Oddity: No Good Deed

16-year-old Additi Niwa has made a deal with a demon. In order to save someone she loved, she traded half her soul for the powers to heal and to harm. Every time she harms someone, she'll get a piece of her soul back, and every time she heals someone, another piece will go to the demon. So, she does what any teenager with newfound superpowers would do. She becomes a superhero! Because if she's only hurting bad people to get her soul back, then she's not really doing anything wrong... Right?