Ciel wins the P4's trust, but he still can't find a chance to get close to the Head Master. And so he brings up the subject of Derrick Arden with the P4 and their drudges. When he does, the expressions on the prefects' faces change...
Clearly, all closed-off 
environments are the same.
من الواضح أنّ كلّ البيئات المُغلَقة متشابهة
In diesen behüteten Welten
sind die Leute immer gleich.
Todos los entornos cerrados
son iguales.
Tous les lieux clos sont les mêmes.
Tutti i circoli chiusi sono uguali.
Claramente, todos os
ambientes fechados são iguais.
Какая знакомая картина…