Aoki tells Yushi that he must be suffering without his parents, even though he isn't.  She has good intentions, but Yushi is frustrated by her inability to see who he really is, and insistance that he has to be what she thinks he is.
So let's keep going until 
the day of the social!
لنستمرّ حتّى يوم الحفلة إذاً
Dann machen wir mal bis
zum Tag der Party so weiter!
Sigamos así hasta el día de la fiesta.
Sigamos así hasta el día de la fiesta.
Plus qu’à bosser jusqu’au jour J,
alors !
E adesso a tutta forza, 
fino all'apertura della giornata di scambio culturale.
Então vamos mandar ver até o dia da festa!
Теперь будем трудиться до дня встречи!