Shimamura worries about Adachi when she doesn't come to school the next day after she abruptly left her house. The two girls go out together on the weekend and an unlikely guest joins them.
Oh, so that's why.
Das erklärt alles.
Ah, así que es por eso.
Ahora lo entiendo.
Ça explique tout.
Oh, ecco perché!
Então foi por isso.
Так вот в чём дело.