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.
I've managed to hide it 
for this long, right?
Ich habe es einfach nur geschafft, 
es so lange zu verstecken, nicht?
Pude esconderlo hasta ahora, ¿no?
Lo he podido esconder hasta ahora, ¿no?
Jusqu’à présent,
 j’avais pourtant bien réussi
Consegui esconder esse tempo todo, né?