Maybe heyfreemagic will interest you? Here's the premise, with links to other pertinent information. Essentially your character is transplanted into the city of Freesia and is given magical powers with which they can fight shadow monsters. (Though they're free to completely disregard that and go do other things if they're not the combative type.)

We're definitely pretty new/small at the moment, although I'm afraid we don't have much in the line of castmates for you.