Starinexus, a country with the most advanced technology in the entire world for whole 3 centuries, but also one of the healthiest country because The former and the one who revolutionize that Era or The President himself was the green activist, his intelligent and his smarmy talk could convince the elite global to give him the capital and the resources to built the Starinexus into Ecological country where advanced technology fused with nature, green enough that the waste of that country almost reach only 3 ton of waste each year.
But. Behind Starinexus Neon light, behind the light that make the night surrender, the faith had collapsed, people started to forgot the creator, they were used to be faithful people, praying at their god that they belief with a desperate hope that tomorrow will be better, are now decreased, they got too comfortable, thinking that technology is everything, make the faith they used to beg for, now being forgotten.
Action had consequences but now it was silent, they didn't know what kind of consequences they were about to faces. Demon named Shayatin, a being from hell that once swore to the creator himself that he will mislead Adam whole generation as his revenge for getting cast out from Heaven, the demons he created are slowly but steadily mislead Adam's generations from each century but it always led to fall, because how strong the faith that humanity used to have, but now after the technology starting to improve to the point even cancer could be healed in 2 days.
Technology become so advanced the humans themselves forgot their creator, weakening both personal and global faith. No one knows, that the world itself had a barrier that preventing beings from different dimension to enter it, it was powered by Faith, a barrier of golden light protecting the world against Shayatin influence to mislead humanity, but alas, the Weakened faith making the barrier become thinner and thinner, making demons could enter the world, slowly mislead humans to their goal, total control towards world behind the curtain.
Until the hope just rise out of nowhere, they were called The Exorcists a job that used to be popular in the Victorian era, now fused by technology, Exorcized demon that already enter Humans mind, absorbing them into neutral energy and use the demon own energy against the demon many people call it Magic, Ki, Holy Energy and others, but the officials call it Ardent
There are The Ruiner that use Demon energy that mixed with their Sins
The Eden that use their virtues and The Scholar thar use Discovery or Knowledge