Blue Exorcist

Two identical twin brothers, one is a trouble maker with no plans to continue his education pass junior high; the other has a scholarship to a famous boarding school. One wishes to become a doctor and help people while the other is a demon. No really, and not just any kind of demon but the spawn of Satan himself and unfortunately for Rin, daddy is more interested in setting up room and board inside his body than taking him out for some father/son bonding time.

What makes things worst though is that the same day Rin learns all of this his last living guardian dies protecting him and now he and his brother Yukio only have each other. And Yukio has a secret of his own that is just another big shock in Rin's life.

Like all good shounen Blue Exorcist has a good balance of light humor and intense action sequences not to mention a protagonist with a goal to become something greater than who he is. In Naruto its to be Hokage, in One Piece its to be Pirate King and in Blue Exorcist its to become a strong exorcist so that no one will ever have to die trying to protect him again. This isn't going to be easy though because Rin isn't the sit down and study type and being a demon himself he has to keep what he is a secret along with hiding a tail and pointy ears.

A good start to what looks like is going to be a promising series if it continues with the world building and building on the relationship between Rin and Yukio.