Pokémon: Virus Evolution

A moment later, a violent storm began howling, sweeping up leaves, flowers, and grass across nearly half of Cerulean City. The raging winds spiraled toward the Cerulean City Police Department...

"Legendary-level power..." Nearly drifting into sleep, Oliver Doyle suddenly sat up in bed, gazing out the window and murmuring to himself.

"Sister, did you feel that?" With urgency in her voice, Violet, a young woman with deep blue hair, pushed open her sister's bedroom door. She looked anxiously at Sakura, the Cerulean Gym Leader, who was already donning her outerwear.

"Yes." Daisy nodded solemnly, her usual gentle expression now replaced with stern determination. "Get Lily. We're leaving."

In a grand manor on the outskirts of Cerulean City, a dimly lit hall was illuminated solely by a swaying crystal chandelier. An elderly man with graying hair stood silently by a massive, arch-like floor-to-ceiling window, gazing at the strange phenomenon unfolding in the city.

"Grandfather, something really exciting seems to be happening in the city!" A beautiful young woman beside him had a conflicted yet eager expression. "Ahh~ Please, Cerulean City, hold on! Otherwise, my date with Ophie tomorrow will be ruined..."

"Layla..." The elderly man shook his head helplessly. When would this granddaughter of his finally mature?

The storm raged on, and the immense power it carried awakened every keenly aware strong fighter in the city...

Cough cough cough...

"Cough... Quick, get rid of this... cough cough... smoke!"

The eye of the storm was eerily calm, and inside the Cerulean City Police Department, no one yet realized that the entire building had been engulfed by an overwhelming force.

The officers inside were struggling with an unexpected surge of black smoke.

"Open the windows, cough cough, now!"

"Everyone, hold your breath! Pidgeotto, use Gust!"

"Golbat, use Wing Attack!"

Trained to handle emergencies, the officers quickly opened all the doors and windows. Various Flying-type Pokémon unleashed their moves, pushing the thick, black smoke out alongside scattered documents that fluttered away in the wind.

Hahaha, blow all you want—I've already achieved my goal.

Venomous Plague.

Like a devil wandering the mortal world, Lucius led his virus swarm from one human host to the next, pressing the switch of death.

"Ah..."

"Ugh~"

Thud. Thud. One after another, people collapsed to the floor.

Inspector Peyton's gaze pierced through the thinning black fog, watching as his colleagues fell, their faces turning a sickly purple as their bodies convulsed.

"A deadly chemical attack on the police station?!" Peyton's mind instantly flashed to this horrifying realization.

Since returning from the Syndicate's base, he had been working nonstop—not only processing the captured Syndicate members but also reviewing surveillance footage from the Pokémon Center, hospitals, and streets to track Treecko's escape route. He hadn't even had time to go off duty.

"Everyone, put on your gas masks!" Peyton shouted before making a dash for the exit.

He knew he was too far from a mask. His best chance at survival was to escape to the open air.

Bang!

Holding his breath, Peyton kicked the door open and sprinted outside.

But before he could take in the fresh air, his vision was filled with an endless sea of brown and green.

The entire police station was encased within a colossal, hundred-meter-tall barrier formed by a dense mass of intertwining branches, leaves, and flowers, leaving no gaps.

Even just looking at it, Peyton could sense the sheer, terrifying power swirling within the rotating barrier—an overwhelming force beyond human control.

There was no way out...

"What the hell is this..." Peyton muttered, eyes wide in disbelief.

Outside the massive barrier.

Dragonite's massive frame descended at high speed, kicking up strong winds that sent Misty's vibrant orange hair into a wild dance.

"Whoever you are, your actions have already caused immense harm to the people of Cerulean City. Stop immediately." Oliver Doyle cast a glance at the Celebi glowing green, then shifted his gaze to the young man standing solemnly behind it—Ash Ketchum.

"Mr. Doyle..." Ash looked at the man riding Dragonite and said slowly, "I will explain everything to you shortly."

Hearing the young man call his name, Oliver frowned. He didn't recognize him.

Oliver spoke in a deep voice, "Sir, please cease whatever you are doing immediately. Then we can take all the time we need to discuss your reasons."

He hadn't acted yet because, although the young man before him appeared only around twenty, the aura surrounding him was immensely powerful—akin to Alder, the Champion of Unova. No, perhaps even stronger than Alder's.

A leader of this caliber, at such a young age... Oliver had never heard of him before.

His vigilance rose to the highest level.

Ash sighed. In the future, after the Great Cataclysm, he and Oliver had fought side by side against an army of undead Pokémon. But right now, Oliver didn't know him.

And knowing Oliver's personality, Ash understood this wasn't a man who would easily back down.

"Mr. Doyle, if I told you I came from seven years in the future, would you believe me?" Ash locked eyes with Oliver, his voice firm.

Seven years in the future?

Oliver instinctively wanted to refute the claim, but then his gaze flickered to Celebi, who was still using its powers. The legends surrounding it flashed through his mind...

"Huh? What's going on at the police department?"

"Is that Celebi?! A Legendary Pokémon? Quick, take pictures and post them online!"

"What are they doing? A Pokémon battle?"

"Maybe they're robbing the police station..."

As time passed, a crowd began to gather, including trainers and onlookers taking videos with their phones.

Clearly, Celebi's massive display had drawn the attention of all of Cerulean City.

"A powerful young trainer... Even if you are from seven years in the future, why are you doing this?" Oliver grew more anxious as the crowd increased.

Unclear situations like this were troublesome. The more unrelated people got involved, the harder it would be to manage both the crisis itself and the public narrative afterward.

"Mr. Doyle, let me explain." The eighteen-year-old Misty stepped closer to Oliver. She paid no mind to the clear wariness in his expression and spoke softly, "We are all from seven years in the future. Tonight, a terrifying plague will break out here—one that will spread like wildfire across the world. Or rather, a virus. This virus is unimaginably horrifying. Not only will it kill over 90% of the world's humans and Pokémon in the future, but it will also bring forth even greater evils."

"We traveled back in time to eliminate this virus here and now, before it can spread beyond this place." Misty's voice was quiet, heard only by Oliver.

"A virus?" Oliver frowned, finding it hard to accept.

It was understandable. Two strangers had suddenly appeared, claiming a virus would soon destroy the world.

Who would believe such a thing?

But a Champion-level trainer's strength wasn't just about their Pokémon—it was also about their ability to think beyond the ordinary.

Oliver processed their words for a few moments before asking, "How can you prove it?"

"My sister is the Cerulean Gym Leader. She should be arriving soon." Misty glanced at the barrier, its range beginning to shrink. Her expression was unreadable—somewhere between relief and sorrow.

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TL/N:

This Ash here seems like a mature one. This is my first time seeing Ash this calm and composed. Or maybe it is just me, because I haven't finished most pokemon fanfic I am currently reading.

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