Natsume's Book of Friends Season 4

Name: Natsume's Book of Friends Season 4
Genre: Animation, Fantasy, Comedy, Drama, Horror
Released: 2012
Rating: 9.5
Cast: Hiroshi Kamiya, Kazuhiko Inoue, Sanae Kobayashi, Akira Ishida, Kanehira Yamamoto

Natsume encounters some strange, monkey-mask wearing demons while out in a forest. They want the book of friends, and start physically threatening him until Natsume is saved by Nyanko-Sensei.