I'm looking for an anime, all i can remember is what happens in the anime and what its about.?

In the first episode a young monk is being chased by a huge demon skull and he eventually exorcises it. Then you find out his grandpa is a famous exorcist and has one of the demons that serve him watch over his grandson who isn't really good at exorcising demons. The demon that protects the grandson can control fire. If this doesn't help then i'll try to provide more info if i remember any.