|Rin and Yukio|
A series of events unfolds and causes Rin's powers awaken and the story goes from there.
Since I don't want to spoil to much ill sum it up like this. If you like demons, and the eternal struggle between good and evil, and don't mind a slightly religion spin on it you will most likely enjoy it.
If any of our readers have suggestions are decent series I could pick up that would be awesome.