Those Newly Come of Age (S02E01)

One day, some time after the incident in which Edward kidnapped Emilico, the Star Bearers call out the living dolls in the middle of the night. Barbie tells them that a suspicious figure in a robe has been seen in the great hall. The first thing Barbie does is to become suspicious of Emilico, and Emilico tells Kate all about it. (Crunchyroll)