The Day Betelgeuse Laughed - S1.E43

Despite a few inconveniences, like being unable to go outside when she wanted, young Emilia lived a happy life in a settlement of elves with Fortuna, whom she lovingly called “Mother.” However, their peace was threatened by the arrival of the Sin Archbishop of the Witch’s Cult representing Greed, Regulus Corneas. In the present, Shima appears before Subaru and the others as they wait outside the graveyard for Emilia to complete the trial, and she tells them of the events leading up to the birth of the Sanctuary.