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.
The seventh witch is special. So, fittingly, 
this will be your ultimate choice.
Die siebte Hexe ist
was Besonderes,
La séptima bruja es especial. Por ende, 
tendrás que tomar una decisión muy importante.
La séptima bruja es especial.
La 7e sorcière
est d’un tout autre niveau.
La settima strega è diversa dalle altre.
Per cui, in pratica, la scelta sta a te.
A sétima bruxa é especial. E 
ela será a sua "última escolha".
Седьмая ведьма особенная. Поэтому
это станет твоим последним решением.