He couldn't help touching his cheek and mocking himself. "Why am I so stupid?! Wouldn't cutting a hole straight into it with my sword be faster and easier?!"
Seiichi used the only Wind Release Ninjutsu he currently knew—Wind Release: Great Breakthrough—to blow away every last trace of the dust filling the air.
The mountain was now no taller than he was. Uh... to be precise, no taller than his Susanoo.
Next came hollowing out the mountain.
Perfect Susanoo was simply too enormous. Keeping it in that form would not only make movement awkward, but lying flat on the ground would also look rather undignified.
Thus, Seiichi decided to scale Susanoo back to its third stage. That made it just the right height to stand directly on the ground.
Next, Seiichi planned to use Shusui Parting Clouds in its "destruction" state to excavate a cave.
He got straight to work, blade in hand, and effortlessly plunged it into the mountainside.
The entire process was exceptionally smooth, without the slightest resistance. It was as though he held not a sword, but a soft paintbrush that could trace whatever shape he wanted with a light stroke.
Before long, he had successfully hollowed out a cave.
Seiichi immediately activated his "mini" Perfect Susanoo armor and stepped inside.
He had developed this armor by taking his research in the opposite direction, making it somewhat different from conventional Susanoo.
Once he put it on, it was as though his entire body wore a layer of Chakra Armor. Not only did it look incredibly cool, but more importantly, it allowed him to move with greater flexibility and freedom in battle, handling any powerful opponent with ease.
Otherwise, a Perfect Susanoo standing hundreds of meters tall was fine for crushing weaklings. In the eyes of true experts, however, it was nothing but a sitting duck.
This ninjutsu had first appeared back when he and Minato had clashed in the reception room for the first time because of a misunderstanding.
With pitch darkness all around him, Seiichi cast a small Great Fireball Technique in his hand.
Then, carrying a fireball thirty centimeters in diameter in his left hand, he strolled through the pitch-black cave.
As he ventured deeper, he drew ever closer to the end of the passage he had just excavated.
He had no choice but to keep digging.
For hollowing out a mountain, a small blade less than two meters long was nowhere near as useful as a huge sword two hundred meters long.
He mechanically swung the "mini" Shusui Parting Clouds in his hand, losing track of how much time had passed.
Finally, after another swing, there was no more rock beyond it, but a cavern.
Seiichi walked straight in, entering the mysterious, enclosed stone chamber.
His gaze swept swiftly around, and the sight before him made him draw a sharp breath.
The enormous stone chamber seemed cut off from the world. Not a ray of light penetrated it; only darkness filled the space.
The walls, floor, and ceiling were all densely covered in sealing marks. Like mysterious runes, these marks gave off a faint glow.
At the center of the stone chamber, an enormous sealing formation occupied the entire space.
It was circular, measuring several dozen feet across.
Nine thick stone pillars stood around the sealing formation, each several meters tall.
Their surfaces were likewise covered in engraved sealing marks. Like strings of ancient codes, these marks spoke of the ravages of time.
More striking still, a golden chain extended from the top of each pillar.
Like nimble snakes, these chains wound downward, ultimately coiling around the massive stone pillar at the very center of the sealing formation.
That massive pillar was more than three times the size of the nine surrounding pillars, and its sealing marks were so densely packed that they left him speechless.
Furthermore, the nine golden chains were as sturdy as steel, tightly binding this central pillar.
Looking around, he found that the power of the seals permeated everything, from the ground to the space overhead, and even every inch of air.
As Seiichi gazed at it all, admiration welled up within him. What an impressive composite formation!
These intricate sealing marks seemed to form an indestructible defensive line, trapping some powerful being here.
Faced with so many complicated seals, Seiichi felt his scalp prickle.
Holy shit, with sealing power like this, I'd believe it if someone told me it was sealing the Ten-Tails' body!
He carefully examined his surroundings, inwardly stunned.
After counting them, he discovered that the marks around him actually formed an immensely powerful seal;
the marks overhead likewise formed a seal;
and there was even less doubt about the ones below: they were clearly a standard sealing formation.
Not only that, but each of the nine stone pillars formed an independent seal, while the pillar at the very center constituted yet another seal of its own.
If his guess was correct, those chains shimmering with golden light should have come from the Uzumaki Clan's top-tier Sealing Jutsu-Adamantine Sealing Chains.
Th-this was a fucking super Sealing Jutsu designed specifically to suppress Tailed Beasts, and now it was being used on an Uchiha?!
Seiichi was completely dumbfounded, staring in disbelief at everything before him.
This super-composite sealing formation, composed of fourteen different Sealing Jutsu, existed solely to seal one Uchiha clan member with the Mangekyō Sharingan?!
As far as Seiichi knew, apart from Princess Kaguya, who had been sealed on the moon, there was probably no one else in the entire Shinobi World whose seal was stronger than this Uchiha clan member's.
With such a jaw-dropping degree of sealing, had this Uchiha clan member broken the laws of heaven?
However, if he disregarded that clan member and considered only the seal itself, then this Composite Sealing Formation was indeed of considerable value.
Destroying it so casually would truly be a shame.
After all, constructing and arranging such an intricate and powerful formation must have taken an enormous amount of painstaking effort and energy.
Moreover, judging by the aura it gave off, the formation clearly possessed extraordinary power and defensive capabilities.
If something so precious could be put to good use or studied, it might yield unexpected rewards.
Especially since this Composite Sealing Formation had been lost for so long!
Expecting the handful of surviving members of the Uzumaki Clan and Senju Clan to reproduce the entire formation was nothing short of a pipe dream!
Rather than pinning his hopes on them, he might as well hope that a detailed instructional scroll for this Composite Sealing Formation would suddenly fall from the sky. That might actually be more likely to happen.
After all, this Composite Sealing Formation was extraordinarily complex and mysterious. The power and techniques it contained were far beyond what ordinary people could understand or master.
Even these two clans, once renowned throughout the world for their powerful Sealing Jutsu, might not be able to recreate it perfectly without the original records.
Thus, relying on the people currently available to reproduce this formation was an almost impossible task.
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