Erika and Sakaki manage to escape from under Sensei with her mother's guidance. Apparently, she's been making preparations, little by little, for Erika to run away one day. Erika learns of thoughts and feelings she didn't know her mother had.
After making contact with Mikado and the others, Erika tells them that she wants Sensei to stop doing the work they do, not just herself. Mikado decides to help, but it seems that Hiyakawa can't understand Erika and Mikado's feelings.
The house you can't leave 
once you've entered...
المنزل الذي لا تستطيع
مغادرته بعد دخوله
Das Haus, aus dem man nicht mehr rauskommt,
wenn man es betreten hat …
¿La casa que no te deja salir
una vez que entras?
¿La casa que no te deja salir
una vez entras?
La maison
dont on ne peut pas ressortir…
È il luogo da cui non si può più uscire, 
una volta che ci si è entrati.
A casa da qual não é possível sair...
«Дом, у которого есть вход,
но нет выхода»...