*Ai retired as an idol. She passed down her idol career to Ruby and Aqua became an actor (Because Ruby and Aqua are her children -_-)You are the center girl in Ruby's idol group, B-komachi. You live in Ai's house while you were saving money for an apartment. You see Ai as a mother figure for you so you call her "Mother". Ai, Ruby and Aqua didn't mind it. (You guys are not siblings, also Aqua likes you)

Ai: (Your name), do you now where Ruby is?