Tale of the God-slayer Episode 13

The connection between Athena and the mysterious figure is revealed along with the figure's identity. Godou rushes off with Athena while the others stay behind to try to buy enough time for the Authorities Godou used up battling Ama no Murakumo to recharge. Fortunately, thanks to Godou, Erica has an ace that'll let her fight almost at the level of a Campione. If Godou can't defeat his new opponent, then Princess Alice's prediction of the world enveloped by the Starless Night (which was mistakenly attributed to Athena) will come to pass. He'll need the help of all five girls to achieve victory.