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)

Recap of the first twelve episodes of Ensemble Stars!

When swords were outlawed in the eleventh year of the Meiji Era, the mighty samurai population began to dwindle. Those who rejected the ban on blades rebelled, causing violent unrest to erupt throughout the countryside. To combat the rise in criminal activity, an inescapable lake prison was constructed. Three young men, born of the Kumoh line, were given the duty of delivering criminals to their place of confinement—but could there be more to their mission than meets the eye? (Source: FUNimation)

During a winter walk, Natsume meets a snowman youkai who is searching for something she's lost and can't seem to recall and decides to help her despite not knowing what exactly she's looking for.