The third season of Natsume Yuujinchou.

Takashi Natsume has always been shunned by those around him because of his mysterious ability to see yokai. Eventually, he came into possession of his grandmother Reiko’s “Book of Friends,” and together with his bodyguard Nyanko-sensei he set out to return the names of the yokai contained within it. Since then, he’s found a home with the Fujiwaras and surrounded himself with friends at school. Little does he know he's about to be dragged unwittingly into further trouble...

(Source: NIS America)