Natsume meets the very first Yokai whose name was written in the Book of Friends.

Natsume is visited by the village's local god who is currently fading because of the lack of devotees.

Natsume goes to a dam and finds a town that had been submerged in water. Just then, Natsume gets possessed by a yokai and falls unconscious.

Natsume, Natori and Matoba work to complete the ritual to welcome a powerful god.

Natsume takes in a strange origami doll that shows wonderful dreams.

While outside during school Natsume is hit with a ball while reading. He goes to retrieve the ball and ends up breaking a Youkai's seal (much like he had with Nyanko-sensei). Later that night Natsume and Nyanko-sensei discover a look-a-like of Nyanko, only to have him steal the Book Of Friends!

Natsume discovers that the heirloom "Book of Friends" that his grandmother, Reiko, gave him possesses the names of the spirits she defeated and bound to her will. Assisted by a cat whom Natsume addresses as Nyanko-Sensei (lit. Master Little Meow), Natsume aims to return all of the names to their rightful owners.

Natsume is implored to help spirits who are currently being exorcised. He finds a kindred spirit in Tanuma, a boy who also senses spirits although not as powerful as Natsume.

Tanuma gives Natsume some clay, and he tries his hand at sculpting a figure. However, the next day, the figure has disappeared, and other strange things are happening in the house. Is a Yōkai causing mischief in the house? Or is it just a rat?

Natsume is forced to help rebuild a tiny house that's a residence for a goddess.

Natsume and Kitamoto are victims of a horrid curse.

Natsume is caught up in a mysterious game between youkai and man.

Natsume finds himself in a house with a strange ritual, and unknown forces moving against those who would perform it.

Taki's brother suddenly comes home from college, and has something very important on his mind...

Chobi is depressed because his favorite comb broke. Meanwhile, Natsume sees a white dragon in the sky...

Natsume meets Matoba in an unusual place. Matoba hunts for a dangerous yokai at an abandoned mansion.

Nishimura finds Natsume coming to visit him each night at his house, but something seems strange...

Touko and Shigeru are the kind elderly couple who took in Natsume when no one else would. But what were they like before they let Natsume move in?

Natsume helps a youkai out of a pot, and as a "reward", is made young again. But Natsume is already young, and making him younger just confuses him and addles his memories. When he doesn't know who to trust, will he have the strength to know who his real friends are?

Natsume meets a spirit who used to be friends with a man who could also see spirits, but one day lost this ability.

Tanuma finds out Nyanko-Sensei is a spirit. Tanuma and Natsume enjoy the autumn festival and previous acquaintances are seen again.

Midterms are over, and Natsume leaves on a trip with Nishimura, Kitamoto, and Sasada. He realizes that the scenery he's viewing from the train is from one of the places he grew up in, when he was passed around from one family to the next. He'd thought he didn't have any good memories of the time, but then he remembers what happened when he lived there...

Natsume's secret is found out by Sasada, the class president, during the "Trial of Courage." She asks for his help to find the spirit that lives in the abandoned school. Natsume denies the fact that he can see anything, but she won't take no for an answer. Meanwhile, the spirit, Shigure, captures the rest of their school mates, in fury of the school being torn down...

Natsume goes to a hot spring for a school trip, with an errand from Shigeru to pick up teacups from a near by pottery. While there he meets and helps a little fox spirit, who quickly grows attached to him.

Natsume comes across an old ticket in Reiko's belongings and decides to go to the abandoned train station to see why she kept it. There, he meets a slow witted spirit named Santo, who was waiting for Reiko the entire time to go Kiriganuma, to see and make up with his friend, Mikuri, but the trip isn't as easy as it first seems...