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

Natsume takes care of an abandoned egg from a nest, not considering it could be a Youkai. After it hatches, it turns out it is a rare baby spirit called Tatsumi, who thinks that Natsume is its parent. Natsume can't help but get attached to the little spirit even as Tatsumi grows tired and sick. But as Natsume takes care of Tatsumi, a mysterious spirit comes and wants to take away Tatsumi for his master-who wants to eat him.

(Source: Wikipedia)

From the day where a picture of a row of cherry trees in a desolate winter was obtained, every time Natsume wakes up, his room is covered in petals. Trying to solve the root of this activity, Natsume and Nyanko Sensei try to return the picture to Miya, a shadow figure who accompanies the picture. But why can't they return it to Miya?

(Source: Wikipedia)

While out with Touko-san, Natsume spots a hurt youkai. Quickly he chases after it but as he goes to help it, it is eaten by a much bigger youkai. Natori and Hiiragi appear right after the youkai escapes and they invite Natsume to the Assembly of Conjurers. Here Natsume can not distinguish between human and youkai and is hopeful of finding people who understand him. Though this may be what Natsume has always wanted; he is too soft-heartened to realize everyone's intent.

(Source: Wikipedia)