A student is caught cheating with his cell-phone, and Chiaki is super-mad! He calls all the students to an assembly and angrily threatens to destroy the phone of anybody who's caught with one on school grounds.  The students begin to get angry...
and they basically betrayed him.
وقاموا بخيانته
Und der Typ hat
ihn damit betrogen.
y básicamente lo traicionaron.
Du coup, il a dû se sentir trahi.
e la sua fiducia viene tradita in quel modo...
aí um deles pega e trai a confiança dele.
а они его, по сути, предали.