My Demons

(I'm really bad at story descriptions, but please give this story a chance, also, I wanna thank my three awesome friends for helping me with things here, THANK YOU<3)

Scarlett Wilson and Elena Wilson, you could call them 'runaways'. They live in an abandoned manor and live by stealing money for school and food to live, they are very good at picking locks and great hackers, really good at parkour and fighting.
But, there something about them that's not normal, not normal at all. They have powers, and I don't mean just one, but many different ones, like telekinesis, telepathy, super speed, all four elements, shape shifting and more, but their strongest one is Black Magic.
They have demons they like to get rid off but they never get away. Their demons might be very annoying, but they help their owners so they don't die or something, and all this happens in a magic free city.
Or, well, they thought it was magic free, and that it was just them, but, No.