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.
Even if your memories disappear,
Selbst wenn du dein
Gedächtnis verlierst,
Si te borran la memoria,
Si te borran la memoria,
Même si tu perds la mémoire,
Anche se i tuoi ricordi sparissero,
Mesmo se a sua memória desaparecer,
Даже если воспоминания исчезнут,