Another three years had passed.
At Capsule Corporation, 500 meters underground, the latest model gravity training room awaited.
The walls were built from one of the hardest materials in the universe, "Kakin Steel," capable of withstanding the impact of a small planet.
On the control console, red numbers flashed boldly: 30G.
Under gravity strong enough to crush a tank into a flat disc, a small figure, just over a meter tall, walked with deliberate, steady steps.
He wore a black mini nano-combat suit. Underneath his short black hair, his eyes shone with a cunning and calmness far beyond his age.
This was Krillin and Bulma's four-year-old son, Tarin.
"Zero, bring me my juice. Make sure it's ice-cold."
Tarin stopped, addressing a trembling household robot in the corner.
"Wa… warning… under 30 times gravity… structural integrity… insufficient…"
The robot's voice sputtered in broken electronic tones.
Tarin curled his lips into a wicked smile, eerily reminiscent of Krillin's own mischievous grin.
"Useless."
With a flick of his small hand, an invisible wave of ki lifted the juice cup from the distant table, precisely delivering it to him.
He tilted his head back and drank it all in one gulp. Tossing the cup casually, he shattered it midair with a precise ki blast from his other hand.
"Clean that up."
He issued his final command to the robot and continued his gravity-walk training.
This child had perfectly inherited Krillin's cunning, Bulma's intelligence, and the combined, head-turning "little tyrant" streak.
At that moment, the gravity room doors opened, and Krillin walked in.
"Dad!"
Tarin's face instantly lit up with innocent joy, and he ran over, skipping excitedly.
Krillin casually reset the gravity to normal and scooped his son into his arms.
"Training's over for today. We've got visitors."
"Visitors? Are they bringing snacks?"
Tarin licked his lips eagerly.
"Yes, and there's a kid about your age too."
When they arrived in the luxurious living room above ground, they found Goku awkwardly perched on the sofa, holding a giant fruit platter and devouring it hungrily.
Behind him, a boy in a neat little suit, sporting a bowl haircut, peeked timidly from behind, only daring to reveal one eye at a time.
This was Goku and Chi-Chi's four-year-old son, Gohan.
"Yo, Goku! Long time no see."
Krillin greeted cheerfully.
"Krillin!"
Goku immediately set down the fruit platter, ran over happily, and gave him a bear hug.
"Your son's already this big! He looks solid! Where's Master Roshi? Haven't seen him yet."
"Don't know, probably went to the beach."
Krillin waved and gestured for Goku to sit.
Bulma also walked over, taking Chi-Chi's hand warmly as they began chatting.
While the adults exchanged pleasantries, the children's eyes locked midair.
Tarin, acting like a young lord, crossed his arms and sized Gohan up from head to toe.
The boy before him, dressed in a ridiculous outfit, looked timid and mouse-like.
His ki, though not weak, was scattered and chaotic, like a towel left wrung halfway dry.
Gohan shrank back, clutching Goku's pants as if trying to hide entirely.
"Hey, what's your name?"
Tarin spoke first, his tone carrying a command that left no room for refusal.
"I… I'm Gohan…"
Gohan's voice was faint as a mosquito's buzz.
"Gohan?"
Tarin tilted his head.
"I'm Tarin. Want to spar with me?"
"Ah?"
Gohan froze, shaking his head frantically.
"N-no sparring… Mom says fighting is wrong. I need to be a polite, good kid."
Tarin's expression twisted into extreme disdain, identical to the look Krillin would give Yamcha when mocking him.
"My dad says a man who can't fight is the useless one. What a waste."
"I… I'm not useless!"
The word stung. Gohan mustered the courage to respond, though his eyes welled with tears.
The adults' attention shifted.
Chi-Chi immediately wanted to intervene but Bulma held her back.
"Let the kids handle it themselves," Bulma said with a smile, her eyes gleaming with anticipation.
She had absolute confidence in her son's strength.
Krillin watched with interest, curious to see the sparks that would fly when these two children, both with unlimited potential, collided for the first time.
"Not useless? Then prove it!"
Tarin gave Gohan no chance to react. The small figure vanished instantly.
So fast!
Everyone present, except Krillin and Goku, felt the same shock.
Tarin hadn't used any ki. He was relying purely on the raw physical power inherited from the Saitama Template.
To Gohan, all he saw was a black shadow hurtling toward him.
The Saiyan instincts made Gohan dodge instinctively.
"Oh? Can dodge that?"
Tarin was slightly surprised, but his attacks became even more fierce.
His tiny fists cut through the air, each punch and kick simple but blindingly fast.
Gohan, though terrified, felt his bloodline awaken under the pressure.
He twisted, rolled, and leaped, narrowly avoiding each strike.
His movements were chaotic and instinctive, yet his innate talent shone through.
Tarin grew impatient. He accelerated suddenly, appearing in Gohan's blind spot, delivering a light hand strike to the back of Gohan's neck.
"Thud."
Gohan fell to the floor, stunned but unharmed.
Looking at the adults around him and then at Tarin standing like a victorious little general, feelings of fear, helplessness, and resentment welled up inside him.
"Waaah!"
Gohan finally let out a full cry.
But with his sobs, a massive surge of ki, far stronger than usual, erupted from him.
The ki carried fury and frustration, forming a visible wave that tossed rugs and decorations across the living room.
Tarin was hit head-on, forced back a step.
He steadied himself and, instead of fear, his face lit up with exhilaration.
"Hey! So you're not just a crying little coward after all!"
He licked his lips, and his own ki flared in response, radiating the same domineering aura.
"Interesting! This is way more fun!"
The two four-year-old monsters, for the first time, displayed in Capsule Corporation's living room a terrifying potential capable of making most Earth martial artists despair.
Goku scratched his head, pure delight on his face.
"Wow! Gohan's amazing! Krillin, your son's super strong too!"
Krillin, however, stared at Gohan as he got up, still crying but assuming a defensive stance. His eyes deepened, filled with fascination and intrigue.