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.
So, what's this "power" you mentioned?
Also, was ist diese Fähigkeit,
von der du geredet hast?
¿Y bien? ¿Cuál sería ese 
"poder" que mencionaste?
¿Cuál es ese "poder" que mencionaste antes?
Alors, tu voulais me parler
de ton pouvoir ?
Allora, cos'è il "potere" di cui parlavi?
Então, o que é esse 
"poder" de que você falou?
Итак, о какой способности ты говорила?