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...
We've done so for a very long time,
Wir haben das bereits für eine lange Zeit getan,
Lo hemos hecho por mucho tiempo,
Lo llevamos haciendo 
desde hace mucho tiempo,
Malgré toutes ces années,
Fazemos isso há muito tempo,