It is mostly episodic like Mushi-shi and Hell Girl but the story is more that of XxxHolic. This is definetly one of my new favorite shows.
The main character Natsume Takeshi is able to see spirits and inherited the "Book of Friends" from his grandmother. This book is filled with contracts, manifested as names, she made with spirits to basically be her servants. Some of the spirits just want their names back but others wish to steal the Book of friends from him so they can control those spirits with names inside.
Watch it, it's amazing!
