Krillin and Goku flow through the sky at 400mphs, the android hot on their tail and the only thing slowing him down was the illusions that Krillin constantly made to throw him off.
He was telling Goku where to fly while simultaneously creating flying nimbus illusions that split off into different directions causing the android to chase after them.
The ocean water beneath them was sent flying from the air pressure the nimbus created. With each illusion the android got better at identifying the real ones, this would've terrified Krillin if he hadn't felt that he was closing in on the forest of terror.
This chase continued on for 5 minutes until they saw a small island out in the middle of the sea, from this point Krillin stopped creating illusions and focused entirely on navigating.
"Goku listen up, on this island is a magical forest and the way to get in it is by entering the mouth of a large statue! I'll lead us their but remember this Goku, suppress your ki to the very minimum if you want to survive!"
Goku nodded at Krillins advice, not doubting his friend for a second and immediately began suppressing his Ki. This action took insane trust on Gokusbpart as purposely lowering your strenth was suicidal to do mid battle against an opponent!
With the knowledge his system gave him on the location of the Paradise herb, Krillin guided them directly into the forest of terror where the herb was located.
Passing by a certain threshold, tiny red ribbon army soldiers suddenly sprang forth from the ground and began following the gopden Nimbus.
The forest of terror creates illusions of the trespassers' past opponents and people they fear, these illusions are as solid as Annins illusions!
The illusions in the forest will grow larger if the trespassers use ki in any way, so the forest creates terrifying illusions to make its tresspasser afraid and make them accidentally use too much Ki.
As the illusions are created from the trespassers' memories and fears, the illusions are inherently menacing and may even possess abilities the originals lack!
"Remember Goku, don't use any Ki whatsoever!" Due to Krillins Ki control he was able to prevent any of his past opponents or fears from coming forth and creating illusion opponents but Goku couldn't yet.
While he could diminish it greatly, Goku still couldn't fully suppress his ki resulted in tiny Red Ribbon enemies and Mercenary Tao"s to appear. Due to their size and power the RR illusions couldnt reach the nimbus, everything was going fine when suddenly Goku had to make a sharp right turn as an incredibly large bald head sprung up from the floor!
"Krillin, it's you!" Flying past the giant illusion Krillin face, the real Krillin couldn't help but feel nervous at the Power it exuded.
"The android has entered the forest Goku! We just need to avoid the illusions it creates and let it fight them!"
In the dragon ball super anime, even a super Saiyan 3 Goku couldn't brute force his way through this forest. Instead he and Krillin had to learn to eliminate all emotions and fight with 100% Ki efficiency, gaining both of them the 'selfless state technique.'
Of course the current Krillin and Goku didn't have the skills to attempt fighting with 100% Ki efficiency, they could only suppress their Ki and let the forest take care of the android.
Krillin and Goku watched from above as dozens of Krillins and Goku's began converging on the cyborg monk, the mindless android was confusing the giant illusions for the actual Goku and Krillins and actively attacked them!
With them being illusions android 9 had no problem slaughtering the giants, the only problem was that for every one you killed two sprung up from the ground and grew slightly larger!
Having goku fly as high as he could in this forest, Krillin used as little Ki as possible to cast an Illusion on the nimbus to make it appear invisible. Of couse his Ki use caused small Illusions of Annin and Bacterian to appear, but that only added to the burdens Android 9 had to fight.
It took over 5 hours as Goku and Krillin watched the android constantly going at the illusions, it was slowly accumulating small injuries across its body. The android had unlimited Ki so it never lost its stamina, but its unlimited Ki was actually its downfall!
With it constantly pouring out Ki the illusions grew stronger and stronger allowing them to land attacks on the android. As time went on Android 9 got more and more injured as the illusions grew stronger and stronger.
It eventually reaches a point where hundreds of Krillins and Goku swarmed the heavily injured android, Krillin only realized the android had been killed when the illusions faded out of existence and his system buzzed.
[Ding, Android 9 had been killed. Emergency mission complete.
Mission reward: Time Freeze (weak), Yemma fruit, three knowledge tickets]
Suddenly memories of how to stop time entered Krillins mind and he became a little disappointed. The technique was as it proclaimed, he could stop time but the restrictions on it was incredibly restraining!
Firstly the technique required constant focus so even the slightest distraction would deactivate it, meaning that it'd be impossible to use a Ki blast while time stopped.
Secondly when time is stopped, it truly is stopped, meaning that every single person goes into a frozen state that can't change whatsoever and everything basically becomes indestructible.
If Krillin froze time and unleashed a barrage of punches towards a frozen opponent, they wouldn't feel a thing once unfrozen but Krillin would feel like he just punched an indestructible wall.
Thirdly the cost of it increase the longer you use it, meaning the first second was relatively Ki inexpensive but the fifth second would expend a large amount of Ki every millisecond! He also couldn't just rapidly use the one second time stop, the ability goes into a five minute cool down upon use.
Lastly he could drag anyone into his time freeze with him allowing them to move in time freeze, but it costed three times as much Ki per person he brought with him!
Besides these restrictions the one major upside was that if another person was to stop time in his vicinity, his ability would automatically activate and allow him to move freely in their time stop.
'With all of these limits place on this time freeze, it might as well be a movement technique as thats the only thing I can use it for! That being said, Yemma fruit is incredibly powerful, who ever eats the fruit immediately doubles their Ki and physical strength permanently! It'll be a waste to eat it now since the affects can only be used once, Ill save it for later.'
Krillin wouldnt complain over being given supernatural abilities, having a time stop ability that only allows him to run away is definitely better than having nothing.
"Goku can you stay up here, I'll take care of the RR army illusions and retrieve the body." Despite saying this Krillin had a different goal in mind.
Using just his physical might and martial arts, Krillin tore through the weak Army surprisingly easy. He'd already obtained the android body but his new goal was probably more important for his future growth than his time stop ability!
Defeating dozens of General reds and blues, Krillin killed the very last illusions that the forest created of Goku and felt the unconscious pull in his mind grow stronger.
Following the directions his system gave him, Krillin found the most vital ingredient needed to grow stronger, the Paradise Herb!