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...
No. I'm not as dumb or as strong as you.
Nein. Ich bin nicht so dumm und stark wie du.
No. No soy tan tonto ni tan fuerte como tú.
No. Yo no tengo tu fuerza bruta.
Non merci.
Não. Não sou tolo nem forte como você.