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.
Why did you keep something 
so important from us?
Warum hast du uns so was
Wichtiges verschwiegen?
¿Por qué ocultaste algo tan importante?
¿Por qué habías ocultado algo tan importante?
Pourquoi avoir caché
une info pareille ?
Perché non ci hai detto
 una cosa così importante?
Por que manter algo tão 
importante em segredo?
Почему ты молчал об этом?