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.
This happened in my last year
 of middle school.
Das passierte im letzten 
Jahr der Mittelschule.
Eso pasó el último año de secundaria.
Eso pasó en el último año 
de mi anterior instituto.
C’est ce qui m’est arrivé
 en quatrième.
Isso aconteceu no meu último
ano antes do ensino médio.