"What the hell is that thing!"
Suguru Geto, riding on the back of a bird-type Cursed Spirit and circling high above, widened his eyes. Looking at the 30 square kilometers of land before him, which had completely sunk into an ocean of darkness, his astonishment was palpable.
"A Domain?"
How could there be such an outrageous Domain?
The towering trees scattered across the surface were silently absorbed into this spreading, Domain-like phenomenon. Anything that touched these strange, dark substances would be sucked into an endless abyss and crushed into powder by extreme high pressure.
The trees emitted sounds of being gnawed away from the bottom, which was bone-chilling.
This bizarre sight made virtually everyone who saw the black ocean feel dread.
The original landmark of this place, Qi Lu Mountain, had an altitude of over 320 meters.
However, the entire mountaintop was slowly sinking, and at the edges, one could clearly see the rocks being shredded into powder.
"Gojo, what kind of being are you fighting?"
Suguru Geto, from a great distance away, had already sensed the Cursed Energy fluctuations emanating from Gojo Satoru.
The unrestrained burst of Cursed Energy undoubtedly meant Gojo was serious; he had used the Cursed Technique with the greatest destructive power he currently mastered.
He originally thought it would be an assured victory, but what followed was the complete disappearance of Gojo's Cursed Energy signature. It was as if he had been swallowed whole by something terrifying, only to witness this truly bizarre scene.
A single use of Blue (Ao) could easily destroy several hundred-meter-tall buildings. Yet, facing this terrifying enemy Curse User, it didn't even make a ripple.
Gojo Satoru and Suguru Geto felt this almost identically, though as the direct participant, Gojo's level of shock far surpassed Geto's.
"This has never happened before."
Gojo Satoru immediately felt his scalp prickle. What kind of monster was he facing?
Sweating profusely, he stared incredulously at the figure before him, who seemed to have done nothing yet had already thoroughly taught him a lesson.
And this kind of monster was from over 300 years ago.
Although people often say the old is definitely inferior to the new, especially regarding the evolution of Cursed Techniques, Cursed Techniques should theoretically be continuously refined.
But facing his Limitless, Gojo Satoru felt his own Limitless was old and fake, unable to gain any advantage whatsoever.
Whether looking at the Cursed Technique's range, intensity, consumption, or other factors, it far surpassed Gojo Satoru's current level.
Gojo Satoru even felt a sense of absurdity. Did one of their family's founding ancestors hold back a secret technique and fail to teach it to them?
"Gojo, how is it? Have you seen enough?"
Nearly 30 square kilometers were covered by Gojo Shinyan's Cursed Technique, yet the guy looked completely unexhausted and even had the leisure to chat.
Gojo Shinyan looked at the sweating Gojo Satoru with a complacent expression.
Clearly, this scumbag found immense pleasure in bullying his own descendant.
"This old fossil still has some tricks, huh."
"My Cursed Technique is built upon several hypotheses."
A black pointer appeared in Gojo Shinyan's hand, and then, the surrounding black ocean slowly converged to form an object resembling a blackboard.
It stood upright right beside Gojo Shinyan, quite large, allowing Gojo Satoru to see it completely.
Gojo Shinyan picked up the constructed chalk and quickly drew some things on it—some particle-shaped objects—and began lecturing to himself.
He wrote down the words "Quantum Mechanics" and then emphasized them.
"The most fundamental underlying logic of my Cursed Technique is Quantum Mechanics."
This was a Cursed Technique Revelation: boosting the effect of the Cursed Technique by revealing information about it during combat.
That is why Gojo Shinyan was explaining everything in detail to his descendant, Gojo Satoru, just like giving an academic report.
Once the principles of the Cursed Technique were fully explained, Gojo Shinyan would enter the second stage, and Gojo Satoru's situation would become even more dangerous—he would die!
"First, and most fundamental, is the Free Particle model in Quantum Mechanics. These particles are absolutely unaffected by force."
"I hypothesize that Free Particles have positive energy solutions and negative energy solutions. In the theory of Quantum Field Theory, after Secondary Quantization, these correspond to Positive Particles and Antiparticles, simultaneously triggering both positive and negative energy."
Listening to Gojo Shinyan's report, his relaxed demeanor suggested that this Cursed Technique was as simple as one plus one, and constructing it presented no difficulty at all.
"To maintain the lowest possible level for all indicators within the space, negative energy is prioritized for excitation, meaning the energy is Limitless!"
"Therefore, the consumption for me when activating this Cursed Technique is virtually zero."
"Gojo, you still have a lot to learn."
This highlights why studying the most cutting-edge theoretical scientific concepts is crucial for a Limitless user.
Certain things in science that cannot be achieved due to stringent conditions and can only be studied theoretically...
...can potentially be turned entirely into reality with the enhancement of Limitless.
For instance, the famous Ancient Greek Zeno's Paradox—Gojo Satoru's Limitless is the materialization of the abstract concept of the "Uncatchable Tortoise."
Therefore, turning theoretical concepts of multiple meanings from abstract to concrete is the true essence of Limitless.
Gojo Shinyan, hundreds of years ago, understood this principle. Thus, during that impoverished era where "people struggled to survive," he did not hesitate to cross the ocean to study the most advanced mainstream scientific thought of the time.
After returning home having completed his studies, Gojo Shinyan materialized all the knowledge he had acquired there using Limitless.
"dirac sea?"
Although Gojo Satoru didn't quite understand at first—after all, Jujutsu High didn't teach Quantum Mechanics—
—Gojo Satoru still relied on his exceptional memory to recall that scientists had indeed proposed a model, which seemed to have been built upon Gojo Shinyan's theoretical foundation.
This was the so-called "negative frequency part of a particle corresponds to the Creation Operator, and the positive frequency part corresponds to the Annihilation Operator."
Gojo Satoru blurted it out immediately, but the next second, he regretted it. He shouldn't have said that name.
The logic was simple: this guy was extremely intelligent. If he acquired more advanced modes of thought and model data, it would invisibly push the underlying logic of the Cursed Technique he mastered toward a higher level of deduction and upgrade.
"What is that?"
Gojo Shinyan was momentarily stunned.
Just as Gojo Satoru had said, Gojo Shinyan's paper on the "Study of Positive and Negative Energy Solutions in Free Particles" laid the foundation for a later special model called the dirac sea.
Unlike Gojo Shinyan's theory, that theory hypothesized that only real electrons could possess positive energy states, while the vacuum constructed externally was densely packed with electrons possessing negative energy states—an ocean composed of these infinite electrons with negative mass and negative charge.
That is the dirac sea.
Although the theoretical foundations differed, the results produced by both were essentially the same.
Gojo Shinyan's dark matter was filled with negative energy state electrons, and the energy generated between them was the source of the power that devoured everything.
His research stopped at this point.
However, later scientists delved even deeper based on this hypothesis.
They proposed: If electrons could possess negative energy states with energy levels as low as -mc², then virtually all electrons would transition to this energy level by radiating photons.
The energy generated instantaneously would be so great that the universe would be destroyed within one ten-billionth of a second.
Although this hypothesis was incorrect, Limitless could forcibly reverse causality to achieve this effect.
Fortunately, Gojo Shinyan was completely unaware of this and had no time to look up the information.
Even though he possessed a vision that transcended his era, he was still constrained by the limitations of the science and research available at the time.
He did not know this perspective.
He suffered from a lack of knowledge.
There was one quick way for Gojo Shinyan to increase his own strength: let him absorb the advancements in technology and various scientific theories from recent years. This would absolutely elevate his power to another dimension.
After all, 300 years had passed, and the technological boom had occurred twice. The countless philosophies born during this time were MODs that provided major version updates to the Limitless.
Relying solely on this rough, simplified model of the dirac sea, Gojo Shinyan instantly became the strongest Jujutsu Sorcerer of that era.
Gojo Shinyan's title back then was "Dark Night Monarch," meaning the King of the Night.
Upon returning home after completing his studies outside, he immediately dealt ruthlessly with his own clansmen.
When fighting other Jujutsu Sorcerer of the same generation, Gojo Shinyan found it easier than a father spanking his son; he easily crushed them and quickly became the top dog of the Japan Jujutsu World back then.
Gojo Shinyan shook his head.
"Kid, surely your Limitless doesn't only have these few tricks?"
Gojo Shinyan had expected Gojo to bring him a different kind of mental shock; after all, 300 years had passed, and everything had changed.
In such a grand environment, could no outstanding Jujutsu Sorcerer have emerged?
These children were all born standing on the shoulders of giants.
However, Gojo Satoru seemed unable to provide Gojo Shinyan with even a hint of shock; the only remarkable point was that anything attempting to infinitely approach Gojo Satoru became exceptionally slow.
As for Gojo Satoru's previous attack using Cursed Technique Lapse: Blue, Gojo Shinyan barely considered that an attack.
Gojo Shinyan cursed the bastard who summoned him here from the Underworld, thinking, 'How useless must you be?'
'They call this the "Strongest"? When did the threshold for the Strongest become so low?'
Doesn't this mean the Gojo Family has made virtually no progress in over 300 years?
Despite having the Six Eyes, his Jujutsu couldn't compare to the Cursed Techniques Gojo Shinyan developed independently; the overall older version was inferior even to him, a 300-year-old relic.
This was truly disappointing.
"Damn it."
He's an obsolete relic from 300 years ago. Why is he so powerful?
Gojo Satoru had never felt such pressure. If he didn't defeat Gojo Shinyan quickly, Riko would die.
Think carefully, Gojo Satoru!
There must be a key to breaking this situation, he just hadn't found it yet.
"Forget it. To be honest, Satoru, I'm very disappointed in you."
Gojo Shinyan felt a sense of frustration akin to hating iron for not becoming steel, lamenting that such excellent talent was being wasted.
"Reflect on yourself properly."
For a child like this, strong medicine was required.
"Purgatory."
Cursed Energy began to burn fiercely all over his body. Gojo Shinyan formed a hand seal, and the surrounding stagnant sea surface, which had been carved out like an underwater tunnel, instantly began to squeeze inward.
"Deathfall Annihilation!"
It was the base of a gigantic black waterfall, about one kilometer long, dropping down. The scene of the horizon where water met sky, relentlessly squeezing inward from both sides, was undoubtedly breathtaking.
The momentum was immense. Gojo Satoru, who was at the bottom, immediately felt a sense of dread. If he were trapped, there would undoubtedly be only one outcome: instant death.
Although he already knew it was the dirac sea, Gojo Satoru absolutely could not allow his physical body to enter the black liquid, fearing he would be torn into dust by the violent negative electrical energy.
Gojo Satoru wanted to rely on Limitless to take flight, but he was suddenly horrified to realize that his upward speed was nowhere near fast enough to escape the speed at which the surrounding black water surface was closing in on him.
He felt like a fish trying to escape an underwater whirlpool, but the current's drag effect made escape impossible.
Meanwhile, Gojo Shinyan, the technique user, floated up unhurriedly.
"What."
Before Gojo Satoru could react, an intense pain shot through his body the very next second, a pain that felt like he was being ripped into several pieces.
His vision completely plunged into darkness.
"Satoru!!!"
Suguru Geto, who was circling high above, let out a desperate, hoarse cry.
Because the area was vast, like a swamp, he had searched for a long time before finally finding the two of them. But the scene Suguru Geto arrived to witness was this.
Gojo Satoru was covered in blood, half his face submerged by the black liquid, leaving only his crystal-clear Six Eyes. They shone with dazzling light, like gems fallen into the mortal world.
The downfall of the Strongest was a sight that evoked endless sighs of regret.
Gojo Satoru could only watch helplessly as his heavily wounded best friend was engulfed by the terrifying, endless darkness.
"Suguru."
Before Gojo Satoru lost consciousness, he saw his brother's figure constantly diving down. He wanted him to run away quickly, but his eyelids felt as heavy as a thousand pounds, crushing him instantly.
"Run!"
Thorn-like spikes formed from the surrounding black ink-like liquid pierced straight through Gojo Satoru's body, then all condensed and gathered together from all sides, forming a rectangular Black Coffin.
In the end, even the gigantic Black Coffin was completely submerged by the black ocean, buried deep beneath the seabed.
Before he could even feel sadness for Gojo Satoru, the next person to rush onto the battlefield was—
Suguru Geto!
"How dare he... How dare he..."
Watching his best friend be swallowed by the darkness intensified Suguru Geto's ferocity; his wide eyes overflowed with boiling killing intent.
"He took Satoru..."
One black, swirling object after another appeared in the air beside Suguru Geto.
The scene was spectacular; nearly a hundred Grade 1 Cursed Spirit gathered, their terrifying black Cursed Energy completely engulfing the sky, creating a dense, dark mass that seemed to unleash demonic flames.
"Roar! Roar! Roar!"
At least one terrifying Cursed Spirit seemed to lurk in every black opening. Sensing their master's intense anger, they roared furiously in the air.
"A never-before-seen Cursed Technique."
A Cursed Technique capable of controlling Cursed Spirits was extremely rare, even based on Gojo Shinyan's experience.
Gojo Shinyan, standing unsupported on the black ocean, showed a flicker of interest on his face.
"Interesting. He's using Cursed Spirits as his weapons?"
The Cursed Spirits crawling out of Geto Suguru's Cursed Spirit Manipulation space all possessed ranged ground attack capabilities, preparing for a unified volley.
Suguru Geto's eyes widened; he had never wanted to kill a person this badly.
He looked down at Gojo Shinyan below and said in an icy tone.
"Die!"
Instantly, countless barrages of fire descended from the sky as if it were divine retribution.
It was a spectacle even more magnificent than a squadron of bombers deploying large cluster bombs.
The multicolored Cursed Energy cannons descending from the air tore through the atmosphere, friction generating heat, as they frantically rushed toward the ground one after another.
"Hahahahahaha."
Gojo Shinyan, situated at the center of the explosion, instead showed an expression of excitement.
His face was illuminated by the flashing light of the surging bombardment, yet he had not moved an inch.
A dangerous aura began to spread as a crimson light flashed in Gojo Shinyan's eyes.
Suguru Geto's summoned Cursed Spirit attacks were swallowed by the surging black ocean, thousands of streams engulfing them before they even reached the ground.
Of course, if that were all, how could Gojo Shinyan's true strength be highlighted?
Blood slowly trickled from the corner of Gojo Shinyan's mouth. He abruptly brought his hands together.
"For a brat like you, winning against me will take at least 10,000 years."
The very earth trembled.
"A tsunami?"
Suguru Geto's eyes were filled with shock, and even the Cursed Spirits, who knew no fear, let out terrified roars.
His mind went blank.
This was the true meaning of covering the sky and obscuring the sun.
You wouldn't need satellites; even a space station could easily observe it with the naked eye.
Two gigantic black tsunamis, towering three kilometers high, rose from the ground and pressed in directly from the left and right sides.
The terrifying oppressive feeling rushing toward him made it impossible to breathe.
There was no color other than overwhelming darkness. Even people without megalophobia would likely be terrified into developing it.
Even a steel behemoth weighing tens of thousands of tons would likely be completely capsized like a small fishing boat in this terrifying tsunami.
This was a super tsunami capable of easily swallowing an entire city, akin to a natural disaster.