Natsume's Book of Friends Season 1 Episode 12: The Five-Day Mark
Episode 12 of 13 of Natsume's Book of Friends Season 1, aired September 21, 2008, 23 minutes. Available with English subtitles and dub where released.
Episode summary
Natsume is cursed by an evil spirit which is sealed to a tree, not wanting to trouble his adopted family, he decided to run away from home.