The Supernatural Studies Club meets Miyamura's sister, Leona, in their search for the seventh witch. She has dropped out of school in order to escape from that witch's power to erase memories. The instant one learns her name, all of their memories related to witches will be erased.
On that note, Yamada, 
good luck with the rest.
Na dann, Yamada,
das packst du schon.
Dicho esto, Yamada, buena 
suerte con el resto.
Pues nada, Yamada. 
Buena suerte con el resto.
Courage, Yamada.
Detto questo, Yamada, buona fortuna.
Bom, Yamada. Boa sorte.
В общем, Ямада, удачи тебе с ней.