Sehaga, socugjó suru n da tte jo (E12)

The girls get the medals they need to graduate, but a new enemy, "Black Asobin" appears. He steals their medals, and invites them to "Black Asobin World" to get them back. They make their way to his tower there, and find themselves in the Virtua Fighting ring, where they encounter a familiar face. (Crunchyroll)