 If you liked
Ao no Exorcist
|
 ...then you might like
Kill la Kill
|
Both deal with a protagonist with a common goal of defeating a central authority figure of evil. Both protagonists have a trait that sets them apart from the rest of the human population. KLK and ANE both take place in a school setting with a powerful authority figure acting as the puppetmaster of the school. Authority figures are also related to the Big Bad.
Protagonists are defiant and stubborn, and want to make their own path and find their own way. Both also possess large amounts of power that they use to bring them closer to their goal.