'Aafia is it an essence?' Anik asked while looking around for any enemy or zombie.

[Yes, it is an essence.]

He just smiled and said.

'Infinity'

[Water bottle (1 Liters)]∞)
[canned food (425 grams)]∞
[Kitchen knife(20 cm)]∞
[Glock 19(15+1)]∞
[Grenade (unpinned)]∞
[Gladiator XMT (fully fuelled)]∞
[Full portable tank(diesel)]∞
[M4(fully loaded)]∞
[Essence]∞[]∞

'Now, I only have one left to fill up. Aafia how do I consume this essence.' Anik asked Aafia.

[You can eat it one at a time at an interval of 1 hour.]

'Why is that?' Anik said while clearing all the normal zombies.

[When an essence slowly changes your body structure or you can say improves it. Usually, it takes 1 hour to complete the change. And if you take too many essences at a time your body might not be able to handle the change. So don't be hasty.]

'What gonna happen after I immediately eat an essence right now.' Anik asked Aafia.

[You will just feel warm around your body and your body will feel light for an hour. Then it will be back to normal or new normal.]

'How strong will I be?' Anik asked Aafia.

[You will be as strong as four average male humans.]

'That strong!!' Anik was shocked to hear that.

'Then, does that mean I am gonna be as strong as 80 average male humans after consuming 20 essences.' Anik asked while looking around to see if there was any enemy around and entered an abandoned after at first he checked the rooms to look for any zombies or humans and after not finding anything, he finally sat down on the floor.

[No, you will be as strong as 50 average male humans because it slowly gonna lose its effect as much you take]

'Summon'

Anik summons an essence and eats it after hearing that with a little frustration.
After eating it he did feel warm all over his body and all his fatigue was gone.

'Aafia, you didn't tell me it removes fatigue also.'Anik asked with happiness.

[Of course, if it can heal wounds then it can easily remove fatigue also. And there is new information available for you. Do I tell you?]

'Of course, Do you even need to ask? Tell me.' Anik asked while leaning on the wall. Even if the essence removed fatigue it only can remove physical fatigue not mental.

[You have to kill ten thousand to get the next level up for your skill.]

"What???"
'what do you mean I have to kill 10 thousand zombies to next the next upgrade? What happened to the monthly upgrade?' Anik asked with a shocked face.

[Because it's more fun.]

'Huh!!'

'What do you mean more fun?'

'Hey, you tell me now.' Anik asked frustrated.

[....]

30 MINUTES LATER

[....]

'Fine, you don't need to tell me.' Anik said to Aafia after she went silent for a whole 30 minutes.

[Yea!!!]

*Sigh*
'Da*mit, I am a puppet to someone higher.' Anik said to himself in anger.

[Anik, you should be happy, not sad to be something to the higher one.]

*Sighhhhhhhhhhhhhhh*

'Whatever, I don't have time or strength to think about that stuff. Is there any other information you have to tell me?' Anik asked Aafia.

[Yes, of course I am. It's about the new power scaling.]

'What power scaling. There are only zombies who need that.' Anik questions Aafia.

[Well, there are only zombies now, there will be a variety of them but not many.]

'What?? Just say it straight all the information you have, don't tell me bit by bit.' Anik said with anger.

[Ok, there are many powerful beings in the universe or universes. All these beings are classified into different tier levels according to their strengths.]

'How many tiers are there then?' Anik asked with curiosity.

[The tier starts from the H-tier level to the SSS+ tier level. Each tier has three sub-level in them.For example:-F-(low), F(medium),F+(high). Universe also has tier levels. Your home universe is the H-tier level universe. And this universe is the F-tier level universe.]

'What's the difference between H and G-tier than?' Anik asked.

[The difference is just the level of strong being the universe can produce itself in it.]

'So, does that mean H-tier level beings are normal people and G-tier beings are like that mutant zombie.' Anik asked Aafia.

[Yes, but the difference in strength gets bigger as you move up in the tiers. If you consume all 20 essences, you will only go up to F-tier being a strength.]

'Well, that's a huge jump in level isn't it?' Anik asked Aafia.

[Yes, because you were already at H+tier level strength due to your training and combat experience.The universe tier level also factors in helping the being to go up the tier.]

'How?'

[Well, The less you are from the highest tier level, the easier will be to level up to the higher tier. It only affects the higher universe whose tiers are higher than or equal to the F-tier. You don't need to worry about that just yet.

And nobody has any chance to eat 20 essences in one go like you. So it will be easy for you to level up to the F-tier.]

'I understand. So the next mutant to come will be as strong as me or F-tier level.'

[Yes]

'Then, what do I do after consuming that mutant essence also? And be the highest tier being in this universe.'

[Don't be so overconfident after defeating just a G-tier being. You may gain strength as equal to them but they have special abilities that you don't have and normal ammunition doesn't work even a little bit.]

'Well, we will see whose abilities gonna win over others.' Anik said with a smile.

'Now, give me the answer to the last question?' Anime asked Aafia again.

[You will be thrown out of this universe if you reach above the tier level of this universe.]

'What?? Why??'

[Because universes can't hold higher tier being that itself otherwise the high tier being will destroy that universe.]

'Then, where I will go?' Anik asked Aafia.

[Again, I said don't be overconfident to beat that F-tier zombie. Even I don't know what will happen to you but most probably you will go to the higher universe.]

'How many F-tier zombies will appear after one month then?' Anik asked Aafia.

[Just one.]

'Why???'

[Because it's the highest tier in this universe and all universes can only produce one highest tier being itself every 1000 years.]

'Then, does that mean I am an anomaly here?' Anik asked Aafia.

[Yes]
                                To be continued...