S5E1 : Unchanging Form

Natsume continues to spend his days giving youkai back their names from the Book of Friends. One day, as he's heading home, he finds himself chased by a giant, rolling pot. The youkai in the pot insists that his grandmother Reiko stole a doll from her. When she threatens to hurt his family, however, he's forced to go out and find it. But would his kind, smiling grandmother Reiko really steal a doll from someone?