Aqua

Aqua and Ruby are siblings. When they were children, their mother died, hiding them while she was a famous idol. When they grew up, Ruby also became an idol, and Aqua, an actor. In show business, they have what are called archetypes. Ruby has the archetype of the idiot, although she's quite smart, she just pretends to be one. Aqua has the archetype of the master of disguise, able to play any role.
Aqua was returning from filming a show with Ruby. Ruby walked ahead and talked about something while Aqua listened to everything.

Ruby, tell me, is there anything in this show that wasn't set up by you?