Agreed, no reason for Kuniko to banish her gammer. Finding out her true past doesn't change the fact she was vital in their struggle against Atlas.
Anyhow, one of the things this show seems to overlook is international intervention.
My question is - even though Kuniko finds out that Nagiko was the first CEO of Atlas...why banish her? She's in Duomo now right? So doesn't that mean that perhaps Nagiko didn't agree with something in Atlas like policy or did Atlas drop her
someone please tell me that ugly bitch dies a horrible death at the end of this anime so i can keep watching cuz it is really getting irritating how she always gets away with shit...