6x4 - Natsume's Book of Friends

Natsume watches a movie starring Natori, and when he's done he finds one of Natori's paper dolls. The doll is soaked and the text on it is impossible to read, and Natsume becomes concerned for Natori's safety. He travels to the location that's just barely legible on the doll, and finds a young woman whose home is haunted by not one, but three youkai.