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[Dear readers, if you have any suggestions or notice anything I've gotten wrong, such as typos or grammatical errors, feel free to mention it in the paragraph comments or regular comments. I'll make the corrections as soon as I see them.]
Age 764, Mount Paozu.
The window of the little round house stood open. A breeze drifted in, making it hard to keep one's eyes open.
Son Gohan was sprawled across the desk, a butterfly perched in his hair. His face was pressed against a pile of unfinished math exercises, and he was fast asleep in the middle of his nap.
Then his eyes snapped open. He stared blankly at everything around him.
"...Where am I?"
Son Gohan's thoughts drifted back a few days. He remembered that he'd originally been a miserable office worker in the twenty-first century. Every morning he squeezed onto the subway, and every night he worked overtime until midnight. He worked himself to the bone day after day, and his pay was still lousy.
He'd just gotten paid that day and was planning to treat himself to a big meal, hoping to be a little nicer to himself. But he'd apparently forgotten to check his horoscope before heading out. After eating his fill, he'd just walked out of the restaurant when a heavy truck barreled straight toward him.
Its high beams were so blinding he could barely see.
His last memory was a field of white light.
Just when he thought he was about to leave this world behind, he'd opened his eyes and realized he'd somehow been transported to the Dragon Ball world.
And then—
Outside the window were the woods of Mount Paozu, and the distant sound of a waterfall reached him faintly.
That was where his memories ended. Son Gohan was certain he'd been transported to the Dragon Ball world, where powerful fighters casually destroyed planets and even entire universes.
"This is way too surreal. I really did get transported to another world..."
Son Gohan muttered to himself, stunned for a moment. Then the memories of both his lives began to blend together in his mind.
He remembered everything.
Son Gohan sat in his chair and took about five minutes to fully process what had happened.
As a lifelong Dragon Ball fan in his previous life, Son Gohan knew the entire story, from the Saiyan Saga to the Planet Namek Saga, from the Android Saga to the Majin Buu Saga.
And because he knew it so well, he understood his situation all the better.
This was a world where the powerful could casually destroy planets and wipe out universes.
In this world, principles and rules were meaningless. Only overwhelming strength could guarantee survival.
In the original story, Son Gohan was a half-breed, but he had the greatest talent and potential of all the Saiyans. It was just that he was too indecisive, a bit reckless, and didn't like fighting.
And what happened later?
His mother, Chi-Chi, interfered, and he eventually gave up training to focus on his studies. That was how he became Nerd Gohan.
Son Gohan's mouth twitched at the thought.
"Damn it, I'm still studying right now."
But now that he'd become Son Gohan, he'd never let Nerd Gohan's life become his own! His soul from two lifetimes had merged, and his talent and potential had doubled.
The greatest talent and potential, plus a transmigrator who knew the story.
Son Gohan looked at his still-young, seven-year-old body. Complicated feelings welled up inside him, and he couldn't help sighing. He still had to work harder!
Before long, though, Son Gohan felt relieved.
There was something else, too. It wasn't just his soul that had crossed over; something new had appeared deep in his mind.
Son Gohan closed his eyes and focused on the depths of his mind.
A cluster of clear, iridescent crystals floated quietly in his sea of consciousness, radiating dimensional energy that didn't belong to this world!
It took him quite a while to figure out what the Dimensional Seed could do.
The Dimensional Seed greatly enhanced his control over ki.
It also boosted his recovery. Ki spent and injuries sustained in battle would heal far faster than normal.
"And there's one more thing—the most important part!"
Son Gohan opened his eyes. A glimmer of iridescent light flashed deep within them.
Once the Dimensional Seed's energy was fully charged, it could travel through space and time.
What did that mean?
It meant Super Saiyan 4, Super Saiyan 4 Limit Breaker, and even Super Saiyan 5 were all possible!
And that wasn't all.
Given the potential of this treasure, once the Dimensional Seed reached its ultimate stage, it could break through the dimensional walls of the multiverse and reach entirely different worlds.
At the thought, Son Gohan couldn't help smiling.
"This really is—"
Just then, the phone rang.
"Ring, ring—"
The ringing pulled Son Gohan out of his thoughts.
He picked up the receiver, but before he could speak, the voice on the other end immediately asked,
"Gohan!"
It was Krillin.
He sounded urgent and clearly nervous.
"Can you feel it? There's an incredibly evil ki—really, really powerful!"
As soon as Krillin finished speaking, Son Gohan closed his eyes and focused all his senses on detecting ki.
It was the first time he'd deliberately used this ability since arriving in this world.
Every other sound around him faded away.
Sure enough, he sensed it!
It was far away, rushing toward Earth at incredible speed.
Two especially powerful, evil ki signatures stood out, radiating the chilling pressure of villains.
He recognized that ki. He'd felt it on Planet Namek.
It was Frieza.
But there seemed to be more than just Frieza.
Another ki, even more powerful and intense, was right beside him. It seemed stronger than Frieza.
It had to be Frieza's father, King Cold.
By then, Son Gohan had already hung up. He opened his eyes.
"They're here."
His voice was calm, but his heart was pounding.
This was the end of the Planet Namek Saga, leading into the story of Mecha Frieza bringing his father to Earth to take revenge.
According to the original story, they were at the point when the others had just returned from Planet Namek. Frieza hadn't been killed yet, and he would be rebuilt as Mecha Frieza before coming to Earth with his father, King Cold, to take revenge.
But there was no need to worry. Future Trunks would arrive in his Time Machine and slice Frieza into pieces like a Fruit Ninja, then finish him off with a Tri-Beam. It'd be quick and clean, and Son Goku wouldn't even get to claim the kill.
Future Trunks.
Son Gohan repeated the name in his mind.
He still wasn't strong enough, so he'd just follow the story for now.
With that thought, he jumped down from his chair and opened the door.
His mother, Chi-Chi, was standing by the kitchen entrance, wearing an apron and holding a basin of vegetables.
Son Gohan spoke first.
"Mom, Earth is in danger. Evil enemies are coming, and I have to fight."
Without waiting for Chi-Chi to react, he sank down sharply.
Boom!
A white aura burst around him, enveloping his entire body. A fierce wind swept out of the house.
Chi-Chi nearly dropped the basin. Before she could stop Gohan, he was already gone. By the time she turned around, all she saw was a streak of white light shooting into the sky and vanishing above the woods of Mount Paozu.
"Gohan—!!!"
Chi-Chi's furious shout rang out behind him, but Son Gohan was already far away.
The wind roared in his ears as the trees and rivers below raced past.
He'd dreamed of flying with the Dancing Sky Technique for ages in his previous life. Now that he was finally doing it, he had to admit—it was pretty awesome!
And it felt much easier than he'd expected.
Normally, a seven-year-old Son Gohan flying for this long would have used up a lot of ki. But his ki remained frighteningly steady.
The Dimensional Seed's precise control over ki was even more useful than he'd imagined. Who knew how terrifying it would become later?
Every bit of ki he used was exactly right.
As Son Gohan flew, the evil ki drew closer and closer to Earth.
Far away, on the horizon—
A huge, dark mass was breaking through the clouds.
Frieza's and his father's spaceship was "just around the corner."
Son Gohan took a deep breath. His white aura erupted in a ring, and his speed increased again.
He transformed into a streak of light and flew toward that patch of sky.
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