Mount Fuji, Japan's most famous landmark, is also an extremely dangerous active volcano.
If left undisturbed and handled calmly, it would likely take thousands of years before a potential eruption.
But once subjected to a violent impact or intense energy fluctuation, this long-slumbering beast would bare its sharpest fangs!
"Run! If Mount Fuji erupts, all of Japan will be plunged into doom!"
"Hello, United States? I want to book three tickets for the Ark. Yes, now, immediately!"
In an instant, not just Tokyo, but all regions of Japan fell into infinite panic.
BlackWarGreymon hovered mid-air, his gaze cold. He watched everything below in silence.
'Weak, selfish, indifferent, willing to abandon everything for profit...'
'Such humans, indeed, as Taichi and Agumon said, need a king to rule them.' BlackWarGreymon narrowed his eyes slightly, retracting a wisp of his dark aura.
In truth, even before coming to the human world this time, he had a possible answer in his heart.
"Hey, big guy, if it doesn't work out, why not follow Taichi?" The salty sea breeze blew as BlackWarGreymon and Agumon gazed at the coastline, sitting side by side.
"He's too weak. Moreover, I haven't seen the human world he spoke of with my own eyes. I can't judge if what he's doing is right." BlackWarGreymon looked at the blue sea, replying calmly.
"Ten years ago, he was even weaker than now. So weak he couldn't lift a steel sword, so weak even a slightly stronger child could knock him down."
Agumon didn't press further.
Instead, his gaze grew distant, a slight smile on his lips as he reminisced about the past.
"But it was that very Taichi."
"He led the other six children, which aside from Koshiro and Hikari, were almost useless…"
"And defeated one powerful enemy after another: Devimon, Myotismon, the Dark Masters, Apocalymon... saving the human world back then."
BlackWarGreymon's pupils contracted slightly.
Even he had heard of the Dark Masters' fame.
'Those four who ruled an era were actually defeated by Taichi?'
'That incredibly fragile human?'
"Back then, he was the symbol of courage, representing humanity's most fearless ode. Do you know how difficult it was for a child merely ten to complete so many adventures and unite a bunch of kids with vastly different personalities who often fought?" Agumon looked at his own palm, smiling self-deprecatingly.
"Sometimes, I wonder, did we help Taichi, or was Taichi always dragging us forward?"
Whenever he thought of those perilous scenes from ten years ago, Agumon's heart would constrict, aching with heartache.
'But now, it was better. Taichi had found the right guidance, rediscovered his own path in life.'
Agumon's eyes gradually grew bright.
"Saving the world was a lie. The Digital World is simply the flip side of the Real World. If not for the endless negative garbage in the real world, how could Virus-type Digimon emerge again and again?"
"Trust Taichi. He has the ability and the courage to rule both the Digital and Human Worlds. Honoring him as king is something you will never regret."
BlackWarGreymon's pupils contracted sharply, his voice hesitant.
Agumon was his best friend, the only one he trusted.
Taichi was the most determined human he had met, rising again after betrayal.
It took only a little over a month.
During this period of ruling the Digital World and conquering various regions, his aura of a conqueror and overlord had begun to take shape.
Given time, as Agumon said, he would undoubtedly become king.
"I don't want to be bound by anyone. Whether Taichi is worth following, I must decide for myself after seeing the Real World." BlackWarGreymon was inherently free, constrained by no one.
Even if it was his best friend's request, he had to judge for himself before deciding.
What followed was him finding the Digital Rift and coming to the Real World.
Back to the present.
Looking at the ugly actions of the humans below, BlackWarGreymon shook his head in disappointment.
'Weak was one thing.'
'But they weren't even united.'
'This place held no answer I sought.'
Whoosh!
BlackWarGreymon's body was enveloped in a dark aura, transforming into a black tornado as he vanished from the spot instantly.
And the volcanic disaster was only just beginning!
Meanwhile, in United States, a luxurious hotel room.
[Beep, beep. Volcanic warning from Japan. Full eruption expected within three hours.]
[Beep, beep. Tsunami warning from Japanese's coast. Expected within eleven hours.]
[Beep, beep...]
"Turn them off! Turn off all disaster alerts!"
"Yes."
Koshiro looked anxious and irritable, his hands flying across the keyboard, inputting a long string of code rapidly.
He had found it.
The cause of this Digital Crisis, Taichi's whereabouts, and the reason for Japan's natural disasters.
"It's Apocalymon!"
Beside him sat a visibly uneasy and guilty Joe.
A few hours ago, Koshiro had located him using a certain device.
Koshiro told him that his negative emotions were causing Apocalymon to grow stronger.
The rift between the Digital World and the Real World was widening.
And Taichi's disappearance might be related to this.
"Do I really have that much influence? Could it be something else..." Joe sat on the bed, muttering quietly.
In truth, Joe was completely taking the blame.
Koshiro's World Contamination Detector could only locate the source of negative emotions.
Based on the negative emotions, it found the rift between the Digital and Real Worlds.
Then he would seal the Digimon who wandered unconsciously into the Real World.
But he got one thing wrong.
This Digital Rampage wasn't an unconscious act by Apocalymon at all.
It was the work of a mastermind, a behind-the-scenes hand from Taichi, coldly manipulating things from the world's shadow.
However, although he misidentified the cause, Koshiro still had ideas on how to resolve these disasters.
"A few hours ago, the Digital World's source code suddenly became completely accessible. I can quickly write a program to evolve Digimon to the Mega level, unleashing the old Crests." Koshiro typed on the keyboard, muttering to himself.
The opening of the source code was, naturally, a silent assist from Homeostasis, the will of the world, working behind the scenes.
Homeostasis couldn't directly intervene in the Real World but could find agents.
Someone as brilliant as Koshiro was the most suitable candidate to save the world.
"As long as the program is successfully written, both my Tentomon and Joe's Gomamon can enter the Real World and evolve to their final Mega states to withstand this disaster."