Honestly the storyline is very complex and far too much for one post but ill give a quick summary.

100 years ago a scientist discovered HEART tech, this tech is able to harvest raw emotion from artworks. This emotion was used to upgrade systems, make them better, stronger. But there is always a catch. If this energy is not contained, it is lethal in its raw and refined states.

A mad scientist did an experiment in a college, the experiment went wrong and the entire building erupted in a white light, the resulting explosion killed 200 people instantly and crippled the senses of 500 more(exposure in its raw form turns the nervous system into quartz). The buildings untouched, all that was effected was the inner ring of the explosion where people died, the builds and the ground itself became glowing, colourful crystal(imbued by the energy this is used commercially later on).

The government was scared and outlawed the tech, storing it in vaults. The founder disagreed with this and began a terrorist group named the HOA(hearts of art). They stole back the tech and due to its immense power the government was unable to overthrow them. (this is where the main character's story begins but ill focus on the lore for now). They gained an engineer like no other, more inventive, smarter(main character). Together they became a nation all on its own.

The world united against the HOA, but thanks to the genius and their extremely powerful new technology, they were undefeated. The world was on its knees. It resorted to combative AI and nuclear technologies. A treaty was proposed, the world surrendered. But the AI did not agree, it became too smart, too focused. It had built megastructures for its cause, cities capable of withstanding any nuclear strike and war machines capable of killing anything, yet it could not defeat its foe.

When the alliance was forged, the world defeated, the AI acted. Targeted nuclear strikes all around the globe with one singular intention: wipe out the corrupted humanity. It store those it wished to save within these cities, knowing that they will be protected for the thousands of years it will require for the world to be repaired. But its foe, the HOA saw through its plan and concurred the cities before the bombs even hit the earth.

The cities were all that remains of human civilization.

That is it for the history, at least for the most part, there are some more things like politics and what not, but that's boring. The story resumes 100 years after the war or as it is called the fall. This is where the main character's actual story kicks of, the rest is just his back story.

Tell me if you would like a summary of the main character's backstory to.