One of my favorite stories is called Magical Girl Policy. It's about a group of college students who use special powers to fight off evil in their town. There's obviously quite a bit more to the story, including interactions and struggles with various types of relationships, but I don't want to give anything away and it is best to simply read it for yourself. Try chapter 1 and see what you think! Please and thanks. It's an online story - here is the link - just copy and paste the link into a new window.
http://taralynn.sincomics.com/frontpage/
http://taralynn.sincomics.com/frontpage/?page_id=16