Justice and Her League

My name is Justice, and yeah, I'm a demigod. So far as I can tell, that status isn't all that impressive. I'm supposed to have magical powers, but all I've ever done is accidentally kill my mother. The only thing I have going for me is that I'm stronger, with sharper senses, than most humans. I've managed to turn those traits into something useful: I kill bad guys for a living.
So long as I avoid those pesky human authorities (they aren't keen on vigilante justice) and don't get killed mysel...