Ao No Exorcist is the story of Rin Okumura, one of two twins born from a human mother and Satan as a father. Rin is a trouble maker and not particularly good at anything. However he has the urge to protect his brother and prove himself, all the while he is quite self loathing. The two brother's mother died during child birth and they were taken in by a priest. He raised them as his own children and taught them the best he could. One day Rin discovers that he is the son of Satan and loses control. The priest, being a the highest class of exorcist a Paladin, is the only one capable of withstanding being possesed by Satan and ends up losing his life as a result. Rin then swears an oath to kill his father Satan and become a Paladin himself. He joins True Cross academy and begins learning what it means to become an exorcist. Rin battle both demon and humans who want to see the son of Satan die. I find this anime very interesting and like the fact that someone took a different approach to the theological genre of anime. It is good for both entertainment and a storyline to follow.
Nurarihyon no Mago is the story of Nura Rikuo, a boy who is 1/4 yokai born of the Nura clan. The Nura clan is a clan of yokai led by Rikuo's grandfather Nurarihyon, the supreme commander of the yokai. He is also known as the Lord of Pandemonium and commands the night parade of 100 demons. Rikuo is like any other teenage boy, he wants to enjoy being human and have friends. However, his grandfathers loyal yokai don't believe he is worthy of the title third heir because Rikuo has no desire to rule the yokai. Through many trials and dangers protecting both his friends and the fact that he is a yokai, he realizes that he has the ability to transform into a most powerful yokai by night. Dealing in the amount of fear he can cast upon others he is the spitting image of his grandfather. I would recommend this to those that enjoy yokai and ayakashi lore or those that enjoy supernatural or fantasy type anime. The animation is very well done and for a shorter anime it is pretty good. The second season is currently in progress and shows even more potential. The characters are showing more development and the story line is improving. Enjoy!