Seeing that all his attacks were blocked by John without inflicting any harm, King Piccolo took a few steps back in fear. He looked at John, realizing that this human seemed more like the true demon king, while he, the real demon king, felt like a pitiful little sheep.
However, he quickly recognized his psychological state; as the number one King Piccolo, he was ashamed to be afraid of a human. He shouted angrily, "You bastard! I will kill you!"
After that, King Piccolo roared, his aura suddenly surging as he clasped his hands together with a cold smile. "Die! I want all of you to die with me!"
Sensing the violent energy emanating from King Piccolo, John immediately warned everyone, "Be careful! King Piccolo is about to self-destruct!"
At the same time, John assumed the Kamehameha stance, gathering a massive amount of energy in his hands before pushing it forward. A powerful energy wave surged towards King Piccolo amidst the chaotic energy.
At this moment, King Piccolo had not finished gathering his energy. As he saw the approaching Kamehameha wave, he felt an intense sense of death looming over him.
Realizing that if he did not evade, he would likely be killed, King Piccolo immediately stopped gathering energy and jumped upward to avoid John's attack.
The powerful Kamehameha wave brushed past King Piccolo's feet and struck a distant island in the sea, resulting in a tremendous explosion.
King Piccolo turned to look at the explosive wave rising into the sky and was filled with dread. He understood that if he had not dodged just now, he would have faced certain death under that energy wave.
King Piccolo realized his current situation: he could not defeat this person named John. If things continued like this, he would be killed. Therefore, the best course of action was to escape immediately and gather the Dragon Balls mentioned by that human to wish for his youth back. He believed that if he returned to his youthful state, he could surely eliminate this threat.
With this thought in mind, King Piccolo turned to fly towards the spacecraft above.
But at that moment, a circular beam of light suddenly flew toward him. Without any warning, it sliced him cleanly in half.
It was John who had fired a Ki Blade after noticing that King Piccolo had evaded his Kamehameha wave.
King Piccolo was so terrified by John's strength that he was lost in thought about his future and failed to notice John's attack until it was too late to dodge.
Thus, the grand entrance of King Piccolo brought no harm to Earth before he was swiftly defeated by John and cut into two pieces by a Ki Blade.
"Damn it! Am I really going to die like this? I refuse to accept it!" King Piccolo's mind screamed in agony.
His upper body began gathering energy again as an egg formed in his mouth. He concentrated all his life force and energy into this egg and finally spat it out towards the distance with great effort.
King Piccolo looked at this egg filled with hope and said, "Son, you must train hard and avenge your father by killing all humans!"
After saying this, King Piccolo exhausted all his energy and exploded into ashes in mid-air.
John stood on the ground and breathed a sigh of relief upon seeing that King Piccolo had indeed laid an egg. At least this way, King Piccolo wasn't foolish enough to die without leaving behind a successor; otherwise, even God would perish with him, preventing many future plot developments.
Everyone was overjoyed to see the once-mighty King Piccolo defeated by John. Master Roshi felt particularly happy since he had experienced firsthand the terror of King Piccolo's reign over Earth years ago.
Master Roshi looked at John with gratitude and said, "John, I never expected your strength to improve so quickly; even King Piccolo has been eliminated by you."
"You accomplished what many—including myself—could not do; you saved the world."
Upon hearing Master Roshi's praise, John approached him and said, "Master, please don't say that. Why do we practice martial arts? Aside from strengthening our bodies, it's also so we can help others when we encounter injustice."
"Very good! John, I declare you have officially graduated; I can no longer teach you anything more," Master Roshi said while bowing slightly to show respect for John's martial arts accomplishments.
The others followed Master Roshi's lead and bowed respectfully towards John while calling out "Master John!"
Seeing everyone being so serious made John quickly return their gesture. Afterward, he said with a smile, "Please just call me John from now on. And Master, even though I've graduated, I'm still your disciple. I'll still come around occasionally for some advice—don't shut me out!"
John's lighthearted words eased the atmosphere around them as everyone burst into laughter.
Krillin suddenly asked Master Roshi, "Master Roshi! Can you tell us about King Piccolo? We defeated him but still know nothing about his background!"
Upon hearing Krillin's request—except for John—everyone perked up their ears to listen to Master Roshi explain who exactly King Piccolo was.
Seeing his students interested and knowing that King Piccolo had finally been defeated lifted a burden from Master Roshi's heart that had weighed on him for hundreds of years.
So Master Roshi eagerly began recounting how powerful King Piccolo once was when he ruled over the world and how he was eventually sealed away.
Thus everyone spent a joyful evening together before setting off on their respective journeys home the next day.
Master Roshi took Launch and Krillin back to Kame House while Tien Shinhan took Chaoz out for training in preparation for the next World Martial Arts Tournament three years later.
John, Bulma, Goku, and Yamcha returned to West City where Goku planned to continue training with John in Bulma's newly created gravity chamber.
However, just as John defeated King Piccolo and as King Piccolo laid an egg for his successor, Master Karin received a divine message summoning John and Goku to the Heavenly Temple.