Mob is very busy preparing for the cultural fair that's coming up in two weeks. Meanwhile, Serizawa is trying to start over, and is thinking about going to night school.
At some point, he just 
started speaking normally.
في فترة ما، بدأ يتكلّم بشكل طبيعيّ فحسب
Mittendrin fing er an,
normal zu sprechen.
Empezó a hablar normal a medias.
Ha empezado a hablar normal a medias.
Il a changé sa façon de parler
en plein milieu.
A un certo punto ha iniziato a parlare normalmente.
Em um momento ele simplesmente 
começou a falar normal.
На середине стал нормально говорить.