In order to become a mage, you need a research theme which archives one of the seven deadly sins. While thinking about what his theme will be, Arata and 3 others are locked in a barrier, with no exit to be found. But then Lilith and the others find themselves needing to use the restroom... Good luck, girls!
I didn't think you'd be able to break it 
with a thoughtless trick like that.
Ich hätte nicht gedacht,
dass du sie durchbrechen könntest.
No imaginé que la romperías de ese modo.
No imaginé que la romperías de ese modo.
Je ne pensais pas que tu en viendrais
à bout de cette façon.
Non credevo l'avresti risolta con
uno stupido trucco come quello...
Não achei que ia conseguir
 quebrar daquele jeito.