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.
Well, that's after seeing how hard 
you guys are working.
Nun, ich hab ja gesehen, wie 
viel Mühe ihr euch alle gebt.
Bueno, después de ver cómo trabajaban...
Bueno, después de ver lo 
mucho que os habéis esforzado...
Normal, après vous avoir tous vus
 aussi à fond…
Bem, foi depois de ver como
vocês estão levando a sério.