The universe consists of two known planes of existence. The Demon plane and the Mortal plane. The Demon plane is the home to seven races of demons, while the Mortal plane is home to the Human race and their bizarre mutations and magical skills.
The Mortal plane is a plane where countless humans live in densely populated cities. The complete opposite to the sparse populations of the Demon plane. Just as much as the Demons have powers, there are some mortals who have powers too. Mutations that create powerful Humans called Vigors as well as magic users who can cast spells or traverse the two planes.
The Demon plane is ruled over by seven Demon lords and a king, while the other, less powerful demons fall into line behind these Demon lords. These Demon lords grant powers to their subjects, creating the seven demon races. All Demons can move between the two planes, but most choose not to due to their hatred of the Human race, but some do for a single thing. To have children, for Demons can only be male. At least- they should.
Elmira is the first female demon and due to her unique circumstance and the demon's hatred of Humans, they wish to make her their queen with which they can have 'pure' children with. Elmira and her brother, Lucifer have other ideas. As a plan hidden from her other brothers and Satan, her Father, Lucifer sends her off to the Mortal plane in an effort to hide her amongst the Humans. However, it takes time to get used to the Mortal plane and the people within who have their own ideas as to what she should do.
Warning: Tagged 17+ for gore, strong language and violence.