Haru ignored Itachi's assistance.

The chakra emanating from Fugaku was immense, and it wouldn't be long before it attracted the attention of both the Uchiha clan and the Third Hokage.

If it were the latter, that would be manageable.

But if the Uchiha clan thought their leader had launched the coup early, they might release the Nine-Tails in the village.

Although Haru was a transmigrator, he had still lived in this village for five years.

Most importantly, Haru planned to become Hokage and unify the ninja world, starting with the Hidden Leaf Village.

"Haru, use Wood Release!"

Fugaku crossed his arms, standing atop the Susanoo's head, looking down at Haru.

At the founding of the Hidden Leaf Village, Hashirama Senju and Uchiha Madara had engaged in a great battle.

And now, the only inheritor of Wood Release from the Senju clan faced the leader of the Uchiha clan.

This battle was filled with irony.

"It really is… quite similar…"

Fugaku suddenly paused, struck by the strong parallels.

Back then, Uchiha Madara had tried to persuade the Uchiha clan to support him in reclaiming what rightfully belonged to the Uchiha.

How similar was that to his current situation?

The only difference was that Madara had wanted to betray the village but failed to gain the clan's support.

Fugaku, on the other hand, had never wanted to betray the village or abandon the hard-won peace, yet he had been pushed to the forefront by his clan.

Thinking of this, Fugaku couldn't help but laugh bitterly.

Perhaps this was the fate of the Uchiha clan.

No matter the era, the clan leader's true intentions never seemed to align with the clan's desires.

"You really are like the First Hokage."

At the same time, Fugaku couldn't help but sigh.

He was so much like Uchiha Madara, and Haru was so much like Hashirama Senju.

Both stood firmly on the side of the village, seeking to eliminate all threats to its stability.

Hashirama Senju had killed his best friend, Uchiha Madara, for the sake of the village.

Yes…

Suddenly, Fugaku seemed to realize something.

His gaze shifted slightly, landing on Uchiha Itachi.

Perhaps he, too, should follow in Madara's footsteps.

Boom!

A loud explosion erupted from the Susanoo's hand as three massive tomoe connected, forming a unique blade.

Upon closer inspection, the shape of the tomoe resembled Fugaku's Mangekyō pattern.

Whoosh!

The moment the Susanoo gripped the hilt, black flames engulfed the entire blade.

"Is that… Amaterasu?"

Itachi couldn't help but gasp. Although he was Fugaku's son, this was the first time he had seen his father's Susanoo.

"Amaterasu, huh?"

Haru also noticed the black flames.

Both Itachi and Sasuke had the ability to use Amaterasu with their Mangekyō.

As their father and a ninja skilled in fire release and genjutsu, it wasn't surprising that Fugaku could do the same.

However, unlike his mental state during the fight with the Fourth Raikage, Haru's focus was different this time.

Back then, he had been more interested in testing the power of his Zanpakutō than defeating the Raikage.

But this battle would determine the fate of the coup in the Hidden Leaf Village.

Clap!

As Fugaku's massive Susanoo swung its blade toward him, Haru didn't dodge. Instead, he pressed his palms together, forming the Snake hand seal.

"Get out of the way! The flames of Amaterasu won't stop until they consume their target!"

Itachi, seeing Haru's intention to face Fugaku's Susanoo head-on, was shocked by his confidence.

In Itachi's view, even Wood Release wouldn't be enough to protect Haru this time.

Yet Haru ignored Itachi's warning.

"Wood Release: Wood Human Technique!"

Haru had already tested this technique's power in the inner world of his Zanpakutō.

Just as the Susanoo's blade was about to strike Haru, the ground began to tremble violently.

The lush green grass was suddenly overtaken by massive tree roots, which swelled and hardened at an unprecedented speed, forming two thick arms that slammed together.

Boom!

With a deafening crash, the two wooden hands ignored the black flames of Amaterasu and firmly grasped the Susanoo's weapon.

In the next moment, Haru's position rapidly rose, and within a few breaths, he stood at the same height as Fugaku.

Beneath him was a colossal wooden human.

"This is… the power of Wood Release…"

Fugaku gulped, his eyes filled with shock.

The Uchiha clan's Susanoo and the Senju clan's Wood Human Technique.

After decades, they were finally…

clashing once again.

"Your defeat is inevitable." Haru stared directly into Fugaku's Mangekyō, his voice low and steady.