The Cause of Sun Wukong's Heart Condition is Confirmed

King Kai's Planet

"Your name is Son Gohan, right?"

"Yes, Lord Kai."

"Kaio-ken is a set of techniques I created. While it's called a 'fist technique,' it's actually a secret art to boost Ki. As a secret art, it comes with certain side effects. Using Kaio-ken can cause unbearable pain throughout your body in mild cases, and a life-threatening crisis in severe ones. Knowing this, do you still wish to learn it?" King Kai asked.

Son Gohan was well aware of these side effects. But as the creator of Kaio-ken, King Kai himself didn't fully grasp its monstrous potential. After all, ordinary people could never push Kaio-ken to its limits!

Only Saiyans, with their freakish bodies, had the potential!

Furthermore, after reviving from a life-threatening crisis, their power would surge!

Kaio-ken, paired with Senzu Beans, was practically tailor-made for Saiyans!

"I want to learn it, and I'm confident I can bring Kaio-ken to unprecedented new heights!" Son Gohan declared with full confidence.

"Good, I'll teach you!!" Hearing Son Gohan's words, King Kai decisively stopped hesitating!

"With each increase in Kaio-ken, your power will double from your base fighting strength!..."

King Kai began to explain how to cultivate and use Kaio-ken!

It turned out that the so-called Kaio-ken was to double the speed of one's own cell division!

For every increase, the speed of cell division would double!

Cell division, death, and rebirth were originally rules that the human body operated under autonomously!

But Kaio-ken altered this rule. Before the divided cells could die, they would divide again. Everyone's strength was intrinsically linked to their own body. With Kaio-ken's alteration, power naturally doubled. Of course, this came with immense pressure on the body, bones, and internal organs!!

The pressure on the heart, in particular, would double. After all, the heart was the body's engine. To achieve rapid cell division, the heart's support was essential to provide sufficient power!

Hearing this, Son Gohan finally confirmed the cause of Son Wukong's future viral heart disease!

The Ultra Divine Water he drank as a child possessed potent toxicity. Son Wukong, as a child, hadn't fully digested it like Son Gohan had, leaving a trace of poison in his heart.

Originally, with his ever-strengthening body, he could have suppressed this trace of poison.

But after learning Kaio-ken, an accident occurred. Overusing Kaio-ken put immense pressure on his heart, preventing him from perfectly suppressing the toxicity!

Although he recovered his stamina and health each time he ate a Senzu Bean!

That trace of poison had long since merged with him, and even Senzu Beans couldn't eliminate it. Coupled with his successful Super Saiyan transformation during the Frieza Saga, the 50-fold power increase became the final straw!

The toxicity fully erupted during the Android Saga, after Son Wukong transformed again!

If not for Future Trunks bringing the special medicine, he likely wouldn't have recovered!

"Using your own Ki to ignite your cells and cause them to divide rapidly. This is the principle of Kaio-ken! Do you understand?"

"I understand, Lord Kai. You are truly brilliant. I never expected you to be so knowledgeable about human anatomy!" Son Gohan's words were filled with admiration.

This unassuming fat man before him, though not strong, was indeed intelligent!

"It seems that in this Dragon Ball world, another truth is that you can never underestimate unassuming existences. Kai, Majin Buu, Mr. Popo, Zeno..." Son Gohan muttered to himself.

He recalled the unassuming yet monstrous beings in the Dragon Ball world!

"You understand the principle. Next, I will teach you how to operate it specifically to achieve the successful execution of Kaio-ken!" King Kai began to truly impart the skills of Kaio-ken.

Son Gohan listened intently, like a model student, without blinking.

As King Kai spoke, he had Son Gohan try it out!!

Three hours later!

"Lord Kai, please step back. This is my first time using it, and I'm afraid I won't be able to control my Ki!" Son Gohan clenched his fists, preparing for his first true attempt.

"It's fine. Even if you succeed, you won't do anything to me!" King Kai grew overconfident.

Because Son Gohan deliberately suppressed his Ki, King Kai hadn't detected Son Gohan's true strength.

"Heh heh... It's really like an old lady crawling into a quilt... Yah! Kaio-ken!!" Son Gohan erupted before he could even finish his sentence.

The moon-sized King Kai's Planet instantly shook, and houses collapsed with a roar!!

King Kai was instantly blown to the only fruit tree on the planet, clinging to it tightly!

"Hey, hey, hey, Son Gohan, control yourself! Otherwise, you'll destroy my home!!" King Kai shouted indignantly.

But Son Gohan, using Kaio-ken for the first time, had no way to control it!

BOOM!!! WHIZZ!!!

Son Gohan's small body instantly swelled slightly, his muscles bulging. His clothes billowed as if blown by a powerful fan. The white aura from his normal power output instantly turned red!

His hair also stood up slightly!!

His fighting power surged from five million points to ten million points!!

"Triple Kaio-ken!!!" Son Gohan roared.

His fighting power surged again, reaching fifteen million points!

"Enough, enough... Stop, stop it!!" King Kai shouted, trying to halt him.

"Ah, spare me!!"

"Who is it... I'm dying..."

"You're already a soul, dying again would mean complete annihilation!"

Son Gohan's pressure spread throughout the Underworld, causing unrest in every corner.

In the hell beneath King Kai's Planet, the sounds of wailing ghosts could be heard!

The souls queuing up at King Yama's side were in an uproar!

It was truly earth-shattering and ghost-wailing!

After all, Son Gohan hadn't suppressed his aura this time, unlike when he transformed into a Super Saiyan on Earth!

Even with a power level of fifteen million, at this point in time, it was monstrous enough!

"Son Gohan, stop immediately," King Kai shouted again to stop him.

"Lord King Kai, I feel like I haven't reached my limit yet. I can still improve!!" Son Gohan said reluctantly.

"If you don't stop, you'll shatter King Kai's Planet! Can't you hear the evil spirits in hell wailing??" King Kai said urgently.

"Alright then," Son Gohan slowly withdrew his pressure, his King Kai Fist form receding, returning to his normal state!

"Whoosh!!!" King Kai landed, wiping the sweat from his brow.

"Son Gohan, you never told me you were this monstrous! I doubt there are many in the entire North Galaxy who could be your opponent!!" King Kai said with dissatisfaction.

"You never asked. Besides, I don't think I'm that strong in the North Galaxy!!" Son Gohan thought of Majin Buu, sealed on Earth!

He was still far from strong enough!!

"By the way, Son Gohan, what did you mean by 'grandma drilling into a quilt' before you used the King Kai Fist just now??" King Kai asked curiously.

This was because Son Gohan had said that phrase when he was being arrogant, after saying that even if Son Gohan used the King Kai Fist, he wouldn't be able to do anything to him!

"Heh... that made me laugh!!" Son Gohan said dismissively.

"'Grandma drilling into a quilt,' that made you laugh??" King Kai was stunned and his face instantly turned red.

Amidst his embarrassment, he then uncontrollably burst into laughter: "Haha, I'm dying of laughter! I didn't expect you to tell dad jokes!! Hahaha!!"

Son Gohan shook his head helplessly. He didn't understand why King Kai's sense of humor was so low!!