After Discussion AK and Mark Get ready for their voyage into past and before their departure Scientist Lock said "The mountain will be in different colours from different sides so it's easy to find and also be careful you are going into past so don't change anything that means no involvement with public or anyone you target is the top of 7 mix mountain go straight for it and get the material we need to fix this " after those words said by lock AK & Mark gone to past and after landing infront of 7mix mountain then mark asked AK to teleport them to the top of mountain but AK said that if he use that technique he will be out energy and become completely weak since they are unable to see the top of mountain so he rejected that idea after some discussion Mark and AK decided to climb the mountain after the reach almost clouds they feels uneasy and weaker and yet they don't stop climbing the mountain after some time they stop at a cave which was located at upper half of mountain after a while AK and Mark slept but still AK used his Technique to create Aura Guards at cave enterence using his energy . While AK sleeping he recovers his physical strength and energy while also using the energy to protect their bodies while in they in sleep so the guards becomes stronger when AK sleeps more but at early morning AK feels a strange energy from a person .
(So what is this strange energy that he feels is it threat or not find out in next chapter)