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...
It's nothing you need to worry about.
إنّه ليس شيئاً يدعوك للقلق
Darüber brauchst du dir
keine Gedanken zu machen.
No tienes nada de qué preocuparte.
No tienes que preocuparte por nada.
Ne te fais pas de souci pour ça.
Non c'è nulla di cui tu debba preoccuparti.
Não é nada digno de sua preocupação.
Тебе на этот счёт
переживать не стоит.