A Compatibility Beyond Bloodlines

"Weapons, a war fan?"

At the mention of that word, the first thing that came to Uchiha Gin's mind was the Flame War Fan enshrined in Uchiha Tajima's home.

He knew that thing could use Wind Style to control and reflect Fire Release ninjutsu, but it only boosted one's combat power somewhat. If Uchiha Tajima treated that as his trump card, it would be far too beneath him.

"A weapon doesn't necessarily have to be a ninja tool. Just like our Uchiha Clan, the strongest weapon will always be this."

Uchiha Yao shook his head, dismissing Uchiha Gin's guess, then pointed at his own eyes.

Knowing full well that the Ninja World ultimately ran on bloodlines, Uchiha Gin nodded in deep agreement.

"So Uchiha Tajima's weapons are two pairs of Mangekyō Sharingan."

Uchiha Yao nodded approvingly. "That's right. You and Nameless."

At the same time, several figures were holding a secret meeting in the Clan Leader's Office within the Uchiha Clan leader's building.

"Clan Leader, Uchiha Ryuei has tortured the location of the Sealed Land out of the Sarutobi Clan."

The round Uchiha Yan lowered his head, his anxious tone carrying a hint of pride.

"Can its authenticity be confirmed?"

Uchiha Tajima, who had been resting with his eyes closed, asked coldly.

"There is absolutely no problem." Uchiha Yan patted his chest in assurance.

"Elder Miao, is the Control Device complete?"

Uchiha Tajima nodded, fairly satisfied with Uchiha Yan's information. Then he turned to Uchiha Miao on the other side and asked.

"The control equipment, which incorporates multiple Sealing Techniques, has completed testing."

The thin, withered Uchiha Miao also lowered his head and replied unhurriedly.

"Good! This time, we absolutely cannot repeat our past mistakes. Our Uchiha Clan will ultimately rule the entire Warring States Period."

After hearing their reports, Uchiha Tajima slowly opened his closed eyes. The strange patterns in his pupils rotated slowly, radiating a suffocating pressure.

"Is that old man Uchiha Yao behaving himself now?"

Uchiha Tajima's sharp gaze fell upon Uchiha Yan, who looked like an ostrich.

"He spends every day reading and writing, researching outdated subjects. He has made no unusual moves."

Wiping the sweat from his forehead, Uchiha Yan reported truthfully between breaths.

"Sigh, we were master and disciple after all. As long as he does nothing excessive again, let him out once this is done."

Uchiha Tajima's gaze dimmed for a moment before he spoke.

"The Clan Leader is merciful."

Uchiha Yan and Uchiha Miao called out together.

Inside Dungeon Number Zero, Uchiha Yao and Uchiha Gin sat facing each other. With pity in his eyes, Uchiha Yao said in grief and indignation, "That despicable Uchiha Tajima subjected you to years of brainwashing experiments, causing you to completely lose your sense of self and turning you and Nameless into pawns he could manipulate at will."

"Furthermore, Uchiha Miao's experimental research showed that your and Nameless's Mangekyō have an extremely high degree of compatibility. When your eye techniques are used together, the boost is completely greater than one plus one."

"After all that, what exactly are our Mangekyō abilities?"

Unable to hold it in any longer, Uchiha Gin finally asked. Ever since learning that the original owner had once possessed the Mangekyō Sharingan, he had been intensely curious about its abilities.

"Your right eye contains the flames of Amaterasu, the strongest fire spoken of in legend."

Uchiha Yao spoke with a nostalgic expression.

Uchiha Gin unconsciously touched his right eye. He had been able to activate Amaterasu with only a Two-Tomoe Sharingan. He had thought it was a cheat from the system, never expecting that he himself had possessed it before, and that he had activated it through familiarity.

If his right eye was Amaterasu, then what about his left eye? Recalling the miserable experiences he had suffered since transmigrating, Uchiha Gin instinctively covered his crotch.

"Your left eye can unleash the Uchiha Clan's strongest spiritual attack: Genjutsu: Tsukuyomi."

Sure enough, his Mangekyō was actually identical to that of the future Filial Son. No wonder those skills kept appearing whenever they refreshed.

He recalled the pattern behind the skill refreshes in the backyard. Tsukuyomi and Amaterasu had a far higher chance of appearing than other skills because the original owner had possessed them, to the point where they could practically be refreshed with precision.

Strength of a Hundred had not appeared for no reason either. On the day it refreshed, Uzumaki Mito of the Whirlpool Clan had used Strength of a Hundred.

Combined with the system reward that had fused a trace amount of Whirlpool bloodline into him, the skill that refreshed that night had changed into Strength of a Hundred.

It looked random, but everything followed a pattern. Uchiha Gin stroked his chin and began considering how to make better use of that pattern so the skills refreshed by the system would be more practical.

"Your Mangekyō possess the most destructive physical attack and genjutsu respectively. In Uchiha Tajima's eyes, they are an exceptionally handy sharp blade."

Uchiha Yao spoke in a deep voice.

"And Nameless's Mangekyō."

Hearing Uchiha Yao begin talking about the other Mangekyō that still existed, Uchiha Gin quickly reined in his thoughts and listened carefully.

"One of Nameless's Mangekyō possesses an enhancement ability called 'Kagutsuchi.' It can freely control flames, shaping them into all kinds of forms for attack and defense."

Kagutsuchi! The eye technique of the future Uchiha Sasuke's Mangekyō. Combined with Amaterasu, it could become more flexible and varied while increasing its damage.

"Nameless's Kagutsuchi seems as though it was born for your Amaterasu. The Flame Release: Kagutsuchi the two of you wield together is like the Scythe of the Death God harvesting lives across the battlefield."

There was a hint of madness in Uchiha Yao's eyes as he spoke, along with a sense of satisfaction Uchiha Gin could not understand.

"What about the other eye technique?"

Seeing Uchiha Yao talking on and on, Uchiha Gin interrupted him.

Hearing his grandson's impatient voice, Uchiha Yao nearly lost his breath. He took a deep breath, chose not to argue with a junior, and continued.

"Nameless's other eye technique is called 'Yachihoko.'"

Yachihoko? Only a handful of Mangekyō abilities had appeared in the future plot, and he had heard of them all. But Uchiha Gin had truly never heard of this one.

Seeing Uchiha Gin's puzzled, urging gaze, Uchiha Yao looked troubled. He fell silent for a long while before finally explaining.

"Yachihoko's ability is very special. It can give others an engraving. As long as someone bears that engraving, it can connect to and freely control that person's mind and Chakra."

At first glance, Uchiha Gin only thought Yachihoko was a control skill. It could restrain an enemy while draining their Chakra, useful for both duels and group battles. It was not weak, but it was not especially powerful either.

"Do you think this ability is nothing special?"

Seeing the slight contempt Uchiha Gin held toward Yachihoko, Uchiha Yao spoke.

Uchiha Gin, having been seen through, nodded without denying it. A skill like this would surely require harsh prerequisites.

Otherwise, if its owner could simply engrave anyone they wanted, everyone would be hypnotized into Power Banks. Wouldn't that make it invincible? Just like the Infinite Tsukuyomi of the future Fourth Ninja World War's ultimate boss, Kaguya Otsutsuki. As his imagination ran wild, the more he thought about it, the more cold sweat began pouring down Uchiha Gin's back. Swallowing against his dry throat, he looked up at the old man before him and asked in a slightly trembling voice, "Can Yachihoko be used together with my Tsukuyomi?"

Uchiha Yao nodded, his expression grave.

"That's right. When Nameless's Yachihoko enhances your Tsukuyomi, it pulls the Red Moon from your genjutsu space into reality, placing an engraving on everyone bathed in its moonlight. We call this technique."

Engraved Tsukuyomi