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.
after making that moving promise with them.
doch nicht sagen, dass ich meine
Erinnerungen noch habe!
no puedo decirles que no perdí la memoria.
c’est chaud d’annoncer
qu’il s’est rien passé !
dopo quella promessa commovente
che ci siamo fatti.
depois de fazer aquela 
promessa toda melosa com eles.
когда так уверял их в обратном!