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.
But, just between us,
Aber so unter uns beiden:
Que quede entre nosotros,
Que quede entre nosotros.
Ça reste entre nous,
Comunque, detto tra noi,
Mas só entre nós.
Но между нами,