The story focuses on the background of Mash Kyrielight and Romani Archaman, and the events leading up to the Seventh Singularity, Absolute Demonic Front Babylonia. <br> <br> This episode aired on August 3, 2019 at Fate/Grand Order Fes. 2019: Chaldea Park. It was available for download on the Fate/Grand Order mobile app, from August 4, 2019 to August 11, 2019.