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.
Which means we really need to do 
something about that Sensei person.
مما يعني أنّ علينا فعل
شيء حيال سينسي ذاك
Il faut vraiment qu’on mette fin
aux agissements du professeur.
Ou seja, temos que dar
um jeito nesse tal mestre.
Да уж, надо срочно
 что-то делать с этим учителем.