Having nearly just been killed in the spar, Olibu looked at the 16 year old monk who had collapsed in the floor.
'To think someone much younger than me has already reached my level! If he hadn't restrained himself at the final moment his Ki attack would've killed me!' walking over to the collapsed Krillin, Olibu offered him a hand up.
"It looks like your the winner Krillin, thank you for stopping your attack and for teaching me how to use Ki."
"Nonsense, I owe you a lot for teaching me your training method. Your skill and strength truly lives up to the legends and I am happy to have sparred with you!" Krillin said accepting Olibu's hand.
Besides learning the proper way to increase his physical strength, Olibu had also inadvertently taught Krillin that he had a hidden desire to win!
"I will use what you taught me to defeat the cult of Debura and prevent them from summoning that demon to earth. This'll be goodbye for now Krillin, I hope to see you again some day" Saying this, both fight gave each other a nod of understand before they began to walk away.
Krillin felt more comfortable inside his speed shoes and he now learnt the most optimum training method to grow the bodies strength.
Getting far enough away, Krillin looked up at the sky and shouted out. "POPO IM DONE HERE!"
As soon as he said this, another nauseating sensation overcame him and he was forced to close his eyes. It took a few minutes but eventually the feeling went away and he opened his eyes back to the room full of clocks.
Looking around Krillin didn't see anybody in the room, to he opened the door and walked out to nobody as well. Krillin began wondering around the castle until he went out the front entrance and saw three people standing their.
It was Popo, Goku, and another Goku!
Krillins mind was befuddled by this but quickly remember the scene from the anime Where Goku had to fight a clay clone of himself!
"It seems you've come back from your time with Olibu, did you learn what you needed to?"
"I did, Olibu taught me his optimum method for humans to increase their body strength. By the way, can you make a clone of me so I can fight him like Goku?"
"I could...But the clone wont be much of a challenge for you. You are far too proficient at using your Ki that a clay clone would be just a worse version of you, fight a clone only good training for simple and unrefined fighters like Goku."
"I see, tell Goku that I'm back. I'll be at the opposite end of the lookout." Saying this Krillin gave Goku one last watch before leaving
The reason he didn't stay around to watch the fight was because he had something important to do, brew the Paradise potion!
Taking out the distiller from his storage, Krillin created an illusion of a large metal bowl before throwin wood from his inventory into it and lighting it on fire with his ki. Taking out the corpse of android 9, Krillin quickly cut the arm off of it and threw it in the fire with disgust written on his face.
Krillin felt revolted at what he was doing but the recipe specifically called for the ashes of a strong creature, and the stronger the creature the better the potions affects. Android 9 was the strongest creature Krillin fought and he wouldn't let his disgust stop him from growing stronger!
Taking out a knife Krillin carefully measured out 10 cups of Paradise herb and careful cut them all so finely that it turned into a paste which he poured into a large mixing bowl.
By then the fire Krillin created from his ki had fully burnt the arm of Android 9 leaving behind only ash and cybernetic parts that he quickly stored.
Pouring Divine water into the herb paste, a single drop of Korins blood, and a pinch of ashes, Krillin mixed this weird concoction thoroughly before dumping it into the distiller.
Krillin was rather Surprised at how easy this recipe was to follow, he felt like it was harder to bake a cake than to create a magical life extending potions but he wouldn't complain.
Krillin spent the next hour watching and waiting as a white liquid dropped out of the distiller, he didn't dare be careless as this liquid was the most precious thing to him at the moment.
The very first drop of liquid immediately went into Krillin magical gourd he got from Popo, so long as he gives it time and fed the gourd Ki, the entire gourd will be filled to the brim with an age stopping potion!
After the first drop went into the gourd Krillin switched the container over to a sterilized vial, with this Krillin could simply take a drop of liquid out of the vial and into the gourd once he drank from it!
Krillin watch that with each drop of liquid it began to grow slower and slower until eventually the distiller stopped entirely and Krillin knew the process was finished.
Packing everything up Krillin went back to his room only to see a sleeping Goku curled up on his bed, Krillin was too tired to complain as he pushed Goku to the side and immediately fell asleep on his bed.
***
Sitting in a dark underground laboratory, Dr. Gero looked at the cut up and dissected trio of Pilaf, Mai, and Shu. The Dr. Could only shake his head at them and let out a sigh.
"These three will make for an alright android 10 11 and 13, but what i really need..." Turning to his computer and typing away, a news article popped up before him.
{Twin criminals Lapis and Lazule, age 18, have once again robbed another bank at gunpoint, their rampage doesn't seem to end!} Reading this headline with a bitter smile, Dr. Gero shook his head.
"Androids 17 and 18, those two twerps were nothing but failures compared to cell, but they were definitely the strongest human androids that I ever created! Without the genetic material of Frieza and piccolo, these two will have to do!" Typing away on a computer Dr Geros satellite began tracking them.
"I'll have to be careful, these two resisted my brainwashing and when I wasn't looking, took the control remote from me and killed me!" Dr Gero gritted his teeth looking at the smiling twins drive away in a car loaded with stolen cash.
"I'm not going to be careless this time, l won't idiotically leave behind a remote control for them to steal and I'll add a dead man's switch!" Typing away on his computer, Gero deployed android 4 and 5 to kidnap them.
These two older androids had become obsolete due to him constant creating stronger and better android, but compared to the untrained human Lapis and Lazule they were unstoppable!
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I tried to find the exact ages of android 17 and 18 but they weren't officially stated, so i figured that since android significantly stopped aging once they become androids, it doesn't really matter when I introduce them since they age weirdly.