### Chapter 5: Kouki After Growing Up
The following days became routine yet full of surprises.
The first thing Bang did was to teach Kouki how to read.
This wasn't a problem for Kouki at all.
Then, he taught him everything about the essence of the Water Stream Rock Smashing Fist—the "artistic conception" of flowing like water and turning hardness into softness.
As for strength?
The dormant bloodline power within Kouki didn't need any deliberate honing.
If his power increased too quickly, there would be a risk of losing control.
Was the name of the Legendary Super Saiyan just for show?
Kouki's talent could be called monstrous.
That profound artistic conception of flowing water was as natural as breathing in his hands. In just a short time, he had mastered it completely and could even draw analogies to deduce new variations.
However, the peaceful training by the small river was broken.
Kouki withdrew his stance, his clear eyes looking at Bang beside him with a hint of trouble: "Grandpa, the artistic conception of the Water Stream Rock Smashing Fist has indeed allowed me to control my physical strength meticulously. But... how should I control this violent 'Ki' inside my body?"
Saiyans were born with destructive energy, but their use of "Ki" had always been simple and crude.
Ordinary Saiyan warriors might only need rough guidance.
But Kouki couldn't.
The "Ki" within him, as vast and boundless as a star, would backlash and go out of control with the slightest carelessness.
Son Goku could reach the peak not only because of his exceptional talent but also because his perfect control of "Ki" was key.
This was exactly Kouki's bottleneck at this moment.
"Ki? You mean... that amazing energy inside your body?"
Bang looked confused.
He had dedicated his life to pure martial arts, honing his body to the limit.
The seemingly graceful "special effects" of the Water Stream Rock Smashing Fist were just the powerful currents created by the ultimate fist wind.
Although he could sense the terrifying energy dormant in Kouki's body, the concept of "Ki" felt unfamiliar to him.
"Doesn't everyone have Ki?" Kouki tilted his head, his tone certain. "I can 'see' it, Grandpa also has very powerful Ki inside him!"
—This was exactly his little plan.
As a martial arts grandmaster who had polished his physical body to the peak, the "Ki" contained within Bang was as majestic as the sea, just never awakened.
Kouki wanted to use this opportunity to return the favor for guiding him.
"Oh?!"
Bang's body shook, a sharp light flashing in his eyes.
Kouki's words were like a stone thrown into an ancient well, stirring up a thousand waves in his heart.
Ki?
Everyone has it?
Why had he spent his whole life pursuing martial arts but never thought about the essence of this power that was right within reach?
"Grandpa~~ Look, this is 'Ki'!"
Taking advantage of the moment Bang was deep in thought, Kouki opened his palm.
*Buzz!*
A dazzling golden ball of Ki condensed out of thin air, illuminating the riverbank like a small sun. Halos flowed, emitting pure energy fluctuations.
Bang's pupils suddenly contracted, staring fixedly at that ball of light: "Th... this is 'Ki'?!"
He held his breath and concentrated, using his lifetime of martial artist acumen to sense and touch the pulse of that energy.
An unprecedented enlightenment, like ice cracking in early spring, quietly spread in his heart.
For a grandmaster like Bang who had developed his body to the limit, understanding the existence of "Ki," sensing its flow, and even controlling it was actually separated only by a thin layer of paper.
You have to know that even Videl, under Gohan's guidance, mastered the use of Ki in just a few days, let alone Bang.
The difficulty was that no one had ever pushed open that door to the new world for him.
At this moment, Kouki was that door pusher.
Once he understood that the essence of "Ki" was another pure manifestation of life and strength, Bang's exploration was like opening floodgates, unstoppable.
Just tens of minutes later—
"Hahaha—!!!"
Bang, who was sitting cross-legged, suddenly stood up and burst into hearty laughter.
He lifted little Kouki up, his eyes shining with the pure wild joy of a child.
He not only clearly "touched" the surging "Ki" within his body but also saw the martial arts bottleneck that had been stagnant for years blast open, revealing a wider world ahead!
For a martial arts fanatic, this was simply rain from heaven!
"Kouki! Good boy! Thanks to you! What do you want to eat today? You can have as much as you want!" Bang said heroically.
"Roast meat!"
Kouki's eyes lit up, his answer decisive.
"Roast... roast meat?!"
Bang nearly choked on his own saliva.
He looked at the little bean sprout in his arms who was only a few months old, disbelief on his face.
Such a small baby, eating roast meat?!
"Mm-hm!"
Kouki nodded his little head like a chick pecking at rice, his eyes full of longing.
Milk powder?
He had wanted to throw up from drinking it long ago!
Meat!
He craved tender, juicy meat!
"...Then... we can only try a tiny bit first."
Bang was skeptical.
Although he knew this child was different from ordinary people, it was always right to be cautious.
However, facts proved that Kouki could not only eat roast meat but his appetite was... quite astonishing!
That tiny body consumed meat like a whirlwind scattering clouds, eating almost as much as a grown man!
Bang watched until his eyes nearly popped out, clicking his tongue repeatedly: "Little monster! Truly a little monster!"
From then on, a heavy stroke of color was added to the daily picture.
While Bang taught Kouki the artistic conception of fist techniques, he also plunged headfirst into the cultivation of "Ki."
A grandmaster is a grandmaster!
Relying on his ultimate control over his body and profound martial arts foundation, as soon as he got started, he tamed this new power at a jaw-dropping speed.
Even rarer was that he unreservedly taught the Ki control methods he comprehended to Kouki in meticulous detail.
This was exactly Kouki's other purpose in guiding him onto this path.
Bang's decades of martial arts experience meant that even if he had just grasped "Ki," the depth of his understanding and application skills far exceeded Kouki, this uncut gem with exceptional talent but lacking guidance.
With the careful teaching of this top-tier grandmaster, Kouki's martial arts path undoubtedly avoided countless detours.
A few days later, Bomb visited again.
Bang, whose strength had skyrocketed due to "Ki," naturally couldn't help but "show off" a little in front of his older brother.
In the brotherly spar, Bomb, who usually had the upper hand, was actually faintly suppressed by his younger brother this time!
This huge change astonished Bomb greatly.
Bang held nothing back from his brother and immediately taught him the secrets of "Ki."
The result?
Bomb simply stayed at the dojo and wouldn't leave!
The two brothers sparred and pondered daily, jointly researching the mysteries of "Ki," and incidentally teaching Kouki, this magical little disciple, together.
Time flowed like the trajectory of the Water Stream Rock Smashing Fist, seemingly slow but actually swift.
In a flash, sixteen years slipped by quietly.
Bang's Dojo, deep in the back mountain.
"Kouki—!"
Bang's powerful call echoed through the forest.
After a moment of silence—
*Whoosh! Whoosh! Whoosh!*
A figure agile as a cheetah shuttled and leaped at high speed among the towering ancient trees!
Branches and leaves trembled slightly, afterimages lingering.
In just a few breaths, that figure landed steadily in front of Bang.
Shockingly, this tall figure, clearly taller than Bang, was effortlessly carrying a large, colorful tiger weighing over five hundred pounds in each hand!
...