Setsuna realizes that Haruki has been staying at Kazusa's house this whole time, and she reveals her true self to him: cowardly, introverted, and pathetic.  But Haruki accepts her as she is.  The boundary between them is broken, and the bonds between the three grow stronger as the school fair draws near.  But Kazusa is skipping sleep and food to work on her "last trick" before the school concert.
Classes are still going on, 
so we'll keep it quiet.
Es ist noch Unterricht, 
also versuchen wir, leise zu sein.
Las clases continúan, así que 
no podemos hacer mucho ruido.
Pero estamos en horario de clases, así 
que no podemos hacer mucho ruido.
Les cours ne sont pas finis,
 donc ne soyons pas trop bruyants.
Ainda tem aulas, então toque baixo.