Ki no Ue no Youkai

A Youkai that resides on a tree, located in a path that Natsume used to take when he is walking to school or walking back home back when he was in elementary school. Whenever Natsume comes near the tree, she always suddenly comes off the tree and scare Natsume, he finds it very irritating, but as herself, personally finds it very amusing. The Youkai is always seen by herself, and shows dislike to humans, often calling them rude, selfish and complicated beings. She is always seen attempting to scare people who walk pass the tree, but none can see her, in result. She gets mad occasionally if someone does any harm to the tree, she would do her best to chase them off.

She is also able to transform in to a black and white cat, which humans can see.