A/n: Another weird original idea that appear in my head after re watching some God eater, and other kaiju stuff, so well here we go!

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Fifty years ago in the year of 2030 a group scientists found a piece of material with new element that was not recorded in any periodic tables found in it

And as history always is Human try to research anything they can about it, how to use it?, what exactly is it?, can it be used for the advancement of humanity, science, and step closer to God

But one day an accident happened, during one experiment,  the material that is experimented on... Evolved? Mutation? No one exactly know but from it born a monster

A monster that was capable of something very bad, it was able to control elements in air the Oxygen, the monster itself was able to release highly concentrated oxygen, which slowly change the ecosystem into having highly concentrated oxygen all the time

The monster was recorded as the very first monster, or what scientists called Chemic

Plants life starts to died off, large animals died due too much oxygen, while the smaller animal thrive, insects grown bigger

And Human also start to die as well, but as always Human always finds a way to survive just like a cockroach

They start selling the diluted oxygen to people, and from there hierarchy is also born where the rich get the proper one, while the poor get the cheap one, and some would even try to get high with the highly concentrated oxygen

But oxygen, and the large insects was not the only trouble, from the very first Chemic, more and more Chemic appears each one being able to control an element in the periodic table

And the Chemic are differentiate with class:

Class F (Basic): Can use only 1 element/compound (usually stable & simple, Oxygen, Iron, Sulfur).

Class E: Can combine 2 elements making reactions (Hydrogen + Oxygen = steam explosion).

Class D: Can combine 3 elements more versatile.

Class C: Mastery of entire families/groups (Halogens, Noble Gases, Alkali Metals).

Class B: Command of unstable or radioactive elements (Uranium, Plutonium, Radon).

Class A: Can manipulate synthetic/rare compounds (superacids, plastics, or even nerve agents).

Class S (Catastrophic): Can use multiple groups and bend reactions at will, becoming living apocalypses.

And the very first Chemic are put in the class S+, just cause it was the verey first one

And there there is group of people or the Chamic defense force, a group of people who is in charge of defeating the Chemic that get too close to the fort/wall, and also the people who would go outside the wall that humanity create to stop incoming Chemic

And then here our Main character would be a scientist, And enginer? Who is in charge of creating weapons, and in charge of trying to find out what kind of elements the Chemic can control

Each group in the defense force would have a scientists in charge of anylising the Chemic, giving warning, and telling the soldiers what can they do and not likr making a bad chemical reactions

The defense force soldiers also gifted a special equipment and gears, which can compound as well like making steam blast or something but only high rank would have type that can use super acid, nerve stuff

And there would also be weapons created from using parts of high class Chemic

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A/n: so what do you think? I was planning to make the mc a scientists, with the fl one of the soldiers supposedly one of the best

And kind of think like defense force would have a specialized equipment that can mix compunds as well to counter the chemic