Chapter 7:
Kurama, the de-facto ruler of Looking Glass City, tells Koto that their mother is the black rabbit.
Chapter 8:
Kurama has been intellectually curious from a young age, and loved it when his father praised his inventions.  He wants to find what he can do outside of the Looking Glass City.
Chapter 9:
The identities of Doctor Shouko and Fushimi are revealed...
I think my teacher knew about it, 
but nobody else did.
Ich glaube, mein Lehrer
 wusste davon, aber sonst niemand.
Creo que mi maestro sabía 
de esto, pero nadie más.
Creo que mi maestro conocía 
este lugar, pero solo él.
Seul mon maître
en connaissait l’existence.
Acho que meu professor sabia a
respeito daqui, mas ninguém mais sabia.