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.
For acting weird, for getting 
depressed for no good reason,
Dafür, dass ich mich seltsam verhalten habe, 
ohne guten Grund niedergeschlagen war ...
Por actuar raro, por deprimirme sin razón,
Me disculpo por haber actuado 
raro, por deprimirme sin razón
Je suis vraiment désolée
 de m’être renfermée de la sorte.
Por agir de um jeito estranho,
por me deprimir sem motivo