Episodes 5.5 and 13.

The story follows the adventures of rabbit-shaped Jewelpet Ruby, her long-best human friend Airi Kirara and the other Jewelpets on their mission to restore the Jewel Castle, which had fallen from the skies into the middle of the town because of humanity's lack of faith in magic. To restore people's belief in magic, Jewelpets transform into humans to study more about them. (Source: ANN, edited)

Movie based on the 1996 TV anime with an original plot.

The Obake Zukan series illustrates various monsters and spirits and explains why they are scary. (Source: ANN)