Brook appeared in an instant and punched Ōtsutsuki Reishi straight into a crimson alternate dimension.
At the only gap in that runic space, countless sealing runes condensed at once, locking the entrance shut.
"Even if you force yourself into the Nine-Tomoe Golden Rinnegan state, it will still take you more than four hours to break through this seal. And this space is a true divine artifact."
Brook grinned wickedly.
Then he ignored Reishi, who was trapped inside the alternate dimension, and turned his attention to the elder's son, Ōtsutsuki Weishi.
In Kenshiki Ōtsutsuki's memories, this elder's son was not particularly special.
Weishi had a three-tomoe golden Rinnegan on his forehead, along with a pair of nine-tomoe red Rinnegan. This configuration made him a powerful figure among the second generation of Ōtsutsuki elders and descendants.
However, he was still inferior to Kenshiki, who possessed a nine-tomoe golden Rinnegan.
After all, Kenshiki had been personally raised as a top-tier tool by the strongest elder, Ōtsutsuki Ken.
Although Kenshiki's unique eye techniques were not very strong in direct offense, his chakra reserves were unmatched among the second generation. With that alone, he could crush most of them using other divine techniques.
"Who are you?"
Ōtsutsuki Weishi stared nervously at the terrifying man before him, the one with three golden Rinnegan. This bastard had actually attacked his father, an elder of the clan.
Since the day Weishi was born, he had never seen such a powerful enemy.
There truly was an alien race in this universe with strength comparable to an Ōtsutsuki elder.
"Isn't it obvious?"
Brook smiled.
"An enemy."
Looking at the flustered elder's son, Brook found it rather funny.
These second-generation Ōtsutsuki were usually arrogant and aloof, looking down on the so-called inferior races of other planets.
Even ordinary members of the Ōtsutsuki clan were trash in their eyes.
They did not need to plant Divine Trees themselves, nor did they often take part in battle. At most, they occasionally led powerful guards to collect Chakra Fruits and gather chakra from the various Ōtsutsuki branch members.
"Die!"
[Vess!]
Ōtsutsuki Weishi activated his Rinnegan eye technique.
One ghostly soldier after another appeared, each one as solid as a living body. These were the souls of races from various planets. Any powerful life form slain by Weishi could be transformed into a soul soldier.
"Yohoho! You want to play with souls against me?"
Brook laughed.
Behind him, an enormous ghostly Grim Reaper appeared. With a wave of its hand, it pulled those powerful ghost soldiers into the gate of hell in its stomach and swallowed them whole.
"How is this possible? Those were all powerful warriors from different planets!"
Weishi watched in disbelief as the powerful soul soldiers he had collected over hundreds of years were devoured and wiped out in an instant.
Among them were more than a dozen mighty alien warriors whose strength rivaled elite Ōtsutsuki like Momoshiki. They were precious collections that Weishi and his guards had worked hard to obtain.
How could they be erased so easily?
"Thanks for the gift. I like it very much."
Brook had not expected this second-generation Ōtsutsuki to offer him such a generous present the moment they met.
After enslaving those soul warriors, the number of powerful demon generals in his Pure Land Hell would increase sharply. Those ghost generals alone might be enough to sweep through the Naruto world several times over.
"Impossible! Give me back my ghost soldiers!"
[Saint David!]
Ōtsutsuki Weishi activated another eye technique.
His body began to grow without limit. In an instant, he became more than five thousand meters tall, then started stomping wildly at Brook.
The entire land fell into indiscriminate destruction.
"Holy crap. Is this some kind of Dharma Body? It's countless times bigger than the Multiply Technique."
Brook was slightly surprised.
His current Multiply Technique could only reach around two hundred meters at most. He had not expected this fellow to grow even larger than a Sea King.
"Release my father and return my collection!"
Weishi's enormous body stomped across the land. The entire area trembled as if a magnitude 4.5 earthquake had struck. Every place he stepped on collapsed into a deep abyss.
Brook floated in the air, his eyes bright with interest.
"I already have [Sukunahikona], which lets me shrink myself or inanimate objects. If I add this enlargement eye technique, I'll truly be able to control my size at will."
Compared with the technique that summoned ghost soldiers, Brook was even more interested in this enlargement eye technique.
"Still, getting bigger just makes you easier to hit."
[Kamui: Distortion!]
[Four Gods Thunder Art: Storm Light Fang!]
Brook chuckled and released a space-time distortion attack along with a lightning-style slash at Weishi's legs.
"Ah!"
At that moment, Weishi was like Oars Jr. One of his legs was severed, while the other was twisted and broken by space itself.
The colossal giant crashed to the ground, his screams echoing through the sky.
[Super Celestial Obstruction Star!]
A massive meteor, more than five thousand meters wide, smashed down onto the giant.
Tons of blood splattered outward.
Then Weishi's body rapidly shrank.
Even after suffering such a heavy blow, he still did not die. He escaped from beneath the meteor, fled wildly into the distance while scattering blood, then shot toward the sky.
He was going to run.
He had abandoned his father and chosen to flee.
This enemy was far too terrifying.
"You think you can escape?"
Brook grinned.
His fate was already sealed.
A black portal suddenly opened beside Brook. He reached inside and yanked the miserable Weishi straight back.
"No! Why can you use [Yomotsu Hirasaka] too?"
Weishi cried out in terror.
"Even I haven't awakened that Bloodline Limit. Why does an enemy possess so many Ōtsutsuki abilities?"
"Just behave and become my food."
Brook grinned cruelly and drove several Four Gods Sealing Black Rods into Weishi's shoulders and thighs.
"Don't kill me! My father is an elder! We are the strongest Ōtsutsuki clan!"
When faced with death, this second-generation elder's son completely broke down. He could only struggle and scream in desperation.
Brook ignored him.
He pulled out the three-tomoe golden Rinnegan on Weishi's forehead, then gouged out both of his nine-tomoe red Rinnegan.
After that, he stabbed a black rod through Weishi's throat, cutting off his screams.
"Fine eyes."
Brook smiled as he absorbed those eyes into his own. Then he released the power of devouring, engulfing Ōtsutsuki Weishi and gradually consuming him until nothing remained.
Meanwhile, inside the runic dimension, Ōtsutsuki Reishi was still furiously bombarding that despicable sealing technique.
He had already guessed that this bastard was most likely the criminal who had caused Ōtsutsuki Kenshiki's disappearance.
If he did not get out soon, his son Weishi would probably suffer as well.
What kind of power was this?
What kind of sealing technique was this?
How could it hold him back for so long?
-----------
After Brook absorbed Ōtsutsuki Weishi's energy, his eyes still did not have enough power to advance into six-tomoe golden Rinnegan.
"With my current combat strength, my chance of dealing with Elder Ōtsutsuki alone isn't even sixty percent."
At most, it would be an even fight. There was even a high chance he would lose.
Using the memories of Kenshiki, Weishi, and Momoshiki, Brook kept deducing Ōtsutsuki Reishi's true combat strength, along with his pill reserves and hidden killing moves.
Because of that, he temporarily abandoned the idea of entering the Rune Dimension to fight Reishi alone.
Brook used [Yomotsu Hirasaka] and returned directly to the ruins of the Northern Underworld.
After several hours of intense effort, Ōtsutsuki Reishi finally managed to blast open a small gap in the seal. Brook immediately reinforced it, then coldly injected the ominous, cursed death energy of the Northern Underworld into the Rune Dimension.
This was going to be a battle of attrition.
For that reason, Brook had specifically found a remote corner of the Northern Underworld to avoid running into any Ōtsutsuki who might use [Yomotsu Hirasaka].
"You are actually inside the dark, ominous space of [Yomotsu Hirasaka]?"
Sensing that familiar aura of death, Ōtsutsuki Reishi spoke in disbelief.
This mysterious enemy could actually stay in that ominous space for an extended period.
As an elder of the Ōtsutsuki clan, even Reishi usually would not remain there for more than an hour. Ordinary Ōtsutsuki who had awakened [Yomotsu Hirasaka] could generally only stay for about five minutes.
Once they entered, they had to leave quickly.
That place constantly consumed chakra, forcing them to keep [Yomotsu Hirasaka] active to protect themselves from corrosion.
"How did I not think of making the inside look like the Underworld before?"
Brook felt a bit annoyed.
After successfully hunting Reishi, he decided he would turn the Rune Dimension into a true weapon against the Ōtsutsuki clan.
This rune-filled dimension was transformed from the [Rune Shield], a precious artifact that had once protected the heart of Hirasaka, the God of the Northern Underworld.
Even [Yomotsu Hirasaka] could not freely enter or exit this space.
Aside from the gap pierced open by the Ōtsutsuki God, no one in this star field could break through the barrier of this runic alternate dimension.
As more and more ominous death energy poured into the Rune Dimension, Ōtsutsuki Reishi attacked Brook's constantly reinforced sealing runes with growing anxiety.
"Who are you? What did you do to Weishi?"
Ōtsutsuki Reishi roared in fury.
When he saw Brook's three golden Rinnegan, unease surged in his heart.
But Brook did not answer. He only continued pouring cursed death energy into the Rune Dimension.
Reishi also understood that if things continued this way, the situation would only grow worse.
He decisively absorbed the power of his two six-tomoe golden Rinnegan, forcing the Rinnegan on his forehead to advance into a nine-tomoe golden Rinnegan.
His two eyes degenerated as a result, one becoming a Byakugan and the other turning into a clear blue eye.
As long as he defeated this enemy, he would not suffer too much loss in this battle.
He might even be able to truly advance into a state with three nine-tomoe golden Rinnegan.
"You're really going all out this quickly."
Brook also used the power of the Four Gods to briefly fuse the power of his three golden Rinnegan into the Rinnegan on his forehead, raising its rank to the highest level he could currently reach.
His two eyes returned to ordinary black pupils.
"You even know these secret techniques of the Ōtsutsuki clan?"
Ōtsutsuki Reishi was shocked by this outsider who had evolved on his own. For a moment, he almost felt as if he were facing an elder of the Ōtsutsuki main family.
[Never-Setting Sun!]
Reishi activated his strongest eye technique.
A small sun appeared behind him.
Its terrifying heat began melting Brook's sealing runes.
"What? What kind of ridiculous eye technique is that? He can actually summon a sun?"
Brook was horrified.
This was the first time he had ever seen such a powerful move.
"Hmph! Outsider, you stole the abilities of my clan. Today, I will wipe you out!"
Ōtsutsuki Reishi's eyes burned with greed.
He had made up his mind to devour this outsider, who clearly possessed many secrets and treasures.
At the very least, this runic alternate dimension and those mysterious sealing runes seemed to come from an important inheritance. That made him even more excited.
If he obtained these inheritances and devoured this outsider, he would definitely surpass Ōtsutsuki Kenshiki.
"I want to devour you too, and reach an even higher level of evolution!"
Brook continued pouring ominous death energy inside, while the power of the Four Gods in his hands kept adding new layers to the seal.
Meanwhile, Ōtsutsuki Reishi maintained the small sun while shielding himself from the ominous death energy. He also began consuming chakra pills one after another.
Brook felt his heart ache as he watched.
If he could defeat Reishi quickly, those would all have been his spoils.
But now, he could only watch as the Ōtsutsuki elder kept wasting his supplies.
Brook activated the source power of Hirasaka's heart, manipulating all the ominous death energy inside the Rune Dimension to corrode Reishi.
"Why is your energy level so high?"
Ōtsutsuki Reishi could not believe it.
He had already evolved his forehead eye into a nine-tomoe golden Rinnegan and summoned a sun, yet he still could not quickly burn through this damaged seal.
"My power is beyond your imagination."
Brook's Four Gods Power was indeed more advanced than the Ōtsutsuki clan's power.
If Brook had not developed for such a short time, and if his Four Gods Power were deeper and more abundant, he would have already charged in and fought Reishi head-on.
For now, he would use the ominous death energy to exhaust Reishi's reserves.
Today, Brook held the advantage of terrain. That gave him the confidence to slowly wear Ōtsutsuki Reishi down.
And so, the two actually remained locked in a stalemate for most of the day.
During this time, in order to resist the erosion of the ominous death aura, Reishi kept consuming chakra pills and chakra fruits while maintaining [Yomotsu Hirasaka] without pause.
"Impossible! Absolutely impossible! How can you last this long?"
Ōtsutsuki Reishi could not believe that this outsider's energy reserves were so vast.
Could his foundation really be deeper than his own?
Brook's expression was also solemn.
He was constantly devouring the monsters and rare plants and beasts inside [Kichijoten] to replenish his massive consumption.
Fortunately, he had captured almost all the powerful native mythical beasts of that primitive planet. With the reserves inside [Benzaiten] and [Kichijoten], he was able to hold on.
"So if I don't kill you, I won't even break even."
Brook gritted his teeth.
Seeing that Ōtsutsuki Reishi could no longer maintain his small sun and was now focusing entirely on resisting the erosion of the ominous death aura, Brook knew his chance had finally come.