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...
The Eldest and His Happy Science Team
Der Älteste und sein Team der Fröhlichen Wissenschaft
El hijo mayor y su alegre equipo de científicos
El hijo mayor y su alegre equipo de científicos
L’aîné et sa joyeuse bande de scientifiques
O primogênito e seus alegres companheiros de ciência