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!
because I'm going to be the 
demon lord's spouse, supposedly.
weil ich angeblich die Gattin
des Teufels werden soll.
porque se supone que debo ser 
la cónyuge del rey demonio.
porque se supone que debo convertirme 
en la cónyuge del Rey Demonio.
Je suis censée
perché sarò la sposa del signore dei demoni...
porque eu vou ser a esposa do lorde demônio.