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.
I haven't seen you since 
you investigated my pond.
لم أرك مذ تحرّيت في بركتي
Ich freue mich, dass du nach der Sache
mit dem Teich wieder hier bist.
No nos vemos desde
que viniste a ver el estanque.
No nos vemos desde
que viniste a ver el estanque.
Ça remonte au jour où vous êtes venus
pour la mare.
Non ci vediamo dall'ultima volta 
che è entrato in quel laghetto.
Não te vejo desde que você veio ao meu lago.
Вы приходили помочь мне с прудом.