Natsume finds a black cat looks very much alike of Nyanko-sensei except fur c...
Natsume's Book of Friends
Season 2 Episode 6: Shôjo no jin
Natsume saw a teenage girl who draws something on the ground. Though he speaks, she runs away without saying anything. Next morning, a spirit who grew small mustache asks Natsume to stop that a human girl draws some ominous magic circles.