Even after losing the duel, Glenn lacks all motivation. Yet through his interactions with Sistine and Rumia, he eventually starts genuinely teaching classes that will help them. Meanwhile, suspicious men show up at the academy…
If you're not interested, then just sleep.
.من غير مهتمّ، يستطيع أن ينام
Wer keinen Bock darauf hat,
darf schlafen.
Si no les interesa, váyanse a dormir.
Si no os interesa, iros a dormir.
Piquez un somme
si vous vous en foutez.
E se la materia non vi interessa,
fatevi un pisolino.
Quem não estiver 
interessado pode dormir.
Кому не интересно, могут поспать.