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...
You're uncharacteristically sentimental today.
Du bist ungewöhnlich sentimental heute.
Está extrañamente sentimental.
Veo que está extrañamente sentimental.
Vous êtes bien sentimental 
pour une fois.
Hoje você está estranhamente sentimental.