(This review is for all the seasons of Natsume Yuujinchou ) NO SPOILERS
Story(7) There is a little plot which is exploited(Natsume is the grand-son of Reiko, a woman who can see ayakashi) but there isn't a real evolution of the story. You should watch this anime without thinking of shackle the episodes but watching one episode from time to time .
Art(8) Watch it absolutely in HD or you will be disappointed: the art is really simple and refined, the line is clean and the colors beautiful. If you watch it in SD, these details won't be noticed and you will find it not interesting.
Sound(9) The OST is touching, very adapted to the scenes and always pleasant to hear.
Character(8) The double personality of Madara is really fun, the past of the Natsumes(Takashi and Reiko) is moving. However, I think that some of the characters aren't pushed on enough
Enjoyment and Overall(9) With all the elements, Natsume Yuujinchou give an other point the view of life and , for my part, this anime changed my vision of my daily life. You have to watch it!