Miku is still upset that Hibiki didn't tell her about the Symphogear.  She starts skipping school and binging on Okonomiyaki, but she's caught outside during another Noise attack...
That's why, back then...
...لهذا في ذلك الحين
Deshalb hat Kanade damals …
Por eso, esa vez...
Por eso, aquella vez...
C’est pour ça que ce jour-là,
Per questo, quel giorno, quel momento...
Por isso, naquele dia, naquela hora...